set_memory_task

from Tkinter import *
import random

display_me = ["hello" , "goodbye", "welcome", "post" , "butt", "shredder", "fish", "iran", "colombia", "tennessee", "whiskey"]
displayed = []

counter = 0 
def set_memory(label):
  def set_mem():
    if (len(display_me) == 0) | (counter == 5):
        return


    global counter
    counter += 1
    
    word = random.choice(display_me)
    display_me.remove(word)
    
    displayed.append(word)
    
    print "displayed array is %s\n" % displayed
    var = StringVar()
    var.set(word)
    label.config(textvariable=var)
    label.after(1000, set_mem)

  set_mem()
 
 
root = Tk()
root.title("MRI Task 1")
label = Label(root, background="black", foreground="white")
label.pack()
set_memory(label)
button = Button(root, text='Stop', width=25, command=root.destroy)
button.pack()
root.mainloop()