python web application framework

Python has a lot of web frameworks, which are the schools of contention, and I've got a few more frameworks here. The Django market shares the highest, the official documents are almost perfect, but for larger projects, small projects can seem cumbersome. Tornado can be asynchronous, high performance, provide more underlying details, but also web soc

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

Write one of the simplest applications:def app (environ, start_response): start_response (' kOK', [(' Content-type'text/html ')] return [b ' ']Use the WSGI server that comes with the Python standard library:httpd = Make_server (",",application)print('serving HTTP on port 5000...') httpd.serve_forever (can be run.Here we implement a function, which can actually be done using classes, and it is more

First, Django introduction　　1, Django installation . Django installs and installs the other modules, we find the script directory of the Python installation directory, and then execute the command: PIP3 install Django. After the installation is complete, you will see the following Django-related files in the script directoryAfter executing this command, add the script directory to the environment variables of the system, and we can use the Django comm

http://192.168.86.10:8077/Running 30s Test @ http://192.168.86.10:8077/ 1 Threads and Conne Ctions Thread Stats Avg Stdev Max +/-Stdev Latency 1.88ms 548.76us 17.70ms 88.46% Req/sec 53.43k 2.40k 54.86k 96.33% 1593994 requests in 30.02s, 139.85MB readrequests/sec: 53104.58transfer/sec: 4.66MB　　The results of the test are affected by the server, operation mode, and so on, although the data is quite different, but the performance is very powerful.Unf

. The engine gets the first URL to crawl from the spider, and then dispatches it as a request in the schedule. The engine gets the page that crawls next from the dispatch. The schedule returns the next crawled URL to the engine, which the engine sends to the downloader via the download middleware. When the Web page is downloaded by the downloader, the response content is sent to the engine via the download middleware. The engine re

): Value=getattr (self, Key, None)ifValue isNone:field= self.__mappings__[key]ifField.default is notNone:value= Field.default ()ifCallable (Field.default)ElseField.default Logging.debug ('using default value for%s:%s'%(Key, str (value))) SetAttr (self, key, value)returnvalue @classmethod @asyncio. CoroutinedefFindnumber (CLS, Selectfield, Where=none, args=None):'find number by Select and where.'SQL= ['Select%s _num_ from '%s ''% (Selectfield, CLS.__table__)] ifWhere:sql.append ('where')

Django is a high-level web development framework based on Python, highly integrated and free to open source. Django Crown Click to open link web Development background Knowledge Supplement Normal Internet Flow : Open the browser--> address bar input URL url--> hit return (send HTTP request to the target URL)--> (the

My first python web development framework (5) -- preparations before development (knowledge about coding), pythonweb It's time to eat at noon, and Tom hurried to the location where the old dish sat. 　　Tom:Boss, invite you to dinner at noon. 　　Old dishes:Haha... you have another problem. This time, you have to beat it. 　　SmallWhite:As long as you enjoy your face a

The last time I learned the creation of the Helloword project of flask, this time to learn the template loading of flask project:First step: Create a Flask projectStep Two: Create an HTML file under the Templates folder in the project directoryStep three: Loading the template file here will use a template renderer under the flask package render_template so pour this render_templateFourth step: Run the project to see the effect of the template loadingThe above is the flask

==other.password import pickledir (pickle) user1=myuser (' Karli Ao ', ' 123456 ') user2=myuser (' Test ', ' 123 ') Fa=open (' E:/aa.txt ', ' W ') Pickle.dump (user1,fa,2) # #0, text form, 1,2-> Binary form pickle.dump (user2,fa,2) fa.close () fr=open (' E:/aa.txt ', ' R ') Users=[]while True:try:user=pickle.load (FR) Users.append (user) except Eoferror,e:breakusername=raw_input (' Please input your username: ') password=raw_inpu T (' Please input your password: ') curuser=myuser (Usernam

stability is quite different, our server processing more than 700 per second concurrency is the use of XML configuration.Python Server environment Build (1)--Local server preparationPython Server Environment Build (2)--Install related softwarePython Server Environment Construction (3)--parameter configurationCopyright NOTICE: This article was originally published in the blog Park, the author for Allempty This article welcome reprint, but without the author's consent must retain this paragraph s

Web Framework Environment number of Requests/S Average Time Sanic Python 3.5 Uvloop 31 3ms Wheezy Gunicorn Meinheld 21st 5ms Falcon Gunicorn Meinheld 19 6ms Bottle Gunicorn Meinheld 14 7ms Flask Gun

import textfrom sanic.exceptions import notfound@app.exception (NotFound) def ignore_404s (Request, Exception): Return text ("Yep, I totally found the page: {}". Format (Request.url))BlueprintLike the blueprints in flask, for organizing project structuresCreate a blueprint that is equivalent to creating a Sanic app with the same usage as above and changing the app to a blueprint name BPFrom sanic.response import jsonfrom sanic Import BLUEPRINTBP = Blueprint (' my_blueprint ') @bp. Route ('/') A

, - } - defrunserver (environ, start_response): +Start_response ('OK', [('Content-type','text/html')]) -url=environ['Path_info'] + ifurl=="/index": Aret=index () at elif: url=="/new" -ret=New () - Else: -ret="404" - returnret - if __name__=='__main__': inhttpd = Make_server ("', 8000, Runserver) -Httpd.serve_forever ()View CodeThis kind of writing business logic is very bad, once the URL is many, it is very troublesome, improve as follows:1 #!usr/bin/env python2 #-*-coding:utf-8-

Python learning-compile a simple web Framework (2)A bottle. A simple example of py to see how bottle is used. The code is from http://www.bottlepy.org/docs/0.12/index.html: copy the code from bottle import route, run, template @ route ('/hello/