如何从链表中获取项的指针

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

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

# 创建链表
head = Node(1)
node2 = Node(2)
node3 = Node(3)
head.next = node2
node2.next = node3

# 从链表中获取项的指针
target_item = 2
result = get_item_pointer(head, target_item)
if result is not None:
    print("找到了目标项的指针：", result)
else:
    print("链表中不存在该项")