Python-Dev December 2015

python-dev@python.org

84 participants
45 discussions

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

1 year, 5 months

PEP 506 secrets module

by Steven D'Aprano

Hi, As extensively discussed on Python-Ideas, the secrets module and PEP 506 is (I hope) ready for pronouncement. https://www.python.org/dev/peps/pep-0506/ There is code and tests here: https://bitbucket.org/sdaprano/secrets or you can run hg clone https://sdaprano@bitbucket.org/sdaprano/secrets The code is written for and tested on Python 2.6, 2.7, 3.1 - 3.4. -- Steve

4 years, 10 months

PEP 257 and __init__

by Facundo Batista

Hola! (I was doubting in sending this mail to this list or to the normal one, but as it affects a "style recommendation" we propose for the whole community, I finally sent it here) I was reading PEP 257 and it says that all public methods from a class (including __init__) should have a docstring. Why __init__? It's behaviour is well defined (inits the instance), and the initialization parameters should be described in the class' docstring itself, right? Or I am missing something? Should we remove "__init__" (the class method, *not* the package file) as to require docstrings in the PEP? Thanks! -- . Facundo Blog: http://www.taniquetil.com.ar/plog/ PyAr: http://www.python.org/ar/ Twitter: @facundobatista

5 years, 2 months

subprocess check_output

by Carlos Barera

Hi, Trying to run a specific command (ibstat) installed in /usr/sbin on an Ubuntu 15.04 machine, using subprocess.check_output and getting "/bin/sh: /usr/sbin/ibstat: No such file or directory" I tried the following: - running the command providing full path - running with executable=bash - running with (['/bin/bash', '-c' , "/usr/sbin/ibstat"]) Nothing worked ... Any idea? -carlos

5 years, 2 months

Re: [Python-Dev] Is there a reference manual for Python bytecode?

by Wes Turner

numba * http://numba.pydata.org/numba-doc/0.16.0/modules/numba.html#module-numba.by… * https://github.com/numba/numba/blob/master/numba/bytecode.py pypy * http://doc.pypy.org/en/latest/interpreter.html * http://aosabook.org/en/pypy.html ... http://compilers.pydata.org/ #Bytecode Utilities On Dec 28, 2015 1:33 PM, "Sturla Molden" <sturla.molden(a)gmail.com> wrote: Brett Cannon <brett(a)python.org> wrote: > Ned also neglected to mention his byterun project which is a pure Python > implementation of the CPython eval loop: <a > href="https://github.com/nedbat/byterun">https://github.com/nedbat/byterun </a> I would also encourage you to take a look at Numba. It is an LLVM based JIT compiler for Python bytecode, written for hardcore numerical algorithms in Python. It can often achieve the same performance as -O2 in C after a short burn-in while inferring the types of the arguments and variables. Using it is mostly as easy as adding an @numba.jit decorator to the function we want to accelerate. Numba is rapidly becoming what Google's long dead swallow should have been. :-) Sturla _______________________________________________ Python-Dev mailing list Python-Dev(a)python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/wes.turner%40gmail.com

5 years, 2 months

Is there a reference manual for Python bytecode?

by Erik

Hi. Looking at ceval.c and peephole.c, there is - of course - lots of specific hard-coded knowledge of the bytecode (e.g., number of operands and other attributes). I'd like to experiment at this level, but I can't seem to find a reference for the bytecode. Is there the equivalent of something like the ARM ARM(*) for Python bytecode? I can read Python or C code if it's encoded that way, but I'm looking for something that's a bit more immediate than deciphering what an interpreter or optimizer is trying to do (i.e., some sort of table layout or per-opcode set of attributes). BR, E. (*) http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0406c/index.…

5 years, 2 months

Thanks for your hard work and my New Years resolutions

by Brett Cannon

I just wanted to quickly thank everyone for the work they put into this project. I realize most of us either get only a little bit of paid time to work on Python or none at all, so contributing easily ends up using personal time which I know is a precious thing. So thank you for caring enough about this project to put in your valuable time and effort while trying to keep it enjoyable for everyone else. As we go into 2016, I hope to do my part to indirectly thank everyone by making our developer workflow easier to work with so that not only the lives of the core developers become easier but we once again become a project that is viewed as welcoming to outside contribution (instead of our current reputation as having patches sit in the issue tracker, languishing; join core-workflow if you want to help out with that). I also hope to see zipimport rewritten -- either by someone else or me if necessary -- so that my importlib.resources idea can land in time for Python 3.6 (join the import-sig if that interests you). Otherwise I plan to keep promoting Python 3 as we get ever closer to 2020. :)

