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This is particularly useful for managing repositories with file system limitations, such as Git's restriction on the maximum number of files per directory.\n", + "\n", + "#### 🔍 **Purpose**\n", + "\n", + "- **Objective**: Split a collection of file groups into a specified number of parts without exceeding a defined maximum number of files per directory.\n", + "- **Use Case**: Ensuring that no single directory contains more than 10,000 files, thereby adhering to repository constraints and maintaining optimal performance.\n", + "\n", + "#### 🛠️ **Function Signature**\n", + "\n", + "```python\n", + "def split_groups_into_parts(groups, num_parts=3, max_files_per_dir=10000):\n", + " \"\"\"\n", + " Splits groups into specified number of parts without exceeding the maximum number of files per directory.\n", + " Each group is assumed to have multiple files (e.g., PDF and metadata).\n", + " Returns a list of lists, where each sublist contains group keys assigned to that part.\n", + " \"\"\"\n" + ] + }, { "cell_type": "code", - "execution_count": null, + "execution_count": 1, "metadata": {}, - "outputs": [], - "source": [] + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "Moved files 1 to 10000 into 'batch_1'\n", + "Moved files 10001 to 20000 into 'batch_2'\n", + "Moved files 20001 to 30000 into 'batch_3'\n", + "Moved files 30001 to 35382 into 'batch_4'\n" + ] + } + ], + "source": [ + "import os\n", + "import shutil\n", + "from math import ceil\n", + "\n", + "def split_directory(root_dir, max_files=10000, batch_size=1000):\n", + " \"\"\"\n", + " Splits a directory into subdirectories with a maximum number of files each.\n", + "\n", + " :param root_dir: Path to the directory to split.\n", + " :param max_files: Maximum number of files per subdirectory.\n", + " :param batch_size: Number of files to move per subdirectory.\n", + " \"\"\"\n", + " files = [f for f in os.listdir(root_dir) if os.path.isfile(os.path.join(root_dir, f))]\n", + " total_files = len(files)\n", + " total_subdirs = ceil(total_files / max_files)\n", + " \n", + " for i in range(total_subdirs):\n", + " subdir_name = f\"batch_{i+1}\"\n", + " subdir_path = os.path.join(root_dir, subdir_name)\n", + " os.makedirs(subdir_path, exist_ok=True)\n", + " \n", + " start_index = i * max_files\n", + " end_index = start_index + max_files\n", + " batch_files = files[start_index:end_index]\n", + " \n", + " for file in batch_files:\n", + " src_path = os.path.join(root_dir, file)\n", + " dest_path = os.path.join(subdir_path, file)\n", + " shutil.move(src_path, dest_path)\n", + " \n", + " print(f\"Moved files {start_index +1} to {min(end_index, total_files)} into '{subdir_name}'\")\n", + "\n", + "# Usage\n", + "split_directory('./data/TS/', max_files=10000, batch_size=1000)\n" + ] } ], "metadata": {