如何根据输入创建单链表

# 定义链表节点的数据结构
class ListNode:
    def __init__(self, val=0, next=None):
        self.val = val
        self.next = next

# 创建链表的函数
def createLinkedList():
    # 创建头节点
    head = ListNode()
    curr = head

    # 输入数据，直到输入结束
    while True:
        val = input("请输入节点的值（输入q结束）：")
        if val == 'q':
            break

        # 创建新节点
        node = ListNode(int(val))

        # 将新节点插入链表
        curr.next = node
        curr = curr.next

    return head.next

# 测试代码
if __name__ == "__main__":
    # 创建链表
    linkedList = createLinkedList()

    # 打印链表的值
    curr = linkedList
    while curr:
        print(curr.val, end=" ")
        curr = curr.next