get_input

def get_input(question, *,
    input_type=str,
    choices_keys=None, choices_values=None,
    value_error_msg=None, choices_error_msg=None,
    encoding='utf8'):
    """
    To do...
    """
    while True:
        text = input(question + ': ')
        if choices_keys:
            text = text.strip().lower()
        if input_type is str and choices_keys and not text in choices_keys:
            if choices_error_msg:
                print(choices_error_msg, file=sys.stdout)
            continue
        try:
            if input_type is bytes:
                value = input_type(text, encoding=encoding)
            else:
                value = input_type(text)
        except ValueError:
            if value_error_msg:
                print(value_error_msg, file=sys.stdout)
        else:
            break
    if choices_keys:
        index = choices_keys.index(value)
        if choices_values:
            return choices_values[index]
        else:
            return index
    else:
        return value


square_meters = get_input('How big is your room in m²?', input_type=float)

apples = get_input('How many Apples have you eaten last year?', input_type=int)

choices = ('yes', 'no', 'maybe') # index of no == 0, index of yes == 1
choices_retvals = [True, False, ...]
execute = get_input(
    'Execute the program? [yes/no/maybe]',
    choices_keys=choices,
    choices_values=choices_retvals)
# try maybe

choices2 = ['single', 'dual']
choices2_index = get_input('Single or dual?', choices_keys=choices2)

answer1 = get_input('The answer will be converted to bytes with utf8 encoding', input_type=bytes, encoding='utf8')
answer2 = get_input('The answer will be converted to bytes with latin1 encoding', input_type=bytes, encoding='latin1')

print()
print('square_meters:', square_meters, type(square_meters))
print('apples:', apples, type(apples))
print('execute:', execute, type(execute))
print('answer1:', answer1, type(answer1))
print('answer2:', answer2, type(answer2))
print('choices2:', choices2_index, type(choices2_index))
print('choices2 content:', choices2[choices2_index])