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env-llmeval/lib/python3.10/site-packages/pandas/tests/extension/base/setitem.py

@@ -0,0 +1,451 @@
+import numpy as np
+import pytest
+
+import pandas as pd
+import pandas._testing as tm
+
+
+class BaseSetitemTests:
+    @pytest.fixture(
+        params=[
+            lambda x: x.index,
+            lambda x: list(x.index),
+            lambda x: slice(None),
+            lambda x: slice(0, len(x)),
+            lambda x: range(len(x)),
+            lambda x: list(range(len(x))),
+            lambda x: np.ones(len(x), dtype=bool),
+        ],
+        ids=[
+            "index",
+            "list[index]",
+            "null_slice",
+            "full_slice",
+            "range",
+            "list(range)",
+            "mask",
+        ],
+    )
+    def full_indexer(self, request):
+        """
+        Fixture for an indexer to pass to obj.loc to get/set the full length of the
+        object.
+
+        In some cases, assumes that obj.index is the default RangeIndex.
+        """
+        return request.param
+
+    @pytest.fixture(autouse=True)
+    def skip_if_immutable(self, dtype, request):
+        if dtype._is_immutable:
+            node = request.node
+            if node.name.split("[")[0] == "test_is_immutable":
+                # This fixture is auto-used, but we want to not-skip
+                # test_is_immutable.
+                return
+
+            # When BaseSetitemTests is mixed into ExtensionTests, we only
+            #  want this fixture to operate on the tests defined in this
+            #  class/file.
+            defined_in = node.function.__qualname__.split(".")[0]
+            if defined_in == "BaseSetitemTests":
+                pytest.skip("__setitem__ test not applicable with immutable dtype")
+
+    def test_is_immutable(self, data):
+        if data.dtype._is_immutable:
+            with pytest.raises(TypeError):
+                data[0] = data[0]
+        else:
+            data[0] = data[1]
+            assert data[0] == data[1]
+
+    def test_setitem_scalar_series(self, data, box_in_series):
+        if box_in_series:
+            data = pd.Series(data)
+        data[0] = data[1]
+        assert data[0] == data[1]
+
+    def test_setitem_sequence(self, data, box_in_series):
+        if box_in_series:
+            data = pd.Series(data)
+        original = data.copy()
+
+        data[[0, 1]] = [data[1], data[0]]
+        assert data[0] == original[1]
+        assert data[1] == original[0]
+
+    def test_setitem_sequence_mismatched_length_raises(self, data, as_array):
+        ser = pd.Series(data)
+        original = ser.copy()
+        value = [data[0]]
+        if as_array:
+            value = data._from_sequence(value, dtype=data.dtype)
+
+        xpr = "cannot set using a {} indexer with a different length"
+        with pytest.raises(ValueError, match=xpr.format("list-like")):
+            ser[[0, 1]] = value
+        # Ensure no modifications made before the exception
+        tm.assert_series_equal(ser, original)
+
+        with pytest.raises(ValueError, match=xpr.format("slice")):
+            ser[slice(3)] = value
+        tm.assert_series_equal(ser, original)
+
+    def test_setitem_empty_indexer(self, data, box_in_series):
+        if box_in_series:
+            data = pd.Series(data)
+        original = data.copy()
+        data[np.array([], dtype=int)] = []
+        tm.assert_equal(data, original)
+
+    def test_setitem_sequence_broadcasts(self, data, box_in_series):
+        if box_in_series:
+            data = pd.Series(data)
+        data[[0, 1]] = data[2]
+        assert data[0] == data[2]
+        assert data[1] == data[2]
+
+    @pytest.mark.parametrize("setter", ["loc", "iloc"])
+    def test_setitem_scalar(self, data, setter):
+        arr = pd.Series(data)
+        setter = getattr(arr, setter)
+        setter[0] = data[1]
+        assert arr[0] == data[1]
+
+    def test_setitem_loc_scalar_mixed(self, data):
+        df = pd.DataFrame({"A": np.arange(len(data)), "B": data})
+        df.loc[0, "B"] = data[1]
+        assert df.loc[0, "B"] == data[1]
+
+    def test_setitem_loc_scalar_single(self, data):
+        df = pd.DataFrame({"B": data})
+        df.loc[10, "B"] = data[1]
+        assert df.loc[10, "B"] == data[1]
+
+    def test_setitem_loc_scalar_multiple_homogoneous(self, data):
+        df = pd.DataFrame({"A": data, "B": data})
+        df.loc[10, "B"] = data[1]
+        assert df.loc[10, "B"] == data[1]
+
+    def test_setitem_iloc_scalar_mixed(self, data):
+        df = pd.DataFrame({"A": np.arange(len(data)), "B": data})
+        df.iloc[0, 1] = data[1]
+        assert df.loc[0, "B"] == data[1]
+
+    def test_setitem_iloc_scalar_single(self, data):
+        df = pd.DataFrame({"B": data})
+        df.iloc[10, 0] = data[1]
+        assert df.loc[10, "B"] == data[1]
+
+    def test_setitem_iloc_scalar_multiple_homogoneous(self, data):
+        df = pd.DataFrame({"A": data, "B": data})
+        df.iloc[10, 1] = data[1]
+        assert df.loc[10, "B"] == data[1]
+
+    @pytest.mark.parametrize(
+        "mask",
+        [
+            np.array([True, True, True, False, False]),
+            pd.array([True, True, True, False, False], dtype="boolean"),
+            pd.array([True, True, True, pd.NA, pd.NA], dtype="boolean"),
+        ],
+        ids=["numpy-array", "boolean-array", "boolean-array-na"],
+    )
+    def test_setitem_mask(self, data, mask, box_in_series):
+        arr = data[:5].copy()
+        expected = arr.take([0, 0, 0, 3, 4])
+        if box_in_series:
+            arr = pd.Series(arr)
+            expected = pd.Series(expected)
+        arr[mask] = data[0]
+        tm.assert_equal(expected, arr)
+
+    def test_setitem_mask_raises(self, data, box_in_series):
+        # wrong length
+        mask = np.array([True, False])
+
+        if box_in_series:
+            data = pd.Series(data)
+
+        with pytest.raises(IndexError, match="wrong length"):
+            data[mask] = data[0]
+
+        mask = pd.array(mask, dtype="boolean")
+        with pytest.raises(IndexError, match="wrong length"):
+            data[mask] = data[0]
+
+    def test_setitem_mask_boolean_array_with_na(self, data, box_in_series):
+        mask = pd.array(np.zeros(data.shape, dtype="bool"), dtype="boolean")
+        mask[:3] = True
+        mask[3:5] = pd.NA
+
+        if box_in_series:
+            data = pd.Series(data)
+
+        data[mask] = data[0]
+
+        assert (data[:3] == data[0]).all()
+
+    @pytest.mark.parametrize(
+        "idx",
+        [[0, 1, 2], pd.array([0, 1, 2], dtype="Int64"), np.array([0, 1, 2])],
+        ids=["list", "integer-array", "numpy-array"],
+    )
+    def test_setitem_integer_array(self, data, idx, box_in_series):
+        arr = data[:5].copy()
+        expected = data.take([0, 0, 0, 3, 4])
+
+        if box_in_series:
+            arr = pd.Series(arr)
+            expected = pd.Series(expected)
+
+        arr[idx] = arr[0]
+        tm.assert_equal(arr, expected)
+
+    @pytest.mark.parametrize(
+        "idx, box_in_series",
+        [
+            ([0, 1, 2, pd.NA], False),
+            pytest.param(
+                [0, 1, 2, pd.NA], True, marks=pytest.mark.xfail(reason="GH-31948")
+            ),
+            (pd.array([0, 1, 2, pd.NA], dtype="Int64"), False),
+            (pd.array([0, 1, 2, pd.NA], dtype="Int64"), False),
+        ],
+        ids=["list-False", "list-True", "integer-array-False", "integer-array-True"],
+    )
+    def test_setitem_integer_with_missing_raises(self, data, idx, box_in_series):
+        arr = data.copy()
+
+        # TODO(xfail) this raises KeyError about labels not found (it tries label-based)
+        # for list of labels with Series
+        if box_in_series:
+            arr = pd.Series(data, index=[chr(100 + i) for i in range(len(data))])
+
+        msg = "Cannot index with an integer indexer containing NA values"
+        with pytest.raises(ValueError, match=msg):
+            arr[idx] = arr[0]
+
+    @pytest.mark.parametrize("as_callable", [True, False])
+    @pytest.mark.parametrize("setter", ["loc", None])
+    def test_setitem_mask_aligned(self, data, as_callable, setter):
+        ser = pd.Series(data)
+        mask = np.zeros(len(data), dtype=bool)
+        mask[:2] = True
+
+        if as_callable:
+            mask2 = lambda x: mask
+        else:
+            mask2 = mask
+
+        if setter:
+            # loc
+            target = getattr(ser, setter)
+        else:
+            # Series.__setitem__
+            target = ser
+
+        target[mask2] = data[5:7]
+
+        ser[mask2] = data[5:7]
+        assert ser[0] == data[5]
+        assert ser[1] == data[6]
+
+    @pytest.mark.parametrize("setter", ["loc", None])
+    def test_setitem_mask_broadcast(self, data, setter):
+        ser = pd.Series(data)
+        mask = np.zeros(len(data), dtype=bool)
+        mask[:2] = True
+
+        if setter:  # loc
+            target = getattr(ser, setter)
+        else:  # __setitem__
+            target = ser
+
+        target[mask] = data[10]
+        assert ser[0] == data[10]
+        assert ser[1] == data[10]
+
+    def test_setitem_expand_columns(self, data):
+        df = pd.DataFrame({"A": data})
+        result = df.copy()
+        result["B"] = 1
+        expected = pd.DataFrame({"A": data, "B": [1] * len(data)})
+        tm.assert_frame_equal(result, expected)
+
+        result = df.copy()
+        result.loc[:, "B"] = 1
+        tm.assert_frame_equal(result, expected)
+
+        # overwrite with new type
+        result["B"] = data
+        expected = pd.DataFrame({"A": data, "B": data})
+        tm.assert_frame_equal(result, expected)
+
+    def test_setitem_expand_with_extension(self, data):
+        df = pd.DataFrame({"A": [1] * len(data)})
+        result = df.copy()
+        result["B"] = data
+        expected = pd.DataFrame({"A": [1] * len(data), "B": data})
+        tm.assert_frame_equal(result, expected)
+
+        result = df.copy()
+        result.loc[:, "B"] = data
+        tm.assert_frame_equal(result, expected)
+
+    def test_setitem_frame_invalid_length(self, data):
+        df = pd.DataFrame({"A": [1] * len(data)})
+        xpr = (
+            rf"Length of values \({len(data[:5])}\) "
+            rf"does not match length of index \({len(df)}\)"
+        )
+        with pytest.raises(ValueError, match=xpr):
+            df["B"] = data[:5]
+
+    def test_setitem_tuple_index(self, data):
+        ser = pd.Series(data[:2], index=[(0, 0), (0, 1)])
+        expected = pd.Series(data.take([1, 1]), index=ser.index)
+        ser[(0, 0)] = data[1]
+        tm.assert_series_equal(ser, expected)
+
+    def test_setitem_slice(self, data, box_in_series):
+        arr = data[:5].copy()
+        expected = data.take([0, 0, 0, 3, 4])
+        if box_in_series:
+            arr = pd.Series(arr)
+            expected = pd.Series(expected)
+
+        arr[:3] = data[0]
+        tm.assert_equal(arr, expected)
+
+    def test_setitem_loc_iloc_slice(self, data):
+        arr = data[:5].copy()
+        s = pd.Series(arr, index=["a", "b", "c", "d", "e"])
+        expected = pd.Series(data.take([0, 0, 0, 3, 4]), index=s.index)
+
+        result = s.copy()
+        result.iloc[:3] = data[0]
+        tm.assert_equal(result, expected)
+
+        result = s.copy()
+        result.loc[:"c"] = data[0]
+        tm.assert_equal(result, expected)
+
+    def test_setitem_slice_mismatch_length_raises(self, data):
+        arr = data[:5]
+        with pytest.raises(ValueError):
+            arr[:1] = arr[:2]
+
+    def test_setitem_slice_array(self, data):
+        arr = data[:5].copy()
+        arr[:5] = data[-5:]
+        tm.assert_extension_array_equal(arr, data[-5:])
+
+    def test_setitem_scalar_key_sequence_raise(self, data):
+        arr = data[:5].copy()
+        with pytest.raises(ValueError):
+            arr[0] = arr[[0, 1]]
+
+    def test_setitem_preserves_views(self, data):
+        # GH#28150 setitem shouldn't swap the underlying data
+        view1 = data.view()
+        view2 = data[:]
+
+        data[0] = data[1]
+        assert view1[0] == data[1]
+        assert view2[0] == data[1]
+
+    def test_setitem_with_expansion_dataframe_column(self, data, full_indexer):
+        # https://github.com/pandas-dev/pandas/issues/32395
+        df = expected = pd.DataFrame({0: pd.Series(data)})
+        result = pd.DataFrame(index=df.index)
+
+        key = full_indexer(df)
+        result.loc[key, 0] = df[0]
+
+        tm.assert_frame_equal(result, expected)
+
+    def test_setitem_with_expansion_row(self, data, na_value):
+        df = pd.DataFrame({"data": data[:1]})
+
+        df.loc[1, "data"] = data[1]
+        expected = pd.DataFrame({"data": data[:2]})
+        tm.assert_frame_equal(df, expected)
+
+        # https://github.com/pandas-dev/pandas/issues/47284
+        df.loc[2, "data"] = na_value
+        expected = pd.DataFrame(
+            {"data": pd.Series([data[0], data[1], na_value], dtype=data.dtype)}
+        )
+        tm.assert_frame_equal(df, expected)
+
+    def test_setitem_series(self, data, full_indexer):
+        # https://github.com/pandas-dev/pandas/issues/32395
+        ser = pd.Series(data, name="data")
+        result = pd.Series(index=ser.index, dtype=object, name="data")
+
+        # because result has object dtype, the attempt to do setting inplace
+        #  is successful, and object dtype is retained
+        key = full_indexer(ser)
+        result.loc[key] = ser
+
+        expected = pd.Series(
+            data.astype(object), index=ser.index, name="data", dtype=object
+        )
+        tm.assert_series_equal(result, expected)
+
+    def test_setitem_frame_2d_values(self, data):
+        # GH#44514
+        df = pd.DataFrame({"A": data})
+
+        # Avoiding using_array_manager fixture
+        #  https://github.com/pandas-dev/pandas/pull/44514#discussion_r754002410
+        using_array_manager = isinstance(df._mgr, pd.core.internals.ArrayManager)
+        using_copy_on_write = pd.options.mode.copy_on_write
+
+        blk_data = df._mgr.arrays[0]
+
+        orig = df.copy()
+
+        df.iloc[:] = df.copy()
+        tm.assert_frame_equal(df, orig)
+
+        df.iloc[:-1] = df.iloc[:-1].copy()
+        tm.assert_frame_equal(df, orig)
+
+        df.iloc[:] = df.values
+        tm.assert_frame_equal(df, orig)
+        if not using_array_manager and not using_copy_on_write:
+            # GH#33457 Check that this setting occurred in-place
+            # FIXME(ArrayManager): this should work there too
+            assert df._mgr.arrays[0] is blk_data
+
+        df.iloc[:-1] = df.values[:-1]
+        tm.assert_frame_equal(df, orig)
+
+    def test_delitem_series(self, data):
+        # GH#40763
+        ser = pd.Series(data, name="data")
+
+        taker = np.arange(len(ser))
+        taker = np.delete(taker, 1)
+
+        expected = ser[taker]
+        del ser[1]
+        tm.assert_series_equal(ser, expected)
+
+    def test_setitem_invalid(self, data, invalid_scalar):
+        msg = ""  # messages vary by subclass, so we do not test it
+        with pytest.raises((ValueError, TypeError), match=msg):
+            data[0] = invalid_scalar
+
+        with pytest.raises((ValueError, TypeError), match=msg):
+            data[:] = invalid_scalar
+
+    def test_setitem_2d_values(self, data):
+        # GH50085
+        original = data.copy()
+        df = pd.DataFrame({"a": data, "b": data})
+        df.loc[[0, 1], :] = df.loc[[1, 0], :].values
+        assert (df.loc[0, :] == original[1]).all()
+        assert (df.loc[1, :] == original[0]).all()

