| 1 | class BinaryTreeNode: |
| 2 | |
| 3 | def __init__(self, value): |
| 4 | self.value = value |
| 5 | self.left = None |
| 6 | self.right = None |
| 7 | self.parent = None |
| 8 | |
| 9 | def setLeft(self, leftvalue): |
| 10 | leftnode = BinaryTreeNode(leftvalue) |
| 11 | self.left = leftnode |
| 12 | if leftnode != None: |
| 13 | leftnode.parent = self |
| 14 | |
| 15 | def setRight(self, rightvalue): |
| 16 | rightnode = BinaryTreeNode(rightvalue) |
| 17 | self.right = rightnode |
| 18 | if rightnode != None: |
| 19 | rightnode.parent = self |