import tkinter as tk

from tkinter import messagebox

from datetime import datetime

# Function to calculate age

def calculate_age():

try:

year = int(entry_year.get())

month = int(entry_month.get())

day = int(entry_day.get())

today = datetime.today()

birth_date = datetime(year, month, day)

age = today.year - birth_date.year - ((today.month, today.day) < (birth_date.month, birth_date.day))

messagebox.showinfo("Age Calculator", f"Hello, {entry_name.get()}!\nYou are {age} years old.")

except ValueError:

messagebox.showerror("Input Error", "Please enter valid numerical values for year, month, and day.")

# Setting up the GUI

root = tk.Tk()

root.title("Age Calculator")

# Labels

label_name = tk.Label(root, text="Name:")

label_name.grid(row=0, column=0, padx=10, pady=10)

label_year = tk.Label(root, text="Year of Birth:")

label_year.grid(row=1, column=0, padx=10, pady=10)

label_month = tk.Label(root, text="Month of Birth:")

label_month.grid(row=2, column=0, padx=10, pady=10)

label_day = tk.Label(root, text="Day of Birth:")

label_day.grid(row=3, column=0, padx=10, pady=10)

# Entry widgets

entry_name = tk.Entry(root)

entry_name.grid(row=0, column=1, padx=10, pady=10)

entry_year = tk.Entry(root)

entry_year.grid(row=1, column=1, padx=10, pady=10)

entry_month = tk.Entry(root)

entry_month.grid(row=2, column=1, padx=10, pady=10)

entry_day = tk.Entry(root)

entry_day.grid(row=3, column=1, padx=10, pady=10)

# Button to calculate age

button_calculate = tk.Button(root, text="Calculate Age", command=calculate_age)

button_calculate.grid(row=4, column=0, columnspan=2, pady=20)

# Run the GUI

root.mainloop()