Python GUI Program to Calculate Age Certainly! Below is a Python program using the tkinter library to create a simple GUI that accepts a date of birth and calculates the age. import tkinter as tk from tkinter import messagebox from datetime import datetime def calculate_age(): dob_str = entry_dob.get() try: dob = datetime.strptime(dob_str, "%Y-%m-%d") today = datetime.today() age = today.year - dob.year - ((today.month, today.day) < (dob.month, dob.day)) messagebox.showinfo("Age Calculator", f"Your age is: {age} years") except ValueError: messagebox.showerror("Error", "Please enter the date in YYYY-MM-DD format") # Create the main window root = tk.Tk() root.title("Age Calculator") # Create a labe...