how to run a python program inside another and save the output

Question

I'm writing a code in which inside of it I need to run another python file which I have the path for it , and to save its output ( the exception it returns or the output it self ). Can someone guide me ? I tried subprocess but it doesn't run :

import subprocess    
output = call ('python' , filePath)

thanks in advance

Did you read the documentation of subprocess? For that matter, did you read the documentation in general (the code shown does not correctly import subprocess.call)? Note that subprocess.run and subprocess.check_output are more appropriate for what you intend to do. — MisterMiyagi
– MisterMiyagi, Commented Sep 16, 2020 at 14:17
Does this answer your question? What is the best way to call a script from another script? — Tomerikoo
– Tomerikoo, Commented Sep 16, 2020 at 14:33

scotty3785 · Accepted Answer · 2020-09-16 14:21:16Z

1

Short answer is don't. This is not the intended way to call python code from another python program.

If you want to run functionality from a second python function you should import the other file and call a function.

For example

#MainProg.py
import OtherProg

result = OtherProg.add(2,2)
print(result)

.

#OtherProg.py
def add(num1, num2):
    return num1 + num2

answered Sep 16, 2020 at 14:21

scotty3785

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1 Comment

MisterMiyagi Over a year ago

There are many Python programs that are not suitable for import by other programs – either because they would interfere with the program state (e.g. library versions) or only expose a CLI.

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