如何捕获“subprocess.call"的输出?到一个文件? [英] How to capture the output from "subprocess.call" to a file?

问题描述

在我的代码中，我有一行类似于:

In my code I have a line similar to this:

rval = subprocess.call(["mkdir",directoryName], shell=True)

我可以检查rval，看看它是0还是1，但如果是1，我想要来自命令 "A subdirectory or file ben already exists." 的文本文件格式，所以如果我想确保文本是，我可以将它与另一个文件进行比较一样.

and I can check rval to see if it is 0 or 1, but if it is 1, I would like to have the text from the command "A subdirectory or file ben already exists." in a file format, so I can compare it to another file if I want to make sure the text is the same.

是否可以有这样的一行，但我知道这行不通

Is it possible to have a line like this, but I know this does not work

rval = subprocess.call(["mkdir",directoryName], shell=True) >> filename

所以无论命令发生什么，文本都被捕获在filename中，而rval还有返回码?

so no matter what happens with the command, the text is captured in filename, and rval still has the return code?

推荐答案

import subprocess
f = open(r'c:\temp\temp.txt','w')
subprocess.call(['dir', r'c:\temp'], shell=True, stdout=f)
f.close()

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