Python子进程readlines()?

问题描述

所以我正在尝试按照用户指南的建议从 os.popen 转移到 subprocess.popen.我遇到的唯一麻烦是我似乎找不到使 readlines() 工作的方法.

So I'm trying to move away from os.popen to subprocess.popen as recommended by the user guide. The only trouble I'm having is I can't seem to find a way of making readlines() work.

原来我能做到

list = os.popen('ls -l').readlines()

但我做不到

list = subprocess.Popen(['ls','-l']).readlines()

推荐答案

配合subprocess.Popen，使用communicate读写数据:

out, err = subprocess.Popen(['ls','-l'], stdout=subprocess.PIPE).communicate() 

然后，您始终可以使用 splitlines() 从进程的 stdout 中拆分字符串.

Then you can always split the string from the processes' stdout with splitlines().

out = out.splitlines()

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