length_match.py

def inches_to_centimeters(inches):
    return inches * 2.54

def centimeters_to_inches(centimeters):
    return centimeters / 2.54

def feet_to_meters(feet):
    return feet * 0.3048

def meters_to_feet(meters):
    return meters / 0.3048

def length():
    print("\n" + "="*50)
    print(" Length Conversions ".center(50, "="))
    print("="*50)
    print("[1] Inches to Centimeters")
    print("[2] Centimeters to Inches")
    print("[3] Feet to Meters")
    print("[4] Meters to Feet")
    print("[5] Return to Main Menu")
    print("="*50)

def length_inches_cm():
    while True:
        try:
            print("\n" + "="*50)
            length_select = input("Enter an option (1-5): \n-- ")
            print("="*50)

            if not length_select.isdigit():
                print("="*50)
                print("# INVALID INPUT! Please enter a numeric value. #")
                print("="*50)
                continue  

            length_select = int(length_select)

            match length_select:
                case 1:  
                    while True:
                        inch_to_cm = input("\n[Inches to Centimeters Conversion]\nEnter Inch/es: ")

                        if not inch_to_cm.replace(".", "", 1).isdigit():
                            print("="*50)
                            print("# INVALID INPUT! Please enter a numeric value. #")
                            print("="*50)
                            continue  

                        inch_to_cm = float(inch_to_cm)
                        print(f"{inch_to_cm} Inch/es is {inches_to_centimeters(inch_to_cm):.2f} Centimeter/s!")

                        while True:
                            back = input("\n[1] Choose another option \n[2] Stay \n[3] Return to Main Menu\n-- ")

                            if back.isdigit():
                                back = int(back)
                                if back == 1:
                                    return  
                                elif back == 2:
                                    break  
                                elif back == 3:
                                    print("\nReturning to Main menu...")
                                    return "RETURN_MAIN"  
                            else:
                                print("="*50)
                                print("# Invalid entry, Please choose 1, 2, or 3. #")
                                print("="*50)

                case 2:  
                    while True:
                        cm_to_inch = input("\n[Centimeters to Inches Conversion]\nEnter Centimeter/s: ")

                        if not cm_to_inch.replace(".", "", 1).isdigit():
                            print("="*50)
                            print("# INVALID INPUT! Please enter a numeric value. #")
                            print("="*50)
                            continue  

                        cm_to_inch = float(cm_to_inch)
                        print(f"{cm_to_inch} Centimeter/s is {centimeters_to_inches(cm_to_inch):.2f} Inch/es!")

                        while True:
                            back = input("\n[1] Choose another option \n[2] Stay \n[3] Return to Main Menu\n-- ")

                            if back.isdigit():
                                back = int(back)
                                if back == 1:
                                    return  
                                elif back == 2:
                                    break
                                elif back == 3:
                                    print("\nReturning to Main menu...")
                                    return "RETURN_MAIN"  
                            else:
                                print("="*50)
                                print("# Invalid entry, Please choose 1, 2, or 3. #")
                                print("="*50)

                case 3:  
                    while True:
                        ft_to_m = input("\n[Feet to Meters Conversion]\nEnter Feet: ")

                        if not ft_to_m.replace(".", "", 1).isdigit():
                            print("="*50)
                            print("# INVALID INPUT! Please enter a numeric value. #")
                            print("="*50)
                            continue  

                        ft_to_m = float(ft_to_m)
                        print(f"{ft_to_m} Feet is {feet_to_meters(ft_to_m):.2f} Meter/s!")

                        while True:
                            back = input("\n[1] Choose another option \n[2] Stay \n[3] Return to Main Menu\n-- ")

                            if back.isdigit():
                                back = int(back)
                                if back == 1:
                                    return  
                                elif back == 2:
                                    break  
                                elif back == 3:
                                    print("\nReturning to Main menu...")
                                    return "RETURN_MAIN"  
                            else:
                                print("="*50)
                                print("# Invalid entry, Please choose 1, 2, or 3. #")
                                print("="*50)

                case 4:  
                    while True:
                        m_to_ft = input("\n[Meters to Feet Conversion]\nEnter Meter/s: ")

                        if not m_to_ft.replace(".", "", 1).isdigit():
                            print("="*50)
                            print("# INVALID INPUT! Please enter a numeric value. #")
                            print("="*50)
                            continue  

                        m_to_ft = float(m_to_ft)
                        print(f"{m_to_ft} Meter/s is {meters_to_feet(m_to_ft):.2f} Feet!")

                        while True:
                            back = input("\n[1] Choose another option \n[2] Stay \n[3] Return to Main Menu\n-- ")

                            if back.isdigit():
                                back = int(back)
                                if back == 1:
                                    return  
                                elif back == 2:
                                    break  
                                elif back == 3:
                                    print("\nReturning to Main menu...")
                                    return "RETURN_MAIN"  
                            else:
                                print("="*50)
                                print("# Invalid entry, Please choose 1, 2, or 3. #")
                                print("="*50)

                case 5:  
                    print("\nReturning to main menu...")
                    return "RETURN_MAIN"

                case _:  
                    print("="*50)
                    print("# Enter a valid selection (1-5) #")
                    print("="*50)

        except ValueError:
            print("="*50)
            print(" INVALID INPUT! Enter a numeric value only. ")
            print("="*50)