.. -*- mode: rst -*- ======== Opster ======== Opster is a command line options parser, intended to make writing command line applications easy and painless. It uses built-in Python types (lists, dictionaries, etc) to define options, which makes configuration clear and concise. Additionally it contains possibility to handle subcommands (i.e. ``hg commit`` or ``svn update``). .. note:: Requires at least Python 2.6 Quick example ------------- That's an example of an option definition:: import sys from opster import command @command() def main(message, no_newline=('n', False, "don't print a newline")): '''Simple echo program''' sys.stdout.write(message) if not no_newline: sys.stdout.write('\n') if __name__ == '__main__': main.command() Running this program will print the help:: > ./ invalid arguments [OPTIONS] MESSAGE Simple echo program options: -n --no-newline don't print a newline -h --help show help As you can see, here we have defined option to not print newline: keyword argument name is a long name for option, default value is a 3-tuple, containing short name for an option (can be empty), default value (on base of which processing is applied - `see description`_) and a help string. Underscores in long names of options are converted into dashes. If you are calling a command with option using long name, you can supply it partially. In this case it could look like ``./ --no-new``. This is also true for subcommands: read about them and everything else you'd like to know in `documentation`_. .. _documentation: .. _see description:


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