Fix delete_revisions import - use fallback cache cleanup method

- delete_revisions may not be available in all huggingface_hub versions
- Add fallback to manual cache directory deletion
- Use shutil.rmtree as alternative when delete_revisions unavailable
- Add helpful manual cleanup instructions

quantize_to_awq_colab.ipynb

@@ -164,12 +164,21 @@
         "    raise\n",
         "\n",
         "from transformers import AutoTokenizer\n",
-        "from huggingface_hub import HfApi, scan_cache_dir, delete_revisions, upload_folder\n",
+        "from huggingface_hub import HfApi, scan_cache_dir, upload_folder\n",
         "import torch\n",
         "import shutil\n",
         "import gc\n",
         "import os\n",
         "\n",
+        "# Try to import delete_revisions (may not be available in all versions)\n",
+        "try:\n",
+        "    from huggingface_hub import delete_revisions\n",
+        "    DELETE_REVISIONS_AVAILABLE = True\n",
+        "except ImportError:\n",
+        "    # delete_revisions might not be available, we'll use alternative method\n",
+        "    DELETE_REVISIONS_AVAILABLE = False\n",
+        "    print(\"Note: delete_revisions not available, will use alternative cache cleanup method\")\n",
+        "\n",
         "def quantize_model_to_awq(\n",
         "    model_name: str,\n",
         "    repo_id: str,\n",
@@ -328,12 +337,33 @@
         "                revisions_to_delete.append(repo)\n",
         "        \n",
         "        if revisions_to_delete:\n",
-        "            delete_revisions(revisions_to_delete)\n",
-        "            print(f\"  ✅ Deleted {len(revisions_to_delete)} cached revision(s) for {repo_id}\")\n",
+        "            if DELETE_REVISIONS_AVAILABLE:\n",
+        "                # Use delete_revisions if available\n",
+        "                delete_revisions(revisions_to_delete)\n",
+        "                print(f\"  ✅ Deleted {len(revisions_to_delete)} cached revision(s) for {repo_id}\")\n",
+        "            else:\n",
+        "                # Alternative: Delete cache directories manually\n",
+        "                deleted_count = 0\n",
+        "                for revision in revisions_to_delete:\n",
+        "                    try:\n",
+        "                        # Get the cache directory path\n",
+        "                        cache_path = revision.snapshot_path if hasattr(revision, 'snapshot_path') else None\n",
+        "                        if cache_path and os.path.exists(cache_path):\n",
+        "                            shutil.rmtree(cache_path)\n",
+        "                            deleted_count += 1\n",
+        "                    except Exception as e:\n",
+        "                        print(f\"    ⚠️ Could not delete {revision.repo_id}: {e}\")\n",
+        "                \n",
+        "                if deleted_count > 0:\n",
+        "                    print(f\"  ✅ Deleted {deleted_count} cached revision(s) for {repo_id}\")\n",
+        "                else:\n",
+        "                    print(f\"  ℹ️ Found {len(revisions_to_delete)} cached revision(s) but couldn't delete them\")\n",
+        "                    print(f\"    Try manually: huggingface-cli scan-cache --dir ~/.cache/huggingface\")\n",
         "        else:\n",
         "            print(f\"  ℹ️ No cached revisions found for {repo_id}\")\n",
         "    except Exception as e:\n",
         "        print(f\"  ⚠️ Cache cleanup warning: {e} (continuing...)\")\n",
+        "        print(f\"    You can manually clean cache with: huggingface-cli scan-cache\")\n",
         "    \n",
         "    # Check disk space after cleanup\n",
         "    free_space_after = check_disk_space()\n",