When using argparse, I find subparsers [1] useful in these situations. import argparse def add_file(file): print('Added ' + file) def main():

When using argparse, I find subparsers [1] useful in these situations. import argparse def add_file(file): print('Added ' + file) def main(): parser = argparse.ArgumentParser() subparsers = parser.add_subparsers(title='Sub Commands') # add parser add_parser = subparsers.add_parser('add', help='Add a file') add_parser.add_argument('file', help='File to add') add_parser.set_defaults(func=lambda args: add_file(args.file)) args = parser.parse_args() args.func(args) [1] https://docs.python.org/3/library/argparse.html#sub-commands https://docs.python.org/3/library/argparse.html#sub-commands