学到markdown时有错误 custom markdown is not a valid tag library求指导

[re-imagined]

Error during template rendering

In template /python_workspace/my_blog/templates/post.html, error at line 3

'custom_markdown' is not a valid tag library: Template library custom_markdown not found, tried django.templatetags.custom_markdown,django_admin_bootstrapped.templatetags.custom_markdown,django.contrib.admin.templatetags.custom_markdown,django.contrib.staticfiles.templatetags.custom_markdown

post.html

{% extends "base.html" %}
{% load custom_markdown %}
{% block content %}

            <h2 class="post-title">{{ post.title }}</h2>

                <p class="post-meta">

                    Time:  <a class="post-author" href="#">{{ post.date_time|date:"Y /m /d"}}</a> <a class="post-category post-category-js" href="#">{{ post.category }}</a>
  </p>
        </header>

[landyli]

我也是在博客学到markdown时遇到错误了，不过看了你的代码段把我的问题解决了，以下为错误代码段
href="{% url "search_tag" tag=post.category %}”
应该是 href="#”

拨错信息为：
Error during template rendering

In template /root/python/ENV3.4/my_blog/templates/post.html, error at line 12
Reverse for 'search_tag' with arguments '()' and keyword arguments '{'tag': '1111'}' not found. 0 pattern(s) tried: []

post.html

<p class="post-meta"> Time: <a class="post-author" href="#">{{ post.date_time|date:"Y /m /d"}}</a> <a class="post-category post-category-js" href="{% url "search_tag" tag=post.category %}">{{ post.category }}</a> </p>