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Status](https://readthedocs.org/projects/k3shell/badge/?version=stable)](https://k3shell.readthedocs.io/en/stable/?badge=stable)\n[![Package](https://img.shields.io/pypi/pyversions/k3shell)](https://pypi.org/project/k3shell)\n\nA python module to manage commands.\n\nk3shell is a component of [pykit3] project: a python3 toolkit set.\n\n\n#   Name\n\nk3shell\n\n#   Status\n\nThe library is considered production ready.\n\n\n\n\n# Install\n\n```\npip install k3shell\n```\n\n# Synopsis\n\n```python\n\nimport k3shell\nimport sys\narguments = {\n    'echo_repr': (\n        lambda x: sys.stdout.write(repr(x)),\n        ('x', {'nargs': '+', 'help': 'just an input message'}),\n    ),\n\n    'foo': {\n        'bar': lambda: sys.stdout.write('bar'),\n\n        'bob': {\n            'plus': (\n                lambda x, y: sys.stdout.write(str(x + y)),\n                ('x', {'type': int, help: 'an int is needed'}),\n                ('y', {'type': int, help: 'an int is needed'}),\n            ),\n        },\n    },\n\n    '__add_help__': {\n        ('echo_repr',)           : 'output what is input.',\n        ('foo', 'bar',)          : 'print a \"bar\".',\n        ('foo', 'bob', 'plus',)  : 'do addition operation with 2 numbers.',\n    },\n\n    '__description__': 'this is an example command.',\n}\n\nk3shell.command(**arguments)\n\"\"\"\n\nthen you can execute your command as:\n\npython demo.py echo_repr hello!\n# 'hello!'\n\npython demo.py foo bar\n# 'bar'\n\npython demo.py foo bob plus 1 2\n# 3\n\n\nand you can get a usage help message like:\n\n$ python demo.py -h\n---------------------------\nusage: demo.py [-h] {echo_repr, foo bar, foo bob plus} ...\n\nthis is an example command.\n\npositional arguments:\n  {echo_repr, foo bar, foo bob plus} commands to select ...\n    echo_repr            output what is input.\n    foo bar              print a \"bar\".\n    foo bob plus         do addition operation with 2 numbers.\n\noptional arguments:\n    -h, --help           show this help message and exit\n\n\n$ python demo.py foo bob plus -h\n--------------------------\nusage: demo.py foo bob plus [-h] x y\n\npositional arguments:\n    x   an int is need\n    y   an int is need\n\noptional arguments:\n    -h, --help           show this help message and exit\n\n\"\"\"\n```\n\n#   Author\n\nWenbo Li(李文博) \u003cwenbo.li@baishancloud.com\u003e\n\n#   Copyright and License\n\nThe MIT License (MIT)\n\nCopyright (c) 2017 Wenbo Li(李文博) \u003cwenbo.li@baishancloud.com\u003e\n\n\n[pykit3]: https://github.com/pykit3","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fpykit3%2Fk3shell","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fpykit3%2Fk3shell","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fpykit3%2Fk3shell/lists"}