Mailman 3 January 2017 - Twisted

[Twisted-Python] Buildbot downtime
by Tom Prince 03 Mar '22

03 Mar '22

I am plannig to upgrade twisted's buildbot in the near future. In preperation for that, I am going to take down the production buildbot on Tuesday, June 26, around 1600 UTC[1]. During that time, the result of any builds done will be lost. Thus, I'd ask that people avoid committing to trunk during that time. I will send a reminder before I take down the buildbot both here, and on #twisted and #twisted-dev. Tom [1] http://timeanddate.com/worldclock/meetingtime.html?iso=20120626&p1=80&p2=22…

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[Twisted-Python] Twisted Python 0.7.0 Prerelease Testing
by Glyph Lefkowitz 05 Aug '21

05 Aug '21

hi there, folks: I'd really like to release 0.7.0 but I would like it to be at least a little bit tested before I do so. Could those of you with CVS trees check everything out and see if it performs as advertised? Deeper bugs than that will have to wait for the next release, but I'd at least like to know if it works for someone other than me. Thanks. ______ __ __ _____ _ _ | ____ | \_/ |_____] |_____| |_____| |_____ | | | | @ t w i s t e d m a t r i x . c o m http://www.twistedmatrix.com/~glyph/

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[Twisted-Python] "twistd" in Twisted 16.4.0 can't import modules/packages from current working directory
by Yuri 14 Feb '17

14 Feb '17

Hi all I couldn't find Twisted-specific group, so posting here. Recently Twisted 16.4.0 got released. Yesterday I've tried to upgrade it for my apps and got an error. I've created simple example, which demonstrates it. File service.tac: ======================================= import os from twisted.application import service, internet import mymodule application = service.Application("Demo application") ---------------------------------------- File mymodule.py: ======================================== def myfunction(asd): """ Stub function """ ---------------------------------------- If you try to run it with twistd -y service.tac you'll get an error: == output ============================== Unhandled Error Traceback (most recent call last): File "/usr/local/lib/python2.7/site-packages/twisted/application/app.py", line 648, in run runApp(config) File "/usr/local/lib/python2.7/site-packages/twisted/scripts/twistd.py", line 25, in runApp _SomeApplicationRunner(config).run() File "/usr/local/lib/python2.7/site-packages/twisted/application/app.py", line 379, in run self.application = self.createOrGetApplication() File "/usr/local/lib/python2.7/site-packages/twisted/application/app.py", line 444, in createOrGetApplication application = getApplication(self.config, passphrase) --- <exception caught here> --- File "/usr/local/lib/python2.7/site-packages/twisted/application/app.py", line 455, in getApplication application = service.loadApplication(filename, style, passphrase) File "/usr/local/lib/python2.7/site-packages/twisted/application/service.py", line 411, in loadApplication passphrase) File "/usr/local/lib/python2.7/site-packages/twisted/persisted/sob.py", line 223, in loadValueFromFile eval(codeObj, d, d) File "service.tac", line 7, in <module> import mymodule exceptions.ImportError: No module named mymodule Failed to load application: No module named mymodule ---------------------------------------- The errors comes down to this: twistd script does not add current working directory to python path (or removes it, I don't know what exactly happens), so it fails to import any packages/modules from it. The issue does not appear in previous version (Twisted 16.3.2). Any ideas what caused it?

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[Twisted-Python] web client FileBodyProducer - transfer encoding
by Kevin Mcintyre 30 Jan '17

30 Jan '17

hey all - quick question. Trying to understand FileBodyProducer as it pertains to POST. json_body = FileBodyProducer(StringIO(json.dumps({'key': 'value'}))) agent.request("POST", ~*uri*, Headers({'User-Agent': ['AkamaiTest']}), json_body) Does the agent chunk the POST body? Is this controllable? Any insight appreciated!

