twisted

I have the following python code using the twisted API. def function(self,filename): def results(result): //do something for i in range(int(numbers)) : name = something that has to do with the value of i df = function_which_returns_a defer(name) df.addCallback(results) It uses the Twisted API. What i want to achieve is to pass to the callbacked function (results) the value of the name which is constructed in every iteration without changing the content of the functions_which_returns_a defer() function along with the deferred object of course. In every result of the functions_which_returns_a

So, I programmed this twisted application a few months ago, which I now would like to extend with a web-based user interface for configuration. The Twisted website recommends Nevow, but I am not really sure if this is a good choice. Their website is down for a while it seems and their launchpad page hadn't seen any update in half a year. Is this project dead? Additionally I have seen discussion of moving parts of Nevow into twisted.web on the twisted-web mailinglist. So, is it still recommended for new developments? Another idea was using Django. I would need user authentication and

This is so broken, I hope you are merciful with me: reactor.callLater(0, myFunction, parameter1).addCallback(reactor.stop) reactor.run() myFunction returns a deferred. I hope it is clear what I want to do: as soon as the reactor is running, I want to call myFunction . That is why I am using 0 as the delay parameter. Is there no other way except callLater? It looks funny to pass it a delay of 0. I want to stop the reactor as soon as myFunction has completed the task. The problems that I have so far: AttributeError: DelayedCall instance has no attribute 'addCallback' . Fair enough! How do I put

I was just wondering what network libraries there are out there for Python for building a TCP/IP server. I know that Twisted might jump to mind but the documentation seems scarce, sloppy, and scattered to me. Also, would using Twisted even have a benefit over rolling my own server with select.select()? I must agree that the documentation is a bit terse but the tutorial gets you up and running quickly. http://twistedmatrix.com/projects/core/documentation/howto/tutorial/index.html The event-based programming paradigm of Twisted and it's defereds might be a bit weird at the start (was for me) but

Totally new to websockets. I am having a bit of trouble understanding how to interact with python Autobahn / twisted from another application and cannot seem to find any useful examples. I have a Python application running that needs on certain events to send one of two types of messages. The first is a broadcast message to all users. The second type is to a single specific user. Using the following two examples I can receive messages and send a response. However I do not need to receive anything from connected clients (other than clients connecting to the websockets server) only send to them.

And if so, under what conditions? Or, phrased alternately, is it safe to run this code inside of twisted: class StatsdClient(AbstractStatsdClient): def __init__(self, host, port): super(StatsdClient, self).__init__() self.addr = (host, port) self.server_hostname = socket.gethostname() self.udp_sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) def incr(self, stat, amount=1): data = {"%s|c" % stat: amount} self._send(data) def _send(self, data): for stat, value in data.iteritems(): self.udp_sock.sendto("servers.%s.%s:%s" % (self.server_hostname, stat, value), self.addr) Yes, oddly, a UDP

Is it possible to run Scrapy on PyPy ? I've looked through the documentation and the github project, but the only place where PyPy is mentioned is that there were some unit tests being executed on PyPy 2 years ago, see PyPy support . There is also Scrapy fails in PyPy long discussion happened 3 years ago without a concrete resolution or a follow-up. From what I understand, the main Scrapy's dependency Twisted is known to work on PyPy . Scrapy also uses lxml for HTML parsing, which has a PyPy -friendly fork . The other dependency, pyOpenSSL is fully supported (thanks to @Glyph's comment). Yes.