5 years, 2 months

Summary of Python tracker Issues

by Python tracker

ACTIVITY SUMMARY (2015-12-18 - 2015-12-25) 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 5345 (+21) closed 32365 (+24) total 37710 (+45) Open issues with patches: 2351 Issues opened (38) ================== #24840: implement bool conversion for enums to prevent odd edge case http://bugs.python.org/issue24840 reopened by gregory.p.smith #25908: ProcessPoolExecutor deadlock on KeyboardInterrupt http://bugs.python.org/issue25908 opened by jacksontj #25909: Incorrect documentation for PyMapping_Items and like http://bugs.python.org/issue25909 opened by serhiy.storchaka #25910: Fixing links in documentation http://bugs.python.org/issue25910 opened by SilentGhost #25911: Regression: os.walk now using os.scandir() breaks bytes filena http://bugs.python.org/issue25911 opened by mont29 #25912: Use __spec__.__name__ instead of __name__ in the docs where ap http://bugs.python.org/issue25912 opened by Antony.Lee #25913: base64.a85decode adobe flag incorrectly utilizes <~ as a marke http://bugs.python.org/issue25913 opened by Soren Solari #25916: wave module readframes now returns bytes not str http://bugs.python.org/issue25916 opened by Iber Parodi Siri #25917: Fixing howto links in docs http://bugs.python.org/issue25917 opened by SilentGhost #25918: AssertionError in lib2to3 on 2.7.11 Windows http://bugs.python.org/issue25918 opened by schlamar #25919: htp.client PUT method ignores error responses sent immediatly http://bugs.python.org/issue25919 opened by Wiktor Niesiobedzki #25920: PyOS_AfterFork should reset socketmodule's lock http://bugs.python.org/issue25920 opened by emptysquare #25922: canceling a repair install breaks the ability to uninstall, re http://bugs.python.org/issue25922 opened by Kyle S (MrStonedOne) #25923: More const char http://bugs.python.org/issue25923 opened by serhiy.storchaka #25924: investigate if getaddrinfo(3) on OSX is thread-safe http://bugs.python.org/issue25924 opened by ronaldoussoren #25925: Coverage support for CPython 2 http://bugs.python.org/issue25925 opened by alecsandru.patrascu #25926: problems with "times" keyword in itertools.repeat http://bugs.python.org/issue25926 opened by Thomas Feldmann #25927: add dir_fd for mkstemp, and also maybe to all tempfile.* http://bugs.python.org/issue25927 opened by mmarkk #25928: Add Decimal.as_integer_ratio() http://bugs.python.org/issue25928 opened by johnwalker #25930: Document that os.remove is semantically identical to os.unlink http://bugs.python.org/issue25930 opened by Anthony Sottile #25931: os.fork() command distributed in windows Python27 (in SocketSe http://bugs.python.org/issue25931 opened by Sam Lobel #25933: Unhandled exception (TypeError) with ftplib in function retrbi http://bugs.python.org/issue25933 opened by Sam Adams #25934: ICC compiler: ICC treats denormal floating point numbers as 0. http://bugs.python.org/issue25934 opened by skrah #25935: OrderedDict prevents garbage collection if a circulary referen http://bugs.python.org/issue25935 opened by charettes #25936: Improve FastChildWatcher with WNOWAIT? http://bugs.python.org/issue25936 opened by WGH #25937: DIfference between utf8 and utf-8 when i define python source http://bugs.python.org/issue25937 opened by 王杰 #25939: _ssl.enum_certificates() fails with ERROR_ACCESS_DENIED if pyt http://bugs.python.org/issue25939 opened by Chi Hsuan Yen #25940: SSL tests failed due to expired svn.python.org SSL certificate http://bugs.python.org/issue25940 opened by Chi Hsuan Yen #25941: Add 'How to Review a Patch' section to devguide http://bugs.python.org/issue25941 opened by Winterflower #25942: subprocess.call SIGKILLs too liberally http://bugs.python.org/issue25942 opened by Mike Pomraning #25943: Integer overflow in _bsddb leads to heap corruption http://bugs.python.org/issue25943 opened by Ned Williamson #25945: Type confusion in partial_setstate and partial_call leads to m http://bugs.python.org/issue25945 opened by Ned Williamson #25946: configure should pick /usr/bin/g++ automatically if present http://bugs.python.org/issue25946 opened by krichter #25947: Installation problem http://bugs.python.org/issue25947 opened by camilleri.jon(a)gmail.com #25948: Invalid MIME encoding generated by email.mime (line too long) http://bugs.python.org/issue25948 opened by vog #25949: Lazy creation of __dict__ in OrderedDict http://bugs.python.org/issue25949 