answer.py

#!/usr/bin/env python

#-------------------------------------------------------------------------------
# Definition for a binary tree node.
# class TreeNode(object):
#     def __init__(self, x):
#         self.val = x
#         self.left = None
#         self.right = None

class Solution(object):
    def isSameTree(self, p, q):
        """
        :type p: TreeNode
        :type q: TreeNode
        :rtype: bool
        """
        if p and q:
            return (p.val == q.val) and (self.isSameTree(p.left, q.left)) and (self.isSameTree(p.right, q.right))
        return p is q
#-------------------------------------------------------------------------------
# Testing