| # Natural Language Toolkit: Compatibility | |
| # | |
| # Copyright (C) 2001-2023 NLTK Project | |
| # | |
| # URL: <https://www.nltk.org/> | |
| # For license information, see LICENSE.TXT | |
| import os | |
| from functools import wraps | |
| # ======= Compatibility for datasets that care about Python versions ======== | |
| # The following datasets have a /PY3 subdirectory containing | |
| # a full copy of the data which has been re-encoded or repickled. | |
| DATA_UPDATES = [ | |
| ("chunkers", "maxent_ne_chunker"), | |
| ("help", "tagsets"), | |
| ("taggers", "maxent_treebank_pos_tagger"), | |
| ("tokenizers", "punkt"), | |
| ] | |
| _PY3_DATA_UPDATES = [os.path.join(*path_list) for path_list in DATA_UPDATES] | |
| def add_py3_data(path): | |
| for item in _PY3_DATA_UPDATES: | |
| if item in str(path) and "/PY3" not in str(path): | |
| pos = path.index(item) + len(item) | |
| if path[pos : pos + 4] == ".zip": | |
| pos += 4 | |
| path = path[:pos] + "/PY3" + path[pos:] | |
| break | |
| return path | |
| # for use in adding /PY3 to the second (filename) argument | |
| # of the file pointers in data.py | |
| def py3_data(init_func): | |
| def _decorator(*args, **kwargs): | |
| args = (args[0], add_py3_data(args[1])) + args[2:] | |
| return init_func(*args, **kwargs) | |
| return wraps(init_func)(_decorator) | |