在python中循环链表的乞求处插入

class Node:
    def __init__(self, data):
        self.data = data
        self.next = None

class CircularLinkedList:
    def __init__(self):
        self.head = None

    def insert(self, data):
        new_node = Node(data)

        if self.head is None:
            self.head = new_node
            self.head.next = self.head
        else:
            temp = self.head
            while temp.next != self.head:
                temp = temp.next
            temp.next = new_node
            new_node.next = self.head
            self.head = new_node

clist = CircularLinkedList()
clist.insert(10)
clist.insert(20)
clist.insert(30)

def insert_at_position(self, data, position):
    new_node = Node(data)

    if position == 0:
        temp = self.head
        while temp.next != self.head:
            temp = temp.next
        temp.next = new_node
        new_node.next = self.head
        self.head = new_node
    else:
        count = 0
        temp = self.head
        prev = None

        while temp.next != self.head and count < position:
            prev = temp
            temp = temp.next
            count += 1

        if count < position:
            print("Position out of range.")
            return

        prev.next = new_node
        new_node.next = temp

clist.insert_at_position(25, 1)