twisted

Python twisted: where to start [closed]

ぐ巨炮叔叔 提交于 2019-11-27 16:38:22
I am trying to start learning twisted for socket servers creation. I want to add some useful features (like auth, and maybe some other). Maybe someone can point me to a good tutorial which will help me to start (+ maybe some other ideas) Look here: Twisted Web in 60 seconds . That's a group of blog posts describing step by step how to do lots of common stuff with Twisted, all written by Jean-Paul Calderone, the biggest contributor of Twisted. It's really where you should start. After that, look at the Twisted core documentation then refer to the API and then into the source code . Have fun!

Scrapy on a schedule

ⅰ亾dé卋堺 提交于 2019-11-27 16:36:48
问题 Getting Scrapy to run on a schedule is driving me around the Twist(ed). I thought the below test code would work, but I get a twisted.internet.error.ReactorNotRestartable error when the spider is triggered a second time: from quotesbot.spiders.quotes import QuotesSpider import schedule import time from scrapy.crawler import CrawlerProcess def run_spider_script(): process.crawl(QuotesSpider) process.start() process = CrawlerProcess({ 'USER_AGENT': 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT

Error on “pip install -U channels” command using for otree (Running setup.py bdist_wheel for twisted … error)

微笑、不失礼 提交于 2019-11-27 16:21:31
For a project using otree ( http://otree.readthedocs.io/ ) I ran into some problems trying to install Channels in order to make use of real-time functionalities. Because of the long output I tried to figure out the most important parts: For full output see: https://jsfiddle.net/L4ccmr2k/1/ Red marked output & output considered relevant from my side: 1. Building wheels for collected packages: twisted Running setup.py bdist_wheel for twisted ... error 2. creating build/temp.macosx-10.6-intel-3.6 creating build/temp.macosx-10.6-intel-3.6/src creating build/temp.macosx-10.6-intel-3.6/src/twisted

Twisted server-client data sharing

笑着哭i 提交于 2019-11-27 15:21:21
问题 I slightly modified a server-client Twisted program on this site, which provided a program that could act as a server and a client (http://stackoverflow.com/questions/3275004/how-to-write-a-twisted-server-that-is-also-a-client). I am able to connect the server-client to an external client on one side and an external server on the other. I want to transfer data from the external client to the external server via the server-client program. The problem I am having is getting the line received in

Mix Python Twisted with multiprocessing?

久未见 提交于 2019-11-27 14:27:05
I need to write a proxy like program in Python, the work flow is very similar to a web proxy. The program sits in between the client and the server, incept requests sent by the client to the server, process the request, then send it to the original server. Of course the protocol used is a private protocol uses TCP. To minimize the effort, I want to use Python Twisted to handle the request receiving (the part acts as a server) and resending (the part acts as a client). To maximum the performance, I want to use python multiprocessing (threading has the GIL limit) to separate the program into

Installing Twisted through pip broken on one server

。_饼干妹妹 提交于 2019-11-27 13:46:13
问题 I am setting up a virtualenv on a new server, and when I used pip on our requirements file, it kept dying on Twisted. I commented the Twisted line out, and everything else installed fine. At the command line, this is the output I see when I try to install Twisted (the same error I see when I run the entire requirements file once it gets to the Twisted line): (foo)company@server:~$ pip install twisted Collecting twisted Could not find a version that satisfies the requirement twisted (from

Python packages not installing in virtualenv using pip

 ̄綄美尐妖づ 提交于 2019-11-27 13:27:52
I'm having trouble installing twisted pip --version pip 1.1 from /home/chris/GL/GLBackend/glenv/lib/python2.7/site-packages/pip-1.1-py2.7.egg (python 2.7) Create a virtual environment chris@chris-mint ~/GL/GLBackend $ sudo virtualenv -p python2.7 glenv Running virtualenv with interpreter /usr/bin/python2.7 New python executable in glenv/bin/python2.7 Also creating executable in glenv/bin/python Installing distribute.....................................................................................................................................................................................

Best way to run remote commands thru ssh in Twisted?

喜你入骨 提交于 2019-11-27 13:09:54
问题 I have a twisted application which now needs to monitor processes running on several boxes. The way I manually do is 'ssh and ps', now I'd like my twisted application to do. I have 2 options. Use paramiko or leverage the power of twisted.conch I really want to use twisted.conch but my research led me to believe that its primarily intended to create SSHServers and SSHClients. However my requirement is a simple remoteExecute(some_cmd) I was able to figure out how to do this using paramiko but I

Python四大主流Web编程框架

余生颓废 提交于 2019-11-27 12:09:25
Python四大主流Web编程框架 作者:陈秋歌 https://blog.csdn.net/chenqiuge1984/article/details/80127498 本文内容摘录自《 Python高效开发实战——Django、Tornado、Flask、Twisted 》一书。该书分为三部分:第1部分是基础篇,带领初学者实践Python开发环境和掌握基本语法,同时对网络协议、Web客户端技术、数据库建模编程等网络编程基础深入浅出地进行学习;第2部分是框架篇,学习当前最流行的Python Web框架,即Django、Tornado、Flask和Twisted,达到对各种Python网络技术融会贯通的目的;第3部分是实战篇,分别对4种框架进行项目实践,利用其各自的特点开发适用于不同场景的网络程序。 目前Python的网络编程框架已经多达几十个,逐个学习它们显然不现实。但这些框架在系统架构和运行环境中有很多共通之处,本文带领读者学习基于Python网络框架开发的常用知识,及目前的4种主流Python网络框架:Django、Tornado、Flask、Twisted。 网络框架及MVC架构 所谓网络框架是指这样的一组Python包,它能够使开发者专注于网站应用业务逻辑的开发,而无须处理网络应用底层的协议、线程、进程等方面。这样能大大提高开发者的工作效率,同时提高网络应用程序的质量。

How to find the source of increasing memory usage of a twisted server?

冷暖自知 提交于 2019-11-27 11:41:13
问题 I have an audio broadcasting server written in Python and based on Twisted. It works fine, but its memory usage is increasing when there are more users on server, but the memory usage never goes down when those users get off line. As you see in following figure: You can see the curve of memory usage goes up where the curve of listeners/radios goes up, but after the peak of listener/radios, the memory usage is still high, never goes down. I have tried following method for solving this problem: