# -*- coding: utf-8 -*-
import tkinter as tk
root = tk.Tk()
root.title("tk28.py")
root.geometry("200x100")
#####################################
menubar = tk.Menu(root)

menu_file = tk.Menu(menubar, tearoff = 0)
menu_file.add_command(label = 'Open')
menu_file.add_command(label = 'Save')
menu_file.add_separator()
menu_file.add_command(label = 'Close')
menubar.add_cascade(label = 'File', menu = menu_file)

menu_edit = tk.Menu(menubar, tearoff = 0)
##
submenu = tk.Menu(menu_edit, tearoff = 0)
submenu.add_command(label = 'Cut')
submenu.add_command(label = 'Copy')
submenu.add_command(label = 'Paste')
menu_edit.add_cascade(label = 'Operation', menu = submenu)
##
menu_edit.add_command(label = 'Search')
menubar.add_cascade(label = "Edit", menu = menu_edit)

root.config(menu = menubar)
#####################################
root.mainloop()