Python's Web Framework Django

　　Python's Web Framework:

Django

I. The nature of the Web Framework:

For all web applications, essentially a socket server, the User's browser is actually a socket client.

1 #!/usr/bin/env python2 #Coding:utf-83 4 #the infrastructure of the web framework, which almost all developers are extending based on this underlying result. 5 6 ImportSocket7   8 defhandle_request (client):9BUF = Client.recv (1024)TenClient.send ("http/1.1 ok\r\n\r\n") oneClient.send ("Hello, Seven.") a    - defMain (): -Sock =Socket.socket (socket.af_inet, Socket. Sock_stream) theSock.bind (('localhost', 8000)) -Sock.listen (5) -    -      whileTrue: +connection, address =sock.accept () - handle_request (connection) + connection.close () a    at if __name__=='__main__': -Main ()

TWO. implementation of the Web Framework:

1. Based on the WSGI specification:

WSGI (Web Server Gateway Interface) is a specification that aims to provide a common API standard between the Web server and the Web framework layer, reducing interoperability and creating a unified invocation Approach. It solves many existing frameworks, such as django, Flask, web.py, and so on, and the Django application is quite Extensive.

A simple reference server (wsgirefs) is available in the Python standard library: wsgiref.simple_server. Wsgiserver.

1 #!/usr/bin/env python2 #Coding:utf-83  4  fromWsgiref.simple_serverImportMake_server5  6 defrunserver (environ, start_response):7Start_response ('OK', [('Content-type','text/html')])8     return ''9  Ten if __name__=='__main__': onehttpd = Make_server ("', 8000, Runserver) a     Print "serving HTTP on port 8000 ..." -Httpd.serve_forever ()

2. Custom socket, representative of TORNADO.

Three. Customize a Web Framework:

Python's Web Framework Django