src/streamlit_app.py

import streamlit as st

st.set_page_config(page_title="Temperature Converter", page_icon="🌡️")

st.title("🌡️ Temperature Converter")

# Input
temp = st.number_input("Enter temperature value:", value=0.0)

# Unit selection
unit_from = st.selectbox("From:", ["Celsius", "Fahrenheit", "Kelvin"])
unit_to = st.selectbox("To:", ["Celsius", "Fahrenheit", "Kelvin"])

# Conversion function
def convert_temperature(value, from_unit, to_unit):
    # Convert input to Celsius first
    if from_unit == "Celsius":
        c = value
    elif from_unit == "Fahrenheit":
        c = (value - 32) * 5/9
    elif from_unit == "Kelvin":
        c = value - 273.15

    # Convert Celsius to target
    if to_unit == "Celsius":
        return c
    elif to_unit == "Fahrenheit":
        return (c * 9/5) + 32
    elif to_unit == "Kelvin":
        return c + 273.15

# Button
if st.button("Convert"):
    result = convert_temperature(temp, unit_from, unit_to)
    st.success(f"{temp} {unit_from} = {result:.2f} {unit_to}")