human
Complete the below
@dual_decorator
def enforce_id_param(position=1):

    ''''Verifies that the caller is passing a single song id, and not
    a song dictionary.
    :param position: (optional) the position of the expected id - defaults to 1.'
    '''
assistant
#Here is the Python program you requested.
    @decorator
    def wrapper(function, *args, **kw):
        if (not isinstance(args[position], basestring)):
            raise ValueError((u'Invalid    param    type    in    position    %s;    expected    an    id    (did    you    pass    a    dictionary?)' % position))
        return function(*args, **kw)
    return wrapper