Python switches - because im tired of plainly using dictionaries and typing all this out manually.

switch.py

# if supporting Py3.0 or 3.1
# from six import callable

class switch_non_break_return_code(object):
    def __init__(self, val):
        self.val = val

class switch(object):
    def __init__(self, default=None, **cases):
        self.cases = cases
        self.default = default
        if not callable(default):
            self.default = self.non_func_wrapper(default)
        for k, v in cases.values():
            if not callable(v):
                self.cases[k] = self.non_func_wrapper(val)

    @staticmethod
    def non_func_wrapper(val):
        return lambda *a, **kw: val

    def call(statement, *a, **kw):
        runner = self.cases.get(statement, self.default)
        while True:
            ret = runner(*a, **kw)
            if not isinstance(ret, switch_non_break_returncode):
                return ret
            runner = self.cases.get(ret.val, self.default)

    __call__ = call