Python custom web framework, JINJA2

WSGI (Web server Gateway Interface) is a specification that defines the interface format between Web apps and Web servers written in Python, enabling decoupling between Web apps and Web servers.

The standalone WSGI server provided by the Python standard library is called Wsgiref.

Standard Web Framework

#!/usr/bin/env python#coding:utf-8from wsgiref.simple_server Import make_serverdef runserver (environ, start_response ):    start_response (' K OK ', [(' Content-type ', ' text/html ')])    return ' 
　　
Customizing the web Framework
From wsgiref.simple_server import make_serverdef login ():    return ' login ' def index ():    data = open (' index.html ', ' R '). Read ()    return dataurl = (    ('/login/', login), ('/index/', index), Def runserver (environ, start_response):    start_response (' K OK ', [(' Content-type ', ' text/html ')])    Geturl = environ[' Path_info '] for    item in url:< C7/>if item[0] = = Geturl:            return  item[1] ()    else:        return ' 404 ' if __name__ = = ' __main__ ':    httpd = Make_server (", 8000, runserver)    print" Serving HTTP on port 8000 ... " Httpd.serve_forever ()
　　
Classification of MVC and MTV code stacking
   Mvc:model, View , Controller          
          &NBSP;&NBSP,      &NBSP,        model holds data operations, view holds HTML files, Controller   responsible for logical processing    
   Mtv:model, Template, View 
               &NBSP;&NBSP,      &NBSP,        model store data operations,   storing HTML files,  view responsible for logical processing    
Django is MTV mode

Template Rendering Jinja2
From wsgiref.simple_server import make_serverimport timefrom jinja2 import templateimport sysreload (SYS) Sys.setdefaultencoding (' UTF8 ') #//resolve Unicodedecodeerrordef Login (): Return ' login ' def index (): data = open (' Index. HTML ', ' R '). Read () Current_time = Time.strftime ('%y-%m-%d%h:%m:%s ') template = template (data) #使用jinja2模板处理 Res Ult = Template.render (name= ' YANGMV ', age= '), Current_time=curren                             T_time, user_list=[' WJ ', ' SB ',], num=1, Return Result.encode (' utf-8 ') url = (('/login/', login), ('/index/', index), Def runserver (environ, start_respon        SE): start_response (' OK ', [(' Content-type ', ' text/html ')]) Geturl = environ[' Path_info '] for the item in URL: If item[0] = = Geturl:return Item[1] () Else:return ' 404 ' if __name__ = = ' __main__ ': httpd = m Ake_server (", 8000, runserver) print"Serving HTTP on port 8000 ... " Httpd.serve_forever ()
　
　　
Python custom web framework, JINJA2