python--打印两个有序链表的公共部分

#! conding:utf-8__author__ = "hotpot"__date__ = "2017/10/30 8:48"class Node(object):    def __init__(self, val, next):        self.val = val        self.next = nextdef print_common_part(node1,node2):    while node1 and node2:        if node1.val<node2.val:            node1=node1.next        elif node1.val>node2.val:            node2 = node2.next        else:            print(node1.val)            node1=node1.next            node2 = node2.next