def get_shown_pages(self, page_index_count = 11):
        if not self.has_more_pages:
            return range(1, 2)

        min_page = 1
        max_page = int(ceil(float(self.num_items) / self.max_per_page))
        current_page = self.page + 1
        start_page = current_page - page_index_count / 2
        end_page = current_page / page_index_count / 2 + \
                   (page_index_count % 2 - 1)

        if start_page < min_page:
            start_page = min_page
        if end_page > max_page:
            end_page = max_page

        return range(start_page, end_page + 1)
dataset/ETHPy150Open edgewall/trac/trac/util/presentation.py/Paginator.get_shown_pages/operator `+` -> `/`