Mailman 3 January 2015 - python-committers

MSDN Subscriptions/Renewals
by Brian Curtin March 3, 2015

March 3, 2015

Hey all, Since I've gotten a couple of requests now for MSDN renewals, I may as well try to do them in a big batch. If you have an MSDN subscription that is expired or soon expiring, I can get you a renewal if you send me the email address you use to login and your Subscriber ID. This is found at https://msdn.microsoft.com/subscriptions/manage/ If you don't have a subscription but would like one - it gives you access to Windows ISOs, Visual Studio, and other Microsoft software - please send me your preferred email address, mailing address, and telephone number, and I'll get you setup. Brian Curtin

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Possible "REMOTE HOST IDENTIFICATION HAS CHANGED!" Error.
by Donald Stufft Jan. 23, 2015

Jan. 23, 2015

Sending this to python-committers as well for anyone who doesn't keep up with python-dev. If you've gotten this message twice now I'm sorry! Just a heads up that people might see a "REMOTE HOST IDENTIFICATION HAS CHANGED!" error when connecting to hg.python.org's SSH (or any other PSF machine). The reason for this is that previously we allowed RSA, ECDSA, and ED25519 host keys. However ECDSA relies on having an unbiased random number generator on every connection and any bias in the random numbers can leak the private key. Since these are running on VMs where we don't know for sure what the quality is of the random numbers I've disabled the ECDSA host key. The impact of this is if you had previously connected to a PSF machine, and your client had the ECDSA key in your ~/.ssh/known_hosts file, that you'll see an error like: @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY! Someone could be eavesdropping on you right now (man-in-the-middle attack)! It is also possible that a host key has just been changed. The remediation is to remove the ECDSA for the PSF servers from your known hosts and connect again and accept either the RSA or the ED25519 key when it presents it. The fingerprints for hg.python.org for both of those keys are: $ ssh-keygen -lf /etc/ssh/ssh_host_rsa_key.pub 2048 a0:12:52:50:4a:4b:db:43:ac:65:26:b6:6f:0a:f7:b8 /etc/ssh/ssh_host_rsa_key.pub (RSA) $ ssh-keygen -lf /etc/ssh/ssh_host_ed25519_key.pub 256 1d:02:d1:d2:7b:a1:cb:e0:51:65:25:d7:19:dd:4e:74 /etc/ssh/ssh_host_ed25519_key.pub (ED25519) Sorry for any inconvience this causes! --- Donald Stufft PGP: 7C6B 7C5D 5E2B 6356 A926 F04F 6E3C BCE9 3372 DCFA

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You are invited to the Pycon 2015 Language Summit
by Barry Warsaw Jan. 22, 2015

Jan. 22, 2015

[Apologies for any duplicates you might have gotten - B] Hello everyone - it's that time of year again where we plan the Pycon 2015 Language Summit. Unfortunately, this year Michael will not be able to attend, so Larry Hastings and I will be organizing the Summit. If you're on this email, consider yourself invited! *Please* let us know if you plan to attend so we can size the room and other amenities accordingly. The Summit will be held on Wednesday, April 8th, from approximately 10am to 4pm. Location within the convention center is TBD. The Summit is free, although of course you are responsible for travel and hotel costs. If you are planning on attending Pycon, you must still register and pay for that separately, but Pycon attendance is *not* required if you're only interested in the Language Summit. The topics of conversation will be largely "floor led". Python 3.5 will be in alpha release at the time, so I expect it to be a topic of conversation. I have a few ideas for some other topics, and I hope to brainstorm with Larry on how to make the Summit relevant for more people this year. Perhaps we have some plenary sessions in the morning, with breakouts into smaller "working groups" in the afternoon, with a final plenary catch up at the end of the day. Your thoughts, suggestions, and interests are especially important, so please do respond with your feedback. There is a page on the Pycon 2015 site for the Summit, although it's currently unresponsive for me: https://us.pycon.org/2015/events/langsummit/ We'll post additional details, topics, schedules, etc. as they become available. I hope you can join us! Cheers, -Barry

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Re: [python-committers] You are invited to the Pycon 2015 Language Summit
by Steve Dower Jan. 21, 2015

Jan. 21, 2015

Barry Warsaw wrote: > *Please* let us know if you plan to attend so we can size the room and other amenities accordingly. I'll be there. (Hopefully on time this year...) Cheers, Steve

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Schedule for 3.4.3, revised schedule for 3.5.0a1
by Larry Hastings Jan. 15, 2015

Jan. 15, 2015

Python 3.5.0a1 is currently scheduled to be released February 1. Since I'll be on the road that day, the 3.5 team has agreed to push the release back a week. 3.5.0a1 will be tagged Saturday February 7 and released Sunday February 8. This doesn't change any of the other release dates for 3.5.. Since it's about time for a 3.4.3 anyway, we're going to push that out at the same time. 3.4.3rc1 will be tagged Saturday February 7 and released Sunday February 8. 3.4.3 final will follow two weeks later, tagged Saturday February 21 and released Sunday February 22. Get your bug fixes (3.4) and crazy new functionality (3.5) in now! //arry/

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Proposed core developer for contributing to multiprocessing
by Raymond Hettinger Jan. 11, 2015

