homepage

Python returns a different exit status when an exception is raised and -m is used as opposed to just running a module.
A short example, let's call it foo.py:
 def main():
 raise ValueError()
 if __name__ == '__main__':
 main()
When run with python foo.py the exit status of the process is 1. If run with python -mfoo the exit status of the process is 255.