Code Editor for app.py

import streamlit as st
import numpy as np

st.title('Simple Calculator')

# Create a form for input
with st.form(key='calc_form'):
    num1 = st.number_input('Enter the first number:', value=0.0)
    operation = st.selectbox('Select operation:', ['Add', 'Subtract', 'Multiply', 'Divide'])
    num2 = st.number_input('Enter the second number:', value=0.0)
    submit_button = st.form_submit_button(label='Calculate')

# Perform calculation
if submit_button:
    if operation == 'Add':
        result = np.add(num1, num2)
    elif operation == 'Subtract':
        result = np.subtract(num1, num2)
    elif operation == 'Multiply':
        result = np.multiply(num1, num2)
    elif operation == 'Divide':
        if num2 == 0:
            result = 'Error! Division by zero.'
        else:
            result = np.divide(num1, num2)
    st.write('Result:', result)