Mailman 3 September 2015 - Python-Dev

congrats on 3.5! Alas, windows 7 users are having problems installing it

by Laura Creighton

webmaster has already heard from 4 people who cannot install it. I sent them to the bug tracker or to python-list but they seem not to have gone either place. Is there some guide I should be sending them to, 'how to debug installation problems'? Laura

4 months, 1 week

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VS 2010 compiler

by Chris Barker - NOAA Federal

As I understand it, the MS VS2010 compiler is required (or at least best practice) for compiling Python extensions for the python.org Windows builds of py 3.4 and ?[1] However, MS now makes it very hard (impossible?) to download VS2010 Express ( or Community, or whatever the free as in beer version is called). I realize that this is not python-dev's responsibility, but if there is any way to either document where it can be found, or put a bit of pressure on MS to make it available, as they have for VS2008 and py2.7, that would be great. Sorry to bug this list, I didn't know where else to reach out to. -Chris [1] it's actually prefer hard to find out which compiler version is used for which python version. And has been for years. Would a patch to the docs, probably here: https://docs.python.org/3.4/using/windows.html#compiling-python-on-windows Be considered?

4 years, 3 months

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Washington DC Python sprint report

by Barry Warsaw

Yesterday (27-Sep-2015), four Washington DC area Python developers got together for a local Python hacking sprint. Andrew, Eric, Jason, and I were joined remotely by the esteemed R. David Murray. We did stuff and had fun! We hope to do stuff and have fun again! If you want to join us for stuff and fun next time, please get in touch. Here's a write-up of the sprint: https://gitlab.com/python-smtpd-hackers/aiosmtpd/wikis/2015-09-27-hackfest Special thanks to the PSF and Brian Curtin for sponsoring the sprint. Cheers, -Barry

4 years, 3 months

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Committing a bug fix

by Alexander Belopolsky

Can someone remind me which branches regular (non-security) bug fixes go to these days? See <http://bugs.python.org/issue23600> for context.

4 years, 3 months

7
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xunit unittest.TestSuite

by vijayram

Hi All, I am facing this same issue described here: https://github.com/nose-devs/nose/issues/542 <https://github.com/nose-devs/nose/issues/542> any alternative or solution to this issue that anyone is aware of... please kindly suggest... Thank you, VJ

4 years, 3 months

2
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Summary of Python tracker Issues

