streamlit_app.py

import streamlit as st
from calculator import add, subtract, multiply, divide

st.title("Calculator App")

operation = st.selectbox("Select operation:", ["Add", "Subtract", "Multiply", "Divide"])
x = st.number_input("Enter first number:", value=0)
y = st.number_input("Enter second number:", value=0)

if st.button("Calculate"):
    if operation == "Add":
        result = add(x, y)
    elif operation == "Subtract":
        result = subtract(x, y)
    elif operation == "Multiply":
        result = multiply(x, y)
    elif operation == "Divide":
        result = divide(x, y)
    st.write(f"The result is: {result}")