Climmands

Climmands is a small package that provides a convenient abstraction for cli subcommands.

Each command is described by different class. These classes should inherit from Command class. The CommandLoader class is responsible for collecting all commands in module scope. CommandExecutor execute a proper command and pass it the rest of command line arguments.

Warning: it's a toy and untested package. Use only for your own responsibility!

Installation

$ pip install climmands

Example

#!/usr/bin/env python

import argparse
import climmands

class HelloWorldCommand(climmands.Command):
	name = 'hello'
	description = 'Print Hello World message'

	def execute(self, parsed_arguments):
		print('Hello world')

class AddTwoNumbersCommand(climmands.Command):
	name = 'add'
	description = 'Add two numbers and print result'

	def initialize_arguments_parser(self, parser):
		parser.add_argument('first', help='First number')
		parser.add_argument('second', help='Second number')

	def execute(self, parsed_arguments):
		first = int(parsed_arguments.first)
		second = int(parsed_arguments.second)
		result = first + second

		print(f'{first} + {second} = {result}')

def main():
	parser = argparse.ArgumentParser(description='My great command')
	commands = climmands.CommandLoader(parser).load_commands()
	executor = climmands.CommandExecutor(commands)

	parsed_arguments = parser.parse_args()
	if not executor.execute(parsed_arguments):
		parser.print_help()

if __name__ == '__main__':
	main()