python多线程下载多个文件怎么实现

可以使用Python的threading模块来实现多线程下载多个文件。以下是一个简单的示例代码：

import threading
import requests

def download_file(url, filename):
    response = requests.get(url)
    with open(filename, 'wb') as file:
        file.write(response.content)
    print(f'Downloaded {filename}')

urls = ['https://example.com/file1.txt', 'https://example.com/file2.txt', 'https://example.com/file3.txt']
filenames = ['file1.txt', 'file2.txt', 'file3.txt']

threads = []
for url, filename in zip(urls, filenames):
    thread = threading.Thread(target=download_file, args=(url, filename))
    thread.start()
    threads.append(thread)

for thread in threads:
    thread.join()

print('All files downloaded')

在这个示例中，我们创建了一个download_file函数来下载文件，然后使用threading.Thread创建多个线程来同时下载多个文件。最后，使用thread.join()来等待所有线程下载完成。