Python how to exit main function [duplicate]
You can use sys.exit() to exit from the middle of the main function.
However, I would recommend not doing any logic there. Instead, put everything in a function, and call that from __main__ - then you can use return as normal.
You can't return because you're not in a function. You can exit though.
import sys
sys.exit(0)
0 (the default) means success, non-zero means failure.