python 压缩zip包

import os
import zipfile as zip
def do_zip(source_, target_file):
    '''
    zip文件压缩
    :param source_: 原始文件路径
    :param target_file: 目标文件路径
    :return:
    '''
    zip_file = zip.ZipFile(target_file, 'w')
    pre_len = len(os.path.dirname(source_))
    for parent, dirnames, filenames in os.walk(source_):
        for filename in filenames:
            print(f'{filename}')
            path_file = os.path.join(parent, filename)
            arcname = path_file[pre_len:].strip(os.path.sep)
            zip_file.write(path_file, arcname)
    '''
    单文件
    '''
    if os.path.isfile(source_):
        zip_file.write(source_,source_[pre_len:].strip(os.path.sep),)
    zip_file.close()
do_zip("a.txt","test.zip")