measurement_converter.py

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

def celsius_to_fahrenheit(celsius):
    return celsius * 9/5 + 32

def inches_to_centimeters(inches):
    return inches * 2.54

def centimeters_to_inches(centimeters):
    return centimeters / 2.54

def main():
    print("Welcome to the Unit Converter!")
    print("1. Fahrenheit to Celsius")
    print("2. Celsius to Fahrenheit")
    print("3. Inches to Centimeters")
    print("4. Centimeters to Inches")
    choice = input("Enter your choice (1/2/3/4): ")

    if choice == '1':
        f = float(input("Enter temperature in Fahrenheit: "))
        print("Temperature in Celsius:", fahrenheit_to_celsius(f))
    elif choice == '2':
        c = float(input("Enter temperature in Celsius: "))
        print("Temperature in Fahrenheit:", celsius_to_fahrenheit(c))
    elif choice == '3':
        inches = float(input("Enter length in inches: "))
        print("Length in centimeters:", inches_to_centimeters(inches))
    elif choice == '4':
        cm = float(input("Enter length in centimeters: "))
        print("Length in inches:", centimeters_to_inches(cm))
    else:
        print("Invalid choice. Please choose 1, 2, 3, or 4.")

if __name__ == "__main__":
    main()