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Dead-simple command line argument parsing

Project description

# dont-argue
Dead-simple command line arguments for python scripts.

I got sick of re-learning the argparse module every time I just needed to pass
in a few simple command line arguments for a python script. `dont_argue` skips
the boring stuff and lets you get started in a flash.

## Usage

**dont\_argue** provides the decorator **supply\_args**, use it on a function
and that function's arguments will be provided from the command line.

Check it out:
from dont_argue import supply_args
def main(name, location, *friends):
friends = ', '.join(friends)
print 'Hello {} from {} and your friends {}'.format(name, location, friends)

# Now to kick things off we just call the function, the arguments come from the
# command line, so we don't give any here.

Try it out:
$ ./ Joe Alabama Jake Drake
Hello Joe from Alabama and your friends Jake, Drake
If that's all you need, then you're done! Also notice how all the extra
arguments get packed up into `*friends` as expected.

You can also work with command line options by specifying keyword arguments for
your function. They can be specified on the command line using the
`--option=value` or `--option value` syntax.
def main(name, mood='FRIENDLY'):
if mood == 'FRIENDLY':
print 'Hello {}! Welcome here!'.format(name)
elif mood == 'ANGRY':
print 'Hey {}! Get out of my house!'.format(name)

Now we can specify `mood` or not. Also note that providing too few arguments or
using the -h flag will display usage information.
$ ./ Joe
Hello Joe! Welcome here!
$ ./ Joe --mood ANGRY
Hey Joe! Get out of my house!
$ ./ -h
usage: [-h] [--mood MOOD] name

positional arguments:

optional arguments:
-h, --help show this help message and exit
--mood MOOD

Arbitrary keyword arguments don't make a ton of sense on the command line, so
you must explicitly declare your keyword arguments, `**kwargs` won't work with
command line options.

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