# Overview

Agrh, argparse! =============== Did you ever say "argh" trying to remember the details of optparse or argparse API? If yes, this package may be useful for you. It provides a very simple wrapper for argparse with support for hierarchical commands that can be bound to modules or classes. Argparse can do it; argh makes it easy. In a nutshell ------------- Here's a list of features that argh adds to argparse: * mark a function as a CLI command and specify its arguments before the parser is instantiated; * nested commands made easy: no messing with subparsers (though they are of course used under the hood); * infer agrument type from the default value; * infer command name from function name; * add an alias root command help for the --help argument; * enable passing unwrapped arguments to certain functions instead of a argparse.Namespace object. Argh is fully compatible with argparse. You can mix argh-agnostic and argh-aware code. Just keep in mind that argh.dispatch does some extra work that a custom dispatcher may not do. Installation ------------ \$ pip install argh Example ------- A very simple application with one command:: @command def echo(text='hello'): print text parser = ArghParser() parser.add_commands([echo]) if __name__ == '__main__': parser.dispatch() The powerful API of argparse is also available:: @arg('text', default='hello world', nargs='+', help='The message') def echo(args): print args.text The approaches can be safely combined. Dependencies ------------ Argh runs on Python 2.x (since 2.6, incl. PyPy) and 3.x. See documentation. Documentation ------------- See the complete documentation_ for details. If it's not complete enough, feel free to ask your questions or submit bugs. .. _complete documentation: http://packages.python.org/argh Author ------ Originally written by Andrey Mikhaylenko in 2010. See file AUTHORS for a complete authors list of this application. Please feel free to submit patches, report bugs or request features: http://bitbucket.org/neithere/argh/issues/ Here's the discussion group: http://groups.google.com/group/argh-users Real-life usage --------------- Among applications that use argh are Tool_, OrgTool_, Watchdog_, Poni_, Pyg_ and more. Well, there's probably no need to keep a complete and up-to-date list. Still, please let me know anyway if you use argh in your project. I'll be glad to know. :-) .. _Tool: http://pypi.python.org/pypi/tool .. _OrgTool: http://pypi.python.org/pypi/orgtool .. _Watchdog: https://github.com/gorakhargosh/watchdog/ .. _Poni: https://github.com/melor/poni/commit/14e8ccbb50e9e17b95a2f2a0d2cd0af5d90ca22b .. _Pyg: https://github.com/rubik/pyg/commit/a201de1d70536e7e4637a6079f03174b7b493ffa Licensing --------- Argh is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. Argh is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with Argh. If not, see <http://gnu.org/licenses/>.