如何正确地从泛型链表中删除一个节点？

def delete_node(head, target):
    # 处理链表为空的情况
    if head is None:
        return head
    
    # 处理要删除的节点是头节点的情况
    if head.data == target:
        head = head.next
        return head
    
    # 遍历链表，找到要删除节点的前一个节点
    current = head
    while current.next is not None:
        if current.next.data == target:
            break
        current = current.next
    
    # 处理要删除的节点不存在的情况
    if current.next is None:
        return head
    
    # 删除节点
    current.next = current.next.next
    
    return head