app.py

import streamlit as st

# Title
st.set_page_config(page_title="Calculator", page_icon="🧮")
st.title("🧮 Simple Calculator")

# Inputs
num1 = st.number_input("Enter first number", value=0.0)
num2 = st.number_input("Enter second number", value=0.0)

# Operation selection
operation = st.selectbox(
    "Select operation",
    ("Addition (+)", "Subtraction (-)", "Multiplication (*)", "Division (/)")
)

# Button
if st.button("Calculate"):
    if operation == "Addition (+)":
        result = num1 + num2
    elif operation == "Subtraction (-)":
        result = num1 - num2
    elif operation == "Multiplication (*)":
        result = num1 * num2
    elif operation == "Division (/)":
        if num2 != 0:
            result = num1 / num2
        else:
            st.error("❌ Cannot divide by zero")
            result = None

    if result is not None:
        st.success(f"✅ Result: {result}")

# Footer
st.markdown("---")
st.write("Made with ❤️ using Streamlit")