Python-Dev March 2019

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83 participants
79 discussions

Python 3.4.10 is now available
by Larry Hastings 18 Mar '19

18 Mar '19

On behalf of the Python development community, I'm proud--if slightly sad--to announce the availability of Python 3.4.10. Python 3.4.10 was released in "security fixes only" mode. It only contains security fixes, not conventional bug fixes, and it is a source-only release. Python 3.4.10 is the final release in the Python 3.4 series. As of this release, the 3.4 branch has been retired, no further changes to 3.4 will be accepted, and no new releases will be made. This is standard Python policy; Python releases get five years of support and are then retired. If you're still using Python 3.4, you should consider upgrading to the current version--3.7.2 as of this writing. Newer versions of Python have many new features, performance improvements, and bug fixes, which should all serve to enhance your Python programming experience. We in the Python core development community thank you for your interest in 3.4, and we wish you all the best! You can find Python 3.4.10 here: https://www.python.org/downloads/release/python-3410/ One I completely finish the Python 3.4.10 release process, I will retire as Python 3.4 Release Manager. I'll still be Python 3.5 Release Manager for another eighteen months or so. Python 3.4 is OVER! https://www.youtube.com/watch?v=YlGqN3AKOsA //arry/

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Python 3.5.7 is now available
by Larry Hastings 18 Mar '19

18 Mar '19

On behalf of the Python development community, I'm chuffed to announce the availability of Python 3.5.7. Python 3.5 is in "security fixes only" mode. It only accepts security fixes, not conventional bug fixes, and the release is source-only. And you can find Python 3.5.7rc1 here: https://www.python.org/downloads/release/python-357/ Best wishes, //arry/

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Anyone can help to proceed these 2 PRs?
by Xin, Peixing 18 Mar '19

18 Mar '19

Hi, Experts: I have 2 PRs pending there to get review for days. Anyone can give your hands? Thanks in advance. BTW, they are about CPython working on VxWorks 7. https://github.com/python/cpython/pull/12118 https://github.com/python/cpython/pull/12305 Thanks, Peixing

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Deferring PEP 536 -- Final Grammar for Literal String Interpolation
by Brett Cannon 16 Mar '19

16 Mar '19

The steering council decided to defer PEP 536 until an implementation is available.

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Rejecting PEP 473: Adding structured data to built-in exceptions
by Brett Cannon 16 Mar '19

16 Mar '19

The steering council felt the PEP was too broad and not focused enough. Discussions about adding more attributes to built-in exceptions can continue on the issue tracker on a per-exception basis (and obviously here for any broader points, e.g. performance implications as I know that has come up before when the idea of storing relevant objects on exceptions). Thanks to Sebastian Kreft for taking the time to write the PEP in the first place.

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PEP 581: Using GitHub Issues for CPython
by Mariatta 16 Mar '19

16 Mar '19

I'd like to formally present to Python-dev PEP 581: Using GitHub Issues for CPython Full text: https://www.python.org/dev/peps/pep-0581/ This is my first PEP, and in my opinion it is ready for wider discussion. I don't know if it is "ready for pronouncement" so I'm hoping to get more guidance about it from other experienced core devs and steering council. I also plan to open discussion about PEP 581 at Python Language Summit, and since I'm one-half of the language summit chairs, it is quite likely this discussion will happen. On that note, you can still sign up for the language summit here: https://us.pycon.org/2019/events/language-summit/ Note that unlike previous years, you do not need to be invited by a core developer. Łukasz and I will be curating the content, and we want to include more diverse perspectives into language summit discussions. Thanks. ᐧ

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Initial updates to PEP 1 for Steering Council based governance
by Nick Coghlan 16 Mar '19

16 Mar '19

Hi folks, Brett recently posted about the update to PEP 1 that added the PEP Sponsor role, but folks may not have noticed that we've also made the amendments needed to allow the PEP decision making process to restart: https://github.com/python/peps/pull/896/files This is the smallest change to PEP 1 that we consider potentially viable: handling all PEPs through the BDFL-Delegate model, with the Steering Council's primary involvement being to appoint the delegates (or accept their volunteering), once a PEP has reached the point of being actively reviewed. We'll also act as an ongoing consulting resource for anyone that takes on the BD role for a PEP. We're currently working through the follow-up activity, which is to review the list of Draft PEPs, and work out which ones are at a point where assigning a BDFL-Delegate makes sense. Cheers, Nick.

