python中关于链表的操作

Python中可以使用类来实现链表，具体操作包括创建链表、添加节点、删除节点、查找节点等。以下是一个简单的链表类示例：

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

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

    def add_node(self, data):
        new_node = Node(data)
        if self.head is None:
            self.head = new_node
        else:
            current = self.head
            while current.next is not None:
                current = current.next
            current.next = new_node

    def remove_node(self, data):
        if self.head is None:
            return
        if self.head.data == data:
            self.head = self.head.next
            return
        current = self.head
        while current.next is not None:
            if current.next.data == data:
                current.next = current.next.next
                return
            current = current.next

    def find_node(self, data):
        current = self.head
        while current is not None:
            if current.data == data:
                return True
            current = current.next
        return False

使用示例：

# 创建链表
llist = LinkedList()

# 添加节点
llist.add_node(1)
llist.add_node(2)
llist.add_node(3)

# 删除节点
llist.remove_node(2)

# 查找节点
print(llist.find_node(1))  # True
print(llist.find_node(2))  # False