title: blank tkinter window when executing
body: <p>I'm coding a Tkinter, which much consist of a checkbox and File Menu containing Save Option.</p>
  
  <p>Problem:
  It comes in 2 tkinter instead of one. One is a blank GUI, and another consists of my checkbox, textbox, file and save.</p>
  
  <p>How to avoid the blank GUI?</p>
  
  <p>My code:</p>
  
  <pre><code>from Tkinter import *
  import Tkinter
  from tkFileDialog import askopenfile, asksaveasfile
  import tkFileDialog
  
  class myproject(Tkinter.Tk):
      def __init__(self,parent):
          Tkinter.Tk.__init__(self)
          self.textbox()
          self.checkbox2()
      def textbox(self):
          self.txt1 = Tkinter.Text(root, borderwidth=3, relief="sunken", height=4,width=55)
          self.txt1.config(font=("consolas", 12), undo=True, wrap='word')
          self.txt1.grid(row=0, column=1, sticky="nsew", padx=2, pady=2)
      def checkbox2(self): #self.checkbox
          checkbox = Tkinter.Checkbutton(root, text = " ")
          checkbox.grid(column=1,row=2)
  
  
      def file_save(self):
          f = asksaveasfile(mode='w', defaultextension=".txt")
  
  
  root = Tkinter.Tk()
  
  menubar = Menu(root)
  root.configure(menu=menubar)
  
  filemenu = Menu(menubar,tearoff=0)
  menubar.add_cascade(label="File", menu=filemenu)
  filemenu.add_command(label="Save", command=myproject.file_save)
  app = myproject(None)
  app.mainloop()
  </code></pre>