text: import tkinter
  
  #main frame
  root = tkinter.Tk()
  root.geometry('400x400+3200+100')
  root.wm_title('meu primeiro programa')
  
  #list box #frame
  
  commentsFrame = tkinter.LabelFrame(root, text='comentarios')
  commentsFrame.place(relwidth=1, relheight=0.5)
  
  commentsList = tkinter.Listbox(commentsFrame)
  commentsList
  #start app
  root.mainloop()
  
  