title: Return value using button
body: <p>I'm trying to return a value using a button, but i just can't get it to work. What i want is the button to return a value which later on can be used to check is the function was used or not. The code that I'm using is the following:</p>
  
  <pre><code>from Tkinter import *
  master = Tk()
  master.geometry("200x100")
  def bla():
      return 1
  Button(master, command = bla, text = 'OK').pack()
  
  if bla == 1:
      print('1')
  
  mainloop()
  </code></pre>
  
  <p>I've also tried to do this using lambda but i could not figure that one out too.</p>