lastopt

lastopt is a Python utility for quickly creating command line utilities using function and class introspection.

Example

#!/usr/bin/env python

import lastopt

def install(package, dependencies=False):
    print "install %s, with dependencies: %s" % (
        package, dependencies and 'yes' or 'no')

class Env(object):
    def __init__(self, name):
        self.name = name

    def start(self, package):
        print "starting %s.%s" % (self.name, package)

lastopt.main([install, Env])

$ ./command

Usage: ./command COMMAND [ARGS]

The available commands are:
    env
    install

$ ./command install --help

Usage: ./command install <package> [options]

Options:
  -h, --help          show this help message and exit
  --nodependencies    unset --dependencies
  -d, --dependencies   (default: False)

$ ./command install redis -d

install redis, with dependencies: yes

$ ./command env production

Usage: ./command env production COMMAND [ARGS]

The available commands are:
    start

$ ./command env production start frontend

starting production.frontend

History

lastopt is directly inspired by Simon Willison's clever introspection hack from a few years back: https://github.com/simonw/optfunc