ckpypackage_manage.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""Cookiecutter PyPackage development tasks
"""
# To add a task, create a function with name starting with 'do_' that
# receives one argument (the parsed cmdline arguments object).
# Use a short docstring to serve as help.
#
# Example:
#
# def do_clean(args):
#     run('rm -rf build/')

from __future__ import print_function

import argparse
import inspect
import shlex
import subprocess
import sys


def run(cmd):
    return subprocess.check_output(shlex.split(cmd))


def do_help(args):
    "print this help"
    for name, func in sorted(TASKS.items()):
        print('%-20s %s' % (name, func.__doc__))


def do_bake(args):
    "generate project using defaults"
    run('cookiecutter --no-input . --overwrite-if-exists')


def find_tasks(module):
    """Find all tasks in given module.
    Tasks are just functions whose names start with 'do_'"""
    return {
        name[3:]: func
        for name, func in inspect.getmembers(module)
        if name.startswith('do_')
    }


def main():
    parser = argparse.ArgumentParser(description=__doc__)
    parser.add_argument('task', nargs='?',
                        default='help',
                        choices=tuple(TASKS),
                        help='Which task to run')
    args = parser.parse_args()

    # run task
    TASKS[args.task](args)


TASKS = find_tasks(sys.modules[__name__])


if '__main__' == __name__:
    main()

Sample runs:

$ python manage.py 
bake                 generate project using defaults
help                 print this help
$ python manage.py help
bake                 generate project using defaults
help                 print this help
$ python manage.py bake
$ ls python_boilerplate/
AUTHORS.rst       docs/         LICENSE*  MANIFEST.in          README.rst            setup.cfg  tests/   travis_pypi_setup.py
CONTRIBUTING.rst  HISTORY.rst*  Makefile  python_boilerplate/  requirements_dev.txt  setup.py   tox.ini