env-llmeval/lib/python3.10/site-packages/pandas/tests/extension/conftest.py

@@ -0,0 +1,230 @@
+import operator
+
+import pytest
+
+from pandas._config.config import _get_option
+
+from pandas import (
+    Series,
+    options,
+)
+
+
+@pytest.fixture
+def dtype():
+    """A fixture providing the ExtensionDtype to validate."""
+    raise NotImplementedError
+
+
+@pytest.fixture
+def data():
+    """
+    Length-100 array for this type.
+
+    * data[0] and data[1] should both be non missing
+    * data[0] and data[1] should not be equal
+    """
+    raise NotImplementedError
+
+
+@pytest.fixture
+def data_for_twos(dtype):
+    """
+    Length-100 array in which all the elements are two.
+
+    Call pytest.skip in your fixture if the dtype does not support divmod.
+    """
+    if not (dtype._is_numeric or dtype.kind == "m"):
+        # Object-dtypes may want to allow this, but for the most part
+        #  only numeric and timedelta-like dtypes will need to implement this.
+        pytest.skip(f"{dtype} is not a numeric dtype")
+
+    raise NotImplementedError
+
+
+@pytest.fixture
+def data_missing():
+    """Length-2 array with [NA, Valid]"""
+    raise NotImplementedError
+
+
+@pytest.fixture(params=["data", "data_missing"])
+def all_data(request, data, data_missing):
+    """Parametrized fixture giving 'data' and 'data_missing'"""
+    if request.param == "data":
+        return data
+    elif request.param == "data_missing":
+        return data_missing
+
+
+@pytest.fixture
+def data_repeated(data):
+    """
+    Generate many datasets.
+
+    Parameters
+    ----------
+    data : fixture implementing `data`
+
+    Returns
+    -------
+    Callable[[int], Generator]:
+        A callable that takes a `count` argument and
+        returns a generator yielding `count` datasets.
+    """
+
+    def gen(count):
+        for _ in range(count):
+            yield data
+
+    return gen
+
+
+@pytest.fixture
+def data_for_sorting():
+    """
+    Length-3 array with a known sort order.
+
+    This should be three items [B, C, A] with
+    A < B < C
+
+    For boolean dtypes (for which there are only 2 values available),
+    set B=C=True
+    """
+    raise NotImplementedError
+
+
+@pytest.fixture
+def data_missing_for_sorting():
+    """
+    Length-3 array with a known sort order.
+
+    This should be three items [B, NA, A] with
+    A < B and NA missing.
+    """
+    raise NotImplementedError
+
+
+@pytest.fixture
+def na_cmp():
+    """
+    Binary operator for comparing NA values.
+
+    Should return a function of two arguments that returns
+    True if both arguments are (scalar) NA for your type.
+
+    By default, uses ``operator.is_``
+    """
+    return operator.is_
+
+
+@pytest.fixture
+def na_value(dtype):
+    """
+    The scalar missing value for this type. Default dtype.na_value.
+
+    TODO: can be removed in 3.x (see https://github.com/pandas-dev/pandas/pull/54930)
+    """
+    return dtype.na_value
+
+
+@pytest.fixture
+def data_for_grouping():
+    """
+    Data for factorization, grouping, and unique tests.
+
+    Expected to be like [B, B, NA, NA, A, A, B, C]
+
+    Where A < B < C and NA is missing.
+
+    If a dtype has _is_boolean = True, i.e. only 2 unique non-NA entries,
+    then set C=B.
+    """
+    raise NotImplementedError
+
+
+@pytest.fixture(params=[True, False])
+def box_in_series(request):
+    """Whether to box the data in a Series"""
+    return request.param
+
+
+@pytest.fixture(
+    params=[
+        lambda x: 1,
+        lambda x: [1] * len(x),
+        lambda x: Series([1] * len(x)),
+        lambda x: x,
+    ],
+    ids=["scalar", "list", "series", "object"],
+)
+def groupby_apply_op(request):
+    """
+    Functions to test groupby.apply().
+    """
+    return request.param
+
+
+@pytest.fixture(params=[True, False])
+def as_frame(request):
+    """
+    Boolean fixture to support Series and Series.to_frame() comparison testing.
+    """
+    return request.param
+
+
+@pytest.fixture(params=[True, False])
+def as_series(request):
+    """
+    Boolean fixture to support arr and Series(arr) comparison testing.
+    """
+    return request.param
+
+
+@pytest.fixture(params=[True, False])
+def use_numpy(request):
+    """
+    Boolean fixture to support comparison testing of ExtensionDtype array
+    and numpy array.
+    """
+    return request.param
+
+
+@pytest.fixture(params=["ffill", "bfill"])
+def fillna_method(request):
+    """
+    Parametrized fixture giving method parameters 'ffill' and 'bfill' for
+    Series.fillna(method=<method>) testing.
+    """
+    return request.param
+
+
+@pytest.fixture(params=[True, False])
+def as_array(request):
+    """
+    Boolean fixture to support ExtensionDtype _from_sequence method testing.
+    """
+    return request.param
+
+
+@pytest.fixture
+def invalid_scalar(data):
+    """
+    A scalar that *cannot* be held by this ExtensionArray.
+
+    The default should work for most subclasses, but is not guaranteed.
+
+    If the array can hold any item (i.e. object dtype), then use pytest.skip.
+    """
+    return object.__new__(object)
+
+
+@pytest.fixture
+def using_copy_on_write() -> bool:
+    """
+    Fixture to check if Copy-on-Write is enabled.
+    """
+    return (
+        options.mode.copy_on_write is True
+        and _get_option("mode.data_manager", silent=True) == "block"
+    )

env-llmeval/lib/python3.10/site-packages/pandas/tests/extension/date/__init__.py

@@ -0,0 +1,6 @@
+from pandas.tests.extension.date.array import (
+    DateArray,
+    DateDtype,
+)
+
+__all__ = ["DateArray", "DateDtype"]

env-llmeval/lib/python3.10/site-packages/pandas/tests/extension/date/array.py

@@ -0,0 +1,188 @@
+from __future__ import annotations
+
+import datetime as dt
+from typing import (
+    TYPE_CHECKING,
+    Any,
+    cast,
+)
+
+import numpy as np
+
+from pandas.core.dtypes.dtypes import register_extension_dtype
+
+from pandas.api.extensions import (
+    ExtensionArray,
+    ExtensionDtype,
+)
+from pandas.api.types import pandas_dtype
+
+if TYPE_CHECKING:
+    from collections.abc import Sequence
+
+    from pandas._typing import (
+        Dtype,
+        PositionalIndexer,
+    )
+
+
+@register_extension_dtype
+class DateDtype(ExtensionDtype):
+    @property
+    def type(self):
+        return dt.date
+
+    @property
+    def name(self):
+        return "DateDtype"
+
+    @classmethod
+    def construct_from_string(cls, string: str):
+        if not isinstance(string, str):
+            raise TypeError(
+                f"'construct_from_string' expects a string, got {type(string)}"
+            )
+
+        if string == cls.__name__:
+            return cls()
+        else:
+            raise TypeError(f"Cannot construct a '{cls.__name__}' from '{string}'")
+
+    @classmethod
+    def construct_array_type(cls):
+        return DateArray
+
+    @property
+    def na_value(self):
+        return dt.date.min
+
+    def __repr__(self) -> str:
+        return self.name
+
+
+class DateArray(ExtensionArray):
+    def __init__(
+        self,
+        dates: (
+            dt.date
+            | Sequence[dt.date]
+            | tuple[np.ndarray, np.ndarray, np.ndarray]
+            | np.ndarray
+        ),
+    ) -> None:
+        if isinstance(dates, dt.date):
+            self._year = np.array([dates.year])
+            self._month = np.array([dates.month])
+            self._day = np.array([dates.year])
+            return
+
+        ldates = len(dates)
+        if isinstance(dates, list):
+            # pre-allocate the arrays since we know the size before hand
+            self._year = np.zeros(ldates, dtype=np.uint16)  # 65535 (0, 9999)
+            self._month = np.zeros(ldates, dtype=np.uint8)  # 255 (1, 31)
+            self._day = np.zeros(ldates, dtype=np.uint8)  # 255 (1, 12)
+            # populate them
+            for i, (y, m, d) in enumerate(
+                (date.year, date.month, date.day) for date in dates
+            ):
+                self._year[i] = y
+                self._month[i] = m
+                self._day[i] = d
+
+        elif isinstance(dates, tuple):
+            # only support triples
+            if ldates != 3:
+                raise ValueError("only triples are valid")
+            # check if all elements have the same type
+            if any(not isinstance(x, np.ndarray) for x in dates):
+                raise TypeError("invalid type")
+            ly, lm, ld = (len(cast(np.ndarray, d)) for d in dates)
+            if not ly == lm == ld:
+                raise ValueError(
+                    f"tuple members must have the same length: {(ly, lm, ld)}"
+                )
+            self._year = dates[0].astype(np.uint16)
+            self._month = dates[1].astype(np.uint8)
+            self._day = dates[2].astype(np.uint8)
+
+        elif isinstance(dates, np.ndarray) and dates.dtype == "U10":
+            self._year = np.zeros(ldates, dtype=np.uint16)  # 65535 (0, 9999)
+            self._month = np.zeros(ldates, dtype=np.uint8)  # 255 (1, 31)
+            self._day = np.zeros(ldates, dtype=np.uint8)  # 255 (1, 12)
+
+            # error: "object_" object is not iterable
+            obj = np.char.split(dates, sep="-")
+            for (i,), (y, m, d) in np.ndenumerate(obj):  # type: ignore[misc]
+                self._year[i] = int(y)
+                self._month[i] = int(m)
+                self._day[i] = int(d)
+
+        else:
+            raise TypeError(f"{type(dates)} is not supported")
+
+    @property
+    def dtype(self) -> ExtensionDtype:
+        return DateDtype()
+
+    def astype(self, dtype, copy=True):
+        dtype = pandas_dtype(dtype)
+
+        if isinstance(dtype, DateDtype):
+            data = self.copy() if copy else self
+        else:
+            data = self.to_numpy(dtype=dtype, copy=copy, na_value=dt.date.min)
+
+        return data
+
+    @property
+    def nbytes(self) -> int:
+        return self._year.nbytes + self._month.nbytes + self._day.nbytes
+
+    def __len__(self) -> int:
+        return len(self._year)  # all 3 arrays are enforced to have the same length
+
+    def __getitem__(self, item: PositionalIndexer):
+        if isinstance(item, int):
+            return dt.date(self._year[item], self._month[item], self._day[item])
+        else:
+            raise NotImplementedError("only ints are supported as indexes")
+
+    def __setitem__(self, key: int | slice | np.ndarray, value: Any) -> None:
+        if not isinstance(key, int):
+            raise NotImplementedError("only ints are supported as indexes")
+
+        if not isinstance(value, dt.date):
+            raise TypeError("you can only set datetime.date types")
+
+        self._year[key] = value.year
+        self._month[key] = value.month
+        self._day[key] = value.day
+
+    def __repr__(self) -> str:
+        return f"DateArray{list(zip(self._year, self._month, self._day))}"
+
+    def copy(self) -> DateArray:
+        return DateArray((self._year.copy(), self._month.copy(), self._day.copy()))
+
+    def isna(self) -> np.ndarray:
+        return np.logical_and(
+            np.logical_and(
+                self._year == dt.date.min.year, self._month == dt.date.min.month
+            ),
+            self._day == dt.date.min.day,
+        )
+
+    @classmethod
+    def _from_sequence(cls, scalars, *, dtype: Dtype | None = None, copy=False):
+        if isinstance(scalars, dt.date):
+            raise TypeError
+        elif isinstance(scalars, DateArray):
+            if dtype is not None:
+                return scalars.astype(dtype, copy=copy)
+            if copy:
+                return scalars.copy()
+            return scalars[:]
+        elif isinstance(scalars, np.ndarray):
+            scalars = scalars.astype("U10")  # 10 chars for yyyy-mm-dd
+            return DateArray(scalars)

env-llmeval/lib/python3.10/site-packages/pandas/tests/extension/decimal/__init__.py

@@ -0,0 +1,8 @@
+from pandas.tests.extension.decimal.array import (
+    DecimalArray,
+    DecimalDtype,
+    make_data,
+    to_decimal,
+)
+
+__all__ = ["DecimalArray", "DecimalDtype", "to_decimal", "make_data"]

env-llmeval/lib/python3.10/site-packages/pandas/tests/extension/decimal/array.py

@@ -0,0 +1,311 @@
+from __future__ import annotations
+
+import decimal
+import numbers
+import sys
+from typing import TYPE_CHECKING
+
+import numpy as np
+
+from pandas.core.dtypes.base import ExtensionDtype
+from pandas.core.dtypes.common import (
+    is_dtype_equal,
+    is_float,
+    is_integer,
+    pandas_dtype,
+)
+
+import pandas as pd
+from pandas.api.extensions import (
+    no_default,
+    register_extension_dtype,
+)
+from pandas.api.types import (
+    is_list_like,
+    is_scalar,
+)
+from pandas.core import arraylike
+from pandas.core.algorithms import value_counts_internal as value_counts
+from pandas.core.arraylike import OpsMixin
+from pandas.core.arrays import (
+    ExtensionArray,
+    ExtensionScalarOpsMixin,
+)
+from pandas.core.indexers import check_array_indexer
+
+if TYPE_CHECKING:
+    from pandas._typing import type_t
+
+
+@register_extension_dtype
+class DecimalDtype(ExtensionDtype):
+    type = decimal.Decimal
+    name = "decimal"
+    na_value = decimal.Decimal("NaN")
+    _metadata = ("context",)
+
+    def __init__(self, context=None) -> None:
+        self.context = context or decimal.getcontext()
+
+    def __repr__(self) -> str:
+        return f"DecimalDtype(context={self.context})"
+
+    @classmethod
+    def construct_array_type(cls) -> type_t[DecimalArray]:
+        """
+        Return the array type associated with this dtype.
+
+        Returns
+        -------
+        type
+        """
+        return DecimalArray
+
+    @property
+    def _is_numeric(self) -> bool:
+        return True
+
+
+class DecimalArray(OpsMixin, ExtensionScalarOpsMixin, ExtensionArray):
+    __array_priority__ = 1000
+
+    def __init__(self, values, dtype=None, copy=False, context=None) -> None:
+        for i, val in enumerate(values):
+            if is_float(val) or is_integer(val):
+                if np.isnan(val):
+                    values[i] = DecimalDtype.na_value
+                else:
+                    # error: Argument 1 has incompatible type "float | int |
+                    # integer[Any]"; expected "Decimal | float | str | tuple[int,
+                    # Sequence[int], int]"
+                    values[i] = DecimalDtype.type(val)  # type: ignore[arg-type]
+            elif not isinstance(val, decimal.Decimal):
+                raise TypeError("All values must be of type " + str(decimal.Decimal))
+        values = np.asarray(values, dtype=object)
+
+        self._data = values
+        # Some aliases for common attribute names to ensure pandas supports
+        # these
+        self._items = self.data = self._data
+        # those aliases are currently not working due to assumptions
+        # in internal code (GH-20735)
+        # self._values = self.values = self.data
+        self._dtype = DecimalDtype(context)
+
+    @property
+    def dtype(self):
+        return self._dtype
+
+    @classmethod
+    def _from_sequence(cls, scalars, *, dtype=None, copy=False):
+        return cls(scalars)
+
+    @classmethod
+    def _from_sequence_of_strings(cls, strings, dtype=None, copy=False):
+        return cls._from_sequence(
+            [decimal.Decimal(x) for x in strings], dtype=dtype, copy=copy
+        )
+
+    @classmethod
+    def _from_factorized(cls, values, original):
+        return cls(values)
+
+    _HANDLED_TYPES = (decimal.Decimal, numbers.Number, np.ndarray)
+
+    def to_numpy(
+        self,
+        dtype=None,
+        copy: bool = False,
+        na_value: object = no_default,
+        decimals=None,
+    ) -> np.ndarray:
+        result = np.asarray(self, dtype=dtype)
+        if decimals is not None:
+            result = np.asarray([round(x, decimals) for x in result])
+        return result
+
+    def __array_ufunc__(self, ufunc: np.ufunc, method: str, *inputs, **kwargs):
+        #
+        if not all(
+            isinstance(t, self._HANDLED_TYPES + (DecimalArray,)) for t in inputs
+        ):
+            return NotImplemented
+
+        result = arraylike.maybe_dispatch_ufunc_to_dunder_op(
+            self, ufunc, method, *inputs, **kwargs
+        )
+        if result is not NotImplemented:
+            # e.g. test_array_ufunc_series_scalar_other
+            return result
+
+        if "out" in kwargs:
+            return arraylike.dispatch_ufunc_with_out(
+                self, ufunc, method, *inputs, **kwargs
+            )
+
+        inputs = tuple(x._data if isinstance(x, DecimalArray) else x for x in inputs)
+        result = getattr(ufunc, method)(*inputs, **kwargs)
+
+        if method == "reduce":
+            result = arraylike.dispatch_reduction_ufunc(
+                self, ufunc, method, *inputs, **kwargs
+            )
+            if result is not NotImplemented:
+                return result
+
+        def reconstruct(x):
+            if isinstance(x, (decimal.Decimal, numbers.Number)):
+                return x
+            else:
+                return type(self)._from_sequence(x, dtype=self.dtype)
+
+        if ufunc.nout > 1:
+            return tuple(reconstruct(x) for x in result)
+        else:
+            return reconstruct(result)
+
+    def __getitem__(self, item):
+        if isinstance(item, numbers.Integral):
+            return self._data[item]
+        else:
+            # array, slice.
+            item = pd.api.indexers.check_array_indexer(self, item)
+            return type(self)(self._data[item])
+
+    def take(self, indexer, allow_fill=False, fill_value=None):
+        from pandas.api.extensions import take
+
+        data = self._data
+        if allow_fill and fill_value is None:
+            fill_value = self.dtype.na_value
+
+        result = take(data, indexer, fill_value=fill_value, allow_fill=allow_fill)
+        return self._from_sequence(result, dtype=self.dtype)
+
+    def copy(self):
+        return type(self)(self._data.copy(), dtype=self.dtype)
+
+    def astype(self, dtype, copy=True):
+        if is_dtype_equal(dtype, self._dtype):
+            if not copy:
+                return self
+        dtype = pandas_dtype(dtype)
+        if isinstance(dtype, type(self.dtype)):
+            return type(self)(self._data, copy=copy, context=dtype.context)
+
+        return super().astype(dtype, copy=copy)
+
+    def __setitem__(self, key, value) -> None:
+        if is_list_like(value):
+            if is_scalar(key):
+                raise ValueError("setting an array element with a sequence.")
+            value = [decimal.Decimal(v) for v in value]
+        else:
+            value = decimal.Decimal(value)
+
+        key = check_array_indexer(self, key)
+        self._data[key] = value
+
+    def __len__(self) -> int:
+        return len(self._data)
+
+    def __contains__(self, item) -> bool | np.bool_:
+        if not isinstance(item, decimal.Decimal):
+            return False
+        elif item.is_nan():
+            return self.isna().any()
+        else:
+            return super().__contains__(item)
+
+    @property
+    def nbytes(self) -> int:
+        n = len(self)
+        if n:
+            return n * sys.getsizeof(self[0])
+        return 0
+
+    def isna(self):
+        return np.array([x.is_nan() for x in self._data], dtype=bool)
+
+    @property
+    def _na_value(self):
+        return decimal.Decimal("NaN")
+
+    def _formatter(self, boxed=False):
+        if boxed:
+            return "Decimal: {}".format
+        return repr
+
+    @classmethod
+    def _concat_same_type(cls, to_concat):
+        return cls(np.concatenate([x._data for x in to_concat]))
+
+    def _reduce(
+        self, name: str, *, skipna: bool = True, keepdims: bool = False, **kwargs
+    ):
+        if skipna and self.isna().any():
+            # If we don't have any NAs, we can ignore skipna
+            other = self[~self.isna()]
+            result = other._reduce(name, **kwargs)
+        elif name == "sum" and len(self) == 0:
+            # GH#29630 avoid returning int 0 or np.bool_(False) on old numpy
+            result = decimal.Decimal(0)
+        else:
+            try:
+                op = getattr(self.data, name)
+            except AttributeError as err:
+                raise NotImplementedError(
+                    f"decimal does not support the {name} operation"
+                ) from err
+            result = op(axis=0)
+
+        if keepdims:
+            return type(self)([result])
+        else:
+            return result
+
+    def _cmp_method(self, other, op):
+        # For use with OpsMixin
+        def convert_values(param):
+            if isinstance(param, ExtensionArray) or is_list_like(param):
+                ovalues = param
+            else:
+                # Assume it's an object
+                ovalues = [param] * len(self)
+            return ovalues
+
+        lvalues = self
+        rvalues = convert_values(other)
+
+        # If the operator is not defined for the underlying objects,
+        # a TypeError should be raised
+        res = [op(a, b) for (a, b) in zip(lvalues, rvalues)]
+
+        return np.asarray(res, dtype=bool)
+
+    def value_counts(self, dropna: bool = True):
+        return value_counts(self.to_numpy(), dropna=dropna)
+
+    # We override fillna here to simulate a 3rd party EA that has done so. This
+    #  lets us test the deprecation telling authors to implement _pad_or_backfill
+    # Simulate a 3rd-party EA that has not yet updated to include a "copy"
+    #  keyword in its fillna method.
+    # error: Signature of "fillna" incompatible with supertype "ExtensionArray"
+    def fillna(  # type: ignore[override]
+        self,
+        value=None,
+        method=None,
+        limit: int | None = None,
+    ):
+        return super().fillna(value=value, method=method, limit=limit, copy=True)
+
+
+def to_decimal(values, context=None):
+    return DecimalArray([decimal.Decimal(x) for x in values], context=context)
+
+
+def make_data():
+    return [decimal.Decimal(val) for val in np.random.default_rng(2).random(100)]
+
+
+DecimalArray._add_arithmetic_ops()

env-llmeval/lib/python3.10/site-packages/pandas/tests/extension/decimal/test_decimal.py