Jan. 11, 2015

Hello all, I would like to propose Davin Potts as core developer to take on the responsibility for maintaining the multiprocessing package. I've been working with him on and off for over a year and found him to be highly skilled, thoughtful, and responsible. He is willing to devote time to a much neglected part of the standard library (186 open issues). He would be a valued member of the team. I would be happy to serve as his mentor for his early contributions. Raymond > Begin forwarded message: > > Date: December 25, 2014 at 6:46:33 AM PST > Subject: contributing to multiprocessing > From: Davin Potts <davin(a)appliomics.com> > To: Raymond Hettinger <raymond.hettinger(a)gmail.com> > > Hi Raymond -- > > You asked if I'd be interested in becoming a maintainer for the multiprocessing package -- I've continued thinking about what I can do or trust myself to do and I think it'd be cool to make some serious ongoing contributions around multiprocessing. > > A rambling set of thoughts from my looking into multiprocessing.... > > > I've now read many (most?) of Jesse Noller's blog posts relating to multiprocessing, where it stands and where it should go, his calls for help. I've noted Richard Oudkerk's disappearance from the issue comments and mailing lists for a half year or so now -- people are still referencing him, asking for his take, in new issues from as recent as this past week. I'm still a bit unclear on how multiprocessing should ultimately relate to concurrent.futures though that discussion seems to be an ongoing one. Reading through those discussions makes me realize I must come from a different background (massive distributed computing, scientific computing, HPC) -- it's neat to read and try to understand what's going through other peoples' heads here. > > > I've spent a decent chunk of time now going through the outstanding issues against multiprocessing. As best as I can tell, I'd break the current set of 186 issues mentioning multiprocessing down like this: > * 50% are either junk or otherwise simply outdated-needing-proper-cleanup items, > * 30% are advocating changes to docs to cover edge cases they've encountered, > * 15% are Windows-specific problems needing investigation, > * the remaining 5% are more interesting or nasty topics. > > Many of the edge cases people get surprised by in that 30% are complications related to Windows -- I think a goodly chunk of these problems could be prevented if the documentation were re-oriented a bit more (though documentation is not the answer to them all). The thought of documenting every little gotchya or niche these folks encounter is silly and won't help in practical terms. That said, there's enough of these problems to signal that something is definitely sub-optimal. > > The overall volume of Windows-related issues reminds me very much of Trent Nelson telling me at the one point that he figured the real reason he was invited to become a committer was because he didn't at all mind working on Windows issues. In a twisted way, I kind of like sorting out Windows issues too. > > I'd guess it'd take me 30-60 minutes to carefully go through each item in that big 50% chunk, bringing a healthy number to some closure in an iteration or two. That'll take a bit of time to chew through but seems important. > > > > If I'm up for helping work through the backlog of issues, including debugging Windows issues, how should I start? > > > > Davin >

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Hook error when pushing (5.7.0 Message limit reached)
by Antoine Pitrou Jan. 11, 2015

Jan. 11, 2015

Hello, I just got the following error when pushing a changeset: remote: buildbot: change(s) sent successfully remote: Traceback (most recent call last): remote: File "/srv/hg/repos/hooks/hgroundup.py", line 56, in update_issue remote: _update_issue(*args, **kwargs) remote: File "/srv/hg/repos/hooks/hgroundup.py", line 108, in _update_issue remote: s.login(username, password) remote: File "/usr/lib/python2.7/smtplib.py", line 615, in login remote: raise SMTPAuthenticationError(code, resp) remote: SMTPAuthenticationError: (535, '5.7.0 Message limit reached.') remote: error: changegroup.roundup hook raised an exception: (535, '5.7.0 Message limit reached.') remote: Traceback (most recent call last): remote: File "/srv/hg/repos/hooks/mail.py", line 166, in incoming remote: return _incoming(ui, repo, **kwargs) remote: File "/srv/hg/repos/hooks/mail.py", line 156, in _incoming remote: smtp.login(username, ui.config('smtp', 'password', '')) remote: File "/usr/lib/python2.7/smtplib.py", line 615, in login remote: raise SMTPAuthenticationError(code, resp) remote: SMTPAuthenticationError: (535, '5.7.0 Message limit reached.') remote: error: incoming.notify hook raised an exception: (535, '5.7.0 Message limit reached.') Regards Antoine.

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Proposed core developer for contributing to multiprocessing
by Raymond Hettinger Jan. 7, 2015

Jan. 7, 2015

> Did he already contributed to CPython? > What is his nickname on the bug tracker? > Can we see his previous contributions? Davin has already devoted significant time to researching 180+ open issues for multiprocessing and getting up to speed to the history of multiprocessing work. His tracker name is "davin" and his initial contributions are at: http://bugs.python.org/issue22952 http://bugs.python.org/issue23100 Davin is active in the PyData community and a popular Python instructor. He was the Chief Data Scientist at Continuum (one of the large Python consultancy firms along with Enthought and ActiveState). Raymond https://www.linkedin.com/pub/davin-potts/1/b25/606 https://github.com/applio http://www.crunchbase.com/person/davin-potts http://strataconf.com/strata2011/public/schedule/speaker/106479

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