by Python tracker

ACTIVITY SUMMARY (2015-09-18 - 2015-09-25) Python tracker at http://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 5142 (+12) closed 31849 (+51) total 36991 (+63) Open issues with patches: 2286 Issues opened (47) ================== #23329: _ssl cannot be compiled with LibreSSL anymore (on OpenBSD 5.5) http://bugs.python.org/issue23329 reopened by haypo #24915: Profile Guided Optimization improvements (better training, llv http://bugs.python.org/issue24915 reopened by haypo #25170: 3.5.0 documentation archives missing http://bugs.python.org/issue25170 opened by Arfrever #25171: does not build on OpenBSD with no value defined for PY_GETENTR http://bugs.python.org/issue25171 opened by rpointel #25172: Unix-only crypt should not be present on Windows. http://bugs.python.org/issue25172 opened by terry.reedy #25173: IDLE - several common dialogs don't have correct parent set http://bugs.python.org/issue25173 opened by markroseman #25175: Documentation-Tkinter Clarify module spelling change in Python http://bugs.python.org/issue25175 opened by Rishit Bansal #25177: OverflowError in statistics.mean when summing large floats http://bugs.python.org/issue25177 opened by David MacIver #25178: IDLE: search regex errors should be in/attached to search dial http://bugs.python.org/issue25178 opened by markroseman #25179: PEP 498 f-strings need to be documented http://bugs.python.org/issue25179 opened by eric.smith #25181: Tests failed in nondecodable directory http://bugs.python.org/issue25181 opened by serhiy.storchaka #25182: python -v crashes in nonencodable directory http://bugs.python.org/issue25182 opened by serhiy.storchaka #25183: python -m inspect --details fails in nondecodable directory http://bugs.python.org/issue25183 opened by serhiy.storchaka #25184: "python -m pydoc -w" fails in nondecodable directory http://bugs.python.org/issue25184 opened by serhiy.storchaka #25185: Inconsistency between venv and site http://bugs.python.org/issue25185 opened by serhiy.storchaka #25186: Don't duplicate _verbose_message in importlib._bootstrap and _ http://bugs.python.org/issue25186 opened by brett.cannon #25187: bdist_rpm fails due to wrong hardcoded assumption about RPM fi http://bugs.python.org/issue25187 opened by dpward #25188: regrtest.py improvement for Profile Guided Optimization builds http://bugs.python.org/issue25188 opened by alecsandru.patrascu #25190: Define StringIO seek offset as code point offset http://bugs.python.org/issue25190 opened by martin.panter #25191: test_getsetlocale_issue1813 failed on OpenBSD http://bugs.python.org/issue25191 opened by rpointel #25193: itertools.accumulate should have an optional initializer argum http://bugs.python.org/issue25193 opened by Alun Champion #25194: Register of Financial Interests for core contributors http://bugs.python.org/issue25194 opened by ncoghlan #25195: mock.ANY doesn't match mock.MagicMock() object http://bugs.python.org/issue25195 opened by felixonmars #25196: Installer>Install in user folder by default when you check: fo http://bugs.python.org/issue25196 opened by Abdullah Hilson #25197: Allow documentation switcher to change url to /3/ and /dev/ http://bugs.python.org/issue25197 opened by mbussonn #25198: Idle: improve idle.html help viewer. http://bugs.python.org/issue25198 opened by terry.reedy #25203: Incorrect handling MemoryError in readline.set_completer_delim http://bugs.python.org/issue25203 opened by serhiy.storchaka #25204: Confusing (?) warning when run deprecated module as script http://bugs.python.org/issue25204 opened by serhiy.storchaka #25205: setattr accepts invalid identifiers http://bugs.python.org/issue25205 opened by W deW #25207: ICC compiler warnings http://bugs.python.org/issue25207 opened by haypo #25209: Append space after completed keywords http://bugs.python.org/issue25209 opened by serhiy.storchaka #25210: Special-case NoneType() in do_richcompare() http://bugs.python.org/issue25210 opened by ezio.melotti #25211: Error message formatting errors in int object unit-test script http://bugs.python.org/issue25211 opened by s-wakaba #25216: Warnings stacklevel frames to skip http://bugs.python.org/issue25216 opened by Jim.Jewett #25217: Method cache can crash at shutdown in _PyType_Lookup http://bugs.python.org/issue25217 opened by pitrou #25218: Automate creation of idlelib/help.html from Doc/.../idle.html http://bugs.python.org/issue25218 opened by terry.reedy #25219: Update doc for Idle command line options. http://bugs.python.org/issue25219 opened by terry.reedy #25220: Enhance and refactor test.regrtest (convert regrtest.py to a p http://bugs.python.org/issue25220 opened by haypo #25221: PyLong_FromLong() potentially returns irregular object when sm http://bugs.python.org/issue25221 opened by s-wakaba #25222: 3.5.0 regression - Fatal Python error: Cannot recover from sta http://bugs.python.org/issue25222 opened by behackett #25224: Replace Idle's README.txt with annotated file list http://bugs.python.org/issue25224 opened by terry.reedy #25226: "suffix" attribute not documented in logging.TimedRotatingFile http://bugs.python.org/issue25226 opened by NobilisVir #25227: Optimize ASCII/latin1 encoder with surrogateescape error handl http://bugs.python.org/issue25227 opened by haypo #25228: Regression