不多说,直接贴程序,如下所示 # -*- coding: utf-8 -*- # 定义二叉树节点类 class TreeNode(object): def __init__(self,data=0,left=0,right=0): self.data = data self.left = left self.right = right # 遍历某一层所有节点,并打印 def TransLevel(root,level): if root == None: return else: if leve