一个简单的带有进度条的下载小工具

# PythonDocs\src\030.py
import sys

import requests
from tqdm import tqdm


def download_package(archive_name, download_url):
    with open(archive_name, "wb") as f:
        response = requests.get(download_url, stream=True)
        content_length = int(response.headers.get("Content-Length"))
        with tqdm(desc="Processing", total=content_length, leave=True) as bar:
            iter_size = 1 << 20
            for chunk in response.iter_content(iter_size):
                f.write(chunk)
                bar.update(iter_size)
        print("download %s successful!" % archive_name)


if __name__ == "__main__":
    args = sys.argv[:]
    if len(args) <= 1:
        print("请使用download_cli 下载链接 [文件名] 下载对应文件")
        raise

    url = args[1]

    if len(args) == 2:
        download_name = url.rsplit("/", 1)[-1]
    else:
        download_name = args[2]

    download_package(download_name, url)

比如下载MySQL，执行效果：