Flask-Jinjia2 Pagination template, the pattern is like '/display/<page_number>'

.html

{% macro pager(_uri, total, limit, curr_page, left=3, right=7) -%}
{% set uri=_uri %}
{% if total > limit %}
{% set page_num = total//limit if total%limit==0 else total//limit+1 %}
{% set pre_page = curr_page - 1 %}
{% set pre_page = 1 if pre_page < 1 else pre_page %}
{% set next_page = curr_page + 1 %}
{% set next_page = page_num if next_page > page_num else next_page %}
{% set begin_idx = 1 if curr_page <= 3 else curr_page - left %}
{% set end_idx = begin_idx + right %}
{% set end_idx = page_num if end_idx > page_num else end_idx %}
<ul class="pagination pagination-sm">
    {%if curr_page > 1 %}
    <li><a href="{{uri}}/1">首页</a></li>
    <li><a href="{{uri}}/{{pre_page}}">&lt;</a></li>
    {%else%}
    <li class="disabled"><a>首页</a></li>
    <li class="disabled"><a>&lt;</a></li>
    {%endif%}
    {% for idx in range(begin_idx, end_idx+1) %}
    <li class="{%if curr_page == idx %}active{%endif%}">
    <a href="{{uri}}/{{idx}}">{{idx}}</a>
    </li>
    {% endfor %}
    {%if curr_page < page_num %}
    <li><a href="{{uri}}/{{next_page}}">&gt;</a></li>
    <li><a href="{{uri}}/{{page_num}}">尾页</a></li>
    {%else%}
    <li
    class="disabled"><a>&gt;</a></li>
    <li
    class="disabled"><a>尾页</a></li>
    {%endif%}
</ul>
{%endif%}
{%- endmacro %}