停止tkinter中的无限函数

import tkinter as tk

def infinite_function():
    global running_flag
    if running_flag:
        # 无限函数的逻辑
        root.after(1000, infinite_function)  # 每隔一秒继续执行
    else:
        # 停止执行逻辑
        pass

def stop_infinite_function():
    global running_flag
    running_flag = False

root = tk.Tk()
running_flag = True

stop_button = tk.Button(root, text="停止函数", command=stop_infinite_function)
stop_button.pack()

root.after(1000, infinite_function)  # 开始执行无限函数
root.mainloop()

import tkinter as tk

def infinite_function():
    # 无限函数的逻辑
    root.after(1000, infinite_function)  # 每隔一秒继续执行

def stop_infinite_function():
    root.after_cancel(timer_id)  # 取消定时器，停止函数的执行

root = tk.Tk()

timer_id = root.after(1000, infinite_function)  # 开始执行无限函数

stop_button = tk.Button(root, text="停止函数", command=stop_infinite_function)
stop_button.pack()

root.mainloop()