如何在python中创建链表

class ListNode:
    def __init__(self, value):
        self.val = value
        self.next = None

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

    def addNode(self, value):
        newNode = ListNode(value)
        if self.head is None:
            self.head = newNode
        else:
            curr = self.head
            while curr.next:
                curr = curr.next
            curr.next = newNode

# 创建链表对象
myList = LinkedList()

# 添加节点
myList.addNode(1)
myList.addNode(2)
myList.addNode(3)

def printLinkedList(linkedList):
    curr = linkedList.head
    while curr:
        print(curr.val)
        curr = curr.next

# 打印链表
printLinkedList(myList)