Mailman 3 February 2020 - Python-Dev

PEP 458: Secure PyPI downloads with package signing
by Sumana Harihareswara Feb. 12, 2020

Feb. 12, 2020

Hi! I'm forwarding this on behalf of Marina Moore https://github.com/mnm678 . - Sumana Harihareswara --- PEP 458 ( https://www.python.org/dev/peps/pep-0458/ ) proposes using The Update Framework (TUF) to allow users of PyPI to verify that the packages they install originate from PyPI. Implementing this PEP would provide protection in the event of an attack on PyPI, its mirrors, or the network used to install packages. We started this PEP in 2013, and have recently revised it and restarted … [View More]

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[RELEASE] Python 3.8.2rc1 is now available for testing
by Łukasz Langa Feb. 11, 2020

Feb. 11, 2020

Python 3.8.2rc1 is the release candidate of the second maintenance release of Python 3.8. Go get it here: https://www.python.org/downloads/release/python-382rc1/ <https://www.python.org/downloads/release/python-382rc1/> Assuming no critical problems are found prior to 2020-02-17, the scheduled release date for 3.8.2 (as well as 3.9.0 alpha 4!), no code changes are planned between this release candidate and the final release. That being said, please keep in mind that this is a pre-… [View More]

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vtk
by jf.nasr＠gmail.com Feb. 10, 2020

Feb. 10, 2020

hi i need VtkCollisionDetectionFilter class. But this class is in vtk 8.2.0. when an updated VTK python wheel will be released? i can't compile vtk withe cmake an vs2017. thanks for your help.

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ABI breakage in >= 3.7.4 ?
by Julien Danjou Feb. 10, 2020

Feb. 10, 2020

Hi fellows, I've been hit by a segfault recently in a binary wheel running on Python 3.7.3, but that worked fine on Python 3.7.5. The code was compiled on Python 3.7.5 using manylinux1 Docker images and transformed in a manylinux1 wheel. The segmentation fault back trace did not make any sense, so I guessed it was an ABI change. After running git bisect for a few hours, it turns out that the culprit is the following commit: https://github.com/python/cpython/commit/… [View More]

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extern "C" { ... } in Include/cpython/*.h
by Skip Montanaro Feb. 8, 2020

Feb. 8, 2020

(Apologies. Not sure where to ask this, and I'm not much of a C++ programmer. Maybe I should have just added a comment to the still-open issue.) I just noticed that Nick migrated the guts of Include/frameobject.h to include/cpython/frameobject.h. It's not clear to me that the latter should be #include'd directly from anywhere other than Include/frameobject.h. If that's the case, does the extern "C" stuff still need to be replicated in the lower level file? Won't the scope of the extern "C" … [View More]

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Clarification of unpacking semantics.
by Brandt Bucher Feb. 7, 2020

Feb. 7, 2020

Commits 13bc139 and 8a4cd70 introduced subtle changes in the evaluation logic of unpacking operations. Previously, all elements were evaluated prior to being collected in a container. Now, these operations are interleaved. For example, the code `[*a, *b]` used to evaluate in the order `a` -> `b` -> `a.__iter__()` -> `b.__iter__()`. Now, it evaluates as `a` -> `a.__iter__()` -> `b` -> `b.__iter__()`. I believe this breaking semantic change is a bug, and I've opened a PR to fix … [View More]

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Summary of Python tracker Issues
by Python tracker Feb. 7, 2020

Feb. 7, 2020

ACTIVITY SUMMARY (2020-01-31 - 2020-02-07) Python tracker at https://bugs.python.org/ To view or respond to any of the issues listed below, click on the issue. Do NOT respond to this message. Issues counts and deltas: open 7288 (-12) closed 44042 (+80) total 51330 (+68) Open issues with patches: 2864 Issues opened (43) ================== #39512: expat parser not xml 1.1 (breaks xmlrpclib) - still https://bugs.python.org/issue39512 opened by mforkel #39513: NameError: name '… [View More]

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Re-requesting review of bpo-36226
by Christian Schmidbauer Feb. 4, 2020

Feb. 4, 2020

Hi, we had issued a PR for bpo-36226 almost a year ago, but the PR [1] review has been stalling for 4+ months. Would it be possible to get a new review on this PR? Thanks! [1] https://github.com/python/cpython/pull/12214 -- This email and any attachments are intended for the sole use of the named recipient(s) and contain(s) confidential information that may be proprietary, privileged or copyrighted under applicable law. If you are not the intended recipient, do not read, copy, or … [View More]

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Cassandra-driver acquiring tstate_lock in python3.6/threading.py while doing cluster.connect and got stuck forever
by pankajkumar＠juniper.net Feb. 4, 2020

Feb. 4, 2020

Hi, We are running cassandra using mock cassandra and interacting with python cassandra-driver. We are running python3.6 and we are using latest cassandra-driver i.e cassandra-driver 3.21.0. What we are seeing is when calling cluster.connect it is trying to acquire a tstate_lock from here *https://github.com/python/cpython/blob/3.6/Lib/threading.py#L1072* but we are running another process which has acquired this lock already, here *https://github.com/python/cpython/blob/3.6/Lib/threading.py#… [View More]

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Issue with PR to ipaddress, core review needed by bpo-34788
by Sasha Pavlyuk Feb. 4, 2020

Feb. 4, 2020

Hello I write the same letter third time with a note of despair. 2019-06-03 I have created PR https://github.com/python/cpython/pull/13772 , which adds IPv6 scoped addresses support to ipaddress module. It is critical to everyone, who is dealing with IPv6 networking. For example, in salt project they use patched module. So, it would be very nice to have my changes merged and avoid such a workarounds. Pull request stucked at core review stage. Great thanks to @asvetlov, who began core review, … [View More]

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