Aahz: > When have you ever had a binary tree a thousand levels deep? Yesterday.
>Consider how big 2**1000 is...< You are thinking just about complete binary trees. But consider that a topology like a single linked list (every node has 1 child, and they are chained) is a true binary tree still. Bye, bearophile -- http://mail.python.org/mailman/listinfo/python-list