Examine my code, please?

# Notepad 2
# Acts like Notepad
# 7/28/04

from Tkinter import *

class Application(Frame):
    """ GUI application which counts button clicks. """
    def __init__(self, master):
        """ Initialize the frame. """
        Frame.__init__(self, master)
        self.grid()
        self.create_widget()
        self.open_file()
        self.save_count = int("1")

    def create_widget(self):
        """ create the button and status """
        self.lbl = Label(self, text = "Unsaved")
        self.lbl.grid(row = 0, col = 0)
        self.bttn = Button(self)
        self.bttn["text"] = "Save File"
        self.bttn["command"] = self.save_file
        self.bttn.grid(row = 0, col = 1)
        self.lbl2 = Label(self, text = "Editing file 'test.txt'")
        self.lbl2.grid(row = 3, col = 0, columnspan = 2)

    def open_file(self):
        """ open the file for writing and reading """
        self.text_file = open("test.txt", "r")
        self.whole_thing = self.text_file.read()
        self.user_txt = Text(self, width = 50, height = 30, wrap = WORD)
        self.user_txt.grid(row = 2, col = 0, columnspan = 2, sticky = W)
        self.user_txt.delete(0.0, END)
        self.user_txt.insert(0.0, self.whole_thing)
        print self.whole_thing

    def save_file(self):
        """ update the button count on click """
        contents = self.user_txt.get(0.0, END)
        self.new_file = open("test.txt", "w")
        self.new_file.write(contents)
        self.lbl["text"] = "File Saved", str(self.save_count)
        self.save_count += 1
        print "File saved."

# main
root = Tk()
root.title("Button Test")
root.geometry("400x500")

app = Application(root)

root.mainloop()

def deleteWindow():
    .....
    root.destroy() 

import ScrolledText
myTextBox = ScrolledText.ScrolledText( ....every thing as Text widget...)