[Tkinter] Using Tkinter to calculate while formula

[deanhystad]

Tkinter does not process events unless it is running imainloop(). You are blocking mainloop when you do this:

    while run == True:
        stroke_count += stroke_rate
        sleep(1)

If you want your tkinter program to do something every second you should look at .after()

And this is bad:

    lb2 = Label(root, print(str(stroke_count) +' stk'))
    lb2.grid(row=3, column=0)

Update the label text. Don't make another label.