'Print verbose message on initialization.'

def _print_verbose_msg_iter_end(self, n_iter, diff_ll):

    if ((n_iter % self.verbose_interval) == 0):
        if (self.verbose == 1):
            print(('        Iteration    %d' % n_iter))
        elif (self.verbose >= 2):
            cur_time = time()
            print(('        Iteration    %d DCTB     time    lapse    %.5fs DCTB     ll    change    %.5f' % (n_iter, (cur_time - self._iter_prev_time), diff_ll)))
            self._iter_prev_time = cur_time
