python如何实现程序后台运行
时间: 2024-04-29 11:26:11
浏览: 129
你可以使用Python的multiprocessing模块中的Process类来实现后台运行程序。具体步骤是开启一个新的进程来运行程序,并在主程序退出时自动结束该进程。以下是一段示例[代码](https://geek.csdn.net/educolumn/1572ef9b473b4e00f6b2bf6d428b7c27?spm=1055.2569.3001.10083):
```Python
import multiprocessing
def task():
# 要在后台执行的程序[代码](https://geek.csdn.net/educolumn/1572ef9b473b4e00f6b2bf6d428b7c27?spm=1055.2569.3001.10083)
if __name__ == '__main__':
p = multiprocessing.Process(target=task)
p.daemon = True # 设置为[守护进程](https://geek.csdn.net/educolumn/0265246ff8ad326f8fe9ad1ff5ee869e?spm=1055.2569.3001.10083),主程序退出时自动结束
p.start()
在以上代码中,`task()`是要在后台执行的程序代码。`multiprocessing.Process()`用于创建一个进程[对象](https://geek.csdn.net/educolumn/04c51611e4b730957464192e0307b82c?spm=1055.2569.3001.10083),`target`参数指向了要执行的任务代码。`p.daemon = True`设置该进程为[守护进程](https://geek.csdn.net/educolumn/0265246ff8ad326f8fe9ad1ff5ee869e?spm=1055.2569.3001.10083),以便在主程序退出时自动结束进程。`p.start()`方法启动进程。
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