Как реализовать кольцевой список в python?

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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
            new_node.next = self.head
        else:
            temp = self.head
            while temp.next != self.head:
                temp = temp.next
            temp.next = new_node
            new_node.next = self.head

    def display(self):
        if self.head is None:
            print("List is empty")
        else:
            temp = self.head
            while True:
                print(temp.data, end=" ")
                temp = temp.next
                if temp == self.head:
                    break

# Пример использования
cll = CircularLinkedList()
cll.insert(1)
cll.insert(2)
cll.insert(3)
cll.insert(4)
cll.display()