抑制来自 subprocess.Popen 的输出 [英] Suppress output from subprocess.Popen

问题描述

如何阻止 subprocess.Popen 的输出被输出?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

如果你想彻底扔掉它:

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，您将需要 from __future__ import with_statement，或者不使用 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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