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Rejecting PEP 542 -- Dot Notation Assignment In Function Header
by Brett Cannon 15 Mar '19

15 Mar '19

The steering council has decided to reject PEP 542 as the idea never seemed to gain traction. Thanks to Markus Meskanen for taking the time to write the PEP.

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Summary of Python tracker Issues
by Python tracker 15 Mar '19

15 Mar '19

ACTIVITY SUMMARY (2019-03-08 - 2019-03-15) 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 7048 (+17) closed 41009 (+46) total 48057 (+63) Open issues with patches: 2798 Issues opened (48) ================== #4459: bdist_rpm should enable --fix-python by default https://bugs.python.org/issue4459 reopened by vstinner #10948: Trouble with dir_util created dir cache https://bugs.python.org/issue10948 reopened by eric.araujo #30040: new empty dict can be more small https://bugs.python.org/issue30040 reopened by rhettinger #33376: [pysqlite] Duplicate rows can be returned after rolling back a https://bugs.python.org/issue33376 reopened by benjamin.peterson #36245: PCBuild/build.bat errors, probably from space characters in pa https://bugs.python.org/issue36245 opened by Jess #36246: csv.writer lineterminator affects csv escaping https://bugs.python.org/issue36246 opened by flow2k #36247: zipfile - extract truncates (existing) file when bad password https://bugs.python.org/issue36247 opened by CristiFati #36250: pdb: interaction might cause "ValueError: signal only works in https://bugs.python.org/issue36250 opened by blueyed #36253: Use after free in ctypes test suite https://bugs.python.org/issue36253 opened by btharper #36254: Fix invalid uses of %d in format strings in C https://bugs.python.org/issue36254 opened by serhiy.storchaka #36255: Provide a simple way to delete and edit python's welcome messa https://bugs.python.org/issue36255 opened by benp #36256: parser module fails on legal input https://bugs.python.org/issue36256 opened by A. Skrobov #36257: configure with --with-icc --with-cxx-main=icpc https://bugs.python.org/issue36257 opened by aminiussi #36258: Incorrect docstring of the ssl module https://bugs.python.org/issue36258 opened by Ofekmeister #36259: exception text is being sourced from the wrong file https://bugs.python.org/issue36259 opened by rhubarbdog x #36260: Cpython/Lib vulnerability found and request a patch submission https://bugs.python.org/issue36260 opened by krnick #36261: email examples should not gratuitously mess with preamble https://bugs.python.org/issue36261 opened by era #36263: test_hashlib.test_scrypt() fails on Fedora 29 https://bugs.python.org/issue36263 opened by vstinner #36265: Remove ABCs from collections https://bugs.python.org/issue36265 opened by jwilk #36266: Which module could not be found? https://bugs.python.org/issue36266 opened by Phillip.M.Feldman(a)gmail.com #36267: User input to argparse raises Index_Error: "-a=" on a 'store_ https://bugs.python.org/issue36267 opened by paul.j3 #36268: Change default tar format to modern POSIX 2001 (pax) for bette https://bugs.python.org/issue36268 opened by CAM-Gerlach #36270: DOC: Add link to sys.exc_info for "Reference Manual" https://bugs.python.org/issue36270 opened by cheryl.sabella #36271: '_io.TextIOWrapper' object has no attribute 'mode' https://bugs.python.org/issue36271 opened by nemeskeyd #36272: Recursive logging crashes Interpreter in Python 3 https://bugs.python.org/issue36272 opened by Saim Raza #36273: test_thread leaks a core dump on PPC64 AIX 3.x https://bugs.python.org/issue36273 opened by vstinner #36274: http.client cannot send non-ASCII request lines https://bugs.python.org/issue36274 opened by tburke #36275: DOC: venv.create doesn't include prompt parameter https://bugs.python.org/issue36275 opened by cheryl.sabella #36276: Python urllib CRLF injection vulnerability https://bugs.python.org/issue36276 opened by ragdoll.guo #36277: pdb's recursive debug command is not listed in the docs https://bugs.python.org/issue36277 