lesson12.py

from tkinter import * 
from tkinter import ttk
import tkinter

root = Tk()

root.title("Tkinter")
root.geometry("500x500")

menubar = Menu(root)

file = Menu(menubar, tearoff = 0)
menubar.add_cascade(label ='File', menu = file)
file.add_command(label ='New File', command = None)
file.add_command(label ='Open...', command = None)
file.add_command(label ='Save', command = None)
file.add_separator()
file.add_command(label ='Exit', command = root.destroy)

edit = Menu(menubar, tearoff = 0)
menubar.add_cascade(label ='Edit', menu = edit)
edit.add_command(label ='Cut', command = None)
edit.add_command(label ='Copy', command = None)
edit.add_command(label ='Paste', command = None)
edit.add_command(label ='Select All', command = None)
edit.add_separator()
edit.add_command(label ='Find...', command = None)
edit.add_command(label ='Find again', command = None)

help_ = Menu(menubar, tearoff = 0)
menubar.add_cascade(label ='Help', menu = help_)
help_.add_command(label ='Tk Help', command = None)
help_.add_command(label ='Demo', command = None)
help_.add_separator()
help_.add_command(label ='About Tk', command = None)

root.config(menu = menubar)

root.mainloop()