title: How can i use a matrix in tkinter
body: <p>I need use a matrix in python using tkinter, this my code:</p>
  
  <pre><code>from tkinter import *
  V=Tk()
  a=IntVar()
  b=IntVar()
  c=IntVar()
  
  a1=IntVar()
  b1=IntVar()
  c1=IntVar()
  
  a2=IntVar()
  b2=IntVar()
  c2=IntVar()
  
  a.set(5)
  b.set(8)
  c.set(10)
  
  
  a1.set(5)
  b1.set(8)
  c1.set(10)
  
  matriz=[
      [a,b,c],
      [a1,b1,c1],
      [a2,b2,c2],
      ]
  
  for x in range(3):
      matriz[2][x].set (matriz[0][x]-matriz[1][x])
  </code></pre>
  
  <p>How i can set the variables a2,b2,b3 using a matrix and add the variables to a labels in the frame</p>