subprocess.check_output() 似乎不存在(Python 2.6.5) [英] subprocess.check_output() doesn't seem to exist (Python 2.6.5)

问题描述

我一直在阅读有关 subprocess 模块的 Python 文档(请参阅此处)和它谈到了一个 subprocess.check_output() 命令，这似乎正是我所需要的.

然而，当我尝试使用它时，我得到一个错误，它不存在，当我运行 dir(subprocess) 时，它没有被列出.

我正在运行 Python 2.6.5，我使用的代码如下:

导入子流程subprocess.check_output(["ls", "-l", "/dev/null"])

有人知道为什么会这样吗?

解决方案

它是在 2.7 中引入的，参见 文档.

如果需要输出，请使用 subprocess.Popen:><预><代码>>>>导入子流程>>>output = subprocess.Popen(['ls', '-l'], stdout=subprocess.PIPE).communicate()[0]

I've been reading the Python documentation about the subprocess module (see here) and it talks about a subprocess.check_output() command which seems to be exactly what I need.

However, when I try and use it I get an error that it doesn't exist, and when I run dir(subprocess) it is not listed.

I am running Python 2.6.5, and the code I have used is below:

import subprocess
subprocess.check_output(["ls", "-l", "/dev/null"])

Does anyone have any idea why this is happening?

解决方案

It was introduced in 2.7 See the docs.

Use subprocess.Popen if you want the output:

>>> import subprocess
>>> output = subprocess.Popen(['ls', '-l'], stdout=subprocess.PIPE).communicate()[0]

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