opened by Antony.Lee #36279: os.wait3() leaks some uninitialized stack when no processes ex https://bugs.python.org/issue36279 opened by dw #36281: OSError: handle is closed for ProcessPoolExecutor and run_in_e https://bugs.python.org/issue36281 opened by basnijholt #36283: eval is needlessly limited https://bugs.python.org/issue36283 opened by bup #36285: Integer overflow in array.array.remove() https://bugs.python.org/issue36285 opened by sth #36286: Random failure in test_idle https://bugs.python.org/issue36286 opened by serhiy.storchaka #36287: Make ast.dump() not output optional default fields https://bugs.python.org/issue36287 opened by serhiy.storchaka #36290: _ast.ast_type_init does not handle args and kwargs correctly. https://bugs.python.org/issue36290 opened by remi.lapeyre #36292: Coverity scan: Resource leaks in longobject.c https://bugs.python.org/issue36292 opened by cstratak #36293: Nonblocking read sys.stdin raises error https://bugs.python.org/issue36293 opened by cykerway #36295: Need to yield (sleep(0)) twice in asyncio https://bugs.python.org/issue36295 opened by Assaf Dayan #36297: Remove unicode_internal codec https://bugs.python.org/issue36297 opened by inada.naoki #36298: Lib/pyclbr.py crashes when the package spec cannot be determin https://bugs.python.org/issue36298 opened by mental #36299: Deprecate 'u' type in array module https://bugs.python.org/issue36299 opened by inada.naoki #36300: eval of generator expressions cannot access local variables https://bugs.python.org/issue36300 opened by Martin Hosken #36301: Add _Py_PreInitialize() function https://bugs.python.org/issue36301 opened by vstinner #36302: distutils creates unreproducible .so files https://bugs.python.org/issue36302 opened by bmwiedemann #36304: When using bz2 and lzma in mode 'wt', the BOM is not written https://bugs.python.org/issue36304 opened by janluke #36305: Inconsistent behavior of pathlib.WindowsPath with drive paths https://bugs.python.org/issue36305 opened by kmaork Most recent 15 issues with no replies (15) ========================================== #36302: distutils creates unreproducible .so files https://bugs.python.org/issue36302 #36299: Deprecate 'u' type in array module https://bugs.python.org/issue36299 #36298: Lib/pyclbr.py crashes when the package spec cannot be determin https://bugs.python.org/issue36298 #36295: Need to yield (sleep(0)) twice in asyncio https://bugs.python.org/issue36295 #36290: _ast.ast_type_init does not handle args and kwargs correctly. https://bugs.python.org/issue36290 #36285: Integer overflow in array.array.remove() https://bugs.python.org/issue36285 #36281: OSError: handle is closed for ProcessPoolExecutor and run_in_e https://bugs.python.org/issue36281 #36279: os.wait3() leaks some uninitialized stack when no processes ex https://bugs.python.org/issue36279 #36275: DOC: venv.create doesn't include prompt parameter https://bugs.python.org/issue36275 #36274: http.client cannot send non-ASCII request lines https://bugs.python.org/issue36274 #36270: DOC: Add link to sys.exc_info for "Reference Manual" https://bugs.python.org/issue36270 #36267: User input to argparse raises Index_Error: "-a=" on a 'store_ https://bugs.python.org/issue36267 #36258: Incorrect docstring of the ssl module https://bugs.python.org/issue36258 #36257: configure with --with-icc --with-cxx-main=icpc https://bugs.python.org/issue36257 #36253: Use after free in ctypes test suite https://bugs.python.org/issue36253 Most recent 15 issues waiting for review (15) ============================================= #36302: distutils creates unreproducible .so files https://bugs.python.org/issue36302 #36301: Add _Py_PreInitialize() function https://bugs.python.org/issue36301 #36297: Remove unicode_internal codec https://bugs.python.org/issue36297 #36292: Coverity scan: Resource leaks in longobject.c https://bugs.python.org/issue36292 #36287: Make ast.dump() not output optional default fields https://bugs.python.org/issue36287 #36285: Integer overflow in