How to run an inline shell script from python?

Question

I have a small shell script in a string inside my python file.
Now I'd like to run this script via subprocess.call() and I wonder what's the best way.

My first thought was to write the script to a StringIO and specify that via stdin=... but unfortunately you cannot specify a StringIO since it doesn't have a fileno() method.

Of course I could use stdin=subprocess.PIPE and then write to it using subprocess.communicate() but I wonder if there's a simpler method.

nosklo · Accepted Answer · 2012-01-27 20:07:30Z

9

import subprocess

script = """
for x in 1 2 3 ; do echo $x ; sleep 1 ; done
"""

subprocess.call(['sh', '-c', script])

answered Jan 27, 2012 at 20:07

nosklo

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2 Comments

ThiefMaster Over a year ago

Thanks, that solved my problem. I tried that before but apparently I failed at copy&paste and thus my bash script had an error.

nosklo Over a year ago

for the record, subprocess.Popen(['sh'], stdin=subprocess.PIPE).communicate(script) would also work, but you lose stdin.

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