battalion 0.2.0

Python framework for commandline applications

Python framework for commandline applications

Quickstart

Feeling impatient? I like your style.

$ pip install battalion

In mycli.py script:

from battalion.api import *


class DB(object):

    def __init__(self, state):
        self.msg = state.msg

    def myfunc(self):
        return self.msg


@fixture
def db(state):
    return DB(state)


class mycli(CLI):
    """
    Toplevel program - mycli
    """
    class State:
        version = '0.0.1'
        msg = ""

    @command
    def normal_function(cli, db, data=None):  # NOTE: the "db" arg will be populated from the "db" fixture function
        """Takes in data and outputs new data"""
        if data is None:
            return db.myfunc()
        else:
            return data

    @command
    def greeting(cli, name="Hello"):
        """
        Prints "Hello {name}!"
        """
        print "Hello {0}!".format(name)


class myhandler(Handler):
    """
    Organizational container of commands which can also add state variables
    """
    class State:
        version = '0.0.2'  # Handlers can have their own versioning
        cli = 'mycli'
        msg = "World"

    @command
    def validate(cli, data):
        return data

    @command
    def hello(cli, msg=None):
        """
        Prints "Hello World!"
        """
        name = cli.normal_function(data=msg)
        name = cli.myhandler.validate(data=name)
        cli.greeting(name=name)


if __name__ == "__main__":
    mycli.main()

Then on the commandline

$ python mycli.py myhandler hello
> Hello World!
$ #or if installed as a console script via setuptools
$ mycli myhandler hello
> Hello World!
$ #also
$ mycli myhandler hello "Josh"
> Hello Josh!
$ mycli --help
> Toplevel program - mycli
>
> Usage:
>     mycli [options] <command> [<args>...]
>     mycli [options]
>
> Options:
>     -h, --help                     Show this screen.
>     --version                      Show version.
>     -d, --debug                    Show debug messages
>     --config=<CONFIG>              The config filepath [default: ~/.mycli/mycli.yaml]
>
> Commands:
>     greeting                       Prints "Hello {name}!"
>     myhandler                      Organizational container of commands which can also add state variables
>
$ mycli myhandler hello --help
> Prints "Hello World!"
>
> Usage:
>     hello [options]
>     hello <msg>
>
> Options:
>     --msg=<MSG>                      [default: None]
>