@@ -0,0 +1,567 @@
+from __future__ import annotations
+
+import decimal
+import operator
+
+import numpy as np
+import pytest
+
+import pandas as pd
+import pandas._testing as tm
+from pandas.tests.extension import base
+from pandas.tests.extension.decimal.array import (
+    DecimalArray,
+    DecimalDtype,
+    make_data,
+    to_decimal,
+)
+
+
+@pytest.fixture
+def dtype():
+    return DecimalDtype()
+
+
+@pytest.fixture
+def data():
+    return DecimalArray(make_data())
+
+
+@pytest.fixture
+def data_for_twos():
+    return DecimalArray([decimal.Decimal(2) for _ in range(100)])
+
+
+@pytest.fixture
+def data_missing():
+    return DecimalArray([decimal.Decimal("NaN"), decimal.Decimal(1)])
+
+
+@pytest.fixture
+def data_for_sorting():
+    return DecimalArray(
+        [decimal.Decimal("1"), decimal.Decimal("2"), decimal.Decimal("0")]
+    )
+
+
+@pytest.fixture
+def data_missing_for_sorting():
+    return DecimalArray(
+        [decimal.Decimal("1"), decimal.Decimal("NaN"), decimal.Decimal("0")]
+    )
+
+
+@pytest.fixture
+def na_cmp():
+    return lambda x, y: x.is_nan() and y.is_nan()
+
+
+@pytest.fixture
+def data_for_grouping():
+    b = decimal.Decimal("1.0")
+    a = decimal.Decimal("0.0")
+    c = decimal.Decimal("2.0")
+    na = decimal.Decimal("NaN")
+    return DecimalArray([b, b, na, na, a, a, b, c])
+
+
+class TestDecimalArray(base.ExtensionTests):
+    def _get_expected_exception(
+        self, op_name: str, obj, other
+    ) -> type[Exception] | None:
+        return None
+
+    def _supports_reduction(self, ser: pd.Series, op_name: str) -> bool:
+        return True
+
+    def check_reduce(self, ser: pd.Series, op_name: str, skipna: bool):
+        if op_name == "count":
+            return super().check_reduce(ser, op_name, skipna)
+        else:
+            result = getattr(ser, op_name)(skipna=skipna)
+            expected = getattr(np.asarray(ser), op_name)()
+            tm.assert_almost_equal(result, expected)
+
+    def test_reduce_series_numeric(self, data, all_numeric_reductions, skipna, request):
+        if all_numeric_reductions in ["kurt", "skew", "sem", "median"]:
+            mark = pytest.mark.xfail(raises=NotImplementedError)
+            request.applymarker(mark)
+        super().test_reduce_series_numeric(data, all_numeric_reductions, skipna)
+
+    def test_reduce_frame(self, data, all_numeric_reductions, skipna, request):
+        op_name = all_numeric_reductions
+        if op_name in ["skew", "median"]:
+            mark = pytest.mark.xfail(raises=NotImplementedError)
+            request.applymarker(mark)
+
+        return super().test_reduce_frame(data, all_numeric_reductions, skipna)
+
+    def test_compare_scalar(self, data, comparison_op):
+        ser = pd.Series(data)
+        self._compare_other(ser, data, comparison_op, 0.5)
+
+    def test_compare_array(self, data, comparison_op):
+        ser = pd.Series(data)
+
+        alter = np.random.default_rng(2).choice([-1, 0, 1], len(data))
+        # Randomly double, halve or keep same value
+        other = pd.Series(data) * [decimal.Decimal(pow(2.0, i)) for i in alter]
+        self._compare_other(ser, data, comparison_op, other)
+
+    def test_arith_series_with_array(self, data, all_arithmetic_operators):
+        op_name = all_arithmetic_operators
+        ser = pd.Series(data)
+
+        context = decimal.getcontext()
+        divbyzerotrap = context.traps[decimal.DivisionByZero]
+        invalidoptrap = context.traps[decimal.InvalidOperation]
+        context.traps[decimal.DivisionByZero] = 0
+        context.traps[decimal.InvalidOperation] = 0
+
+        # Decimal supports ops with int, but not float
+        other = pd.Series([int(d * 100) for d in data])
+        self.check_opname(ser, op_name, other)
+
+        if "mod" not in op_name:
+            self.check_opname(ser, op_name, ser * 2)
+
+        self.check_opname(ser, op_name, 0)
+        self.check_opname(ser, op_name, 5)
+        context.traps[decimal.DivisionByZero] = divbyzerotrap
+        context.traps[decimal.InvalidOperation] = invalidoptrap
+
+    def test_fillna_frame(self, data_missing):
+        msg = "ExtensionArray.fillna added a 'copy' keyword"
+        with tm.assert_produces_warning(
+            DeprecationWarning, match=msg, check_stacklevel=False
+        ):
+            super().test_fillna_frame(data_missing)
+
+    def test_fillna_limit_pad(self, data_missing):
+        msg = "ExtensionArray.fillna 'method' keyword is deprecated"
+        with tm.assert_produces_warning(
+            DeprecationWarning,
+            match=msg,
+            check_stacklevel=False,
+            raise_on_extra_warnings=False,
+        ):
+            super().test_fillna_limit_pad(data_missing)
+
+        msg = "The 'method' keyword in DecimalArray.fillna is deprecated"
+        with tm.assert_produces_warning(
+            FutureWarning,
+            match=msg,
+            check_stacklevel=False,
+            raise_on_extra_warnings=False,
+        ):
+            super().test_fillna_limit_pad(data_missing)
+
+    @pytest.mark.parametrize(
+        "limit_area, input_ilocs, expected_ilocs",
+        [
+            ("outside", [1, 0, 0, 0, 1], [1, 0, 0, 0, 1]),
+            ("outside", [1, 0, 1, 0, 1], [1, 0, 1, 0, 1]),
+            ("outside", [0, 1, 1, 1, 0], [0, 1, 1, 1, 1]),
+            ("outside", [0, 1, 0, 1, 0], [0, 1, 0, 1, 1]),
+            ("inside", [1, 0, 0, 0, 1], [1, 1, 1, 1, 1]),
+            ("inside", [1, 0, 1, 0, 1], [1, 1, 1, 1, 1]),
+            ("inside", [0, 1, 1, 1, 0], [0, 1, 1, 1, 0]),
+            ("inside", [0, 1, 0, 1, 0], [0, 1, 1, 1, 0]),
+        ],
+    )
+    def test_ffill_limit_area(
+        self, data_missing, limit_area, input_ilocs, expected_ilocs
+    ):
+        # GH#56616
+        msg = "ExtensionArray.fillna 'method' keyword is deprecated"
+        with tm.assert_produces_warning(
+            DeprecationWarning,
+            match=msg,
+            check_stacklevel=False,
+            raise_on_extra_warnings=False,
+        ):
+            msg = "DecimalArray does not implement limit_area"
+            with pytest.raises(NotImplementedError, match=msg):
+                super().test_ffill_limit_area(
+                    data_missing, limit_area, input_ilocs, expected_ilocs
+                )
+
+    def test_fillna_limit_backfill(self, data_missing):
+        msg = "Series.fillna with 'method' is deprecated"
+        with tm.assert_produces_warning(
+            FutureWarning,
+            match=msg,
+            check_stacklevel=False,
+            raise_on_extra_warnings=False,
+        ):
+            super().test_fillna_limit_backfill(data_missing)
+
+        msg = "ExtensionArray.fillna 'method' keyword is deprecated"
+        with tm.assert_produces_warning(
+            DeprecationWarning,
+            match=msg,
+            check_stacklevel=False,
+            raise_on_extra_warnings=False,
+        ):
+            super().test_fillna_limit_backfill(data_missing)
+
+        msg = "The 'method' keyword in DecimalArray.fillna is deprecated"
+        with tm.assert_produces_warning(
+            FutureWarning,
+            match=msg,
+            check_stacklevel=False,
+            raise_on_extra_warnings=False,
+        ):
+            super().test_fillna_limit_backfill(data_missing)
+
+    def test_fillna_no_op_returns_copy(self, data):
+        msg = "|".join(
+            [
+                "ExtensionArray.fillna 'method' keyword is deprecated",
+                "The 'method' keyword in DecimalArray.fillna is deprecated",
+            ]
+        )
+        with tm.assert_produces_warning(
+            (FutureWarning, DeprecationWarning), match=msg, check_stacklevel=False
+        ):
+            super().test_fillna_no_op_returns_copy(data)
+
+    def test_fillna_series(self, data_missing):
+        msg = "ExtensionArray.fillna added a 'copy' keyword"
+        with tm.assert_produces_warning(
+            DeprecationWarning, match=msg, check_stacklevel=False
+        ):
+            super().test_fillna_series(data_missing)
+
+    def test_fillna_series_method(self, data_missing, fillna_method):
+        msg = "|".join(
+            [
+                "ExtensionArray.fillna 'method' keyword is deprecated",
+                "The 'method' keyword in DecimalArray.fillna is deprecated",
+            ]
+        )
+        with tm.assert_produces_warning(
+            (FutureWarning, DeprecationWarning), match=msg, check_stacklevel=False
+        ):
+            super().test_fillna_series_method(data_missing, fillna_method)
+
+    def test_fillna_copy_frame(self, data_missing, using_copy_on_write):
+        warn = DeprecationWarning if not using_copy_on_write else None
+        msg = "ExtensionArray.fillna added a 'copy' keyword"
+        with tm.assert_produces_warning(warn, match=msg, check_stacklevel=False):
+            super().test_fillna_copy_frame(data_missing)
+
+    def test_fillna_copy_series(self, data_missing, using_copy_on_write):
+        warn = DeprecationWarning if not using_copy_on_write else None
+        msg = "ExtensionArray.fillna added a 'copy' keyword"
+        with tm.assert_produces_warning(warn, match=msg, check_stacklevel=False):
+            super().test_fillna_copy_series(data_missing)
+
+    @pytest.mark.parametrize("dropna", [True, False])
+    def test_value_counts(self, all_data, dropna, request):
+        all_data = all_data[:10]
+        if dropna:
+            other = np.array(all_data[~all_data.isna()])
+        else:
+            other = all_data
+
+        vcs = pd.Series(all_data).value_counts(dropna=dropna)
+        vcs_ex = pd.Series(other).value_counts(dropna=dropna)
+
+        with decimal.localcontext() as ctx:
+            # avoid raising when comparing Decimal("NAN") < Decimal(2)
+            ctx.traps[decimal.InvalidOperation] = False
+
+            result = vcs.sort_index()
+            expected = vcs_ex.sort_index()
+
+        tm.assert_series_equal(result, expected)
+
+    def test_series_repr(self, data):
+        # Overriding this base test to explicitly test that
+        # the custom _formatter is used
+        ser = pd.Series(data)
+        assert data.dtype.name in repr(ser)
+        assert "Decimal: " in repr(ser)
+
+    @pytest.mark.xfail(reason="Inconsistent array-vs-scalar behavior")
+    @pytest.mark.parametrize("ufunc", [np.positive, np.negative, np.abs])
+    def test_unary_ufunc_dunder_equivalence(self, data, ufunc):
+        super().test_unary_ufunc_dunder_equivalence(data, ufunc)
+
+
+def test_take_na_value_other_decimal():
+    arr = DecimalArray([decimal.Decimal("1.0"), decimal.Decimal("2.0")])
+    result = arr.take([0, -1], allow_fill=True, fill_value=decimal.Decimal("-1.0"))
+    expected = DecimalArray([decimal.Decimal("1.0"), decimal.Decimal("-1.0")])
+    tm.assert_extension_array_equal(result, expected)
+
+
+def test_series_constructor_coerce_data_to_extension_dtype():
+    dtype = DecimalDtype()
+    ser = pd.Series([0, 1, 2], dtype=dtype)
+
+    arr = DecimalArray(
+        [decimal.Decimal(0), decimal.Decimal(1), decimal.Decimal(2)],
+        dtype=dtype,
+    )
+    exp = pd.Series(arr)
+    tm.assert_series_equal(ser, exp)
+
+
+def test_series_constructor_with_dtype():
+    arr = DecimalArray([decimal.Decimal("10.0")])
+    result = pd.Series(arr, dtype=DecimalDtype())
+    expected = pd.Series(arr)
+    tm.assert_series_equal(result, expected)
+
+    result = pd.Series(arr, dtype="int64")
+    expected = pd.Series([10])
+    tm.assert_series_equal(result, expected)
+
+
+def test_dataframe_constructor_with_dtype():
+    arr = DecimalArray([decimal.Decimal("10.0")])
+
+    result = pd.DataFrame({"A": arr}, dtype=DecimalDtype())
+    expected = pd.DataFrame({"A": arr})
+    tm.assert_frame_equal(result, expected)
+
+    arr = DecimalArray([decimal.Decimal("10.0")])
+    result = pd.DataFrame({"A": arr}, dtype="int64")
+    expected = pd.DataFrame({"A": [10]})
+    tm.assert_frame_equal(result, expected)
+
+
+@pytest.mark.parametrize("frame", [True, False])
+def test_astype_dispatches(frame):
+    # This is a dtype-specific test that ensures Series[decimal].astype
+    # gets all the way through to ExtensionArray.astype
+    # Designing a reliable smoke test that works for arbitrary data types
+    # is difficult.
+    data = pd.Series(DecimalArray([decimal.Decimal(2)]), name="a")
+    ctx = decimal.Context()
+    ctx.prec = 5
+
+    if frame:
+        data = data.to_frame()
+
+    result = data.astype(DecimalDtype(ctx))
+
+    if frame:
+        result = result["a"]
+
+    assert result.dtype.context.prec == ctx.prec
+
+
+class DecimalArrayWithoutFromSequence(DecimalArray):
+    """Helper class for testing error handling in _from_sequence."""
+
+    @classmethod
+    def _from_sequence(cls, scalars, *, dtype=None, copy=False):
+        raise KeyError("For the test")
+
+
+class DecimalArrayWithoutCoercion(DecimalArrayWithoutFromSequence):
+    @classmethod
+    def _create_arithmetic_method(cls, op):
+        return cls._create_method(op, coerce_to_dtype=False)
+
+
+DecimalArrayWithoutCoercion._add_arithmetic_ops()
+
+
+def test_combine_from_sequence_raises(monkeypatch):
+    # https://github.com/pandas-dev/pandas/issues/22850
+    cls = DecimalArrayWithoutFromSequence
+
+    @classmethod
+    def construct_array_type(cls):
+        return DecimalArrayWithoutFromSequence
+
+    monkeypatch.setattr(DecimalDtype, "construct_array_type", construct_array_type)
+
+    arr = cls([decimal.Decimal("1.0"), decimal.Decimal("2.0")])
+    ser = pd.Series(arr)
+    result = ser.combine(ser, operator.add)
+
+    # note: object dtype
+    expected = pd.Series(
+        [decimal.Decimal("2.0"), decimal.Decimal("4.0")], dtype="object"
+    )
+    tm.assert_series_equal(result, expected)
+
+
+@pytest.mark.parametrize(
+    "class_", [DecimalArrayWithoutFromSequence, DecimalArrayWithoutCoercion]
+)
+def test_scalar_ops_from_sequence_raises(class_):
+    # op(EA, EA) should return an EA, or an ndarray if it's not possible
+    # to return an EA with the return values.
+    arr = class_([decimal.Decimal("1.0"), decimal.Decimal("2.0")])
+    result = arr + arr
+    expected = np.array(
+        [decimal.Decimal("2.0"), decimal.Decimal("4.0")], dtype="object"
+    )
+    tm.assert_numpy_array_equal(result, expected)
+
+
+@pytest.mark.parametrize(
+    "reverse, expected_div, expected_mod",
+    [(False, [0, 1, 1, 2], [1, 0, 1, 0]), (True, [2, 1, 0, 0], [0, 0, 2, 2])],
+)
+def test_divmod_array(reverse, expected_div, expected_mod):
+    # https://github.com/pandas-dev/pandas/issues/22930
+    arr = to_decimal([1, 2, 3, 4])
+    if reverse:
+        div, mod = divmod(2, arr)
+    else:
+        div, mod = divmod(arr, 2)
+    expected_div = to_decimal(expected_div)
+    expected_mod = to_decimal(expected_mod)
+
+    tm.assert_extension_array_equal(div, expected_div)
+    tm.assert_extension_array_equal(mod, expected_mod)
+
+
+def test_ufunc_fallback(data):
+    a = data[:5]
+    s = pd.Series(a, index=range(3, 8))
+    result = np.abs(s)
+    expected = pd.Series(np.abs(a), index=range(3, 8))
+    tm.assert_series_equal(result, expected)
+
+
+def test_array_ufunc():
+    a = to_decimal([1, 2, 3])
+    result = np.exp(a)
+    expected = to_decimal(np.exp(a._data))
+    tm.assert_extension_array_equal(result, expected)
+
+
+def test_array_ufunc_series():
+    a = to_decimal([1, 2, 3])
+    s = pd.Series(a)
+    result = np.exp(s)
+    expected = pd.Series(to_decimal(np.exp(a._data)))
+    tm.assert_series_equal(result, expected)
+
+
+def test_array_ufunc_series_scalar_other():
+    # check _HANDLED_TYPES
+    a = to_decimal([1, 2, 3])
+    s = pd.Series(a)
+    result = np.add(s, decimal.Decimal(1))
+    expected = pd.Series(np.add(a, decimal.Decimal(1)))
+    tm.assert_series_equal(result, expected)
+
+
+def test_array_ufunc_series_defer():
+    a = to_decimal([1, 2, 3])
+    s = pd.Series(a)
+
+    expected = pd.Series(to_decimal([2, 4, 6]))
+    r1 = np.add(s, a)
+    r2 = np.add(a, s)
+
+    tm.assert_series_equal(r1, expected)
+    tm.assert_series_equal(r2, expected)
+
+
+def test_groupby_agg():
+    # Ensure that the result of agg is inferred to be decimal dtype
+    # https://github.com/pandas-dev/pandas/issues/29141
+
+    data = make_data()[:5]
+    df = pd.DataFrame(
+        {"id1": [0, 0, 0, 1, 1], "id2": [0, 1, 0, 1, 1], "decimals": DecimalArray(data)}
+    )
+
+    # single key, selected column
+    expected = pd.Series(to_decimal([data[0], data[3]]))
+    result = df.groupby("id1")["decimals"].agg(lambda x: x.iloc[0])
+    tm.assert_series_equal(result, expected, check_names=False)
+    result = df["decimals"].groupby(df["id1"]).agg(lambda x: x.iloc[0])
+    tm.assert_series_equal(result, expected, check_names=False)
+
+    # multiple keys, selected column
+    expected = pd.Series(
+        to_decimal([data[0], data[1], data[3]]),
+        index=pd.MultiIndex.from_tuples([(0, 0), (0, 1), (1, 1)]),
+    )
+    result = df.groupby(["id1", "id2"])["decimals"].agg(lambda x: x.iloc[0])
+    tm.assert_series_equal(result, expected, check_names=False)
+    result = df["decimals"].groupby([df["id1"], df["id2"]]).agg(lambda x: x.iloc[0])
+    tm.assert_series_equal(result, expected, check_names=False)
+
+    # multiple columns
+    expected = pd.DataFrame({"id2": [0, 1], "decimals": to_decimal([data[0], data[3]])})
+    result = df.groupby("id1").agg(lambda x: x.iloc[0])
+    tm.assert_frame_equal(result, expected, check_names=False)
+
+
+def test_groupby_agg_ea_method(monkeypatch):
+    # Ensure that the result of agg is inferred to be decimal dtype
+    # https://github.com/pandas-dev/pandas/issues/29141
+
+    def DecimalArray__my_sum(self):
+        return np.sum(np.array(self))
+
+    monkeypatch.setattr(DecimalArray, "my_sum", DecimalArray__my_sum, raising=False)
+
+    data = make_data()[:5]
+    df = pd.DataFrame({"id": [0, 0, 0, 1, 1], "decimals": DecimalArray(data)})
+    expected = pd.Series(to_decimal([data[0] + data[1] + data[2], data[3] + data[4]]))
+
+    result = df.groupby("id")["decimals"].agg(lambda x: x.values.my_sum())
+    tm.assert_series_equal(result, expected, check_names=False)
+    s = pd.Series(DecimalArray(data))
+    grouper = np.array([0, 0, 0, 1, 1], dtype=np.int64)
+    result = s.groupby(grouper).agg(lambda x: x.values.my_sum())
+    tm.assert_series_equal(result, expected, check_names=False)
+
+
+def test_indexing_no_materialize(monkeypatch):
+    # See https://github.com/pandas-dev/pandas/issues/29708
+    # Ensure that indexing operations do not materialize (convert to a numpy
+    # array) the ExtensionArray unnecessary
+
+    def DecimalArray__array__(self, dtype=None):
+        raise Exception("tried to convert a DecimalArray to a numpy array")
+
+    monkeypatch.setattr(DecimalArray, "__array__", DecimalArray__array__, raising=False)
+
+    data = make_data()
+    s = pd.Series(DecimalArray(data))
+    df = pd.DataFrame({"a": s, "b": range(len(s))})
+
+    # ensure the following operations do not raise an error
+    s[s > 0.5]
+    df[s > 0.5]
+    s.at[0]
+    df.at[0, "a"]
+
+
+def test_to_numpy_keyword():
+    # test the extra keyword
+    values = [decimal.Decimal("1.1111"), decimal.Decimal("2.2222")]
+    expected = np.array(
+        [decimal.Decimal("1.11"), decimal.Decimal("2.22")], dtype="object"
+    )
+    a = pd.array(values, dtype="decimal")
+    result = a.to_numpy(decimals=2)
+    tm.assert_numpy_array_equal(result, expected)
+
+    result = pd.Series(a).to_numpy(decimals=2)
+    tm.assert_numpy_array_equal(result, expected)
+
+
+def test_array_copy_on_write(using_copy_on_write):
+    df = pd.DataFrame({"a": [decimal.Decimal(2), decimal.Decimal(3)]}, dtype="object")
+    df2 = df.astype(DecimalDtype())
+    df.iloc[0, 0] = 0
+    if using_copy_on_write:
+        expected = pd.DataFrame(
+            {"a": [decimal.Decimal(2), decimal.Decimal(3)]}, dtype=DecimalDtype()
+        )
+        tm.assert_equal(df2.values, expected.values)

