from tkinter import Tk, Frame, Menu class Example(Frame): def __init__(self): super().__init__() self.initUI() def initUI(self): self.master.title("Submenu") menubar = Menu(self.master) self.master.config(menu=menubar) fileMenu = Menu(menubar) submenu = Menu(fileMenu) submenu.add_command(label="New feed") submenu.add_command(label="Bookmarks") submenu.add_command(label="Mail") fileMenu.add_cascade(label='Import', menu=submenu, underline=0) fileMenu.add_separator() fileMenu.add_command(label="Exit", underline=0, command=self.onExit) menubar.add_cascade(label="File", underline=0, menu=fileMenu) def onExit(self): self.quit() def main(): root = Tk() root.geometry("250x150+300+300") app = Example() root.mainloop() if __name__ == '__main__': main()