twisted

Python之路~Scrapy安装

由 十年热恋 提交于 2019-12-24 22:20:34
Scarpy框架的安装 环境：Anconda Version：conda 4.8.0 开始安装 如果直接使用命令 pip install scrapy 或者 conda install scrapy 可能会报错。安装前需要安装其他的第三方包。 我这里测试过（我安装的是Python的集成包anconda)，只需要安装Twisted模块，再通过 conda install scrapy 就能安装成功。 1、下载Twisted 链接地址：https://www.lfd.uci.edu/~gohlke/pythonlibs/#genshi 找到Twisted，根据操作系统的位数选择对应的版本。 下载完成后，会得到一个.whl结尾的文件。 conda install Twisted-19.10.0-cp38-cp38-win_amd64.whl 2、安装Scrapy 使用命令安装， conda install scrapy 3、测试 如果输入import scrapy 没有报错，则说明安装成功了！ PS：安装方法简单粗暴，正好适合新手安装，不然一堆的报错，容易让人有挫败感。也是做个学习笔记。 来源： CSDN 作者： 包子加入侵 链接： https://blog.csdn.net/Baozijiaruqing/article/details/103688872

Multiple thread with Autobahn, ApplicationRunner and ApplicationSession

由 眉间皱痕 提交于 2019-12-24 17:12:06
问题 python-running-autobahnpython-asyncio-websocket-server-in-a-separate-subproce can-an-asyncio-event-loop-run-in-the-background-without-suspending-the-python-in Was trying to solve my issue with this two links above but i have not. I have the following error : RuntimeError: There is no current event loop in thread 'Thread-1'. Here the code sample (python 3): from autobahn.asyncio.wamp import ApplicationSession from autobahn.asyncio.wamp import ApplicationRunner from asyncio import coroutine

twisted - detection of lost connection takes more than 30 minutes

由 孤街醉人 提交于 2019-12-24 16:29:13
问题 I've written a tcp client using python and twisted, it connects to a server and communicate in a simple string based protocol (Defined by the server manufacturer). The TCP/IP connection should persist, and reconnect in case of failure. When some sort of network error occurs (I assume on the server side or on some node along the way), it takes a very long time for the client to realize that and initiate a new connection, much more than a few minutes. Is there a way to speed that up? Some sort

Connection drop with IBM Watson Server

由 左心房为你撑大大i 提交于 2019-12-24 14:02:32
问题 I have been using IBM watson speech to text over websockets and since recently there are connection drops in the middle of process or handshake issues. This is the error log and it can't process audio files after 1-2 minutes of handshake: _connectionLost: [Failure instance: Traceback (failure with no frames): : Connection was closed cleanly. ('WebSocket connection closed: connection was closed uncleanly (peer dropped the TCP connection without previous WebSocket closing handshake)', 'code: ',

Alternative to a while loop in twisted which doesn't block the reactor thread

由 北城以北 提交于 2019-12-24 12:46:32
问题 I'm making a chat application in twisted. Suppose my server is designed in such a way that whenever it detects a client online, it sends the client all the pending-messages (those messages of that client which were cached in a python-list on the server because it was offline) one-by-one in a while loop until the list is exhausted. Something like this: class MyChat(LineReceiver): def connectionMade(self): self.factory.clients.append(self) while True: #retrieve first message from a list of

Any ideas how to create parameterised streaming api?

由 坚强是说给别人听的谎言 提交于 2019-12-24 12:15:45
问题 I want to create parameterised streaming api like http://dev.twitter.com/pages/streaming_api_methods#statuses-filter The straightforward way I see is following: Create redis channel for messages (like twitter statuses). Each connected socket subscribes on this channel. Inside redis callback each sockets check if current message fits supplied parameters (parameters could be set as separate socket message) What you think guys? 回答1: You might want to look at nats 来源： https://stackoverflow.com

Does twisted, cyclone or tornado do SMP multicore out of the box

由 半腔热情 提交于 2019-12-24 12:04:09
问题 I'd like to use any one of the 3 mentioned non-blocking servers on an AWS Linux server with 8 cores. It's not clear in any of the documentation whether SMP is implemented under the covers in the respective helloworld or any other examples. For example, this cyclone helloworld mentions nothing about cores or SMP or threads per core. import cyclone.web class MainHandler(cyclone.web.RequestHandler): def get(self): self.write("Hello, world") class Application(cyclone.web.Application): def __init_

Can autobahn.twisted.wamp.Application do pub/sub?

由 你。 提交于 2019-12-24 11:58:31
问题 I would like to use some pub/sub features along with rpc from autobahn.twisted.wamp.Application I'd prefer not to make a ApplicationSession class if I can get by without doing so. Can registered rpc methods cause client subscriptions and publish? If they can, please show me how. 回答1: Yes, sure: def onEvent(msg): print("got event: {}".format(msg)) @app.register('com.example.triggersubscribe') def triggerSubscribe(): yield app.session.subscribe(onEvent, 'com.example.topic1') When

Scrapy twisted connection lost in non-clean fashion. No proxy. Already tried headers

由 耗尽温柔 提交于 2019-12-24 10:13:25
问题 I am trying to crawl this site https://www5.apply2jobs.com/jupitermed/ProfExt/index.cfm?fuseaction=mExternal.searchJobs with scrapy and keep getting twisted request/disconnection errors. I am not using a proxy and I tried both setting the user agent and actually setting all the headers based on this answer here is the code generating the request def start_requests(self): url = 'https://www5.apply2jobs.com/jupitermed/ProfExt/index.cfm?fuseaction=mExternal.searchJobs' headers = { 'Accept':

Twisted test - both success and error callback fire on deferred

由 巧了我就是萌 提交于 2019-12-24 06:45:42
问题 Writing a unit test for a twisted application. Trying to perform some asserts once deferred is resolved with a new connection (instance of Protocol), however seeing that both success and error callbacks are being fired (judging by both SUCCESS and FAIL being printed in console). def test_send_to_new_connection(self): # Given peerAddr = ('10.22.22.190', 5060) # If self.tcp_transport.send_to('test', peerAddr) # Then assert peerAddr in self.tcp_transport._connections assert True == isinstance
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