Execute bash function in a script and get return

Question

i want to execute bash function in a script and i want to print the return function.

this is my current code

function myfunct() { 
 return 1
}

and my python code:

process = subprocess.Popen(['bash', '-c', '. myscript.sh; myfunct'])
output, error = process.communicate()
print(output)

i have "None" output, i want 1 output

Answer 1

The return value of a script isn’t streamed to a standard stream. It sets an exit code, which you can query via process.returncode.

Since you aren’t actually reading the script’s standard streams, don’t use Popen/communicate — use run instead:

process = subprocess.run(['bash', '-c', '. myscript.sh; myfunct'])
result = process.returncode