收到错误-AttributeError：运行subprocess.run（[[“ ls”，“ -l”]）时'module'对象没有属性'run' [英] Getting an error - AttributeError: 'module' object has no attribute 'run' while running subprocess.run(["ls", "-l"])

问题描述

我正在AIX 6.1上运行并使用Python 2.7。想要执行以下行但出现错误。

I am running on a AIX 6.1 and using Python 2.7. Want to execute following line but getting an error.

subprocess.run(["ls", "-l"])
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: 'module' object has no attribute 'run'

推荐答案

subprocess.run（） 函数仅在Python 3.5和更高版本中存在。

The subprocess.run() function only exists in Python 3.5 and newer.

但是很容易向后移植：

def run(*popenargs, **kwargs):
    input = kwargs.pop("input", None)
    check = kwargs.pop("handle", False)

    if input is not None:
        if 'stdin' in kwargs:
            raise ValueError('stdin and input arguments may not both be used.')
        kwargs['stdin'] = subprocess.PIPE

    process = subprocess.Popen(*popenargs, **kwargs)
    try:
        stdout, stderr = process.communicate(input)
    except:
        process.kill()
        process.wait()
        raise
    retcode = process.poll()
    if check and retcode:
        raise subprocess.CalledProcessError(
            retcode, process.args, output=stdout, stderr=stderr)
    return retcode, stdout, stderr

不支持超时，也没有用于完成过程信息的自定义类，所以我只返回 retcode ， stdout 和 stderr 信息。否则，它的功能与原始功能相同。

There is no support for timeouts, and no custom class for completed process info, so I'm only returning the retcode, stdout and stderr information. Otherwise it does the same thing as the original.

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