A menu handler for console applications implemented using decorators in python3

console_menu.py

class ConsoleMenu ():
    options = []
    question = ""
    prompt = "Enter a selection: "
 
    def __init__ (self, question: str, prompt: str = prompt):
        self.question = question
        self.prompt = prompt
 
    def option (self, option: str):
        def wrapper (function):
            self.options.append([ option, function ])
        return wrapper
 
    def run (self, initial_input = False):
        if (initial_input == False):
            initial_input = input(self.question)
 
        n_options = len(self.options)
        for i in range(n_options):
            print(f"{i + 1}. {self.options[i][0]}")
 
        user_input = int(input(self.prompt))
        if (not (user_input in range(0, n_options + 1))):
            print("Input out of range!")
            return self.run(initial_input)
        self.options[user_input - 1][1](initial_input)

if __name__ == "__main__":
    menu = ConsoleMenu("Enter a measurement in feet: ")
    
    @menu.option("Convert to inches")
    def convertToInches (user_input: int):
        result = int(user_input) * 12
        print(f"{result:.5f} inches")

    @menu.option("Convert to yards")
    def convertToYards (user_input: int):
        result = int(user_input) / 3
        print(f"{result:.5f} yards")

    @menu.option("Convert to miles")
    def convertToMiles (user_input: int):
        result = int(user_input) / 5280
        print(f"{result:.5f} miles")

    @menu.option("Convert to millimetres")
    def convertToMillimetres (user_input: int):
        result = int(user_input) * 304.8
        print(f"{result:.5f} mm")

    @menu.option("Convert to centimetres")
    def convertToCentimetres (user_input: int):
        result = int(user_input) * 30.48
        print(f"{result:.5f} cm")

    @menu.option("Convert to metres")
    def convertToMetres (user_input: int):
        result = int(user_input) * 0.3048
        print(f"{result:.5f} m")

    @menu.option("Convert to kilometres")
    def convertToKilometres (user_input: int):
        result = int(user_input) * 0.0003048
        print(f"{result:.5f} km")

    menu.run()