def paused pause stop pause running update screen return true return master animations menu menu bar def screen update screen def newwindow clear ( running stop true add_command ,command=newwindow add_command ,commands add_cascade ,menuf menub canvas width = pack left wt et ht speed screen et getscreen screen frame padx pady pack right both speed pack speed =speed pack speed def running true clear ( , , , screen master animation seq range stopping return point screen green seq append this copy belongs to 'acha