Python 多线程

最新推荐文章于 2024-08-23 10:28:28 发布

原创最新推荐文章于 2024-08-23 10:28:28 发布 · 743 阅读

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本文介绍如何利用Python的多线程特性，通过创建后台线程异步执行压缩任务，确保主程序流畅运行。具体展示了通过定义自定义线程类`AsyncZip`来实现文件异步压缩，并在主线程中处理后续逻辑。

多线程通常是新开一个后台线程去处理比较耗时的操作，Python做后台线程处理也是很简单的，今天从官方文档中找到了一个Demo.

import threading, zipfile

class AsyncZip(threading.Thread):
    def __init__(self, infile, outfile):
        threading.Thread.__init__(self)
        self.infile = infile
        self.outfile = outfile
    def run(self):
        f = zipfile.ZipFile(self.outfile, 'w', zipfile.ZIP_DEFLATED)
        f.write(self.infile)
        f.close()
        print('Finished background zip of:', self.infile)

background = AsyncZip('mydata.txt', 'myarchive.zip')
background.start()
print('The main program continues to run in foreground.')

background.join()    # Wait for the background task to finish
print('Main program waited until background was done.')

结果:

The main program continues to run in foreground.
Finished background zip of: mydata.txt
Main program waited until background was done.
Press any key to continue . . .