<filename>TK.py<gh_stars>0
import tkinter as tk
window=tk.Tk()
window.title("my window")
window.geometry('400x400')
var=tk.StringVar()
l=tk.Label(window,textvariable=var,bg='green',font=('Arial',12),
           width=15)
l.pack()
on_hit=False
def hit_me():
    global on_hit
    if on_hit==False:
        on_hit=True
        var.set('you hit me')
    else:
        on_hit=False
        var.set('')
b=tk.Button(window,text='hit me',width=15,
            height=2,command=hit_me)
b.pack()
window.mainloop()

<filename>TK.py<gh_stars>0
import tkinter as tk
window=tk.Tk()
window.title("my window")
window.geometry('400x400')
var=tk.StringVar()
l=tk.Label(window,textvariable=var,bg='green',font=('Arial',12),
           width=15)
l.pack()
on_hit=False
def hit_me():
    global on_hit
    if on_hit==False:
        on_hit=True
        var.set('you hit me')
    else:
        on_hit=False
        var.set('')
b=tk.Button(window,text='hit me',width=15,
            height=2,command=hit_me)
b.pack()
window.mainloop()
