Class ImmutablePoint

example_code/item_056.py:79–87

print("Example 5")
class ImmutablePoint:
    def __init__(self, name, x, y):
        self.__dict__.update(name=name, x=x, y=y)

    def __setattr__(self, key, value):
        raise AttributeError("Immutable object: set not allowed")

    def __delattr__(self, key):
        raise AttributeError("Immutable object: del not allowed")


# Verify del is also prevented