env-llmeval/lib/python3.10/site-packages/pandas/tests/extension/list/__init__.py

@@ -0,0 +1,7 @@
+from pandas.tests.extension.list.array import (
+    ListArray,
+    ListDtype,
+    make_data,
+)
+
+__all__ = ["ListArray", "ListDtype", "make_data"]

env-llmeval/lib/python3.10/site-packages/pandas/tests/extension/list/array.py

@@ -0,0 +1,137 @@
+"""
+Test extension array for storing nested data in a pandas container.
+
+The ListArray stores an ndarray of lists.
+"""
+from __future__ import annotations
+
+import numbers
+import string
+from typing import TYPE_CHECKING
+
+import numpy as np
+
+from pandas.core.dtypes.base import ExtensionDtype
+
+import pandas as pd
+from pandas.api.types import (
+    is_object_dtype,
+    is_string_dtype,
+)
+from pandas.core.arrays import ExtensionArray
+
+if TYPE_CHECKING:
+    from pandas._typing import type_t
+
+
+class ListDtype(ExtensionDtype):
+    type = list
+    name = "list"
+    na_value = np.nan
+
+    @classmethod
+    def construct_array_type(cls) -> type_t[ListArray]:
+        """
+        Return the array type associated with this dtype.
+
+        Returns
+        -------
+        type
+        """
+        return ListArray
+
+
+class ListArray(ExtensionArray):
+    dtype = ListDtype()
+    __array_priority__ = 1000
+
+    def __init__(self, values, dtype=None, copy=False) -> None:
+        if not isinstance(values, np.ndarray):
+            raise TypeError("Need to pass a numpy array as values")
+        for val in values:
+            if not isinstance(val, self.dtype.type) and not pd.isna(val):
+                raise TypeError("All values must be of type " + str(self.dtype.type))
+        self.data = values
+
+    @classmethod
+    def _from_sequence(cls, scalars, *, dtype=None, copy=False):
+        data = np.empty(len(scalars), dtype=object)
+        data[:] = scalars
+        return cls(data)
+
+    def __getitem__(self, item):
+        if isinstance(item, numbers.Integral):
+            return self.data[item]
+        else:
+            # slice, list-like, mask
+            return type(self)(self.data[item])
+
+    def __len__(self) -> int:
+        return len(self.data)
+
+    def isna(self):
+        return np.array(
+            [not isinstance(x, list) and np.isnan(x) for x in self.data], dtype=bool
+        )
+
+    def take(self, indexer, allow_fill=False, fill_value=None):
+        # re-implement here, since NumPy has trouble setting
+        # sized objects like UserDicts into scalar slots of
+        # an ndarary.
+        indexer = np.asarray(indexer)
+        msg = (
+            "Index is out of bounds or cannot do a "
+            "non-empty take from an empty array."
+        )
+
+        if allow_fill:
+            if fill_value is None:
+                fill_value = self.dtype.na_value
+            # bounds check
+            if (indexer < -1).any():
+                raise ValueError
+            try:
+                output = [
+                    self.data[loc] if loc != -1 else fill_value for loc in indexer
+                ]
+            except IndexError as err:
+                raise IndexError(msg) from err
+        else:
+            try:
+                output = [self.data[loc] for loc in indexer]
+            except IndexError as err:
+                raise IndexError(msg) from err
+
+        return self._from_sequence(output)
+
+    def copy(self):
+        return type(self)(self.data[:])
+
+    def astype(self, dtype, copy=True):
+        if isinstance(dtype, type(self.dtype)) and dtype == self.dtype:
+            if copy:
+                return self.copy()
+            return self
+        elif is_string_dtype(dtype) and not is_object_dtype(dtype):
+            # numpy has problems with astype(str) for nested elements
+            return np.array([str(x) for x in self.data], dtype=dtype)
+        elif not copy:
+            return np.asarray(self.data, dtype=dtype)
+        else:
+            return np.array(self.data, dtype=dtype, copy=copy)
+
+    @classmethod
+    def _concat_same_type(cls, to_concat):
+        data = np.concatenate([x.data for x in to_concat])
+        return cls(data)
+
+
+def make_data():
+    # TODO: Use a regular dict. See _NDFrameIndexer._setitem_with_indexer
+    rng = np.random.default_rng(2)
+    data = np.empty(100, dtype=object)
+    data[:] = [
+        [rng.choice(list(string.ascii_letters)) for _ in range(rng.integers(0, 10))]
+        for _ in range(100)
+    ]
+    return data

env-llmeval/lib/python3.10/site-packages/pandas/tests/extension/list/test_list.py

@@ -0,0 +1,33 @@
+import pytest
+
+import pandas as pd
+from pandas.tests.extension.list.array import (
+    ListArray,
+    ListDtype,
+    make_data,
+)
+
+
+@pytest.fixture
+def dtype():
+    return ListDtype()
+
+
+@pytest.fixture
+def data():
+    """Length-100 ListArray for semantics test."""
+    data = make_data()
+
+    while len(data[0]) == len(data[1]):
+        data = make_data()
+
+    return ListArray(data)
+
+
+def test_to_csv(data):
+    # https://github.com/pandas-dev/pandas/issues/28840
+    # array with list-likes fail when doing astype(str) on the numpy array
+    # which was done in get_values_for_csv
+    df = pd.DataFrame({"a": data})
+    res = df.to_csv()
+    assert str(data[0]) in res

env-llmeval/lib/python3.10/site-packages/pandas/tests/extension/test_categorical.py

@@ -0,0 +1,200 @@
+"""
+This file contains a minimal set of tests for compliance with the extension
+array interface test suite, and should contain no other tests.
+The test suite for the full functionality of the array is located in
+`pandas/tests/arrays/`.
+
+The tests in this file are inherited from the BaseExtensionTests, and only
+minimal tweaks should be applied to get the tests passing (by overwriting a
+parent method).
+
+Additional tests should either be added to one of the BaseExtensionTests
+classes (if they are relevant for the extension interface for all dtypes), or
+be added to the array-specific tests in `pandas/tests/arrays/`.
+
+"""
+import string
+
+import numpy as np
+import pytest
+
+from pandas._config import using_pyarrow_string_dtype
+
+import pandas as pd
+from pandas import Categorical
+import pandas._testing as tm
+from pandas.api.types import CategoricalDtype
+from pandas.tests.extension import base
+
+
+def make_data():
+    while True:
+        values = np.random.default_rng(2).choice(list(string.ascii_letters), size=100)
+        # ensure we meet the requirements
+        # 1. first two not null
+        # 2. first and second are different
+        if values[0] != values[1]:
+            break
+    return values
+
+
+@pytest.fixture
+def dtype():
+    return CategoricalDtype()
+
+
+@pytest.fixture
+def data():
+    """Length-100 array for this type.
+
+    * data[0] and data[1] should both be non missing
+    * data[0] and data[1] should not be equal
+    """
+    return Categorical(make_data())
+
+
+@pytest.fixture
+def data_missing():
+    """Length 2 array with [NA, Valid]"""
+    return Categorical([np.nan, "A"])
+
+
+@pytest.fixture
+def data_for_sorting():
+    return Categorical(["A", "B", "C"], categories=["C", "A", "B"], ordered=True)
+
+
+@pytest.fixture
+def data_missing_for_sorting():
+    return Categorical(["A", None, "B"], categories=["B", "A"], ordered=True)
+
+
+@pytest.fixture
+def data_for_grouping():
+    return Categorical(["a", "a", None, None, "b", "b", "a", "c"])
+
+
+class TestCategorical(base.ExtensionTests):
+    @pytest.mark.xfail(reason="Memory usage doesn't match")
+    def test_memory_usage(self, data):
+        # TODO: Is this deliberate?
+        super().test_memory_usage(data)
+
+    def test_contains(self, data, data_missing):
+        # GH-37867
+        # na value handling in Categorical.__contains__ is deprecated.
+        # See base.BaseInterFaceTests.test_contains for more details.
+
+        na_value = data.dtype.na_value
+        # ensure data without missing values
+        data = data[~data.isna()]
+
+        # first elements are non-missing
+        assert data[0] in data
+        assert data_missing[0] in data_missing
+
+        # check the presence of na_value
+        assert na_value in data_missing
+        assert na_value not in data
+
+        # Categoricals can contain other nan-likes than na_value
+        for na_value_obj in tm.NULL_OBJECTS:
+            if na_value_obj is na_value:
+                continue
+            assert na_value_obj not in data
+            # this section suffers from super method
+            if not using_pyarrow_string_dtype():
+                assert na_value_obj in data_missing
+
+    def test_empty(self, dtype):
+        cls = dtype.construct_array_type()
+        result = cls._empty((4,), dtype=dtype)
+
+        assert isinstance(result, cls)
+        # the dtype we passed is not initialized, so will not match the
+        #  dtype on our result.
+        assert result.dtype == CategoricalDtype([])
+
+    @pytest.mark.skip(reason="Backwards compatibility")
+    def test_getitem_scalar(self, data):
+        # CategoricalDtype.type isn't "correct" since it should
+        # be a parent of the elements (object). But don't want
+        # to break things by changing.
+        super().test_getitem_scalar(data)
+
+    @pytest.mark.xfail(reason="Unobserved categories included")
+    def test_value_counts(self, all_data, dropna):
+        return super().test_value_counts(all_data, dropna)
+
+    def test_combine_add(self, data_repeated):
+        # GH 20825
+        # When adding categoricals in combine, result is a string
+        orig_data1, orig_data2 = data_repeated(2)
+        s1 = pd.Series(orig_data1)
+        s2 = pd.Series(orig_data2)
+        result = s1.combine(s2, lambda x1, x2: x1 + x2)
+        expected = pd.Series(
+            [a + b for (a, b) in zip(list(orig_data1), list(orig_data2))]
+        )
+        tm.assert_series_equal(result, expected)
+
+        val = s1.iloc[0]
+        result = s1.combine(val, lambda x1, x2: x1 + x2)
+        expected = pd.Series([a + val for a in list(orig_data1)])
+        tm.assert_series_equal(result, expected)
+
+    @pytest.mark.parametrize("na_action", [None, "ignore"])
+    def test_map(self, data, na_action):
+        result = data.map(lambda x: x, na_action=na_action)
+        tm.assert_extension_array_equal(result, data)
+
+    def test_arith_frame_with_scalar(self, data, all_arithmetic_operators, request):
+        # frame & scalar
+        op_name = all_arithmetic_operators
+        if op_name == "__rmod__":
+            request.applymarker(
+                pytest.mark.xfail(
+                    reason="rmod never called when string is first argument"
+                )
+            )
+        super().test_arith_frame_with_scalar(data, op_name)
+
+    def test_arith_series_with_scalar(self, data, all_arithmetic_operators, request):
+        op_name = all_arithmetic_operators
+        if op_name == "__rmod__":
+            request.applymarker(
+                pytest.mark.xfail(
+                    reason="rmod never called when string is first argument"
+                )
+            )
+        super().test_arith_series_with_scalar(data, op_name)
+
+    def _compare_other(self, ser: pd.Series, data, op, other):
+        op_name = f"__{op.__name__}__"
+        if op_name not in ["__eq__", "__ne__"]:
+            msg = "Unordered Categoricals can only compare equality or not"
+            with pytest.raises(TypeError, match=msg):
+                op(data, other)
+        else:
+            return super()._compare_other(ser, data, op, other)
+
+    @pytest.mark.xfail(reason="Categorical overrides __repr__")
+    @pytest.mark.parametrize("size", ["big", "small"])
+    def test_array_repr(self, data, size):
+        super().test_array_repr(data, size)
+
+    @pytest.mark.xfail(reason="TBD")
+    @pytest.mark.parametrize("as_index", [True, False])
+    def test_groupby_extension_agg(self, as_index, data_for_grouping):
+        super().test_groupby_extension_agg(as_index, data_for_grouping)
+
+
+class Test2DCompat(base.NDArrayBacked2DTests):
+    def test_repr_2d(self, data):
+        # Categorical __repr__ doesn't include "Categorical", so we need
+        #  to special-case
+        res = repr(data.reshape(1, -1))
+        assert res.count("\nCategories") == 1
+
+        res = repr(data.reshape(-1, 1))
+        assert res.count("\nCategories") == 1

