从subprocess.Popen获取整个输出

Question

我通过调用subprocess.Popen获得了一个有点奇怪的结果,我怀疑这与我对Python的全新特性有很大关系.

args = [ 'cscript', '%USERPROFILE%\\tools\\jslint.js','%USERPROFILE%\\tools\\jslint.js' ]
p = Popen(args, stdout=PIPE, shell=True).communicate()[0]

输出结果如下(尾随双\ r \n是否存在,以防它重要)

Microsoft (R) Windows Script Host Version 5.8
Copyright (C) Microsoft Corporation. All rights reserved.\r\n\r\n

如果我从交互式Python shell运行该命令,它看起来像这样

>>> args = ['cscript', '%USERPROFILE%\\tools\\jslint.js', '%USERPROFILE%\\tools\jslint.js']
>>> p = subprocess.Popen(args, stdout=subprocess.PIPE, shell=True).communicate()[0]
Lint at line 5631 character 17: Unexpected /*member 'OpenTextFile'.
f = fso.OpenTextFile(WScript.Arguments(0), 1),

...

Lint at line 5649 character 17: Unexpected /*member 'Quit'.
WScript.Quit(1);

所以我真正关心的是所有输出,但如果我转储"p"变量的值,我只需设置...

>>> p
'Microsoft (R) Windows Script Host Version 5.8\r\nCopyright (C) Microsoft Corpor
ation. All rights reserved.\r\n\r\n'
>>>

我想要的所有数据到底在哪里？它绝对不会以"p"结束.看起来它是stdout,但我没有明确告诉它不要这样做？

我在使用Python 2.6.6的Windows 7 x64上运行它

Answer 1

它会去stderr吗？尝试重定向:

p = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, shell=True).communicate()[0]