![](https://csdnimg.cn/release/download_crawler_static/89359274/bg1.jpg)
import tkinter as tk
# on_hit=False
window = tk.Tk()
window.title('实践练习')
window.geometry("600x400")
var=tk.StringVar()
i=tk.Label(window,textvariable=var,bg='green',font=('Arial',12))#bg
背景font字体
i.pack()
def hit():
global on_hit
if on_hit==False:
on_hit=True
var.set("OMG!")
else:
on_hit=False
var.set('')
b=tk.Button(window,text="hit me",command=hit)
b.pack()
def insecrt_point():