def a_function(my_arg, another):
    """
    This is the brief description of my function.

    This is a more complete example of my function. It can include doctest,
    code blocks or any other reST structure.

    >>> a_function(10, [MyClass('a'), MyClass('b')])
    20

    :param int my_arg: The first argument of the function. Just a number.
    :param another: The other argument of the important function.
    :type another: A list of :class:`MyClass`

    :return: The length of the second argument times the first argument.
    :rtype: int
    """
    return my_arg * len(another)