env-llmeval/lib/python3.10/site-packages/pandas/tests/extension/test_common.py

@@ -0,0 +1,105 @@
+import numpy as np
+import pytest
+
+from pandas.core.dtypes import dtypes
+from pandas.core.dtypes.common import is_extension_array_dtype
+
+import pandas as pd
+import pandas._testing as tm
+from pandas.core.arrays import ExtensionArray
+
+
+class DummyDtype(dtypes.ExtensionDtype):
+    pass
+
+
+class DummyArray(ExtensionArray):
+    def __init__(self, data) -> None:
+        self.data = data
+
+    def __array__(self, dtype=None, copy=None):
+        return self.data
+
+    @property
+    def dtype(self):
+        return DummyDtype()
+
+    def astype(self, dtype, copy=True):
+        # we don't support anything but a single dtype
+        if isinstance(dtype, DummyDtype):
+            if copy:
+                return type(self)(self.data)
+            return self
+        elif not copy:
+            return np.asarray(self, dtype=dtype)
+        else:
+            return np.array(self, dtype=dtype, copy=copy)
+
+
+class TestExtensionArrayDtype:
+    @pytest.mark.parametrize(
+        "values",
+        [
+            pd.Categorical([]),
+            pd.Categorical([]).dtype,
+            pd.Series(pd.Categorical([])),
+            DummyDtype(),
+            DummyArray(np.array([1, 2])),
+        ],
+    )
+    def test_is_extension_array_dtype(self, values):
+        assert is_extension_array_dtype(values)
+
+    @pytest.mark.parametrize("values", [np.array([]), pd.Series(np.array([]))])
+    def test_is_not_extension_array_dtype(self, values):
+        assert not is_extension_array_dtype(values)
+
+
+def test_astype():
+    arr = DummyArray(np.array([1, 2, 3]))
+    expected = np.array([1, 2, 3], dtype=object)
+
+    result = arr.astype(object)
+    tm.assert_numpy_array_equal(result, expected)
+
+    result = arr.astype("object")
+    tm.assert_numpy_array_equal(result, expected)
+
+
+def test_astype_no_copy():
+    arr = DummyArray(np.array([1, 2, 3], dtype=np.int64))
+    result = arr.astype(arr.dtype, copy=False)
+
+    assert arr is result
+
+    result = arr.astype(arr.dtype)
+    assert arr is not result
+
+
+@pytest.mark.parametrize("dtype", [dtypes.CategoricalDtype(), dtypes.IntervalDtype()])
+def test_is_extension_array_dtype(dtype):
+    assert isinstance(dtype, dtypes.ExtensionDtype)
+    assert is_extension_array_dtype(dtype)
+
+
+class CapturingStringArray(pd.arrays.StringArray):
+    """Extend StringArray to capture arguments to __getitem__"""
+
+    def __getitem__(self, item):
+        self.last_item_arg = item
+        return super().__getitem__(item)
+
+
+def test_ellipsis_index():
+    # GH#42430 1D slices over extension types turn into N-dimensional slices
+    #  over ExtensionArrays
+    df = pd.DataFrame(
+        {"col1": CapturingStringArray(np.array(["hello", "world"], dtype=object))}
+    )
+    _ = df.iloc[:1]
+
+    # String comparison because there's no native way to compare slices.
+    # Before the fix for GH#42430, last_item_arg would get set to the 2D slice
+    # (Ellipsis, slice(None, 1, None))
+    out = df["col1"].array.last_item_arg
+    assert str(out) == "slice(None, 1, None)"

env-llmeval/lib/python3.10/site-packages/pandas/tests/extension/test_datetime.py

@@ -0,0 +1,144 @@
+"""
+This file contains a minimal set of tests for compliance with the extension
+array interface test suite, and should contain no other tests.
+The test suite for the full functionality of the array is located in
+`pandas/tests/arrays/`.
+
+The tests in this file are inherited from the BaseExtensionTests, and only
+minimal tweaks should be applied to get the tests passing (by overwriting a
+parent method).
+
+Additional tests should either be added to one of the BaseExtensionTests
+classes (if they are relevant for the extension interface for all dtypes), or
+be added to the array-specific tests in `pandas/tests/arrays/`.
+
+"""
+import numpy as np
+import pytest
+
+from pandas.core.dtypes.dtypes import DatetimeTZDtype
+
+import pandas as pd
+import pandas._testing as tm
+from pandas.core.arrays import DatetimeArray
+from pandas.tests.extension import base
+
+
+@pytest.fixture(params=["US/Central"])
+def dtype(request):
+    return DatetimeTZDtype(unit="ns", tz=request.param)
+
+
+@pytest.fixture
+def data(dtype):
+    data = DatetimeArray._from_sequence(
+        pd.date_range("2000", periods=100, tz=dtype.tz), dtype=dtype
+    )
+    return data
+
+
+@pytest.fixture
+def data_missing(dtype):
+    return DatetimeArray._from_sequence(
+        np.array(["NaT", "2000-01-01"], dtype="datetime64[ns]"), dtype=dtype
+    )
+
+
+@pytest.fixture
+def data_for_sorting(dtype):
+    a = pd.Timestamp("2000-01-01")
+    b = pd.Timestamp("2000-01-02")
+    c = pd.Timestamp("2000-01-03")
+    return DatetimeArray._from_sequence(
+        np.array([b, c, a], dtype="datetime64[ns]"), dtype=dtype
+    )
+
+
+@pytest.fixture
+def data_missing_for_sorting(dtype):
+    a = pd.Timestamp("2000-01-01")
+    b = pd.Timestamp("2000-01-02")
+    return DatetimeArray._from_sequence(
+        np.array([b, "NaT", a], dtype="datetime64[ns]"), dtype=dtype
+    )
+
+
+@pytest.fixture
+def data_for_grouping(dtype):
+    """
+    Expected to be like [B, B, NA, NA, A, A, B, C]
+
+    Where A < B < C and NA is missing
+    """
+    a = pd.Timestamp("2000-01-01")
+    b = pd.Timestamp("2000-01-02")
+    c = pd.Timestamp("2000-01-03")
+    na = "NaT"
+    return DatetimeArray._from_sequence(
+        np.array([b, b, na, na, a, a, b, c], dtype="datetime64[ns]"), dtype=dtype
+    )
+
+
+@pytest.fixture
+def na_cmp():
+    def cmp(a, b):
+        return a is pd.NaT and a is b
+
+    return cmp
+
+
+# ----------------------------------------------------------------------------
+class TestDatetimeArray(base.ExtensionTests):
+    def _get_expected_exception(self, op_name, obj, other):
+        if op_name in ["__sub__", "__rsub__"]:
+            return None
+        return super()._get_expected_exception(op_name, obj, other)
+
+    def _supports_accumulation(self, ser, op_name: str) -> bool:
+        return op_name in ["cummin", "cummax"]
+
+    def _supports_reduction(self, obj, op_name: str) -> bool:
+        return op_name in ["min", "max", "median", "mean", "std", "any", "all"]
+
+    @pytest.mark.parametrize("skipna", [True, False])
+    def test_reduce_series_boolean(self, data, all_boolean_reductions, skipna):
+        meth = all_boolean_reductions
+        msg = f"'{meth}' with datetime64 dtypes is deprecated and will raise in"
+        with tm.assert_produces_warning(
+            FutureWarning, match=msg, check_stacklevel=False
+        ):
+            super().test_reduce_series_boolean(data, all_boolean_reductions, skipna)
+
+    def test_series_constructor(self, data):
+        # Series construction drops any .freq attr
+        data = data._with_freq(None)
+        super().test_series_constructor(data)
+
+    @pytest.mark.parametrize("na_action", [None, "ignore"])
+    def test_map(self, data, na_action):
+        result = data.map(lambda x: x, na_action=na_action)
+        tm.assert_extension_array_equal(result, data)
+
+    def check_reduce(self, ser: pd.Series, op_name: str, skipna: bool):
+        if op_name in ["median", "mean", "std"]:
+            alt = ser.astype("int64")
+
+            res_op = getattr(ser, op_name)
+            exp_op = getattr(alt, op_name)
+            result = res_op(skipna=skipna)
+            expected = exp_op(skipna=skipna)
+            if op_name in ["mean", "median"]:
+                # error: Item "dtype[Any]" of "dtype[Any] | ExtensionDtype"
+                # has no attribute "tz"
+                tz = ser.dtype.tz  # type: ignore[union-attr]
+                expected = pd.Timestamp(expected, tz=tz)
+            else:
+                expected = pd.Timedelta(expected)
+            tm.assert_almost_equal(result, expected)
+
+        else:
+            return super().check_reduce(ser, op_name, skipna)
+
+
+class Test2DCompat(base.NDArrayBacked2DTests):
+    pass

env-llmeval/lib/python3.10/site-packages/pandas/tests/extension/test_extension.py

@@ -0,0 +1,26 @@
+"""
+Tests for behavior if an author does *not* implement EA methods.
+"""
+import numpy as np
+import pytest
+
+from pandas.core.arrays import ExtensionArray
+
+
+class MyEA(ExtensionArray):
+    def __init__(self, values) -> None:
+        self._values = values
+
+
+@pytest.fixture
+def data():
+    arr = np.arange(10)
+    return MyEA(arr)
+
+
+class TestExtensionArray:
+    def test_errors(self, data, all_arithmetic_operators):
+        # invalid ops
+        op_name = all_arithmetic_operators
+        with pytest.raises(AttributeError):
+            getattr(data, op_name)

env-llmeval/lib/python3.10/site-packages/pandas/tests/extension/test_interval.py

@@ -0,0 +1,98 @@
+"""
+This file contains a minimal set of tests for compliance with the extension
+array interface test suite, and should contain no other tests.
+The test suite for the full functionality of the array is located in
+`pandas/tests/arrays/`.
+
+The tests in this file are inherited from the BaseExtensionTests, and only
+minimal tweaks should be applied to get the tests passing (by overwriting a
+parent method).
+
+Additional tests should either be added to one of the BaseExtensionTests
+classes (if they are relevant for the extension interface for all dtypes), or
+be added to the array-specific tests in `pandas/tests/arrays/`.
+
+"""
+from __future__ import annotations
+
+from typing import TYPE_CHECKING
+
+import numpy as np
+import pytest
+
+from pandas.core.dtypes.dtypes import IntervalDtype
+
+from pandas import Interval
+from pandas.core.arrays import IntervalArray
+from pandas.tests.extension import base
+
+if TYPE_CHECKING:
+    import pandas as pd
+
+
+def make_data():
+    N = 100
+    left_array = np.random.default_rng(2).uniform(size=N).cumsum()
+    right_array = left_array + np.random.default_rng(2).uniform(size=N)
+    return [Interval(left, right) for left, right in zip(left_array, right_array)]
+
+
+@pytest.fixture
+def dtype():
+    return IntervalDtype()
+
+
+@pytest.fixture
+def data():
+    """Length-100 PeriodArray for semantics test."""
+    return IntervalArray(make_data())
+
+
+@pytest.fixture
+def data_missing():
+    """Length 2 array with [NA, Valid]"""
+    return IntervalArray.from_tuples([None, (0, 1)])
+
+
+@pytest.fixture
+def data_for_twos():
+    pytest.skip("Interval is not a numeric dtype")
+
+
+@pytest.fixture
+def data_for_sorting():
+    return IntervalArray.from_tuples([(1, 2), (2, 3), (0, 1)])
+
+
+@pytest.fixture
+def data_missing_for_sorting():
+    return IntervalArray.from_tuples([(1, 2), None, (0, 1)])
+
+
+@pytest.fixture
+def data_for_grouping():
+    a = (0, 1)
+    b = (1, 2)
+    c = (2, 3)
+    return IntervalArray.from_tuples([b, b, None, None, a, a, b, c])
+
+
+class TestIntervalArray(base.ExtensionTests):
+    divmod_exc = TypeError
+
+    def _supports_reduction(self, ser: pd.Series, op_name: str) -> bool:
+        return op_name in ["min", "max"]
+
+    @pytest.mark.xfail(
+        reason="Raises with incorrect message bc it disallows *all* listlikes "
+        "instead of just wrong-length listlikes"
+    )
+    def test_fillna_length_mismatch(self, data_missing):
+        super().test_fillna_length_mismatch(data_missing)
+
+
+# TODO: either belongs in tests.arrays.interval or move into base tests.
+def test_fillna_non_scalar_raises(data_missing):
+    msg = "can only insert Interval objects and NA into an IntervalArray"
+    with pytest.raises(TypeError, match=msg):
+        data_missing.fillna([1, 1])

