Executing and saving command line

Question

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Executing command line programs from within python

How to execute single command within python and save everything between command and prompt to variable?
I've tried following code:

import os
var = os.system('ls')

Unfortunatelly, my var value is 0 instead 'ls' output.
How can I fix it?

Answer 1

You can use subprocess.check_output. Example from the linked documentation:

>>> subprocess.check_output(["echo", "Hello World!"])
'Hello World!\n'