How do I pass any file path as a command line argument from one program to another program in Python?

Question

I am trying to develop a code between two python program where I pass a command line argument for the second program to execute from the first program.

Answer 1

One approach would be to call a function from the second program instead of using command-line arguments. You can do this by importing the said function.

Another approach would be to use command-line arguments as you said, with the command System or the Subprocess module.

Answer 2

main.py

import os
os.system('python3 test.py 1 2 3')

Other program's main file

test.py

import sys

print('Number of arguments:', len(sys.argv), 'arguments.')
print('Argument List:', str(sys.argv))

Output

Number of arguments: 4 arguments.
Argument List: ['test.py', '1', '2', '3']

Run main.py which runs test.py file with arguments.

Answer 3

Try this in your first_program.py :

import os
os.system('python3.6 /path/to/second_program.py arg1')

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