You should use a postorder iteration method for the tree's __iter__ method to enable the user to create a clone of the tree with the same shape as the original.

Question

Quizplus · Accepted Answer

Using a postorder iteration for cloning a tree would not ensure the cloned tree has the same shape as the original because postorder traversal focuses on visiting the children nodes before the parent node, which doesn't inherently preserve the tree structure during cloning. Preorder or level-order traversal is typically used for cloning to maintain the structure.

You Should Use a Postorder Iteration Method for the Tree's