题目：写一个程序，用来存储学生的姓名和年龄，请用链表实现

#!/usr/bin/env python

class StudentNode(object):
        def __init__(self, name, age, next_=None):
                self.student = [name, age]
                self.next = next_

class StudentList(object):
        def __init__(self):
                self.head = None
                self.num = 0

        def prepend(self, name, age):
                self.head = StudentNode(name, age, self.head)
                self.num += 1

        def bianli(self):
                p = self.head
                li = []
                while p:
                        li.append(p.student)
                        p = p.next
                return li

if __name__ == '__main__':
        s = StudentList()
        s.prepend("xuqiang",18)
        s.prepend("lisa",20)
        print(s.bianli())

结果：

[['lisa', 20], ['xuqiang', 18]]