如何在zip文件中的文件前面加上一行

import zipfile
import os

def add_line_to_zip_file(zip_file_path, file_name, line):
    # 创建临时文件夹
    temp_folder = 'temp'
    os.makedirs(temp_folder, exist_ok=True)

    # 解压zip文件到临时文件夹
    with zipfile.ZipFile(zip_file_path, 'r') as zip_ref:
        zip_ref.extractall(temp_folder)

    # 修改文件
    file_path = os.path.join(temp_folder, file_name)
    with open(file_path, 'r+') as file:
        content = file.read()
        file.seek(0, 0)
        file.write(line + '\n' + content)

    # 重新打包
    with zipfile.ZipFile('modified.zip', 'w') as zip_ref:
        for root, dirs, files in os.walk(temp_folder):
            for file in files:
                file_path = os.path.join(root, file)
                zip_ref.write(file_path, os.path.relpath(file_path, temp_folder))

    # 删除临时文件夹
    os.remove('modified.zip')
    os.removedirs(temp_folder)

# 示例用法
zip_file_path = 'example.zip'
file_name = 'example.txt'
line_to_add = 'This line is added at the beginning.'

add_line_to_zip_file(zip_file_path, file_name, line_to_add)