plac is based on argparser and it is intended to be much easier to use. See
http://plac.googlecode.com/hg/doc/plac.html
Here is an example of usage.
$ cat vcs.py
class VCS(object):
"A fictitious version control tool"
commands = ['checkout', 'commit']
def checkout(self, url):
return 'ok'
def commit(self):
return 'ok'
if __name__ == '__main__':
import plac; plac.Interpreter.call(VCS)
The line plac.Interpreter.call instantiates the VCS class by passing to it the
arguments in the command line and then calls the appropriate method.
You can use the script as follows:
$ python vcs.py -h
usage: vcs.py [-h] [args [args ...]]
positional arguments:
args
optional arguments:
-h, --help show this help message and exit
$ python vcs.py checkout url
ok
$ python vcs.py commit
ok
plac takes care of parsing the command line, giving the correct error message
if you pass wrong arguments or not enough arguments:
$ python vcs.py checkout
usage: checkout url
checkout: error: too few arguments
plac can also be used to write command interpreters.
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