在python中下载文件时如何制作进度条

pip install requests

import requests
import sys

def download_file(url, save_path):
    # 发起GET请求，stream=True表示以流的方式下载文件
    response = requests.get(url, stream=True)
    # 确定文件的总大小
    total_size = int(response.headers.get('content-length', 0))
    # 设置缓存大小和已下载的文件大小
    chunk_size = 1024
    downloaded_size = 0

    # 打开文件，准备写入下载的数据
    with open(save_path, 'wb') as file:
        for data in response.iter_content(chunk_size=chunk_size):
            # 写入文件
            file.write(data)
            # 更新已下载的文件大小
            downloaded_size += len(data)
            # 计算下载进度，并打印进度条
            progress = round(downloaded_size / total_size * 100, 2)
            sys.stdout.write(f'\r[{"#" * int(progress / 5)}] {progress}%')
            sys.stdout.flush()

    print('\n下载完成！')

# 调用下载函数，传入文件的URL和保存路径
download_file('https://example.com/file.zip', 'path/to/save/file.zip')