array.array.remove() https://bugs.python.org/issue36285 #36279: os.wait3() leaks some uninitialized stack when no processes ex https://bugs.python.org/issue36279 #36274: http.client cannot send non-ASCII request lines https://bugs.python.org/issue36274 #36272: Recursive logging crashes Interpreter in Python 3 https://bugs.python.org/issue36272 #36263: test_hashlib.test_scrypt() fails on Fedora 29 https://bugs.python.org/issue36263 #36254: Fix invalid uses of %d in format strings in C https://bugs.python.org/issue36254 #36253: Use after free in ctypes test suite https://bugs.python.org/issue36253 #36250: pdb: interaction might cause "ValueError: signal only works in https://bugs.python.org/issue36250 #36247: zipfile - extract truncates (existing) file when bad password https://bugs.python.org/issue36247 #36245: PCBuild/build.bat errors, probably from space characters in pa https://bugs.python.org/issue36245 Top 10 most discussed issues (10) ================================= #36085: Enable better DLL resolution https://bugs.python.org/issue36085 18 msgs #30040: new empty dict can be more small https://bugs.python.org/issue30040 15 msgs #36010: Please provide a .zip Windows release of Python that is not cr https://bugs.python.org/issue36010 10 msgs #36272: Recursive logging crashes Interpreter in Python 3 https://bugs.python.org/issue36272 8 msgs #35121: Cookie domain check returns incorrect results https://bugs.python.org/issue35121 7 msgs #35647: Cookie path check returns incorrect results https://bugs.python.org/issue35647 7 msgs #36276: Python urllib CRLF injection vulnerability https://bugs.python.org/issue36276 7 msgs #36256: parser module fails on legal input https://bugs.python.org/issue36256 6 msgs #36263: test_hashlib.test_scrypt() fails on Fedora 29 https://bugs.python.org/issue36263 6 msgs #21314: Document '/' in signatures https://bugs.python.org/issue21314 5 msgs Issues closed (44) ================== #12974: array module: deprecate '__int__' conversion support for array https://bugs.python.org/issue12974 closed by serhiy.storchaka #26018: documentation of ZipFile file name encoding https://bugs.python.org/issue26018 closed by serhiy.storchaka #27916: Use time.monotonic instead of time.time where appropriate https://bugs.python.org/issue27916 closed by cheryl.sabella #28956: return list of modes for a multimodal distribution instead of https://bugs.python.org/issue28956 closed by steven.daprano #31973: Incomplete DeprecationWarning for async/await keywords https://bugs.python.org/issue31973 closed by barry #32846: Deletion of large sets of strings is extra slow https://bugs.python.org/issue32846 closed by inada.naoki #33002: Making a class formattable as hex/oct integer with printf-styl https://bugs.python.org/issue33002 closed by serhiy.storchaka #35132: python-gdb error: Python Exception <class 'RuntimeError'> Type https://bugs.python.org/issue35132 closed by vstinner #35661: Store the venv prompt in pyvenv.cfg https://bugs.python.org/issue35661 closed by cheryl.sabella #35807: Update bundled pip to 19.0 https://bugs.python.org/issue35807 closed by ncoghlan #35830: building multiple (binary) packages from a single project https://bugs.python.org/issue35830 closed by stefan #35832: Installation error https://bugs.python.org/issue35832 closed by steve.dower #35843: importlib.util docs for namespace packages innaccurate https://bugs.python.org/issue35843 closed by brett.cannon #35854: EnvBuilder and venv symlinks do not work on Windows on 3.7.2 https://bugs.python.org/issue35854 closed by steve.dower #35892: Fix awkwardness of statistics.mode() for multimodal datasets https://bugs.python.org/issue35892 closed by rhettinger #35944: Python 3.7 install error https://bugs.python.org/issue35944 closed by steve.dower #36029: Use title-case HTTP header fields https://bugs.python.org/issue36029 closed by mdk #36042: Setting __init_subclass__ and __class_getitem__ methods are in https://bugs.python.org/issue36042 closed by inada.naoki #36174: Remove licenseUrl field from