{% for article in articles %}
    <a href="{% url 'blog:article_page' article.id %}">{{article.title}}</a>

出现了错误   这是本地服务器出现的You're seeing this error because you have DEBUG = True in your Django settings file. Change that to False, and Django will display a standard page generated by the handler for this status code.

敲代码时不出现智能提示，全是灰色的