in cookie parsing with brackets and quotes http://bugs.python.org/issue25228 opened by Tim.Graham #25229: distutils doesn't add "-Wl," prefix to "-R" on Linux if the C http://bugs.python.org/issue25229 opened by Calvin Walton #25230: Unix datagram sockets not supported http://bugs.python.org/issue25230 opened by rb #25232: CGIRequestHandler behave incorrectly with query component cons http://bugs.python.org/issue25232 opened by xiang.zhang Most recent 15 issues with no replies (15) ========================================== #25232: CGIRequestHandler behave incorrectly with query component cons http://bugs.python.org/issue25232 #25229: distutils doesn't add "-Wl," prefix to "-R" on Linux if the C http://bugs.python.org/issue25229 #25228: Regression in cookie parsing with brackets and quotes http://bugs.python.org/issue25228 #25226: "suffix" attribute not documented in logging.TimedRotatingFile http://bugs.python.org/issue25226 #25221: PyLong_FromLong() potentially returns irregular object when sm http://bugs.python.org/issue25221 #25218: Automate creation of idlelib/help.html from Doc/.../idle.html http://bugs.python.org/issue25218 #25217: Method cache can crash at shutdown in _PyType_Lookup http://bugs.python.org/issue25217 #25216: Warnings stacklevel frames to skip http://bugs.python.org/issue25216 #25204: Confusing (?) warning when run deprecated module as script http://bugs.python.org/issue25204 #25203: Incorrect handling MemoryError in readline.set_completer_delim http://bugs.python.org/issue25203 #25197: Allow documentation switcher to change url to /3/ and /dev/ http://bugs.python.org/issue25197 #25195: mock.ANY doesn't match mock.MagicMock() object http://bugs.python.org/issue25195 #25191: test_getsetlocale_issue1813 failed on OpenBSD http://bugs.python.org/issue25191 #25187: bdist_rpm fails due to wrong hardcoded assumption about RPM fi http://bugs.python.org/issue25187 #25183: python -m inspect --details fails in nondecodable directory http://bugs.python.org/issue25183 Most recent 15 issues waiting for review (15) ============================================= #25232: CGIRequestHandler behave incorrectly with query component cons http://bugs.python.org/issue25232 #25229: distutils doesn't add "-Wl," prefix to "-R" on Linux if the C http://bugs.python.org/issue25229 #25228: Regression in cookie parsing with brackets and quotes http://bugs.python.org/issue25228 #25227: Optimize ASCII/latin1 encoder with surrogateescape error handl http://bugs.python.org/issue25227 #25221: PyLong_FromLong() potentially returns irregular object when sm http://bugs.python.org/issue25221 #25220: Enhance and refactor test.regrtest (convert regrtest.py to a p http://bugs.python.org/issue25220 #25211: Error message formatting errors in int object unit-test script http://bugs.python.org/issue25211 #25209: Append space after completed keywords http://bugs.python.org/issue25209 #25204: Confusing (?) warning when run deprecated module as script http://bugs.python.org/issue25204 #25203: Incorrect handling MemoryError in readline.set_completer_delim http://bugs.python.org/issue25203 #25198: Idle: improve idle.html help viewer. http://bugs.python.org/issue25198 #25197: Allow documentation switcher to change url to /3/ and /dev/ http://bugs.python.org/issue25197 #25194: Register of Financial Interests for core contributors http://bugs.python.org/issue25194 #25188: regrtest.py improvement for Profile Guided Optimization builds http://bugs.python.org/issue25188 #25187: bdist_rpm fails due to wrong hardcoded assumption about RPM fi http://bugs.python.org/issue25187 Top 10 most discussed issues (10) ================================= #25210: Special-case NoneType() in do_richcompare() http://bugs.python.org/issue25210 17 msgs #24915: Profile Guided Optimization improvements (better training, llv http://bugs.python.org/issue24915 15 msgs #18967: Find a less conflict prone approach to Misc/NEWS http://bugs.python.org/issue18967 12 msgs #25194: Register of Financial Interests for core contributors http://bugs.python.org/issue25194 12 msgs #25220: Enhance and refactor test.regrtest (convert regrtest.py to a p http://bugs.python.org/issue25220 12 msgs #25222: 3.5.0 regression - Fatal Python error: Cannot recover from sta http://bugs.python.org/issue25222 12 msgs #24870: Optimize ascii and latin1 decoder with surrogateescape and sur http://bugs.python.org/issue24870 10 msgs #25205: setattr accepts invalid identifiers http://bugs.python.org/issue25205 10 msgs #16701: Docs missing the behavior of += (in-place add) for lists. http://bugs.python.org/issue16701 8 msgs #25177: OverflowError in statistics.mean when summing large floats http://bugs.python.org/issue25177 8 msgs Issues closed (50) ================== #4918: Windows installer created with Python X.Y does not work with P http://bugs.python.org/issue4918 closed by eryksun #16893: Generate Idle help from Doc/library/idle.rst http://bugs.python.org/issue16893 closed by terry.reedy #19143: Finding the Windows version getting messier (detect windows 8. http://bugs.python.org/issue19143 closed by steve.dower #22820: RESTART line with no output http://bugs.python.org/issue22820 closed by terry.reedy #23484: SemLock acquire() keyword arg 'blocking' is invalid http://bugs.python.org/issue23484 closed