Django:ExtendsNode: extends 'base/base.html'> must be the first tag in the template.

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学习Django的过程，敲教程的样例过程，到模板继承这里，总是报下面的错误
error

子模板继承的代码如下

<!-- <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"><html lang="en"><head>    <title>The Future time</title></head><body>{# {% include "include/nav.html" %} #}<h1>My helpful timestamp site</h1><p>it is will be {{next_time}} after {{hour_offset}}</p><hr><p>Thanks for visiting my site.</p> </body> </html>  -->{%extends 'base/base.html'%}{%block title%} Future Time{%endblock%}{%block content%}<p> it is will be {{next_time}} after {{hour_offset}}</p>{%endblock%}

纠结了好长时间，然后根据错误信息，把未注释的代码放到开头，再试试，结果 ok了，不知道Django 这样设计的目的。。醉了
如下子类继承

{%extends 'base/base.html'%}{%block title%} Future Time{%endblock%}{%block content%}<p> it is will be {{next_time}} after {{hour_offset}}</p>{%endblock%}<!-- <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"><html lang="en"><head>    <title>The Future time</title></head><body>{# {% include "include/nav.html" %} #}<h1>My helpful timestamp site</h1><p>it is will be {{next_time}} after {{hour_offset}}</p><hr><p>Thanks for visiting my site.</p> </body> </html>  -->

刷新页面：
这里写图片描述

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