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
* 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
`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.
$ pip install argh
A very simple application with one command::
from argh import *
return 'Hello ' + args.name
An application with multiple commands::
def another_echo(text='hi there'):
parser = ArghParser()
if __name__ == '__main__':
The powerful API of `argparse` is also available::
@arg('text', default='hello world', nargs='+', help='The message')
The approaches can be safely combined.
`Argh` runs on Python 2.x (since 2.6, incl. PyPy) and 3.x. See 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
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:
Here's the discussion group:
Among applications that use `argh` are Tool_, OrgTool_, Watchdog_, Poni_, Pyg_,
Barman_ 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
.. _Barman: http://pgbarman.org
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/>.