python include标签的使用方式及说明

Gitana ·
更新时间:2024-11-10
· 541 次阅读

目录

include标签如何使用?

include标签的使用

截图如下

总结

include标签如何使用? include标签的使用

在讲python include标签使用之前,我们新建一个include_demo项目

截图如下

项目新建好了,再在templates文件下新建一个index.html文件,代码如下:

<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> <style> *{margin:0;padding:0;} ul{list-style: none;} a{text-decoration: none; color: #ffffff;} nav,footer,.main{width:1000px; height:40px; margin:0 auto;} ul{width: 1000px; height:40px; line-height: 40px; background-color:#000000;} li{width:120px; height:40px; line-height:40px; text-align: center; float:left;} .main{clear:both; line-height:40px; background-color:pink;} footer{height:40px; background-color: green;} </style> </head> <body> <nav> <ul> <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >首页</a></li> <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >关于我们</a></li> <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >产品中心</a></li> <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >新闻中心</a></li> <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >服务宗旨</a></li> <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >联系我们</a></li> </ul> </nav> <div class="main"> 网站首页主体部分 </div> <footer> 网站首页footer部分 </footer> </body> </html>

然后在include_demo.py页面渲染一下index模板文件,代码如下:

from flask import Flask,render_template app = Flask(__name__) @app.route('/') def hello_world(): return render_template("index.html") if __name__ == '__main__': app.run(debug=True)

运行include_demo.py文件,运行结果如下:

在这里主要是为了方便讲解include标签,所有没太注重前端页面部分。

通过上面index.html文件就能发现,我将公共和私有代码部分都在一块,假设网站有几十个页面,我将所有公共代码和私有代码

都放一块,如果有一天要修改某个公共代码块,哪就得修改几十个页面,那将是件非常麻烦的事。为了方便管理项目,我们将页面公共、私有代码部分抽取出来。

我们新建一个header.html文件,把css样式及nav标签内容复制到header.html页面中。

代码如下:

<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> <style> *{margin:0;padding:0;} ul{list-style: none;} a{text-decoration: none; color: #ffffff;} nav,footer,.main{width:1000px; height:40px; margin:0 auto;} ul{width: 1000px; height:40px; line-height: 40px; background-color:#000000;} li{width:120px; height:40px; line-height:40px; text-align: center; float:left;} .main{clear:both; line-height:40px; background-color:pink;} footer{height:40px; background-color: green;} </style> </head> <body> <nav> <ul> <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >首页</a></li> <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >关于我们</a></li> <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >产品中心</a></li> <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >新闻中心</a></li> <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >服务宗旨</a></li> <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >联系我们</a></li> </ul> </nav> </body> </html>

然后新建一个footer.html文件,把footer标签中的内容复制到该文件中。

代码如下:

<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> </head> <body> <footer> 网站首页footer部分 </footer> </footer> </body> </html>

我们在运行主app文件,结果如下:

(^-^),为啥没有居中,背景色也不见了??因为我们没有把样式引入进来(嗯,页面太丑了,没法看了,赶紧关了!!)

OK!我们将公共代码抽取出来后。记得在index.html文件中用include标签导入header、footer代码块,代码如下:

<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> </head> <body> {% include "header.html" %} <div class="main"> 网站首页主体部分 </div> {% include "footer.html" %} </body> </html>

再运行主app文件,结果如下:

嗯,结果是不是和之前一样,对吧!

通过上面例子,相信大部分小伙伴都明白了include标签的作用及用法。总之一句话,include标签的作用就相当于把抽取的代码复制到当前页面中。

总结

以上为个人经验,希望能给大家一个参考,也希望大家多多支持软件开发网。



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