python:从torrent文件中提取.bz2压缩文件

import bencode
import bz2

def extract_bz2_from_torrent(torrent_file_path, output_file_path):
    with open(torrent_file_path, 'rb') as torrent_file:
        torrent_data = bencode.bdecode(torrent_file.read())
        file_info = torrent_data['info']
        file_name = file_info['name']
        file_data = file_info['files'][0]['path']

        with open(output_file_path, 'wb') as output_file:
            with open(file_name, 'rb') as compressed_file:
                compressed_data = compressed_file.read()
                decompressed_data = bz2.decompress(compressed_data)
                output_file.write(decompressed_data)

# 使用示例
torrent_file_path = 'example.torrent'
output_file_path = 'output.bz2'
extract_bz2_from_torrent(torrent_file_path, output_file_path)