app.py

import streamlit as st

# Temperature conversion functions
def celsius_to_fahrenheit(celsius):
    return (celsius * 9/5) + 32

def celsius_to_kelvin(celsius):
    return celsius + 273.15

def fahrenheit_to_celsius(fahrenheit):
    return (fahrenheit - 32) * 5/9

def fahrenheit_to_kelvin(fahrenheit):
    return fahrenheit_to_celsius(fahrenheit) + 273.15

def kelvin_to_celsius(kelvin):
    return kelvin - 273.15

def kelvin_to_fahrenheit(kelvin):
    return celsius_to_fahrenheit(kelvin_to_celsius(kelvin))

# Streamlit app
st.title("Temperature Converter 🌡️")
st.subheader("Convert temperatures between Celsius, Fahrenheit, and Kelvin")

# Input for temperature and unit
temperature = st.number_input("Enter the temperature:", value=0.0)
unit = st.selectbox("Select the unit of the input temperature:", ["Celsius", "Fahrenheit", "Kelvin"])

# Conversion logic
if st.button("Convert"):
    if unit == "Celsius":
        fahrenheit = celsius_to_fahrenheit(temperature)
        kelvin = celsius_to_kelvin(temperature)
        st.write(f"**Fahrenheit:** {fahrenheit:.2f}°F")
        st.write(f"**Kelvin:** {kelvin:.2f} K")
    elif unit == "Fahrenheit":
        celsius = fahrenheit_to_celsius(temperature)
        kelvin = fahrenheit_to_kelvin(temperature)
        st.write(f"**Celsius:** {celsius:.2f}°C")
        st.write(f"**Kelvin:** {kelvin:.2f} K")
    elif unit == "Kelvin":
        celsius = kelvin_to_celsius(temperature)
        fahrenheit = kelvin_to_fahrenheit(temperature)
        st.write(f"**Celsius:** {celsius:.2f}°C")
        st.write(f"**Fahrenheit:** {fahrenheit:.2f}°F")

st.write("Note: Ensure the input values are within valid ranges for temperature conversions.")