Do futures support chaining? From a cursory read of PEP 3148 it doesn't look like they do.
-J 2011/1/10 Alex Grönholm <alex.gronh...@nextday.fi>: > There has been some discussion over email between myself and several > Twisted developers regarding the possibility of adding support for PEP > 3148 futures and executors to Twisted. I'm starting this thread to move > the conversation to this mailing list to gain a broader audience. > > For those who do not know what PEP 3148 is about, suffice to say that > it's an API for deferred execution of code. The reference implementation > can be found in the Python 3.2 standard library under the package name > concurrent.futures. A backport that works on Python 2.5, 2.6, 2.7 and > 3.1 has been made available by Brian Quinlan and myself and is available > for download at the Python Package Index. > > A brief summary of the email conversations: > > * The purpose of integrating PEP 3148 support is the intended shift > towards a common API for creating asynchronous applications > * Deferreds and Futures are alike in purpose but very different under > the hood > * Support for the Futures API cannot be integrated directly to Deferreds > because of the "result" attribute which is a method in Future but a > value in Deferred > * Some people suggested wrapping Futures in Deferreds, though I have yet > to hear a rationale for this > * PEP 3148 executor support could be directly integrated to Twisted's > thread pools (and by extension, reactors) as there are no naming > conflicts that I'm aware of > > The main focus of the discussion is to figure out how to best integrate > support for this new API to Twisted. If possible, existing protocols > should remain compatible through the use of adapters or some other > mechanism. If not, a way to port them over with a minimal amount of work > would be the next target. > > _______________________________________________ > Twisted-Python mailing list > Twisted-Python@twistedmatrix.com > http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python > _______________________________________________ Twisted-Python mailing list Twisted-Python@twistedmatrix.com http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python
