from tkinter import * class EmptyFrame: def __init__(self, window): frame = Frame(window, width=1000, height=600) frame.pack() one = Label(frame, text="One", bg="red") one.pack(fill=X) two = Label(frame, text="Two", bg="blue") two.pack() class TopMenu: def __init__(self, window): menu = Menu(window) window.config(menu=menu) ModeSelector = Menu(menu) menu.add_cascade(label="Mode", menu=ModeSelector) ModeSelector.add_command(label="Full Manual", command=self.manual_mode(window)) def manual_mode(self, window): print("Switching to manual mode") window.delete(ALL)