How to run python script from python with different interpreter version?

Question

How to run my script with one version of python from script with another version of python? Also, is there a way to catch all outputs of my script and print it?

Not sure I understand your second question. The output of your script is already being printed. If it wasn't, it wouldn't be called output. — Kevin
– Kevin, Commented Jul 21, 2014 at 19:18
Answer to the first question: Depends on the environment(Windows,Linux, etc). Answer to the second: print statement — Dudemanword
– Dudemanword, Commented Jul 21, 2014 at 19:19

Community · Accepted Answer · 2017-05-23 10:25:04Z

1

So you want to theoretically run say a script with python2 from a script running with python3? (Or something like that, I'm not really sure) If so I would use subprocess. You can find more information on that https://docs.python.org/2/library/subprocess.html and How do I execute a program from python? os.system fails due to spaces in path.

#my python3 script
import subprocess
subprocess.call(["python2", "python2scipt.py"])

edited May 23, 2017 at 10:25

CommunityBot

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answered Jul 21, 2014 at 19:23

Donkyhotay

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3 Comments

Jan Vlcinsky Over a year ago

Better use subprocess.call(["python2", "python2script.py"]) - each part of command line call being one item in the list.

alby Over a year ago

Thanks a lot. It worked for me:

output = subprocess.Popen(p,                           stdout=subprocess.PIPE,                           stderr=subprocess.PIPE,                           stdin=subprocess.PIPE).communicate()[0]

Donkyhotay Over a year ago

Oops, you're right I did forget those are necessary when using subprocesses. Thanks for the catch. I've corrected my example.

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