title: Graphical user interface with TK - button position and actions
body: <p>I started using TK in python to build a graphical interface for my program. 
  I'm not able to fix 2 issues concerning (1) the position of a button in the window and (2) use a value of a radiobutton inside a fucntion.</p>
  
  <p>This is my current code:</p>
  
  <pre><code>root = tk.Tk()
  root.title("START")
  root.geometry("500x200+500+200")
  
  v = tk.IntVar()
  v.set(0)  # initializing the choice
  
  my_choise = [
  ("Basic",1),
  ("Advanced",2),
  ('Extreme',3)
  ]
  
  def ShowChoice():
      print(v.get())
  
  tk.Label(root, 
       text="""Choose your configuration:""",
       justify = tk.LEFT,
       padx = 20).pack()
  
  val = 0
  for val, choise in enumerate(my_choise):
      tk.Radiobutton(root,text=choise,padx = 20,variable=v,command=ShowChoice,value=val).pack(anchor=tk.W)
  
  
  def star_program(value):
      os.system("ifconfig")
  
  def open_comments_file():
      os.system("gedit /home/user/Desktop/comments.txt")
  
  def open_links_file():
      os.system("gedit /home/user/Desktop/links.txt")
  
  frame = tk.Frame(root)
  frame.pack()
  
  open_file_c = tk.Button(frame, 
                 text="Comments",
                 command=open_comments_file)
  
  open_file_f = tk.Button(frame, 
                 text="Links",
                 command=open_links_file)
  
  button = tk.Button(frame, 
                 text="Start",
                 command=star_program(v.get()))
  
  button.pack(side=tk.LEFT)
  open_file_f.pack(side=tk.LEFT)
  open_file_c.pack(side=tk.LEFT)
  
  slogan = tk.Button(frame,
                 text="Cancel",
                 command=quit)
  slogan.pack(side=tk.LEFT)
  
  root.mainloop()
  </code></pre>
  
  <p>I would like that the buttons "Links" and "Comments" were positioned below the radiobutton, one below the other. Now, all buttons are in line, but I would like to have "start" and "cancel" at the bottom of my window.</p>
  
  <p>Then I tried to use the value of the radiobutton (choice) inside the star_program function. It does not work. My idea is, based on the choice selected in the radiobutton, perform different actions when I click the button "start":</p>
  
  <pre><code>    def star_program(value):
          if value == 0:
              os.system("ifconfig")
          else:
              print "Goodbye"
  </code></pre>
  
  <p>In addition, concerning "start" button, I have a strange behavior. The program runs "ifconfig" command also if I don't click on "start". And If I click "start" it does not perform any action.</p>
  
  <p>Any suggestion? 
  Thanks!!!</p>