如何停止tkinter canvas widget / after方法跳过列表中的元素？

import tkinter as tk

def stop_after(canvas, elements_to_skip):
    stop_flag = False
    
    def skip_elements():
        nonlocal stop_flag
        
        if stop_flag:
            return
        
        if canvas.itemcget(element, 'tags') in elements_to_skip:
            stop_flag = True
        else:
            # 执行需要执行的操作
            print(canvas.itemcget(element, 'tags'))
        
        # 设置下一个执行的时间和递归函数本身
        canvas.after(1000, skip_elements)
    
    # 调用递归函数
    skip_elements()

# 创建一个Canvas组件
root = tk.Tk()
canvas = tk.Canvas(root)

# 添加元素
element1 = canvas.create_text(50, 50, text='Element 1', tags='skip')
element2 = canvas.create_text(100, 100, text='Element 2')
element3 = canvas.create_text(150, 150, text='Element 3', tags='skip')

# 设置要跳过的元素列表
elements_to_skip = ['skip']

# 调用stop_after函数
stop_after(canvas, elements_to_skip)

# 运行Tkinter主循环
root.mainloop()