Mailman 3 January 2008 - Twisted

Re: [Twisted-Python] Making inlineCallback return a generator
by Andrew Francis Jan. 28, 2008

Jan. 28, 2008

Hello Nitro: > def SomeFunction(x): > . > . > result = echo(x) > . > . > . >Maybe I am missing something or we're going in >circles, but how about >@inlineCallbacks >def SomeFunction(x): > result = yield echo(x) Thanks for the information. However there is something you are missing. The 'something' is that one would have to alter a particular protocol's code (the SomeFunction) to call echo(x) in this fashion. Cheers, Andrew … [View More]

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[Twisted-Python] Stoping a deferedList
by tarjei Jan. 28, 2008

Jan. 28, 2008

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi, I'm using the FtpClient to upload a set of files. I start the uploads with the following code: def fileError(self, result): log.msg("Error has happened" + result.getErrorMessage()) log.msg(result.trap(Exception)) return result def endError(self, result): log.msg("End Error has happened") self.client.quit() self.client.transport.loseConnection() result.trap(Exception) def … [View More]

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[Twisted-Python] Soon to be not-a-newbie?
by Simon Pickles Jan. 28, 2008

Jan. 28, 2008

Twisted is a really inaccessible concept. It is very idiosyncratic with its millions of various classes and methods.... ... but if you persevere, its great! You just have to leave part of your brain behind in a field in hampshire :) I'd suffer the pain, just for deferreds! Simon -- Linux user #458601 - http://counter.li.org.

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[Twisted-Python] twistedsnmp
by Vincent Bernat Jan. 28, 2008

Jan. 28, 2008

Hello ! I had to use agent part of twistedsnmp [0]. This part was primarily done to test manager part, therefore, it lacks important features like handling of deferred to return results. To circumvent this limitation, I have hacked a bit to make a small patch to allow limited use of deferred [1]. I have proposed the patch to the author but got no answer. Looking at the CVS [2], it seems that twistedsnmp is unmaintained since almost 2 years. Has anybody any news … [View More]

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Re: [Twisted-Python] Making inlineCallback return a generator
by Andrew Francis Jan. 27, 2008

Jan. 27, 2008

Hello Nitro: >@defer.inlineCallbacks >def echo(self, x): > result = yield client.getPage("http://localhost") > defer.returnValue(result) According to the documentation, defer.returnValue() returns a value. The problem in this scenario is that the inlineCallback is being used in the following context: def SomeFunction(x): . . result = echo(x) . . . you need to call return so that SomeFunction can get a result. Think of SomeFunction being the … [View More]

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Re: [Twisted-Python] Another inlinecallback question
by Andrew Francis Jan. 27, 2008

Jan. 27, 2008

Hello Jean-Paul Calderone: >In other words, inlineCallbacks lets you suspend >execution, _inside_ the function you decorate with it, >until a result is available. It only lets >you do this _inside_. Outside, the decorated function >simply appears to return a Deferred. Thanks for the explanation. Currently I use Stackless to allow my code to make synchronous calls that use Twisted. I still have to study inlineCallbacks but it seems that both Stackless and inclineCallbacks … [View More]

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[Twisted-Python] How to get the real ClientFactory or ServerFactory object?
by 李祥曦 Jan. 27, 2008

Jan. 27, 2008

Hi all: I am new to twisted,i want to write a program like a proxy,which get data from simplely listen to local client,transport it request to real server,and the reply to the client.My plan is rewrite the dataReceived method in twisted.internet.protocol.Protocol and call the sendLine method in ServerFactory.But i failed beacuse i can not get the real ServerFactory object,when i set in ServerFactory testFactory=StdioProxyFactory() host = "202.108.42.15" port = 8848 … [View More]

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[Twisted-Python] Weekly Bug Summary
by exarkun＠twistedmatrix.com Jan. 27, 2008

Jan. 27, 2008

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[Twisted-Python] Making inlineCallback return a generator rather than a Deferred
by Andrew Francis Jan. 26, 2008

Jan. 26, 2008

Hello Folks: As I previously mentioned, I have the following called from a PyAMF method: @defer.inlineCallbacks def echo(self, x): result = yield client.getPage("http://localhost") because of the yield, I cannot use return result In a bout of wishful thinking, I tried the following: @defer.inlineCallbacks def __echo__(self, x): result = yield client.getPage("http://localhost") yield result def echo(self, x): return self.__echo__(x).next() This raises an … [View More]

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Re: [Twisted-Python] Another inlinecallback question
by Andrew Francis Jan. 26, 2008

Jan. 26, 2008

Hello Matthias: >User defer.returnValue(result) instead of return. No I previously tried using defer.returnValue(), not expecting it to work, and it did not. The calling function (some method in PyAMF) is expecting a value from the return statement, a return that cannot be set with an argument. Cheers, Andrew ____________________________________________________________________________________ Never miss a thing. Make Yahoo your home page. http://www.yahoo.com/r/hs

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