On Thu, Jun 18, 2015 at 11:56 AM, Tony the Tiger <tony@tiger.invalid> wrote: > I would have assumed there would be something built in to the > ArgumentParser, but I can't detect anything that seems to do what I want, > so I wrote the following:
[SNIP] > So, is there something already in the Python libs? Do I continue with > this? Or what? > > There ought to be something already built in to Python, but I think I've > missed it. Sure hope so. I'd hate to continue with this mess. You can specify custom actions for arguments. See https://docs.python.org/3.4/library/argparse.html#action-classes For example (untested): class AppendCallable(argparse.Action): def __call__(self, parser, namespace, values, option_string): callables = getattr(namespace, self.dest, None) or [] callables.append(functools.partial(self.const, *values)) setattr(namespace, self.dest, callables) def main(): parser = argparse.ArgumentParser() parser.add_argument( '-a', '--alfa', action=AppendCallable, const=option_alfa, dest='callables', nargs=1, type=int) parser.add_argument( '-b', '--bravo', action=AppendCallable, const=option_bravo, dest='callables', nargs=0) args = parser.parse_args() for callable in args.callables: callable() You might also be interested in reading https://docs.python.org/3.4/library/argparse.html#sub-commands in case that's related to what you're trying to accomplish. -- https://mail.python.org/mailman/listinfo/python-list
