Why does bash echo print 0 for a Python function that exits 1

Question

With a Python function in testreturn.py defined as:

import sys
def main():
    sys.exit(1)

When called from a bash function in scrip.sh defined as:

#!/bin/bash
function test()
{  
   python testreturn.py
   echo $?
}

Why does the following command:

test

Print

0

I would like the bash function to print the exit code of the python script.

Answer 1

Because you're defining, but never calling the main() function. The code finishes as normal (by reaching the end of the file) and return code is 0 in this case.