Add upload functionality for Kaggle kernels and integrate new Gradio interface for kernel uploads

app.py

@@ -1,7 +1,7 @@
 import gradio as gr
-import os, json, pathlib, tempfile, datetime, shutil
+import os, json, pathlib, tempfile, datetime, shutil, io
 from typing import List, Dict, Optional
-
+from contextlib import redirect_stdout, redirect_stderr
 from dotenv import load_dotenv
 load_dotenv()
 
@@ -67,7 +67,7 @@ def search_kernels(query: str, max_results: int = 20) -> List[Dict]:
     
 def download_kernel_notebook(kernel_ref: str) -> str:
     tmp_dir = tempfile.mkdtemp()
-    api.kernels_pull(kernel_ref, path=tmp_dir, quiet=False)
+    api.kernels_pull(kernel_ref, path=tmp_dir, metadata=True, quiet=False)
 
     zip_path = shutil.make_archive(
         base_name=os.path.join(tmp_dir, "kernel"),
@@ -76,6 +76,23 @@ def download_kernel_notebook(kernel_ref: str) -> str:
     )
     return zip_path
 
+def upload_kernel_notebook(kernel_zip: str) -> Dict:
+    tmp_dir = tempfile.mkdtemp()
+    shutil.unpack_archive(kernel_zip, tmp_dir)
+    stdout_buf, stderr_buf = io.StringIO(), io.StringIO()
+    try:
+        with redirect_stderr(stdout_buf), redirect_stderr(stderr_buf):
+            api.kernels_push(folder=tmp_dir)
+        result_text = stdout_buf.getvalue().strip() or "kernel pushed"
+    except Exception as exc:
+        return{
+            "status": "error",
+            "detail": f"{exc}",
+            "stderr": stderr_buf.getvalue().strip(),
+        }
+    finally:
+        shutil.rmtree(tmp_dir, ignore_errors=True)
+
 search_iface = gr.Interface(
     fn=search_datasets,
     inputs=[
@@ -128,9 +145,29 @@ search_kernels_iface = gr.Interface(
     description="Find notebook or script kernels by keyword."
 )
 
+upload_kernel_iface = gr.Interface(
+    fn = upload_kernel_notebook,
+    inputs=gr.File(
+        label="Kernel ZIP",
+        file_types=[".zip"],
+        type="filepath",
+        show_label=True,
+    ),
+    outputs=gr.JSON(label="kaggle response"),
+    title="Push kaggle kernel",
+    description=(
+        "Upload a kernel folder to kaggle\n"
+        "Prepare a ZIP that contains **kernel-metadata.json** and the notebook "
+        "or script files.\n"
+    ),
+)
+
+
 demo = gr.TabbedInterface(
-    [search_iface, list_files_iface, download_dataset_iface, search_kernels_iface, download_kernel_iface],
-    tab_names=["Search Datasets", "Files", "Download dataset", "Search Kernels", "Download kernels"],
+    [search_iface, list_files_iface, download_dataset_iface, 
+     search_kernels_iface, download_kernel_iface, upload_kernel_iface],
+    tab_names=["Search Datasets", "Files", "Download dataset", 
+               "Search Kernels", "Download kernels", "Upload kernel zip"],
 )
 
 def _bootstrap_kaggle_credentials():