app.py

import streamlit as st
from datetime import datetime, date

st.set_page_config(page_title="Age Calculator", page_icon="🎂")
st.title("🎂 Age Calculator")
st.markdown("Enter your birthdate below to calculate your age:")

birthdate = st.date_input(
    "Select your birthdate",
    min_value=date(1900, 1, 1),
    max_value=date.today()
)

if st.button("Calculate Age"):
    today = date.today()
    age = today.year - birthdate.year - (
        (today.month, today.day) < (birthdate.month, birthdate.day)
    )
    st.success(f"Your age is: **{age}** years")