env-llmeval/lib/python3.10/site-packages/pandas/tests/extension/test_masked.py

@@ -0,0 +1,417 @@
+"""
+This file contains a minimal set of tests for compliance with the extension
+array interface test suite, and should contain no other tests.
+The test suite for the full functionality of the array is located in
+`pandas/tests/arrays/`.
+
+The tests in this file are inherited from the BaseExtensionTests, and only
+minimal tweaks should be applied to get the tests passing (by overwriting a
+parent method).
+
+Additional tests should either be added to one of the BaseExtensionTests
+classes (if they are relevant for the extension interface for all dtypes), or
+be added to the array-specific tests in `pandas/tests/arrays/`.
+
+"""
+import warnings
+
+import numpy as np
+import pytest
+
+from pandas.compat import (
+    IS64,
+    is_platform_windows,
+)
+from pandas.compat.numpy import np_version_gt2
+
+from pandas.core.dtypes.common import (
+    is_float_dtype,
+    is_signed_integer_dtype,
+    is_unsigned_integer_dtype,
+)
+
+import pandas as pd
+import pandas._testing as tm
+from pandas.core.arrays.boolean import BooleanDtype
+from pandas.core.arrays.floating import (
+    Float32Dtype,
+    Float64Dtype,
+)
+from pandas.core.arrays.integer import (
+    Int8Dtype,
+    Int16Dtype,
+    Int32Dtype,
+    Int64Dtype,
+    UInt8Dtype,
+    UInt16Dtype,
+    UInt32Dtype,
+    UInt64Dtype,
+)
+from pandas.tests.extension import base
+
+is_windows_or_32bit = (is_platform_windows() and not np_version_gt2) or not IS64
+
+pytestmark = [
+    pytest.mark.filterwarnings(
+        "ignore:invalid value encountered in divide:RuntimeWarning"
+    ),
+    pytest.mark.filterwarnings("ignore:Mean of empty slice:RuntimeWarning"),
+    # overflow only relevant for Floating dtype cases cases
+    pytest.mark.filterwarnings("ignore:overflow encountered in reduce:RuntimeWarning"),
+]
+
+
+def make_data():
+    return list(range(1, 9)) + [pd.NA] + list(range(10, 98)) + [pd.NA] + [99, 100]
+
+
+def make_float_data():
+    return (
+        list(np.arange(0.1, 0.9, 0.1))
+        + [pd.NA]
+        + list(np.arange(1, 9.8, 0.1))
+        + [pd.NA]
+        + [9.9, 10.0]
+    )
+
+
+def make_bool_data():
+    return [True, False] * 4 + [np.nan] + [True, False] * 44 + [np.nan] + [True, False]
+
+
+@pytest.fixture(
+    params=[
+        Int8Dtype,
+        Int16Dtype,
+        Int32Dtype,
+        Int64Dtype,
+        UInt8Dtype,
+        UInt16Dtype,
+        UInt32Dtype,
+        UInt64Dtype,
+        Float32Dtype,
+        Float64Dtype,
+        BooleanDtype,
+    ]
+)
+def dtype(request):
+    return request.param()
+
+
+@pytest.fixture
+def data(dtype):
+    if dtype.kind == "f":
+        data = make_float_data()
+    elif dtype.kind == "b":
+        data = make_bool_data()
+    else:
+        data = make_data()
+    return pd.array(data, dtype=dtype)
+
+
+@pytest.fixture
+def data_for_twos(dtype):
+    if dtype.kind == "b":
+        return pd.array(np.ones(100), dtype=dtype)
+    return pd.array(np.ones(100) * 2, dtype=dtype)
+
+
+@pytest.fixture
+def data_missing(dtype):
+    if dtype.kind == "f":
+        return pd.array([pd.NA, 0.1], dtype=dtype)
+    elif dtype.kind == "b":
+        return pd.array([np.nan, True], dtype=dtype)
+    return pd.array([pd.NA, 1], dtype=dtype)
+
+
+@pytest.fixture
+def data_for_sorting(dtype):
+    if dtype.kind == "f":
+        return pd.array([0.1, 0.2, 0.0], dtype=dtype)
+    elif dtype.kind == "b":
+        return pd.array([True, True, False], dtype=dtype)
+    return pd.array([1, 2, 0], dtype=dtype)
+
+
+@pytest.fixture
+def data_missing_for_sorting(dtype):
+    if dtype.kind == "f":
+        return pd.array([0.1, pd.NA, 0.0], dtype=dtype)
+    elif dtype.kind == "b":
+        return pd.array([True, np.nan, False], dtype=dtype)
+    return pd.array([1, pd.NA, 0], dtype=dtype)
+
+
+@pytest.fixture
+def na_cmp():
+    # we are pd.NA
+    return lambda x, y: x is pd.NA and y is pd.NA
+
+
+@pytest.fixture
+def data_for_grouping(dtype):
+    if dtype.kind == "f":
+        b = 0.1
+        a = 0.0
+        c = 0.2
+    elif dtype.kind == "b":
+        b = True
+        a = False
+        c = b
+    else:
+        b = 1
+        a = 0
+        c = 2
+
+    na = pd.NA
+    return pd.array([b, b, na, na, a, a, b, c], dtype=dtype)
+
+
+class TestMaskedArrays(base.ExtensionTests):
+    @pytest.mark.parametrize("na_action", [None, "ignore"])
+    def test_map(self, data_missing, na_action):
+        result = data_missing.map(lambda x: x, na_action=na_action)
+        if data_missing.dtype == Float32Dtype():
+            # map roundtrips through objects, which converts to float64
+            expected = data_missing.to_numpy(dtype="float64", na_value=np.nan)
+        else:
+            expected = data_missing.to_numpy()
+        tm.assert_numpy_array_equal(result, expected)
+
+    def test_map_na_action_ignore(self, data_missing_for_sorting):
+        zero = data_missing_for_sorting[2]
+        result = data_missing_for_sorting.map(lambda x: zero, na_action="ignore")
+        if data_missing_for_sorting.dtype.kind == "b":
+            expected = np.array([False, pd.NA, False], dtype=object)
+        else:
+            expected = np.array([zero, np.nan, zero])
+        tm.assert_numpy_array_equal(result, expected)
+
+    def _get_expected_exception(self, op_name, obj, other):
+        try:
+            dtype = tm.get_dtype(obj)
+        except AttributeError:
+            # passed arguments reversed
+            dtype = tm.get_dtype(other)
+
+        if dtype.kind == "b":
+            if op_name.strip("_").lstrip("r") in ["pow", "truediv", "floordiv"]:
+                # match behavior with non-masked bool dtype
+                return NotImplementedError
+            elif op_name in ["__sub__", "__rsub__"]:
+                # exception message would include "numpy boolean subtract""
+                return TypeError
+            return None
+        return None
+
+    def _cast_pointwise_result(self, op_name: str, obj, other, pointwise_result):
+        sdtype = tm.get_dtype(obj)
+        expected = pointwise_result
+
+        if op_name in ("eq", "ne", "le", "ge", "lt", "gt"):
+            return expected.astype("boolean")
+
+        if sdtype.kind in "iu":
+            if op_name in ("__rtruediv__", "__truediv__", "__div__"):
+                with warnings.catch_warnings():
+                    warnings.filterwarnings(
+                        "ignore",
+                        "Downcasting object dtype arrays",
+                        category=FutureWarning,
+                    )
+                    filled = expected.fillna(np.nan)
+                expected = filled.astype("Float64")
+            else:
+                # combine method result in 'biggest' (int64) dtype
+                expected = expected.astype(sdtype)
+        elif sdtype.kind == "b":
+            if op_name in (
+                "__floordiv__",
+                "__rfloordiv__",
+                "__pow__",
+                "__rpow__",
+                "__mod__",
+                "__rmod__",
+            ):
+                # combine keeps boolean type
+                expected = expected.astype("Int8")
+
+            elif op_name in ("__truediv__", "__rtruediv__"):
+                # combine with bools does not generate the correct result
+                #  (numpy behaviour for div is to regard the bools as numeric)
+                op = self.get_op_from_name(op_name)
+                expected = self._combine(obj.astype(float), other, op)
+                expected = expected.astype("Float64")
+
+            if op_name == "__rpow__":
+                # for rpow, combine does not propagate NaN
+                result = getattr(obj, op_name)(other)
+                expected[result.isna()] = np.nan
+        else:
+            # combine method result in 'biggest' (float64) dtype
+            expected = expected.astype(sdtype)
+        return expected
+
+    def test_divmod_series_array(self, data, data_for_twos, request):
+        if data.dtype.kind == "b":
+            mark = pytest.mark.xfail(
+                reason="Inconsistency between floordiv and divmod; we raise for "
+                "floordiv but not for divmod. This matches what we do for "
+                "non-masked bool dtype."
+            )
+            request.applymarker(mark)
+        super().test_divmod_series_array(data, data_for_twos)
+
+    def test_combine_le(self, data_repeated):
+        # TODO: patching self is a bad pattern here
+        orig_data1, orig_data2 = data_repeated(2)
+        if orig_data1.dtype.kind == "b":
+            self._combine_le_expected_dtype = "boolean"
+        else:
+            # TODO: can we make this boolean?
+            self._combine_le_expected_dtype = object
+        super().test_combine_le(data_repeated)
+
+    def _supports_reduction(self, ser: pd.Series, op_name: str) -> bool:
+        if op_name in ["any", "all"] and ser.dtype.kind != "b":
+            pytest.skip(reason="Tested in tests/reductions/test_reductions.py")
+        return True
+
+    def check_reduce(self, ser: pd.Series, op_name: str, skipna: bool):
+        # overwrite to ensure pd.NA is tested instead of np.nan
+        # https://github.com/pandas-dev/pandas/issues/30958
+
+        cmp_dtype = "int64"
+        if ser.dtype.kind == "f":
+            # Item "dtype[Any]" of "Union[dtype[Any], ExtensionDtype]" has
+            # no attribute "numpy_dtype"
+            cmp_dtype = ser.dtype.numpy_dtype  # type: ignore[union-attr]
+        elif ser.dtype.kind == "b":
+            if op_name in ["min", "max"]:
+                cmp_dtype = "bool"
+
+        # TODO: prod with integer dtypes does *not* match the result we would
+        #  get if we used object for cmp_dtype. In that cae the object result
+        #  is a large integer while the non-object case overflows and returns 0
+        alt = ser.dropna().astype(cmp_dtype)
+        if op_name == "count":
+            result = getattr(ser, op_name)()
+            expected = getattr(alt, op_name)()
+        else:
+            result = getattr(ser, op_name)(skipna=skipna)
+            expected = getattr(alt, op_name)(skipna=skipna)
+            if not skipna and ser.isna().any() and op_name not in ["any", "all"]:
+                expected = pd.NA
+        tm.assert_almost_equal(result, expected)
+
+    def _get_expected_reduction_dtype(self, arr, op_name: str, skipna: bool):
+        if is_float_dtype(arr.dtype):
+            cmp_dtype = arr.dtype.name
+        elif op_name in ["mean", "median", "var", "std", "skew"]:
+            cmp_dtype = "Float64"
+        elif op_name in ["max", "min"]:
+            cmp_dtype = arr.dtype.name
+        elif arr.dtype in ["Int64", "UInt64"]:
+            cmp_dtype = arr.dtype.name
+        elif is_signed_integer_dtype(arr.dtype):
+            # TODO: Why does Window Numpy 2.0 dtype depend on skipna?
+            cmp_dtype = (
+                "Int32"
+                if (is_platform_windows() and (not np_version_gt2 or not skipna))
+                or not IS64
+                else "Int64"
+            )
+        elif is_unsigned_integer_dtype(arr.dtype):
+            cmp_dtype = (
+                "UInt32"
+                if (is_platform_windows() and (not np_version_gt2 or not skipna))
+                or not IS64
+                else "UInt64"
+            )
+        elif arr.dtype.kind == "b":
+            if op_name in ["mean", "median", "var", "std", "skew"]:
+                cmp_dtype = "Float64"
+            elif op_name in ["min", "max"]:
+                cmp_dtype = "boolean"
+            elif op_name in ["sum", "prod"]:
+                cmp_dtype = (
+                    "Int32"
+                    if (is_platform_windows() and (not np_version_gt2 or not skipna))
+                    or not IS64
+                    else "Int64"
+                )
+            else:
+                raise TypeError("not supposed to reach this")
+        else:
+            raise TypeError("not supposed to reach this")
+        return cmp_dtype
+
+    def _supports_accumulation(self, ser: pd.Series, op_name: str) -> bool:
+        return True
+
+    def check_accumulate(self, ser: pd.Series, op_name: str, skipna: bool):
+        # overwrite to ensure pd.NA is tested instead of np.nan
+        # https://github.com/pandas-dev/pandas/issues/30958
+        length = 64
+        if is_windows_or_32bit:
+            # Item "ExtensionDtype" of "Union[dtype[Any], ExtensionDtype]" has
+            # no attribute "itemsize"
+            if not ser.dtype.itemsize == 8:  # type: ignore[union-attr]
+                length = 32
+
+        if ser.dtype.name.startswith("U"):
+            expected_dtype = f"UInt{length}"
+        elif ser.dtype.name.startswith("I"):
+            expected_dtype = f"Int{length}"
+        elif ser.dtype.name.startswith("F"):
+            # Incompatible types in assignment (expression has type
+            # "Union[dtype[Any], ExtensionDtype]", variable has type "str")
+            expected_dtype = ser.dtype  # type: ignore[assignment]
+        elif ser.dtype.kind == "b":
+            if op_name in ("cummin", "cummax"):
+                expected_dtype = "boolean"
+            else:
+                expected_dtype = f"Int{length}"
+
+        if expected_dtype == "Float32" and op_name == "cumprod" and skipna:
+            # TODO: xfail?
+            pytest.skip(
+                f"Float32 precision lead to large differences with op {op_name} "
+                f"and skipna={skipna}"
+            )
+
+        if op_name == "cumsum":
+            result = getattr(ser, op_name)(skipna=skipna)
+            expected = pd.Series(
+                pd.array(
+                    getattr(ser.astype("float64"), op_name)(skipna=skipna),
+                    dtype=expected_dtype,
+                )
+            )
+            tm.assert_series_equal(result, expected)
+        elif op_name in ["cummax", "cummin"]:
+            result = getattr(ser, op_name)(skipna=skipna)
+            expected = pd.Series(
+                pd.array(
+                    getattr(ser.astype("float64"), op_name)(skipna=skipna),
+                    dtype=ser.dtype,
+                )
+            )
+            tm.assert_series_equal(result, expected)
+        elif op_name == "cumprod":
+            result = getattr(ser[:12], op_name)(skipna=skipna)
+            expected = pd.Series(
+                pd.array(
+                    getattr(ser[:12].astype("float64"), op_name)(skipna=skipna),
+                    dtype=expected_dtype,
+                )
+            )
+            tm.assert_series_equal(result, expected)
+
+        else:
+            raise NotImplementedError(f"{op_name} not supported")
+
+
+class Test2DCompat(base.Dim2CompatTests):
+    pass

env-llmeval/lib/python3.10/site-packages/pandas/tests/extension/test_numpy.py

@@ -0,0 +1,426 @@
+"""
+This file contains a minimal set of tests for compliance with the extension
+array interface test suite, and should contain no other tests.
+The test suite for the full functionality of the array is located in
+`pandas/tests/arrays/`.
+
+The tests in this file are inherited from the BaseExtensionTests, and only
+minimal tweaks should be applied to get the tests passing (by overwriting a
+parent method).
+
+Additional tests should either be added to one of the BaseExtensionTests
+classes (if they are relevant for the extension interface for all dtypes), or
+be added to the array-specific tests in `pandas/tests/arrays/`.
+
+Note: we do not bother with base.BaseIndexTests because NumpyExtensionArray
+will never be held in an Index.
+"""
+import numpy as np
+import pytest
+
+from pandas.core.dtypes.dtypes import NumpyEADtype
+
+import pandas as pd
+import pandas._testing as tm
+from pandas.api.types import is_object_dtype
+from pandas.core.arrays.numpy_ import NumpyExtensionArray
+from pandas.tests.extension import base
+
+orig_assert_attr_equal = tm.assert_attr_equal
+
+
+def _assert_attr_equal(attr: str, left, right, obj: str = "Attributes"):
+    """
+    patch tm.assert_attr_equal so NumpyEADtype("object") is closed enough to
+    np.dtype("object")
+    """
+    if attr == "dtype":
+        lattr = getattr(left, "dtype", None)
+        rattr = getattr(right, "dtype", None)
+        if isinstance(lattr, NumpyEADtype) and not isinstance(rattr, NumpyEADtype):
+            left = left.astype(lattr.numpy_dtype)
+        elif isinstance(rattr, NumpyEADtype) and not isinstance(lattr, NumpyEADtype):
+            right = right.astype(rattr.numpy_dtype)
+
+    orig_assert_attr_equal(attr, left, right, obj)
+
+
+@pytest.fixture(params=["float", "object"])
+def dtype(request):
+    return NumpyEADtype(np.dtype(request.param))
+
+
+@pytest.fixture
+def allow_in_pandas(monkeypatch):
+    """
+    A monkeypatch to tells pandas to let us in.
+
+    By default, passing a NumpyExtensionArray to an index / series / frame
+    constructor will unbox that NumpyExtensionArray to an ndarray, and treat
+    it as a non-EA column. We don't want people using EAs without
+    reason.
+
+    The mechanism for this is a check against ABCNumpyExtensionArray
+    in each constructor.
+
+    But, for testing, we need to allow them in pandas. So we patch
+    the _typ of NumpyExtensionArray, so that we evade the ABCNumpyExtensionArray
+    check.
+    """
+    with monkeypatch.context() as m:
+        m.setattr(NumpyExtensionArray, "_typ", "extension")
+        m.setattr(tm.asserters, "assert_attr_equal", _assert_attr_equal)
+        yield
+
+
+@pytest.fixture
+def data(allow_in_pandas, dtype):
+    if dtype.numpy_dtype == "object":
+        return pd.Series([(i,) for i in range(100)]).array
+    return NumpyExtensionArray(np.arange(1, 101, dtype=dtype._dtype))
+
+
+@pytest.fixture
+def data_missing(allow_in_pandas, dtype):
+    if dtype.numpy_dtype == "object":
+        return NumpyExtensionArray(np.array([np.nan, (1,)], dtype=object))
+    return NumpyExtensionArray(np.array([np.nan, 1.0]))
+
+
+@pytest.fixture
+def na_cmp():
+    def cmp(a, b):
+        return np.isnan(a) and np.isnan(b)
+
+    return cmp
+
+
+@pytest.fixture
+def data_for_sorting(allow_in_pandas, dtype):
+    """Length-3 array with a known sort order.
+
+    This should be three items [B, C, A] with
+    A < B < C
+    """
+    if dtype.numpy_dtype == "object":
+        # Use an empty tuple for first element, then remove,
+        # to disable np.array's shape inference.
+        return NumpyExtensionArray(np.array([(), (2,), (3,), (1,)], dtype=object)[1:])
+    return NumpyExtensionArray(np.array([1, 2, 0]))
+
+
+@pytest.fixture
+def data_missing_for_sorting(allow_in_pandas, dtype):
+    """Length-3 array with a known sort order.
+
+    This should be three items [B, NA, A] with
+    A < B and NA missing.
+    """
+    if dtype.numpy_dtype == "object":
+        return NumpyExtensionArray(np.array([(1,), np.nan, (0,)], dtype=object))
+    return NumpyExtensionArray(np.array([1, np.nan, 0]))
+
+
+@pytest.fixture
+def data_for_grouping(allow_in_pandas, dtype):
+    """Data for factorization, grouping, and unique tests.
+
+    Expected to be like [B, B, NA, NA, A, A, B, C]
+
+    Where A < B < C and NA is missing
+    """
+    if dtype.numpy_dtype == "object":
+        a, b, c = (1,), (2,), (3,)
+    else:
+        a, b, c = np.arange(3)
+    return NumpyExtensionArray(
+        np.array([b, b, np.nan, np.nan, a, a, b, c], dtype=dtype.numpy_dtype)
+    )
+
+
+@pytest.fixture
+def data_for_twos(dtype):
+    if dtype.kind == "O":
+        pytest.skip(f"{dtype} is not a numeric dtype")
+    arr = np.ones(100) * 2
+    return NumpyExtensionArray._from_sequence(arr, dtype=dtype)
+
+
+@pytest.fixture
+def skip_numpy_object(dtype, request):
+    """
+    Tests for NumpyExtensionArray with nested data. Users typically won't create
+    these objects via `pd.array`, but they can show up through `.array`
+    on a Series with nested data. Many of the base tests fail, as they aren't
+    appropriate for nested data.
+
+    This fixture allows these tests to be skipped when used as a usefixtures
+    marker to either an individual test or a test class.
+    """
+    if dtype == "object":
+        mark = pytest.mark.xfail(reason="Fails for object dtype")
+        request.applymarker(mark)
+
+
+skip_nested = pytest.mark.usefixtures("skip_numpy_object")
+
+
+class TestNumpyExtensionArray(base.ExtensionTests):
+    @pytest.mark.skip(reason="We don't register our dtype")
+    # We don't want to register. This test should probably be split in two.
+    def test_from_dtype(self, data):
+        pass
+
+    @skip_nested
+    def test_series_constructor_scalar_with_index(self, data, dtype):
+        # ValueError: Length of passed values is 1, index implies 3.
+        super().test_series_constructor_scalar_with_index(data, dtype)
+
+    def test_check_dtype(self, data, request, using_infer_string):
+        if data.dtype.numpy_dtype == "object":
+            request.applymarker(
+                pytest.mark.xfail(
+                    reason=f"NumpyExtensionArray expectedly clashes with a "
+                    f"NumPy name: {data.dtype.numpy_dtype}"
+                )
+            )
+        super().test_check_dtype(data)
+
+    def test_is_not_object_type(self, dtype, request):
+        if dtype.numpy_dtype == "object":
+            # Different from BaseDtypeTests.test_is_not_object_type
+            # because NumpyEADtype(object) is an object type
+            assert is_object_dtype(dtype)
+        else:
+            super().test_is_not_object_type(dtype)
+
+    @skip_nested
+    def test_getitem_scalar(self, data):
+        # AssertionError
+        super().test_getitem_scalar(data)
+
+    @skip_nested
+    def test_shift_fill_value(self, data):
+        # np.array shape inference. Shift implementation fails.
+        super().test_shift_fill_value(data)
+
+    @skip_nested
+    def test_fillna_copy_frame(self, data_missing):
+        # The "scalar" for this array isn't a scalar.
+        super().test_fillna_copy_frame(data_missing)
+
+    @skip_nested
+    def test_fillna_copy_series(self, data_missing):
+        # The "scalar" for this array isn't a scalar.
+        super().test_fillna_copy_series(data_missing)
+
+    @skip_nested
+    def test_searchsorted(self, data_for_sorting, as_series):
+        # TODO: NumpyExtensionArray.searchsorted calls ndarray.searchsorted which
+        #  isn't quite what we want in nested data cases. Instead we need to
+        #  adapt something like libindex._bin_search.
+        super().test_searchsorted(data_for_sorting, as_series)
+
+    @pytest.mark.xfail(reason="NumpyExtensionArray.diff may fail on dtype")
+    def test_diff(self, data, periods):
+        return super().test_diff(data, periods)
+
+    def test_insert(self, data, request):
+        if data.dtype.numpy_dtype == object:
+            mark = pytest.mark.xfail(reason="Dimension mismatch in np.concatenate")
+            request.applymarker(mark)
+
+        super().test_insert(data)
+
+    @skip_nested
+    def test_insert_invalid(self, data, invalid_scalar):
+        # NumpyExtensionArray[object] can hold anything, so skip
+        super().test_insert_invalid(data, invalid_scalar)
+
+    divmod_exc = None
+    series_scalar_exc = None
+    frame_scalar_exc = None
+    series_array_exc = None
+
+    def test_divmod(self, data):
+        divmod_exc = None
+        if data.dtype.kind == "O":
+            divmod_exc = TypeError
+        self.divmod_exc = divmod_exc
+        super().test_divmod(data)
+
+    def test_divmod_series_array(self, data):
+        ser = pd.Series(data)
+        exc = None
+        if data.dtype.kind == "O":
+            exc = TypeError
+            self.divmod_exc = exc
+        self._check_divmod_op(ser, divmod, data)
+
+    def test_arith_series_with_scalar(self, data, all_arithmetic_operators, request):
+        opname = all_arithmetic_operators
+        series_scalar_exc = None
+        if data.dtype.numpy_dtype == object:
+            if opname in ["__mul__", "__rmul__"]:
+                mark = pytest.mark.xfail(
+                    reason="the Series.combine step raises but not the Series method."
+                )
+                request.node.add_marker(mark)
+            series_scalar_exc = TypeError
+        self.series_scalar_exc = series_scalar_exc
+        super().test_arith_series_with_scalar(data, all_arithmetic_operators)
+
+    def test_arith_series_with_array(self, data, all_arithmetic_operators):
+        opname = all_arithmetic_operators
+        series_array_exc = None
+        if data.dtype.numpy_dtype == object and opname not in ["__add__", "__radd__"]:
+            series_array_exc = TypeError
+        self.series_array_exc = series_array_exc
+        super().test_arith_series_with_array(data, all_arithmetic_operators)
+
+    def test_arith_frame_with_scalar(self, data, all_arithmetic_operators, request):
+        opname = all_arithmetic_operators
+        frame_scalar_exc = None
+        if data.dtype.numpy_dtype == object:
+            if opname in ["__mul__", "__rmul__"]:
+                mark = pytest.mark.xfail(
+                    reason="the Series.combine step raises but not the Series method."
+                )
+                request.node.add_marker(mark)
+            frame_scalar_exc = TypeError
+        self.frame_scalar_exc = frame_scalar_exc
+        super().test_arith_frame_with_scalar(data, all_arithmetic_operators)
+
+    def _supports_reduction(self, ser: pd.Series, op_name: str) -> bool:
+        if ser.dtype.kind == "O":
+            return op_name in ["sum", "min", "max", "any", "all"]
+        return True
+
+    def check_reduce(self, ser: pd.Series, op_name: str, skipna: bool):
+        res_op = getattr(ser, op_name)
+        # avoid coercing int -> float. Just cast to the actual numpy type.
+        # error: Item "ExtensionDtype" of "dtype[Any] | ExtensionDtype" has
+        # no attribute "numpy_dtype"
+        cmp_dtype = ser.dtype.numpy_dtype  # type: ignore[union-attr]
+        alt = ser.astype(cmp_dtype)
+        exp_op = getattr(alt, op_name)
+        if op_name == "count":
+            result = res_op()
+            expected = exp_op()
+        else:
+            result = res_op(skipna=skipna)
+            expected = exp_op(skipna=skipna)
+        tm.assert_almost_equal(result, expected)
+
+    @pytest.mark.skip("TODO: tests not written yet")
+    @pytest.mark.parametrize("skipna", [True, False])
+    def test_reduce_frame(self, data, all_numeric_reductions, skipna):
+        pass
+
+    @skip_nested
+    def test_fillna_series(self, data_missing):
+        # Non-scalar "scalar" values.
+        super().test_fillna_series(data_missing)
+
+    @skip_nested
+    def test_fillna_frame(self, data_missing):
+        # Non-scalar "scalar" values.
+        super().test_fillna_frame(data_missing)
+
+    @skip_nested
+    def test_setitem_invalid(self, data, invalid_scalar):
+        # object dtype can hold anything, so doesn't raise
+        super().test_setitem_invalid(data, invalid_scalar)
+
+    @skip_nested
+    def test_setitem_sequence_broadcasts(self, data, box_in_series):
+        # ValueError: cannot set using a list-like indexer with a different
+        # length than the value
+        super().test_setitem_sequence_broadcasts(data, box_in_series)
+
+    @skip_nested
+    @pytest.mark.parametrize("setter", ["loc", None])
+    def test_setitem_mask_broadcast(self, data, setter):
+        # ValueError: cannot set using a list-like indexer with a different
+        # length than the value
+        super().test_setitem_mask_broadcast(data, setter)
+
+    @skip_nested
+    def test_setitem_scalar_key_sequence_raise(self, data):
+        # Failed: DID NOT RAISE <class 'ValueError'>
+        super().test_setitem_scalar_key_sequence_raise(data)
+
+    # TODO: there is some issue with NumpyExtensionArray, therefore,
+    #   skip the setitem test for now, and fix it later (GH 31446)
+
+    @skip_nested
+    @pytest.mark.parametrize(
+        "mask",
+        [
+            np.array([True, True, True, False, False]),
+            pd.array([True, True, True, False, False], dtype="boolean"),
+        ],
+        ids=["numpy-array", "boolean-array"],
+    )
+    def test_setitem_mask(self, data, mask, box_in_series):
+        super().test_setitem_mask(data, mask, box_in_series)
+
+    @skip_nested
+    @pytest.mark.parametrize(
+        "idx",
+        [[0, 1, 2], pd.array([0, 1, 2], dtype="Int64"), np.array([0, 1, 2])],
+        ids=["list", "integer-array", "numpy-array"],
+    )
+    def test_setitem_integer_array(self, data, idx, box_in_series):
+        super().test_setitem_integer_array(data, idx, box_in_series)
+
+    @pytest.mark.parametrize(
+        "idx, box_in_series",
+        [
+            ([0, 1, 2, pd.NA], False),
+            pytest.param([0, 1, 2, pd.NA], True, marks=pytest.mark.xfail),
+            (pd.array([0, 1, 2, pd.NA], dtype="Int64"), False),
+            (pd.array([0, 1, 2, pd.NA], dtype="Int64"), False),
+        ],
+        ids=["list-False", "list-True", "integer-array-False", "integer-array-True"],
+    )
+    def test_setitem_integer_with_missing_raises(self, data, idx, box_in_series):
+        super().test_setitem_integer_with_missing_raises(data, idx, box_in_series)
+
+    @skip_nested
+    def test_setitem_slice(self, data, box_in_series):
+        super().test_setitem_slice(data, box_in_series)
+
+    @skip_nested
+    def test_setitem_loc_iloc_slice(self, data):
+        super().test_setitem_loc_iloc_slice(data)
+
+    def test_setitem_with_expansion_dataframe_column(self, data, full_indexer):
+        # https://github.com/pandas-dev/pandas/issues/32395
+        df = expected = pd.DataFrame({"data": pd.Series(data)})
+        result = pd.DataFrame(index=df.index)
+
+        # because result has object dtype, the attempt to do setting inplace
+        #  is successful, and object dtype is retained
+        key = full_indexer(df)
+        result.loc[key, "data"] = df["data"]
+
+        # base class method has expected = df; NumpyExtensionArray behaves oddly because
+        #  we patch _typ for these tests.
+        if data.dtype.numpy_dtype != object:
+            if not isinstance(key, slice) or key != slice(None):
+                expected = pd.DataFrame({"data": data.to_numpy()})
+        tm.assert_frame_equal(result, expected, check_column_type=False)
+
+    @pytest.mark.xfail(reason="NumpyEADtype is unpacked")
+    def test_index_from_listlike_with_dtype(self, data):
+        super().test_index_from_listlike_with_dtype(data)
+
+    @skip_nested
+    @pytest.mark.parametrize("engine", ["c", "python"])
+    def test_EA_types(self, engine, data, request):
+        super().test_EA_types(engine, data, request)
+
+
+class Test2DCompat(base.NDArrayBacked2DTests):
+    pass

