title: Tkinter on Pydev Eclipse doesn't work
body: <p>I tried to use Tkinter on eclipse, and it works for short codes such as this one:</p>
  
  <pre><code>from tkinter import *
  
  root = Tk()
  mainloop()
  </code></pre>
  
  <p>This code works on eclipse, but this one doesn't:</p>
  
  <pre><code>from tkinter import Tk, Canvas, HIDDEN, NORMAL
  
  root = Tk()
  root.title('Snap')
  
  c = Canvas(root, width=400, height=400)
  
  shapes = []
  circle = c.create_oval(35, 20, 365, 350, outline='black', fill='black',
                         state=HIDDEN)
  shapes.append(circle)
  circle = c.create_oval(35, 20, 365, 350, outline='red', fill='red',
                         state=HIDDEN)
  shapes.append(circle)
  circle = c.create_oval(35, 20, 365, 350, outline='green', fill='green',
                         state=HIDDEN)
  shapes.append(circle)
  circle = c.create_oval(35, 20, 365, 350, outline='blue', fill='blue',
                         state=NORMAL)
  shapes.append(circle)
  c.pack()
  </code></pre>
  
  <p>This code should make a window appear and have a blue circle on it, but I tried running it but nothing happened.</p>