by berker.peksag #23630: support multiple hosts in create_server/start_server http://bugs.python.org/issue23630 closed by haypo #23979: Multiprocessing Pool.map pickles arguments passed to workers http://bugs.python.org/issue23979 closed by davin #24779: Python/ast.c: decode_unicode is never called with rawmode=True http://bugs.python.org/issue24779 closed by eric.smith #24801: right-mouse click in IDLE on Mac doesn't work http://bugs.python.org/issue24801 closed by terry.reedy #24861: deprecate importing components of IDLE http://bugs.python.org/issue24861 closed by terry.reedy #24894: iso-8859-11 missing from codecs table http://bugs.python.org/issue24894 closed by ezio.melotti #24965: Implement PEP 498: Literal String Formatting http://bugs.python.org/issue24965 closed by eric.smith #25047: xml.etree.ElementTree encoding declaration should be capital ( http://bugs.python.org/issue25047 closed by martin.panter #25057: Make parameter of io.base to be positional and keyword http://bugs.python.org/issue25057 closed by martin.panter #25081: Windows installer Upgrade->Customize->Back goes to Install pag http://bugs.python.org/issue25081 closed by steve.dower #25084: remove semi-busy loop in py2.7 threading.Condition.wait(timeou http://bugs.python.org/issue25084 closed by pitrou #25085: Windows x86-64 embeddable zip file contains test directorys http://bugs.python.org/issue25085 closed by python-dev #25086: Windows x86-64 embeddable zip file, lot of big EXE files in di http://bugs.python.org/issue25086 closed by steve.dower #25092: Regression: test_datetime fails on 3.5, Win 7, works on 3.4 http://bugs.python.org/issue25092 closed by steve.dower #25101: test_zipfile failure when run by unprivileged user with instal http://bugs.python.org/issue25101 closed by serhiy.storchaka #25102: Windows installer: 'precompile standard library' option should http://bugs.python.org/issue25102 closed by steve.dower #25103: 3.5.0 installed standard library on Windows has LF line ending http://bugs.python.org/issue25103 closed by steve.dower #25112: Windows installer assigns non-existent icons to Python file ty http://bugs.python.org/issue25112 closed by steve.dower #25114: asyncio: add ssl_object extra info http://bugs.python.org/issue25114 closed by haypo #25124: No single .msi available for 3.5 release http://bugs.python.org/issue25124 closed by steve.dower #25126: Non-web installer fails without a connection when doing debug http://bugs.python.org/issue25126 closed by steve.dower #25133: Clarify that the constants in selectors are module-level http://bugs.python.org/issue25133 closed by brett.cannon #25138: test_socket: socket.EAI_NODATA doesn't exist on FreeBSD http://bugs.python.org/issue25138 closed by haypo #25145: urllib how-to should be updated to remove PyGoogle http://bugs.python.org/issue25145 closed by benjamin.peterson #25148: Windows registry PythonCore key changed inconsistent with othe http://bugs.python.org/issue25148 closed by steve.dower #25162: Windows installation does not appear in list of installed appl http://bugs.python.org/issue25162 closed by steve.dower #25169: multiprocessing docs example still refs os.getppid as unix-onl http://bugs.python.org/issue25169 closed by berker.peksag #25174: Backspace Escape Character at End of String http://bugs.python.org/issue25174 closed by martin.panter #25176: Link to urllib.parse.parse_qsl, not parse_qs, from cgi.parse_q http://bugs.python.org/issue25176 closed by martin.panter #25180: Tools/parser/unparse.py needs to be updated for f-strings http://bugs.python.org/issue25180 closed by eric.smith #25189: An issue about os.access http://bugs.python.org/issue25189 closed by serhiy.storchaka #25192: deque append and appendleft should return value if maxlen set http://bugs.python.org/issue25192 closed by rhettinger #25199: Idle: add cross-references from and to macosxSupport http://bugs.python.org/issue25199 closed by terry.reedy #25200: bug on re.search using the char ,-: http://bugs.python.org/issue25200 closed by serhiy.storchaka #25201: lock of multiprocessing.Value is not a keyword-only argument http://bugs.python.org/issue25201 closed by berker.peksag #25202: Windows: with-statement doesn't release file handle after exce http://bugs.python.org/issue25202 closed by eryksun #25206: PEP 498: Minor mistakes/outdateness http://bugs.python.org/issue25206 closed by eric.smith #25208: improvements to the asyncio documentation http://bugs.python.org/issue25208 closed by asvetlov #25212: Remove the double spaces in the C-API Intro http://bugs.python.org/issue25212 closed by ezio.melotti #25213: Regression: Python 3.5.0 shutil.copy2 doesn't raise Permission http://bugs.python.org/issue25213 closed by steve.dower #25214: asyncio ssl transport regression http://bugs.python.org/issue25214 closed by haypo #25215: Simple extension to iter(): iter() returns empty generator http://bugs.python.org/issue25215 closed by brett.cannon #25223: Statically or dynamically linked to the VC++runtime ? or how http://bugs.python.org/issue25223 closed by acx01bc #25225: Idle doc: redo Syntax Colors section http://bugs.python.org/issue25225 closed by terry.reedy #25231: Argparse module and escape sequence (special symbols) in argum http://bugs.python.org/issue25231 closed by martin.panter

