循环由Tkinter按钮触发，由anoth结束

Question

下面的代码将显示一个小的Tkinter用户界面，但是我的按钮不会触发名为copy\u loop的循环。我已经试了好几个小时了，想不出怎么解决这个问题。任何帮助都将不胜感激。你知道吗

import tkinter as tk
import threading

class App():
    def __init__(self, master):
        self.isrunning = False

        self.button1 = tk.Button(main, text='start')
        self.button1.bind = ("<Button-1>", self.startrunning)
        self.button1.pack()

        self.button2 = tk.Button(main, text='stop')
        self.button2.bind = ("<Button-1>", self.stoprunning)
        self.button2.pack()

    def startrunning(self, event):
        self.isrunning = True
        t = threading.Thread(target=self.copy_loop)
        t.start()

    def stoprunning(self, event):
        self.isrunning = False

    def copy_loop(self):
        while self.isrunning:
            print("Running...")

main = tk.Tk()
app = App(main)
main.mainloop()

Answer 1

在不应该有等号的地方有个等号。命令应为：

self.button1 = tk.Button(main, text='start')
self.button1.bind("<Button-1>", self.startrunning)

或者更整洁：

self.button1 = tk.Button(main, text='start', command=self.startrunning)

方法签名应该有event=None：

def startrunning(self, event=None):

或者更灵活：

def startrunning(self, *args):

Answer 2

bind是函数，不是属性。您拥有：

self.button1.bind = ("<Button-1>", self.startrunning)

实际上，您正在覆盖实例上的bind函数。它现在是一个元组。你知道吗

相反，请执行以下操作：

self.button1.bind("<Button-1>", self.startrunning)

同样的button2。你知道吗