Python 出现错误 - AttributeError: 'module' 对象在运行 subprocess.run(["ls", "-l"]) 时没有属性 'run'
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Getting an error - AttributeError: 'module' object has no attribute 'run' while running subprocess.run(["ls", "-l"])
提问by nisarga lolage
I am running on a AIX 6.1 and using Python 2.7. Want to execute following line but getting an error.
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。
subprocess.run(["ls", "-l"])
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: 'module' object has no attribute 'run'
回答by Martijn Pieters
The subprocess.run()functiononly exists in Python 3.5 and newer.
该subprocess.run()函数仅存在于 Python 3.5 及更新版本中。
It is easy enough to backport however:
然而，向后移植很容易：
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
There is no support for timeouts, and no custom class for completed process info, so I'm only returning the retcode, stdoutand stderrinformation. Otherwise it does the same thing as the original.
不支持超时，也没有用于完成进程信息的自定义类，所以我只返回retcode,stdout和stderr信息。否则它会做与原始相同的事情。