4 years, 4 months

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PEP 495 accepted

by Guido van Rossum

Just so people know, over at the datetime-sig I've accepted PEP 495, which adds a fold flag to datetime objects to distinguish ambiguous times. This enables roundripping of conversions for those times where the local clock is moved backward (creating ambiguous times that could not be distinguished before). I would like to thank Alexander and Tim for their unrelenting work on this. The idea seems simple, but the details were excruciatingly hard to get right, given the strict backwards compatibility requirements. There may well be additional beneficial changes to the datetime module. The datetime-sig is now open for their discussion. However, proposals that break backwards compatibility are a waste of everybody's time, so be prepared to explain how your proposal does not break existing code that works under Python 3.5. -- --Guido van Rossum (python.org/~guido)

4 years, 4 months

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Make stacklevel=2 by default in warnings.warn()

by Serhiy Storchaka

For now the default value of the stacklevel parameter in warnings.warn() is 1. But in most cases stacklevel=2 is required, sometimes >2, and I don't know cases that need stacklevel=1. I propose to make the default value of stacklevel to be 2. I think that unlikely this will break existing code. But rather can fix existing bugs. If stacklevel=1 is required (I don't know cases), it can be explicitly specified.

4 years, 4 months

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PEP 498 (interpolated f-string) tweak

by Eric V. Smith

While finishing up the implementation of PEP 498, I realized that the PEP has an error. It says that this code: f'abc{expr1:spec1}{expr2!r:spec2}def{expr3:!s}ghi' Is equivalent to: 'abc' + expr1.__format__(spec1) + repr(expr2).__format__(spec2) + 'def' + str(expr3).__format__('') + 'ghi' But that's not correct. The right way to call __format__ is: type(expr1).__format__(expr1, spec1) That is, the lookup of __format__ is done on the type, not the instance. Instead of calling __format__, I've changed the code generator to call format(expr1, spec1). As an optimization, I might add special opcodes to deal with this and string concatenation, but that's for another day (if ever). I've posted a new version of the code in issue 24965. I'll update the PEP itself sometime this weekend.

4 years, 4 months

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Re: [Python-Dev] PEP 495 (Local Time Disambiguation) is ready for pronouncement

by Alexander Belopolsky

On Sat, Aug 15, 2015 at 8:49 PM, Alexander Belopolsky < alexander.belopolsky(a)gmail.com> wrote: > > PEP 495 [1] is a deliberately minimalistic proposal to remove an > ambiguity in representing some local times as datetime.datetime > objects. A major issue has come up since my announcement above. Tim Peters have noticed that PEP 495 would violate the "hash invariant" unless the fold attribute is accounted for in inter-zone comparisons. See [2] for details. This issue has been resolved by modifying the definition [3] of the "==" operator for aware datetimes with post-PEP tzinfo. Note that no program will be affected by this change unless it uses a post-PEP tzinfo implementation. I made some smaller changes [4] to the PEP as well and it should finally be ready for pronouncement. [1]: https://www.python.org/dev/peps/pep-0495 [2]: https://mail.python.org/pipermail/datetime-sig/2015-September/000625.html [3]: https://www.python.org/dev/peps/pep-0495/#aware-datetime-equality-comparison [4]: https://hg.python.org/peps/log/39b7c1da05a2/pep-0495.txt

4 years, 4 months

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Python-Dev September 2015