'Callback for the C _Dispatcher object.'

def _explain_matching_error(self, *args, **kws):

    assert (not kws), 'kwargs    not    handled'
    args = [self.typeof_pyval(a) for a in args]
    msg = ('No    matching    definition    for    argument    type(s)    %s' % ',    '.join(map(str, args)))
    raise TypeError(msg)
