frozen.py

FROZEN_ERROR = 'frozen objects are read only'


def frozen(iterable):
    class Frozen(type(iterable)):
        def __setitem__(self, key, value):
            raise Exception(FROZEN_ERROR)

        def __set__(self, instance, value):
            raise Exception(FROZEN_ERROR)

        def __delitem__(self, key):
            raise Exception(FROZEN_ERROR)

        def __delete__(self, instance):
            raise Exception(FROZEN_ERROR)

        def __delslice__(self, i, j):
            raise Exception(FROZEN_ERROR)

        def __setattr__(self, key, value):
            raise Exception(FROZEN_ERROR)

        def __setstate__(self, state):
            raise Exception(FROZEN_ERROR)

        def __setslice__(self, i, j, sequence):
            raise Exception(FROZEN_ERROR)

        def __trunc__(self):
            raise Exception(FROZEN_ERROR)

        def clear(self):
            raise Exception(FROZEN_ERROR)

        def append(self, *args, **kwargs):
            raise Exception(FROZEN_ERROR)

        def insert(self, *args, **kwargs):
            raise Exception(FROZEN_ERROR)

        def pop(self, *args, **kwargs):
            raise Exception(FROZEN_ERROR)

        def update(self, *args, **kwargs):
            raise Exception(FROZEN_ERROR)

    return Frozen(iterable)