env-llmeval/lib/python3.10/site-packages/pandas/tests/extension/test_period.py

@@ -0,0 +1,119 @@
+"""
+This file contains a minimal set of tests for compliance with the extension
+array interface test suite, and should contain no other tests.
+The test suite for the full functionality of the array is located in
+`pandas/tests/arrays/`.
+
+The tests in this file are inherited from the BaseExtensionTests, and only
+minimal tweaks should be applied to get the tests passing (by overwriting a
+parent method).
+
+Additional tests should either be added to one of the BaseExtensionTests
+classes (if they are relevant for the extension interface for all dtypes), or
+be added to the array-specific tests in `pandas/tests/arrays/`.
+
+"""
+from __future__ import annotations
+
+from typing import TYPE_CHECKING
+
+import numpy as np
+import pytest
+
+from pandas._libs import (
+    Period,
+    iNaT,
+)
+from pandas.compat import is_platform_windows
+from pandas.compat.numpy import np_version_gte1p24
+
+from pandas.core.dtypes.dtypes import PeriodDtype
+
+import pandas._testing as tm
+from pandas.core.arrays import PeriodArray
+from pandas.tests.extension import base
+
+if TYPE_CHECKING:
+    import pandas as pd
+
+
+@pytest.fixture(params=["D", "2D"])
+def dtype(request):
+    return PeriodDtype(freq=request.param)
+
+
+@pytest.fixture
+def data(dtype):
+    return PeriodArray(np.arange(1970, 2070), dtype=dtype)
+
+
+@pytest.fixture
+def data_for_sorting(dtype):
+    return PeriodArray([2018, 2019, 2017], dtype=dtype)
+
+
+@pytest.fixture
+def data_missing(dtype):
+    return PeriodArray([iNaT, 2017], dtype=dtype)
+
+
+@pytest.fixture
+def data_missing_for_sorting(dtype):
+    return PeriodArray([2018, iNaT, 2017], dtype=dtype)
+
+
+@pytest.fixture
+def data_for_grouping(dtype):
+    B = 2018
+    NA = iNaT
+    A = 2017
+    C = 2019
+    return PeriodArray([B, B, NA, NA, A, A, B, C], dtype=dtype)
+
+
+class TestPeriodArray(base.ExtensionTests):
+    def _get_expected_exception(self, op_name, obj, other):
+        if op_name in ("__sub__", "__rsub__"):
+            return None
+        return super()._get_expected_exception(op_name, obj, other)
+
+    def _supports_accumulation(self, ser, op_name: str) -> bool:
+        return op_name in ["cummin", "cummax"]
+
+    def _supports_reduction(self, obj, op_name: str) -> bool:
+        return op_name in ["min", "max", "median"]
+
+    def check_reduce(self, ser: pd.Series, op_name: str, skipna: bool):
+        if op_name == "median":
+            res_op = getattr(ser, op_name)
+
+            alt = ser.astype("int64")
+
+            exp_op = getattr(alt, op_name)
+            result = res_op(skipna=skipna)
+            expected = exp_op(skipna=skipna)
+            # error: Item "dtype[Any]" of "dtype[Any] | ExtensionDtype" has no
+            # attribute "freq"
+            freq = ser.dtype.freq  # type: ignore[union-attr]
+            expected = Period._from_ordinal(int(expected), freq=freq)
+            tm.assert_almost_equal(result, expected)
+
+        else:
+            return super().check_reduce(ser, op_name, skipna)
+
+    @pytest.mark.parametrize("periods", [1, -2])
+    def test_diff(self, data, periods):
+        if is_platform_windows() and np_version_gte1p24:
+            with tm.assert_produces_warning(RuntimeWarning, check_stacklevel=False):
+                super().test_diff(data, periods)
+        else:
+            super().test_diff(data, periods)
+
+    @pytest.mark.parametrize("na_action", [None, "ignore"])
+    def test_map(self, data, na_action):
+        result = data.map(lambda x: x, na_action=na_action)
+        tm.assert_extension_array_equal(result, data)
+
+
+class Test2DCompat(base.NDArrayBacked2DTests):
+    pass

