Age Calculator in Python with Source Code

Age Calculator in Python

Calculating your age might seem simple, but when done programmatically, it opens the door to learning some useful Python libraries and GUI development. Today, let’s walk through creating a simple age calculator using Python and Tkinter, with a professional and user-friendly touch.

• GUI programming using the Tkinter library.
• Working with date and time using Python’s datetime module.
• Enhancing problem-solving skills while making a functional program.

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The Complete Code

Here’s the code for our age calculator:

#importing modules
from tkinter import *
from datetime import date

# Creating the main window
root = Tk()
root.title("AGE-CALCULATOR")   # Setting up the title
root.configure(bg="#D5C6FF")   # Setting up background color
root.geometry("400x300")       # Fixing the size of the window

# Label for displaying results
new = Label(root, bg="#D5C6FF")
new.grid(row=5, column=0, columnspan=3)

# Getting today's date
today = str(date.today())
list_today = today.split("-")

# Function to calculate age
def age(b_date, b_month, b_year):
    global today
    global new
    new.grid_forget()
    b_date = int(entry_date.get())
    b_month = int(entry_month.get())
    b_year = int(entry_year.get())
    c_date = int(list_today[2])
    c_month = int(list_today[1])
    c_year = int(list_today[0])
    month = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
    if b_date > c_date:
        c_month -= 1
        c_date += month[b_month - 1]
    if b_month > c_month:
        c_year -= 1
        c_month += 12
    resultd = str(c_date - b_date)
    resultm = str(c_month - b_month)
    resulty = str(c_year - b_year)
    new = Label(root, text=f"YOUR AGE\n{resulty} YEARS {resultm} MONTHS {resultd} DAYS",
                fg="#990099", bg="#D5C6FF", borderwidth=6)
    new.config(font=("Arial Rounded MT Bold", 15))
    new.grid(row=5, column=0, columnspan=3)

# Function to clear input fields
def clean(entry_date, entry_month, entry_year):
    global new
    new.grid_forget()
    entry_date.delete(0, END)
    entry_month.delete(0, END)
    entry_year.delete(0, END)

# GUI widgets and layout
title_label = Label(root, text="AGE CALCULATOR", borderwidth=10, fg="#6600CC", bg="#D5C6FF")
title_label.config(font=("Broadway", 29))
title_label.grid(row=0, column=0, columnspan=3)

label_date = Label(root, text="BIRTH DATE:", borderwidth=4, fg="#990099", bg="#D5C6FF")
label_date.config(font=("Arial Rounded MT Bold", 15))
label_date.grid(row=1, column=0)

label_month = Label(root, text="BIRTH MONTH:", borderwidth=5, fg="#990099", bg="#D5C6FF")
label_month.config(font=("Arial Rounded MT Bold", 15))
label_month.grid(row=2, column=0)

label_year = Label(root, text="BIRTH YEAR:", borderwidth=9, fg="#990099", bg="#D5C6FF")
label_year.config(font=("Arial Rounded MT Bold", 15))
label_year.grid(row=3, column=0)

entry_date = Entry(root, width=20, borderwidth=3)
entry_month = Entry(root, width=20, borderwidth=3)
entry_year = Entry(root, width=20, borderwidth=3)

entry_date.grid(row=1, column=2)
entry_month.grid(row=2, column=2)
entry_year.grid(row=3, column=2)

submit = Button(root, text="GET AGE!!", width=10, anchor=CENTER, 
                command=lambda: age(entry_date, entry_month, entry_year), bg="#6600CC", fg="#D5C6FF", borderwidth=5)
submit.grid(row=4, column=0)

clear = Button(root, text="CLEAR", width=10, 
               command=lambda: clean(entry_date, entry_month, entry_year), bg="#6600CC", fg="#D5C6FF", borderwidth=5)
clear.grid(row=4, column=2)

root.mainloop()

How It Works

1. Modules:
   • tkinter for GUI elements.
   • datetime.date to fetch the current date.
2. UI Design:
   • A simple window with input fields for date, month, and year of birth.
   • Two buttons: GET AGE!! to calculate and CLEAR to reset inputs.
3. Logic:
   • Fetch the user’s input and the current date.
   • Compare the input date with the current date to compute the difference in years, months, and days.
   • Handle scenarios where the birth date or month exceeds the current date or month.

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Key Features

• User-friendly Interface: The application is designed with a clean, minimalistic layout.
• Error Handling: Ensures accurate calculations even when days and months exceed usual limits.
• Interactive and Fun: Instant results displayed with a vibrant and engaging design.

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Age Calculator in Python with Source Code