from tkinter import *


class Window(Frame):
	def __init__(self, master=None):
		Frame.__init__(self, master)
		self.master = master

		menu = Menu(self.master)
		self.master.config(menu=menu)

		fileMenu = Menu(menu)
		fileMenu.add_command(label="Item")
		fileMenu.add_command(label="Exit", command=self.exitProgram)
		menu.add_cascade(label="File", menu=fileMenu)

		editMenu = Menu(menu)
		editMenu.add_command(label="Undo")
		editMenu.add_command(label="Redo")
		menu.add_cascade(label="Edit", menu=editMenu)

	def exitProgram(self):
		exit()


root = Tk()
app = Window(root)
root.wm_title("Tkinter window")
root.mainloop()