Python\Tkinter ScrolledText

from tkinter import * 
  from tkinter.ttk import * 
  from tkinter.scrolledtext import * 
   
  root = Tk() 
  writingPad = ScrolledText(root, width = 200, height = 160) 
   
  def openFile(): 
      file = askopenfile(parent=root, mode = 'rb', title = "Bi dosya seç") 
      if file != None: 
          peppermint = file.read() 
          textPad.inster('1.0', peppermint) 
          file.close() 
   
  def saveFile(self): 
      file = asksaveasfile(mode = 'w') 
      if file != None: 
          data = self.textPad.get('1.0', END+'-1c') 
          file.write(data) 
          file.close() 
   
  def exitCommand(): 
      if askokcancel("Çıkış", "Cidden çıkcan mı?"): 
          root.destroy() 
   
   
  def doNothing(): 
      pass 
   
  class Application: 
      def widgets(self): 
          self.menu = Menu(root) 
          root.config(menu = menu) 
          self.dosya = Menu(menu, tearoff=0) 
          self.menu.add_cascade(label = 'Dosya', menu=dosya) 
          self.dosya.add_command(label = 'Yeni', command = doNothing) 
          self.dosya.add_command(label='Aç', command = openFile) 
          self.dosya.add_command(label = 'Kaydet', command = saveFile) 
   
      def __init__(self): 
          self.widgets() 
           
  mainloop()