python 类例程，人、学生、老师以及异常的简单运用(Python class routines, people, students, teachers, and unusual simple use)

python的链表操作、单链表、循环链表、双向链表、带尾指针的链表以及链表排序等基本操作(Python linked list operations, single chain table, circular chain list, two-way chain list, with the tail pointer of the chain list, and chain sorting and other basic operations)

使用Python语言，利用递归的方式，实现顺时针输出整个矩阵中的每一个元素。同时还写了实现这个方法的超级简化版代码，体现了Python编程语言简洁的优点(Using Python language and recursive method, each element of the whole matrix can be output clockwise. At the same time, the simplified code to implement this method is also