Step 1: Import Tkinter
import tkinter as tk
from tkinter import messageboxStep 2: Create the Main Window
root = tk.Tk()
root.title("Multiple Menu Example")
root.geometry("400x300")Step 3: Create the Menu Bar
menubar = tk.Menu(root)Step 4: Create Main Menus (e.g., File, Edit, Help)
# File Menu
file_menu = tk.Menu(menubar, tearoff=0)
file_menu.add_command(label="New", command=lambda: messagebox.showinfo("New", "Create a new file"))
file_menu.add_command(label="Open", command=lambda: messagebox.showinfo("Open", "Open a file"))
file_menu.add_separator()
file_menu.add_command(label="Exit", command=root.quit)Step 5: Add Another Menu (Edit, Help, etc.)
# Edit Menu
edit_menu = tk.Menu(menubar, tearoff=0)
edit_menu.add_command(label="Undo", command=lambda: messagebox.showinfo("Undo", "Undo action"))
edit_menu.add_command(label="Redo", command=lambda: messagebox.showinfo("Redo", "Redo action"))
# Help Menu
help_menu = tk.Menu(menubar, tearoff=0)
help_menu.add_command(label="About", command=lambda: messagebox.showinfo("About", "This is a Tkinter menu demo"))Step 6: Add Menus to the Menu Bar
menubar.add_cascade(label="File", menu=file_menu)
menubar.add_cascade(label="Edit", menu=edit_menu)
menubar.add_cascade(label="Help", menu=help_menu)Step 7: Configure the Menu Bar in the Main Window
root.config(menu=menubar)Step 8: Run the App
root.mainloop()Step 9: Complete Code
import tkinter as tk
from tkinter import messagebox
root = tk.Tk()
root.title("Multiple Menu Example")
root.geometry("400x300")
menubar = tk.Menu(root)
# File Menu
file_menu = tk.Menu(menubar, tearoff=0)
file_menu.add_command(label="New", command=lambda: messagebox.showinfo("New", "Create a new file"))
file_menu.add_command(label="Open", command=lambda: messagebox.showinfo("Open", "Open a file"))
file_menu.add_separator()
file_menu.add_command(label="Exit", command=root.quit)
menubar.add_cascade(label="File", menu=file_menu)
# Edit Menu
edit_menu = tk.Menu(menubar, tearoff=0)
edit_menu.add_command(label="Undo", command=lambda: messagebox.showinfo("Undo", "Undo action"))
edit_menu.add_command(label="Redo", command=lambda: messagebox.showinfo("Redo", "Redo action"))
menubar.add_cascade(label="Edit", menu=edit_menu)
# Help Menu
help_menu = tk.Menu(menubar, tearoff=0)
help_menu.add_command(label="About", command=lambda: messagebox.showinfo("About", "This is a Tkinter menu demo"))
menubar.add_cascade(label="Help", menu=help_menu)
root.config(menu=menubar)
root.mainloop()