Dict Dispatcher

dictdispatcher.py

class Renderer:
    def __init__(self, entity):
        self._entity = entity

    def _expression(self):
        return (type(self._entity))

    _dispatch_table = {}

    def __call__(self, *args, **kw):
        return self.__class__._dispatch_table[self._expression()](self)

class IntRenderer(Renderer):

    def _render_entity(self):
        return 'INTEGER {}'.format(self._entity)

    Renderer._dispatch_table[int] = _render_entity



class FloatRenderer(Renderer):
    _type = float

    def _render_entity(self):
        return 'FLOAT {}'.format(self._entity)

    Renderer._dispatch_table[float] = _render_entity


class CompositeRenderer(
    IntRenderer,
    FloatRenderer,
):
    pass


if __name__ == '__main__':
    numbers = [10, 4.1, 91.1, 1000]
    for number in numbers:
        renderer = CompositeRenderer(number)
        print(renderer())

    '''
    OUTPUT:

    INTEGER 10
    FLOAT 4.1
    FLOAT 91.1
    INTEGER 1000
    '''