如何使用python代码自动下载

import urllib.request

def download_file(url, save_path):
    try:
        # 发起网络请求
        response = urllib.request.urlopen(url)
        
        # 处理服务器响应
        if response.status == 200:
            # 获取文件信息
            file_size = int(response.headers['Content-Length'])
            file_name = url.split('/')[-1]
            
            # 下载文件
            with open(save_path + file_name, 'wb') as file:
                downloaded_size = 0
                chunk_size = 1024 * 1024  # 每次下载的块大小为1MB
                while downloaded_size < file_size:
                    chunk = response.read(chunk_size)
                    file.write(chunk)
                    downloaded_size += len(chunk)
                    print('已下载：{:.2f}%'.format(downloaded_size / file_size * 100))
                    
            print('文件下载完成！')
        else:
            print('连接服务器失败！')
    except Exception as e:
        print('下载过程出现异常：', str(e))

# 调用下载函数
download_file('http://example.com/file.zip', '/path/to/save/')