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I'm writing a relatively simple Python script which supports a couple of different commands. The different commands support different options and I want to be able to pass the options parsed by argparse to the correct method for the specified command. The usage string looks like so: usage: script.py [-h] {a, b, c} ... script.py: error: too few arguments I can easily call the appropriate method: def a(): ... def b(): ... def c(): ... if __name__ == "__main__": parser = argparse.ArgumentParser() parser.set_defaults(method = a) ... arguments = parser.parse_args() arguments.method() However, I have to pass arguments to these methods and they all accept different sets of arguments. Currently, I just pass the Namespace object returned by argparse, like so: def a(arguments): arg1 = getattr(arguments, 'arg1', None) ... This seems a little awkward, and makes the methods a little harder to reuse as I have to pass arguments as a dict or namespace rather than as usual parameters. I would like someway of defining the methods with parameters (as you would a normal function) and still be able to call them dynamically while passing appropriate parameters. Like so: def a(arg1, arg2): ... if __name__ == "__main__": parser = argparse.ArgumentParser() parser.set_defaults(method = a) ... arguments = parser.parse_args() arguments.method() # <<<< Arguments passed here somehow Any ideas?

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