title: tkinter: display time in a windows
body: <p>I am starting with GUI in python with tkinter and I want to display current time as HH:MM:SS in the center of my windows (with big digits if possible). This is the app code: a basic full screen windows with a background picture.</p>
  <pre><code>import Tkinter as tk
  from Tkinter import Tk, Frame, BOTH
  import Tkinter
  from PIL import Image, ImageTk
  root = tk.Tk()
  root.attributes('-fullscreen', 1)
  im = Image.open('spring.png')
  tkimage = ImageTk.PhotoImage(im)
  myvar=Tkinter.Label(root,image = tkimage)
  myvar.place(x=0, y=0, relwidth=1, relheight=1)
  root.mainloop()
  </code></pre>
  <p><strong>Edit:</strong> By current time I mean to keep updating the time as a clock.</p>