How do you use subprocess.check_output() in Python?

Question

I have found documentation about subprocess.check_output() but I cannot find one with arguments and the documentation is not very in-depth. I am using Python 3 (but am trying to run a Python 2 file through Python 3)

I am trying to run this command: python py2.py -i test.txt

-i is a positional argument for argparse, test.txt is what the -i is, py2.py is the file to run

I have tried a lot of (non-working) variations including:

py2output = subprocess.check_output([str('python py2.py '),'-i', 'test.txt'])

py2output = subprocess.check_output([str('python'),'py2.py','-i', test.txt'])

Answer 1

You can use the below-mentioned code to see it:-

py2output = subprocess.check_output(['python','py2.py','-i', 'test.txt'])

To know more about this you can have a look at the following video tutorial:-