from collections.abc import MutableMapping

class PP_Context(MutableMapping):

    def __init__(self, *args, **context):
        self.store = dict()
        self.update(dict(*args, **context))

    def get(self, thing):
        return self.store.get(thing)

    def get_or_set(self, thing, this):
        if self._has(thing):
            return self.get(thing)
        self.set(thing, this)
        return self.get(thing)

    def get_or_false(self, thing):
        if self._has(thing):
            ret = self.get(thing)
            if not ret is None:
                return ret
        return False

    def set(self, thing, value):
        self.__setitem__(thing, value)

    def _has(self, thing):
        if (isinstance(thing, str) or isinstance(thing, int)) and thing in self.store:
            return True
        return False

    def __getitem__(self, key):
        return self.store[self.__keytransform__(key)]

    def __setitem__(self, key, value):
        self.store[self.__keytransform__(key)] = value
        setattr(self, self.__keytransform__(key), value)

    def __delitem__(self, key):
        del self.store[self.__keytransform__(key)]
        delattr(self, self.__keytransform__(key))

    def __iter__(self):
        return iter(self.store)

    def __len__(self):
        return len(self.store)

    def __keytransform__(self, key):
        # :D
        return key.lower()