env-llmeval/lib/python3.10/site-packages/pandas/tests/extension/test_sparse.py

@@ -0,0 +1,498 @@
+"""
+This file contains a minimal set of tests for compliance with the extension
+array interface test suite, and should contain no other tests.
+The test suite for the full functionality of the array is located in
+`pandas/tests/arrays/`.
+
+The tests in this file are inherited from the BaseExtensionTests, and only
+minimal tweaks should be applied to get the tests passing (by overwriting a
+parent method).
+
+Additional tests should either be added to one of the BaseExtensionTests
+classes (if they are relevant for the extension interface for all dtypes), or
+be added to the array-specific tests in `pandas/tests/arrays/`.
+
+"""
+
+import numpy as np
+import pytest
+
+from pandas.errors import PerformanceWarning
+
+import pandas as pd
+from pandas import SparseDtype
+import pandas._testing as tm
+from pandas.arrays import SparseArray
+from pandas.tests.extension import base
+
+
+def make_data(fill_value):
+    rng = np.random.default_rng(2)
+    if np.isnan(fill_value):
+        data = rng.uniform(size=100)
+    else:
+        data = rng.integers(1, 100, size=100, dtype=int)
+        if data[0] == data[1]:
+            data[0] += 1
+
+    data[2::3] = fill_value
+    return data
+
+
+@pytest.fixture
+def dtype():
+    return SparseDtype()
+
+
+@pytest.fixture(params=[0, np.nan])
+def data(request):
+    """Length-100 PeriodArray for semantics test."""
+    res = SparseArray(make_data(request.param), fill_value=request.param)
+    return res
+
+
+@pytest.fixture
+def data_for_twos():
+    return SparseArray(np.ones(100) * 2)
+
+
+@pytest.fixture(params=[0, np.nan])
+def data_missing(request):
+    """Length 2 array with [NA, Valid]"""
+    return SparseArray([np.nan, 1], fill_value=request.param)
+
+
+@pytest.fixture(params=[0, np.nan])
+def data_repeated(request):
+    """Return different versions of data for count times"""
+
+    def gen(count):
+        for _ in range(count):
+            yield SparseArray(make_data(request.param), fill_value=request.param)
+
+    yield gen
+
+
+@pytest.fixture(params=[0, np.nan])
+def data_for_sorting(request):
+    return SparseArray([2, 3, 1], fill_value=request.param)
+
+
+@pytest.fixture(params=[0, np.nan])
+def data_missing_for_sorting(request):
+    return SparseArray([2, np.nan, 1], fill_value=request.param)
+
+
+@pytest.fixture
+def na_cmp():
+    return lambda left, right: pd.isna(left) and pd.isna(right)
+
+
+@pytest.fixture(params=[0, np.nan])
+def data_for_grouping(request):
+    return SparseArray([1, 1, np.nan, np.nan, 2, 2, 1, 3], fill_value=request.param)
+
+
+@pytest.fixture(params=[0, np.nan])
+def data_for_compare(request):
+    return SparseArray([0, 0, np.nan, -2, -1, 4, 2, 3, 0, 0], fill_value=request.param)
+
+
+class TestSparseArray(base.ExtensionTests):
+    def _supports_reduction(self, obj, op_name: str) -> bool:
+        return True
+
+    @pytest.mark.parametrize("skipna", [True, False])
+    def test_reduce_series_numeric(self, data, all_numeric_reductions, skipna, request):
+        if all_numeric_reductions in [
+            "prod",
+            "median",
+            "var",
+            "std",
+            "sem",
+            "skew",
+            "kurt",
+        ]:
+            mark = pytest.mark.xfail(
+                reason="This should be viable but is not implemented"
+            )
+            request.node.add_marker(mark)
+        elif (
+            all_numeric_reductions in ["sum", "max", "min", "mean"]
+            and data.dtype.kind == "f"
+            and not skipna
+        ):
+            mark = pytest.mark.xfail(reason="getting a non-nan float")
+            request.node.add_marker(mark)
+
+        super().test_reduce_series_numeric(data, all_numeric_reductions, skipna)
+
+    @pytest.mark.parametrize("skipna", [True, False])
+    def test_reduce_frame(self, data, all_numeric_reductions, skipna, request):
+        if all_numeric_reductions in [
+            "prod",
+            "median",
+            "var",
+            "std",
+            "sem",
+            "skew",
+            "kurt",
+        ]:
+            mark = pytest.mark.xfail(
+                reason="This should be viable but is not implemented"
+            )
+            request.node.add_marker(mark)
+        elif (
+            all_numeric_reductions in ["sum", "max", "min", "mean"]
+            and data.dtype.kind == "f"
+            and not skipna
+        ):
+            mark = pytest.mark.xfail(reason="ExtensionArray NA mask are different")
+            request.node.add_marker(mark)
+
+        super().test_reduce_frame(data, all_numeric_reductions, skipna)
+
+    def _check_unsupported(self, data):
+        if data.dtype == SparseDtype(int, 0):
+            pytest.skip("Can't store nan in int array.")
+
+    def test_concat_mixed_dtypes(self, data):
+        # https://github.com/pandas-dev/pandas/issues/20762
+        # This should be the same, aside from concat([sparse, float])
+        df1 = pd.DataFrame({"A": data[:3]})
+        df2 = pd.DataFrame({"A": [1, 2, 3]})
+        df3 = pd.DataFrame({"A": ["a", "b", "c"]}).astype("category")
+        dfs = [df1, df2, df3]
+
+        # dataframes
+        result = pd.concat(dfs)
+        expected = pd.concat(
+            [x.apply(lambda s: np.asarray(s).astype(object)) for x in dfs]
+        )
+        tm.assert_frame_equal(result, expected)
+
+    @pytest.mark.filterwarnings(
+        "ignore:The previous implementation of stack is deprecated"
+    )
+    @pytest.mark.parametrize(
+        "columns",
+        [
+            ["A", "B"],
+            pd.MultiIndex.from_tuples(
+                [("A", "a"), ("A", "b")], names=["outer", "inner"]
+            ),
+        ],
+    )
+    @pytest.mark.parametrize("future_stack", [True, False])
+    def test_stack(self, data, columns, future_stack):
+        super().test_stack(data, columns, future_stack)
+
+    def test_concat_columns(self, data, na_value):
+        self._check_unsupported(data)
+        super().test_concat_columns(data, na_value)
+
+    def test_concat_extension_arrays_copy_false(self, data, na_value):
+        self._check_unsupported(data)
+        super().test_concat_extension_arrays_copy_false(data, na_value)
+
+    def test_align(self, data, na_value):
+        self._check_unsupported(data)
+        super().test_align(data, na_value)
+
+    def test_align_frame(self, data, na_value):
+        self._check_unsupported(data)
+        super().test_align_frame(data, na_value)
+
+    def test_align_series_frame(self, data, na_value):
+        self._check_unsupported(data)
+        super().test_align_series_frame(data, na_value)
+
+    def test_merge(self, data, na_value):
+        self._check_unsupported(data)
+        super().test_merge(data, na_value)
+
+    def test_get(self, data):
+        ser = pd.Series(data, index=[2 * i for i in range(len(data))])
+        if np.isnan(ser.values.fill_value):
+            assert np.isnan(ser.get(4)) and np.isnan(ser.iloc[2])
+        else:
+            assert ser.get(4) == ser.iloc[2]
+        assert ser.get(2) == ser.iloc[1]
+
+    def test_reindex(self, data, na_value):
+        self._check_unsupported(data)
+        super().test_reindex(data, na_value)
+
+    def test_isna(self, data_missing):
+        sarr = SparseArray(data_missing)
+        expected_dtype = SparseDtype(bool, pd.isna(data_missing.dtype.fill_value))
+        expected = SparseArray([True, False], dtype=expected_dtype)
+        result = sarr.isna()
+        tm.assert_sp_array_equal(result, expected)
+
+        # test isna for arr without na
+        sarr = sarr.fillna(0)
+        expected_dtype = SparseDtype(bool, pd.isna(data_missing.dtype.fill_value))
+        expected = SparseArray([False, False], fill_value=False, dtype=expected_dtype)
+        tm.assert_equal(sarr.isna(), expected)
+
+    def test_fillna_limit_backfill(self, data_missing):
+        warns = (PerformanceWarning, FutureWarning)
+        with tm.assert_produces_warning(warns, check_stacklevel=False):
+            super().test_fillna_limit_backfill(data_missing)
+
+    def test_fillna_no_op_returns_copy(self, data, request):
+        if np.isnan(data.fill_value):
+            request.applymarker(
+                pytest.mark.xfail(reason="returns array with different fill value")
+            )
+        super().test_fillna_no_op_returns_copy(data)
+
+    @pytest.mark.xfail(reason="Unsupported")
+    def test_fillna_series(self, data_missing):
+        # this one looks doable.
+        # TODO: this fails bc we do not pass through data_missing. If we did,
+        #  the 0-fill case would xpass
+        super().test_fillna_series()
+
+    def test_fillna_frame(self, data_missing):
+        # Have to override to specify that fill_value will change.
+        fill_value = data_missing[1]
+
+        result = pd.DataFrame({"A": data_missing, "B": [1, 2]}).fillna(fill_value)
+
+        if pd.isna(data_missing.fill_value):
+            dtype = SparseDtype(data_missing.dtype, fill_value)
+        else:
+            dtype = data_missing.dtype
+
+        expected = pd.DataFrame(
+            {
+                "A": data_missing._from_sequence([fill_value, fill_value], dtype=dtype),
+                "B": [1, 2],
+            }
+        )
+
+        tm.assert_frame_equal(result, expected)
+
+    _combine_le_expected_dtype = "Sparse[bool]"
+
+    def test_fillna_copy_frame(self, data_missing, using_copy_on_write):
+        arr = data_missing.take([1, 1])
+        df = pd.DataFrame({"A": arr}, copy=False)
+
+        filled_val = df.iloc[0, 0]
+        result = df.fillna(filled_val)
+
+        if hasattr(df._mgr, "blocks"):
+            if using_copy_on_write:
+                assert df.values.base is result.values.base
+            else:
+                assert df.values.base is not result.values.base
+        assert df.A._values.to_dense() is arr.to_dense()
+
+    def test_fillna_copy_series(self, data_missing, using_copy_on_write):
+        arr = data_missing.take([1, 1])
+        ser = pd.Series(arr, copy=False)
+
+        filled_val = ser[0]
+        result = ser.fillna(filled_val)
+
+        if using_copy_on_write:
+            assert ser._values is result._values
+
+        else:
+            assert ser._values is not result._values
+        assert ser._values.to_dense() is arr.to_dense()
+
+    @pytest.mark.xfail(reason="Not Applicable")
+    def test_fillna_length_mismatch(self, data_missing):
+        super().test_fillna_length_mismatch(data_missing)
+
+    def test_where_series(self, data, na_value):
+        assert data[0] != data[1]
+        cls = type(data)
+        a, b = data[:2]
+
+        ser = pd.Series(cls._from_sequence([a, a, b, b], dtype=data.dtype))
+
+        cond = np.array([True, True, False, False])
+        result = ser.where(cond)
+
+        new_dtype = SparseDtype("float", 0.0)
+        expected = pd.Series(
+            cls._from_sequence([a, a, na_value, na_value], dtype=new_dtype)
+        )
+        tm.assert_series_equal(result, expected)
+
+        other = cls._from_sequence([a, b, a, b], dtype=data.dtype)
+        cond = np.array([True, False, True, True])
+        result = ser.where(cond, other)
+        expected = pd.Series(cls._from_sequence([a, b, b, b], dtype=data.dtype))
+        tm.assert_series_equal(result, expected)
+
+    def test_searchsorted(self, data_for_sorting, as_series):
+        with tm.assert_produces_warning(PerformanceWarning, check_stacklevel=False):
+            super().test_searchsorted(data_for_sorting, as_series)
+
+    def test_shift_0_periods(self, data):
+        # GH#33856 shifting with periods=0 should return a copy, not same obj
+        result = data.shift(0)
+
+        data._sparse_values[0] = data._sparse_values[1]
+        assert result._sparse_values[0] != result._sparse_values[1]
+
+    @pytest.mark.parametrize("method", ["argmax", "argmin"])
+    def test_argmin_argmax_all_na(self, method, data, na_value):
+        # overriding because Sparse[int64, 0] cannot handle na_value
+        self._check_unsupported(data)
+        super().test_argmin_argmax_all_na(method, data, na_value)
+
+    @pytest.mark.parametrize("box", [pd.array, pd.Series, pd.DataFrame])
+    def test_equals(self, data, na_value, as_series, box):
+        self._check_unsupported(data)
+        super().test_equals(data, na_value, as_series, box)
+
+    @pytest.mark.parametrize(
+        "func, na_action, expected",
+        [
+            (lambda x: x, None, SparseArray([1.0, np.nan])),
+            (lambda x: x, "ignore", SparseArray([1.0, np.nan])),
+            (str, None, SparseArray(["1.0", "nan"], fill_value="nan")),
+            (str, "ignore", SparseArray(["1.0", np.nan])),
+        ],
+    )
+    def test_map(self, func, na_action, expected):
+        # GH52096
+        data = SparseArray([1, np.nan])
+        result = data.map(func, na_action=na_action)
+        tm.assert_extension_array_equal(result, expected)
+
+    @pytest.mark.parametrize("na_action", [None, "ignore"])
+    def test_map_raises(self, data, na_action):
+        # GH52096
+        msg = "fill value in the sparse values not supported"
+        with pytest.raises(ValueError, match=msg):
+            data.map(lambda x: np.nan, na_action=na_action)
+
+    @pytest.mark.xfail(raises=TypeError, reason="no sparse StringDtype")
+    def test_astype_string(self, data, nullable_string_dtype):
+        # TODO: this fails bc we do not pass through nullable_string_dtype;
+        #  If we did, the 0-cases would xpass
+        super().test_astype_string(data)
+
+    series_scalar_exc = None
+    frame_scalar_exc = None
+    divmod_exc = None
+    series_array_exc = None
+
+    def _skip_if_different_combine(self, data):
+        if data.fill_value == 0:
+            # arith ops call on dtype.fill_value so that the sparsity
+            # is maintained. Combine can't be called on a dtype in
+            # general, so we can't make the expected. This is tested elsewhere
+            pytest.skip("Incorrected expected from Series.combine and tested elsewhere")
+
+    def test_arith_series_with_scalar(self, data, all_arithmetic_operators):
+        self._skip_if_different_combine(data)
+        super().test_arith_series_with_scalar(data, all_arithmetic_operators)
+
+    def test_arith_series_with_array(self, data, all_arithmetic_operators):
+        self._skip_if_different_combine(data)
+        super().test_arith_series_with_array(data, all_arithmetic_operators)
+
+    def test_arith_frame_with_scalar(self, data, all_arithmetic_operators, request):
+        if data.dtype.fill_value != 0:
+            pass
+        elif all_arithmetic_operators.strip("_") not in [
+            "mul",
+            "rmul",
+            "floordiv",
+            "rfloordiv",
+            "pow",
+            "mod",
+            "rmod",
+        ]:
+            mark = pytest.mark.xfail(reason="result dtype.fill_value mismatch")
+            request.applymarker(mark)
+        super().test_arith_frame_with_scalar(data, all_arithmetic_operators)
+
+    def _compare_other(
+        self, ser: pd.Series, data_for_compare: SparseArray, comparison_op, other
+    ):
+        op = comparison_op
+
+        result = op(data_for_compare, other)
+        if isinstance(other, pd.Series):
+            assert isinstance(result, pd.Series)
+            assert isinstance(result.dtype, SparseDtype)
+        else:
+            assert isinstance(result, SparseArray)
+        assert result.dtype.subtype == np.bool_
+
+        if isinstance(other, pd.Series):
+            fill_value = op(data_for_compare.fill_value, other._values.fill_value)
+            expected = SparseArray(
+                op(data_for_compare.to_dense(), np.asarray(other)),
+                fill_value=fill_value,
+                dtype=np.bool_,
+            )
+
+        else:
+            fill_value = np.all(
+                op(np.asarray(data_for_compare.fill_value), np.asarray(other))
+            )
+
+            expected = SparseArray(
+                op(data_for_compare.to_dense(), np.asarray(other)),
+                fill_value=fill_value,
+                dtype=np.bool_,
+            )
+        if isinstance(other, pd.Series):
+            # error: Incompatible types in assignment
+            expected = pd.Series(expected)  # type: ignore[assignment]
+        tm.assert_equal(result, expected)
+
+    def test_scalar(self, data_for_compare: SparseArray, comparison_op):
+        ser = pd.Series(data_for_compare)
+        self._compare_other(ser, data_for_compare, comparison_op, 0)
+        self._compare_other(ser, data_for_compare, comparison_op, 1)
+        self._compare_other(ser, data_for_compare, comparison_op, -1)
+        self._compare_other(ser, data_for_compare, comparison_op, np.nan)
+
+    def test_array(self, data_for_compare: SparseArray, comparison_op, request):
+        if data_for_compare.dtype.fill_value == 0 and comparison_op.__name__ in [
+            "eq",
+            "ge",
+            "le",
+        ]:
+            mark = pytest.mark.xfail(reason="Wrong fill_value")
+            request.applymarker(mark)
+
+        arr = np.linspace(-4, 5, 10)
+        ser = pd.Series(data_for_compare)
+        self._compare_other(ser, data_for_compare, comparison_op, arr)
+
+    def test_sparse_array(self, data_for_compare: SparseArray, comparison_op, request):
+        if data_for_compare.dtype.fill_value == 0 and comparison_op.__name__ != "gt":
+            mark = pytest.mark.xfail(reason="Wrong fill_value")
+            request.applymarker(mark)
+
+        ser = pd.Series(data_for_compare)
+        arr = data_for_compare + 1
+        self._compare_other(ser, data_for_compare, comparison_op, arr)
+        arr = data_for_compare * 2
+        self._compare_other(ser, data_for_compare, comparison_op, arr)
+
+    @pytest.mark.xfail(reason="Different repr")
+    def test_array_repr(self, data, size):
+        super().test_array_repr(data, size)
+
+    @pytest.mark.xfail(reason="result does not match expected")
+    @pytest.mark.parametrize("as_index", [True, False])
+    def test_groupby_extension_agg(self, as_index, data_for_grouping):
+        super().test_groupby_extension_agg(as_index, data_for_grouping)
+
+
+def test_array_type_with_arg(dtype):
+    assert dtype.construct_array_type() is SparseArray

env-llmeval/lib/python3.10/site-packages/pandas/tests/extension/test_string.py

@@ -0,0 +1,242 @@
+"""
+This file contains a minimal set of tests for compliance with the extension
+array interface test suite, and should contain no other tests.
+The test suite for the full functionality of the array is located in
+`pandas/tests/arrays/`.
+
+The tests in this file are inherited from the BaseExtensionTests, and only
+minimal tweaks should be applied to get the tests passing (by overwriting a
+parent method).
+
+Additional tests should either be added to one of the BaseExtensionTests
+classes (if they are relevant for the extension interface for all dtypes), or
+be added to the array-specific tests in `pandas/tests/arrays/`.
+
+"""
+from __future__ import annotations
+
+import string
+from typing import cast
+
+import numpy as np
+import pytest
+
+import pandas as pd
+import pandas._testing as tm
+from pandas.api.types import is_string_dtype
+from pandas.core.arrays import ArrowStringArray
+from pandas.core.arrays.string_ import StringDtype
+from pandas.tests.extension import base
+
+
+def maybe_split_array(arr, chunked):
+    if not chunked:
+        return arr
+    elif arr.dtype.storage != "pyarrow":
+        return arr
+
+    pa = pytest.importorskip("pyarrow")
+
+    arrow_array = arr._pa_array
+    split = len(arrow_array) // 2
+    arrow_array = pa.chunked_array(
+        [*arrow_array[:split].chunks, *arrow_array[split:].chunks]
+    )
+    assert arrow_array.num_chunks == 2
+    return type(arr)(arrow_array)
+
+
+@pytest.fixture(params=[True, False])
+def chunked(request):
+    return request.param
+
+
+@pytest.fixture
+def dtype(string_storage):
+    return StringDtype(storage=string_storage)
+
+
+@pytest.fixture
+def data(dtype, chunked):
+    strings = np.random.default_rng(2).choice(list(string.ascii_letters), size=100)
+    while strings[0] == strings[1]:
+        strings = np.random.default_rng(2).choice(list(string.ascii_letters), size=100)
+
+    arr = dtype.construct_array_type()._from_sequence(strings, dtype=dtype)
+    return maybe_split_array(arr, chunked)
+
+
+@pytest.fixture
+def data_missing(dtype, chunked):
+    """Length 2 array with [NA, Valid]"""
+    arr = dtype.construct_array_type()._from_sequence([pd.NA, "A"], dtype=dtype)
+    return maybe_split_array(arr, chunked)
+
+
+@pytest.fixture
+def data_for_sorting(dtype, chunked):
+    arr = dtype.construct_array_type()._from_sequence(["B", "C", "A"], dtype=dtype)
+    return maybe_split_array(arr, chunked)
+
+
+@pytest.fixture
+def data_missing_for_sorting(dtype, chunked):
+    arr = dtype.construct_array_type()._from_sequence(["B", pd.NA, "A"], dtype=dtype)
+    return maybe_split_array(arr, chunked)
+
+
+@pytest.fixture
+def data_for_grouping(dtype, chunked):
+    arr = dtype.construct_array_type()._from_sequence(
+        ["B", "B", pd.NA, pd.NA, "A", "A", "B", "C"], dtype=dtype
+    )
+    return maybe_split_array(arr, chunked)
+
+
+class TestStringArray(base.ExtensionTests):
+    def test_eq_with_str(self, dtype):
+        assert dtype == f"string[{dtype.storage}]"
+        super().test_eq_with_str(dtype)
+
+    def test_is_not_string_type(self, dtype):
+        # Different from BaseDtypeTests.test_is_not_string_type
+        # because StringDtype is a string type
+        assert is_string_dtype(dtype)
+
+    def test_view(self, data, request, arrow_string_storage):
+        if data.dtype.storage in arrow_string_storage:
+            pytest.skip(reason="2D support not implemented for ArrowStringArray")
+        super().test_view(data)
+
+    def test_from_dtype(self, data):
+        # base test uses string representation of dtype
+        pass
+
+    def test_transpose(self, data, request, arrow_string_storage):
+        if data.dtype.storage in arrow_string_storage:
+            pytest.skip(reason="2D support not implemented for ArrowStringArray")
+        super().test_transpose(data)
+
+    def test_setitem_preserves_views(self, data, request, arrow_string_storage):
+        if data.dtype.storage in arrow_string_storage:
+            pytest.skip(reason="2D support not implemented for ArrowStringArray")
+        super().test_setitem_preserves_views(data)
+
+    def test_dropna_array(self, data_missing):
+        result = data_missing.dropna()
+        expected = data_missing[[1]]
+        tm.assert_extension_array_equal(result, expected)
+
+    def test_fillna_no_op_returns_copy(self, data):
+        data = data[~data.isna()]
+
+        valid = data[0]
+        result = data.fillna(valid)
+        assert result is not data
+        tm.assert_extension_array_equal(result, data)
+
+        result = data.fillna(method="backfill")
+        assert result is not data
+        tm.assert_extension_array_equal(result, data)
+
+    def _get_expected_exception(
+        self, op_name: str, obj, other
+    ) -> type[Exception] | None:
+        if op_name in ["__divmod__", "__rdivmod__"]:
+            if isinstance(obj, pd.Series) and cast(
+                StringDtype, tm.get_dtype(obj)
+            ).storage in [
+                "pyarrow",
+                "pyarrow_numpy",
+            ]:
+                # TODO: re-raise as TypeError?
+                return NotImplementedError
+            elif isinstance(other, pd.Series) and cast(
+                StringDtype, tm.get_dtype(other)
+            ).storage in [
+                "pyarrow",
+                "pyarrow_numpy",
+            ]:
+                # TODO: re-raise as TypeError?
+                return NotImplementedError
+            return TypeError
+        elif op_name in ["__mod__", "__rmod__", "__pow__", "__rpow__"]:
+            if cast(StringDtype, tm.get_dtype(obj)).storage in [
+                "pyarrow",
+                "pyarrow_numpy",
+            ]:
+                return NotImplementedError
+            return TypeError
+        elif op_name in ["__mul__", "__rmul__"]:
+            # Can only multiply strings by integers
+            return TypeError
+        elif op_name in [
+            "__truediv__",
+            "__rtruediv__",
+            "__floordiv__",
+            "__rfloordiv__",
+            "__sub__",
+            "__rsub__",
+        ]:
+            if cast(StringDtype, tm.get_dtype(obj)).storage in [
+                "pyarrow",
+                "pyarrow_numpy",
+            ]:
+                import pyarrow as pa
+
+                # TODO: better to re-raise as TypeError?
+                return pa.ArrowNotImplementedError
+            return TypeError
+
+        return None
+
+    def _supports_reduction(self, ser: pd.Series, op_name: str) -> bool:
+        return (
+            op_name in ["min", "max"]
+            or ser.dtype.storage == "pyarrow_numpy"  # type: ignore[union-attr]
+            and op_name in ("any", "all")
+        )
+
+    def _cast_pointwise_result(self, op_name: str, obj, other, pointwise_result):
+        dtype = cast(StringDtype, tm.get_dtype(obj))
+        if op_name in ["__add__", "__radd__"]:
+            cast_to = dtype
+        elif dtype.storage == "pyarrow":
+            cast_to = "boolean[pyarrow]"  # type: ignore[assignment]
+        elif dtype.storage == "pyarrow_numpy":
+            cast_to = np.bool_  # type: ignore[assignment]
+        else:
+            cast_to = "boolean"  # type: ignore[assignment]
+        return pointwise_result.astype(cast_to)
+
+    def test_compare_scalar(self, data, comparison_op):
+        ser = pd.Series(data)
+        self._compare_other(ser, data, comparison_op, "abc")
+
+    @pytest.mark.filterwarnings("ignore:Falling back:pandas.errors.PerformanceWarning")
+    def test_groupby_extension_apply(self, data_for_grouping, groupby_apply_op):
+        super().test_groupby_extension_apply(data_for_grouping, groupby_apply_op)
+
+
+class Test2DCompat(base.Dim2CompatTests):
+    @pytest.fixture(autouse=True)
+    def arrow_not_supported(self, data):
+        if isinstance(data, ArrowStringArray):
+            pytest.skip(reason="2D support not implemented for ArrowStringArray")
+
+
+def test_searchsorted_with_na_raises(data_for_sorting, as_series):
+    # GH50447
+    b, c, a = data_for_sorting
+    arr = data_for_sorting.take([2, 0, 1])  # to get [a, b, c]
+    arr[-1] = pd.NA
+
+    if as_series:
+        arr = pd.Series(arr)
+
+    msg = (
+        "searchsorted requires array to be sorted, "
+        "which is impossible with NAs present."
+    )
+    with pytest.raises(ValueError, match=msg):
+        arr.searchsorted(b)