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[Twisted-Python] Twisted Mailing List Archive Search
by Роман Мещеряков 29 Jan '17

29 Jan '17

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[Twisted-Python] Twisted 17.1.0rc1 Release Candidate Announcement
by Amber Hawkie Brown 29 Jan '17

29 Jan '17

Hello everyone! 16.7 didn't go as well as planned, so I thought we'd try again in the new year! So, here is Twisted 17.1, the first release of 2017. It's got all the cool things that were going to be in 16.7, *and more*. Wow! - twisted.web.client.Agent now supports IPv6! It's also now the primary web client in Twisted, with twisted.web.client.getPage being deprecated in favour of it and Treq. - twisted.web.server has had many cleanups revolving around timing out inactive clients. - twisted.internet.ssl.CertificateOptions has had its `method` argument deprecated, in favour of the new raiseMinimumTo, lowerMaximumSecurityTo, and insecurelyLowerMinimumTo arguments, which take TLSVersion arguments. This allows you to better give a range of versions of TLS you wish to negotiate, rather than forcing yourself to any one version. - twisted.internet.ssl.CertificateOptions will use OpenSSL's MODE_RELEASE_BUFFERS, which will let it free unused memory that was held by idle TLS connections. - You can now call the new twist runner with `python -m twisted`. - twisted.conch.ssh now has some ECDH key exchange support and supports `hmac-sha2-384`. - Better Unicode support in twisted.internet.reactor.spawnProcess, especially on Windows on Python 3.6. - More Python 3 porting in Conch, and more under-the-hood changes to facilitate a Twisted-wide jump to new-style classes only on Python 2 in 2018/2019. This release has also been tested on Python 3.6 on Linux. - Lots of deprecated code removals, to make a sleeker, less confusing Twisted. - 60+ closed tickets. You can get the tarball and the NEWS file at https://twistedmatrix.com/Releases/rc/17.1.0rc1/ <https://twistedmatrix.com/Releases/rc/17.1.0rc1/> , or you can try it out from PyPI: python -m pip install Twisted==17.1.0rc1 Please test it, and let me know how your applications fare, good or bad! If nothing comes up, 17.1 will release in a week. A bit more hopeful this time, Amber Brown

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[Twisted-Python] Weekly Bug Summary
by trac＠twistedmatrix.com 28 Jan '17

28 Jan '17

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[Twisted-Python] Can't create ticket in Trac
by Craig Rodrigues 27 Jan '17

27 Jan '17

Hi, I can't seem to create a ticket in Trac. Can someone look? -- Craig

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[Twisted-Python] Problems with inlineCallback, Deferred, yield and Python 3 in buildbot
by Craig Rodrigues 26 Jan '17

26 Jan '17

Hi, I have been submitting many patches to get buildbot working on Python 3: http://bit.ly/2jCCMPW I have run into one problem involving inlineCallback, Deferred, and yield which I am having difficulty solving. Can someone help me? If I do the following inside a Python 3 virtualenv to set things up: git clone https://github.com/buildbot/buildbot buildbot_test cd buildbot_test pip install -e pkg pip install -e worker pip install -e 'master[tls,tests]' trial buildbot.test.unit.test_process_buildrequestdistributor I get this error: ================================================================== File "/Users/crodrigues/buildbot_test/master/buildbot/process/buildrequestdistributor.py", line 93, in <lambda>^M brdicts.sort(key=lambda brd: brd['submitted_at']) builtins.TypeError: 'Deferred' object is not subscriptable buildbot.test.unit.test_process_buildrequestdistributor.TestMaybeStartBuilds.test_slow_db^M ================================================================== The code causing this problem is on line 93 of master/buildbot/process/buildrequestdistributor.py: 78 @defer.inlineCallbacks 79 def _fetchUnclaimedBrdicts(self): 80 # Sets up a cache of all the unclaimed brdicts. The cache is 81 # saved at self.unclaimedBrdicts cache. If the cache already 82 # exists, this function does nothing. If a refetch is desired, set 83 # the self.unclaimedBrdicts to None before calling.""" 84 if self.unclaimedBrdicts is None: 85 # TODO: use order of the DATA API 86 brdicts = yield self.master.data.get(('builders', 87 (yield self.bldr.getBuilderId()), 88 'buildrequests'), 89 [resultspec.Filter('claimed', 90 'eq', 91 [False])]) 92 # sort by submitted_at, so the first is the oldest 93 brdicts.sort(key=lambda brd: brd['submitted_at']) 94 self.unclaimedBrdicts = brdicts 95 defer.returnValue(self.unclaimedBrdicts) If I run the test on Python 2, I don't get the error, and on line 93, brdicts is a dict. However, if I run the test on Python 3, brdicts is a Deferred, thus the error. Can someone point me in the right direction for solving this problem? I am not so familiar with the differences in generators and Deferreds between Python 2 and 3. Thanks. -- Craig

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