出现错误 - AttributeError: 'module' object has no attrib

问题描述

我在 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()函数只存在于Python 3.5及更新版本.

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

然而，向后移植很容易:

It is easy enough to backport however:

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，也不支持完成进程信息的自定义类，所以我只返回 retcode、stdout 和 stderr信息.否则它和原来的一样.