Decorative flask routed embodied carding

Decorator comb achieve specific routing 

Flask has two core: Werkzeug and Jinja2

- Werkzeug实现路由、调试和Web服务器网关接口
- Jinja2实现了模板。

Werkzeug WSGI protocol to follow is a python library

- 其内部实现了很多Web框架底层的东西，比如request和response对象；
- 与WSGI规范的兼容；支持Unicode；
- 支持基本的会话管理和签名Cookie；
- 集成URL请求路由等。

Werkzeug library routing module responsible for implementing URL parsing. Different views of the function corresponding to a URL, URL routing module will request information by analyzing a view corresponding to the URL matching function, the function is executed in order to generate a response message.

routing inside the module are:

• Rule class
  • URL patterns for different configurations of objects, URL routing rules
• Map class
  • URL stores all the rules and some configuration parameters
• BaseConverter subclass
  • Responsible for defining the matching rules
• MapAdapter class
  • Responsible for coordinating the Rule of work to do specific match