抑制 subprocess.Popen 的输出

2023-07-22Python开发问题
60

本文介绍了抑制 subprocess.Popen 的输出的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着跟版网的小编来一起学习吧!

问题描述

如何停止 subprocess.Popen 的输出?如果打印量很大,打印有时会很慢.

How do you stop the output from subprocess.Popen from being output? Printing can sometimes be slow if there is a great deal of it.

推荐答案

如果你想彻底扔掉:

import subprocess
import os
with open(os.devnull, 'w') as fp:
    cmd = subprocess.Popen(("[command]",), stdout=fp)

如果您使用的是 Python 2.5,则需要 from __future__ import with_statement,或者干脆不要使用 with.

If you are using Python 2.5, you will need from __future__ import with_statement, or just don't use with.

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