Method _traverse

example_code/item_054.py:106–113

(self, key, value)

        self.parent = parent

    def _traverse(self, key, value):
        if (
            isinstance(value, BinaryTreeWithParent)
            and key == "parent"
        ):
            return value.value  # Prevent cycles
        else:
            return super()._traverse(key, value)


print("Example 5")