nuget packages https://bugs.python.org/issue36174 closed by steve.dower #36176: Fix IDLE Autocomplete / Calltip Window Colors https://bugs.python.org/issue36176 closed by terry.reedy #36212: [2.7] Coverity scan: Modules/_hotshot.c , Variable "s1" going https://bugs.python.org/issue36212 closed by vstinner #36216: CVE-2019-9636: urlsplit does not handle NFKC normalization https://bugs.python.org/issue36216 closed by steve.dower #36229: Avoid unnecessary copies for list, set, and bytearray ops. https://bugs.python.org/issue36229 closed by rhettinger #36234: test_os: add tests for invalid uid type https://bugs.python.org/issue36234 closed by vstinner #36241: MD5 checksum is not valid for v2.7.16 "Windows x86-64 MSI inst https://bugs.python.org/issue36241 closed by SilentGhost #36244: Lock release fails under windows https://bugs.python.org/issue36244 closed by Konrad Ciecierski #36248: document about `or`, `and` operator. https://bugs.python.org/issue36248 closed by SilentGhost #36249: f-string should be the default placeholder https://bugs.python.org/issue36249 closed by serhiy.storchaka #36251: Invalid format specifiers in MatchObject and StdPrinter repr https://bugs.python.org/issue36251 closed by serhiy.storchaka #36252: update to Unicode 12 https://bugs.python.org/issue36252 closed by benjamin.peterson #36262: Coverity scan: Python/dtoa.c resource leak https://bugs.python.org/issue36262 closed by vstinner #36264: os.path.expanduser should not use HOME on windows https://bugs.python.org/issue36264 closed by steve.dower #36269: post install in setup.py does not work when executed through p https://bugs.python.org/issue36269 closed by sabakauser #36278: Truncate method https://bugs.python.org/issue36278 closed by josh.r #36280: Add kind field to ast.Constant, to distinguish u"..." from ".. https://bugs.python.org/issue36280 closed by gvanrossum #36282: Not accurate error message for exact number of positional argu https://bugs.python.org/issue36282 closed by serhiy.storchaka #36284: importlib.import_module() not thread safe if Exception is rais https://bugs.python.org/issue36284 closed by serhiy.storchaka #36288: Incorrect answer when using round() https://bugs.python.org/issue36288 closed by zach.ware #36289: [2.7] Coverity scan: Modules/_io/bufferedio.c leaked_storage: https://bugs.python.org/issue36289 closed by vstinner #36291: [2.7] Coverity Scan: Modules/_json.c: leaked_storage: Variable https://bugs.python.org/issue36291 closed by vstinner #36294: `io.BufferedIOBase` returns `None` https://bugs.python.org/issue36294 closed by martin.panter #36296: distutils.version.StrictVersion objects cannot be compared wit https://bugs.python.org/issue36296 closed by eric.araujo #36303: Trying to change values (fe. "To", "From") of email.mime.text. https://bugs.python.org/issue36303 closed by Fotoblysk #36306: inspect.signature(math.log) raises ValueError https://bugs.python.org/issue36306 closed by remi.lapeyre

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(Licensing question) backport of shutil.copyfile() functionality
by Giampaolo Rodola' 15 Mar '19

15 Mar '19

Hello, some time ago I contributed a couple of patches to speedup shutil.copy*() functions: https://bugs.python.org/issue33671 https://bugs.python.org/issue33695 I would like to backport both functionalities so that they can be used on Python 2.7 and <3.8 and put it on PYPI. In order to do so I will basically have to copy some parts of shutil module (copytree() function + the unit-tests I added in BPO-33671 and a couple of other things). Are there constraints regarding this in terms of license? Am I supposed to use GPL? (I was thinking about using MIT) Note: in this package called "zerocopy" I will probably want to expose other functionalities such as tee(), splice() and CopyFileEx and TransmitFile on Windows, so it's probably gonna be half a backport and half a brand new project. Thanks. -- Giampaolo - http://grodola.blogspot.com

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Python-Dev March 2019