def even_or_odd_(number, printed=False):
    """Return whether a number is even or odd."""
    if number%2 == 0: # If the number divided by 2 has a remainder of zero.
        number = 'even' # Then the number is an even number.
    else:
        number = 'odd' # If not then it's an odd number.

    if printed:
        print(number)
    else:
        return number