Code:-

from tkinter import * 
from tkinter.ttk import * 
from time import strftime 
root = Tk() 
root.title('Menu Demonstration') 
root.geometry("500x200")
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_command(label ='Recent Files', 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) 
mainloop()

Output:-