tkinter 自定义事件

import tkinter as tk

def btnClick():
    root.event_generate("<>")



def myEventFun(event):
    global n
    n+=1
    label['text']=str(n)


root=tk.Tk()
root.geometry("500x400+100+30")

root.bind("<>",myEventFun)
n=0
label=tk.Label(root,fg='red',font=("Arial",15))
label.place(x=20,y=10,width=20,height=40)

button=tk.Button(root,command=btnClick,text='send')
button.place(x=95,y=60,width=100,height=50)




root.mainloop()