opened by serhiy.storchaka #25951: SSLSocket.sendall() does not return None on success like socke http://bugs.python.org/issue25951 opened by ProgVal #25952: code_context not available in exec() http://bugs.python.org/issue25952 opened by Grzegorz Krasoń Most recent 15 issues with no replies (15) ========================================== #25952: code_context not available in exec() http://bugs.python.org/issue25952 #25951: SSLSocket.sendall() does not return None on success like socke http://bugs.python.org/issue25951 #25949: Lazy creation of __dict__ in OrderedDict http://bugs.python.org/issue25949 #25948: Invalid MIME encoding generated by email.mime (line too long) http://bugs.python.org/issue25948 #25946: configure should pick /usr/bin/g++ automatically if present http://bugs.python.org/issue25946 #25943: Integer overflow in _bsddb leads to heap corruption http://bugs.python.org/issue25943 #25942: subprocess.call SIGKILLs too liberally http://bugs.python.org/issue25942 #25937: DIfference between utf8 and utf-8 when i define python source http://bugs.python.org/issue25937 #25936: Improve FastChildWatcher with WNOWAIT? http://bugs.python.org/issue25936 #25935: OrderedDict prevents garbage collection if a circulary referen http://bugs.python.org/issue25935 #25934: ICC compiler: ICC treats denormal floating point numbers as 0. http://bugs.python.org/issue25934 #25924: investigate if getaddrinfo(3) on OSX is thread-safe http://bugs.python.org/issue25924 #25923: More const char http://bugs.python.org/issue25923 #25917: Fixing howto links in docs http://bugs.python.org/issue25917 #25910: Fixing links in documentation http://bugs.python.org/issue25910 Most recent 15 issues waiting for review (15) ============================================= #25949: Lazy creation of __dict__ in OrderedDict http://bugs.python.org/issue25949 #25945: Type confusion in partial_setstate and partial_call leads to m http://bugs.python.org/issue25945 #25942: subprocess.call SIGKILLs too liberally http://bugs.python.org/issue25942 #25941: Add 'How to Review a Patch' section to devguide http://bugs.python.org/issue25941 #25939: _ssl.enum_certificates() fails with ERROR_ACCESS_DENIED if pyt http://bugs.python.org/issue25939 #25933: Unhandled exception (TypeError) with ftplib in function retrbi http://bugs.python.org/issue25933 #25925: Coverage support for CPython 2 http://bugs.python.org/issue25925 #25923: More const char http://bugs.python.org/issue25923 #25919: htp.client PUT method ignores error responses sent immediatly http://bugs.python.org/issue25919 #25917: Fixing howto links in docs http://bugs.python.org/issue25917 #25916: wave module readframes now returns bytes not str http://bugs.python.org/issue25916 #25913: base64.a85decode adobe flag incorrectly utilizes <~ as a marke http://bugs.python.org/issue25913 #25911: Regression: os.walk now using os.scandir() breaks bytes filena http://bugs.python.org/issue25911 #25910: Fixing links in documentation http://bugs.python.org/issue25910 #25909: Incorrect documentation for PyMapping_Items and like http://bugs.python.org/issue25909 Top 10 most discussed issues (10) ================================= #4709: Mingw-w64 and python on windows x64 http://bugs.python.org/issue4709 13 msgs #25911: Regression: os.walk now using os.scandir() breaks bytes filena http://bugs.python.org/issue25911 12 msgs #25928: Add Decimal.as_integer_ratio() http://bugs.python.org/issue25928 10 msgs #19475: Add timespec optional flag to datetime isoformat() to choose t http://bugs.python.org/issue19475 7 msgs #21579: Python 3.4: tempfile.close attribute does not work http://bugs.python.org/issue21579 7 msgs #25848: Tkinter tests failed on Windows buildbots http://bugs.python.org/issue25848 7 msgs #25919: htp.client PUT method ignores error responses sent immediatly http://bugs.python.org/issue25919 6 msgs #25930: Document that os.remove is semantically identical to os.unlink http://bugs.python.org/issue25930 6 msgs #12484: The Py_InitModule functions no longer exist, but remain in the http://bugs.python.org/issue12484 5 msgs #25933: Unhandled exception (TypeError) with ftplib in function retrbi http://bugs.python.org/issue25933 5 msgs Issues closed (23) ================== #17868: pprint long non-printable bytes as hexdump http://bugs.python.org/issue17868 closed by serhiy.storchaka #20782: base64 module docs do not use the terms 'bytes' and 'string' c http://bugs.python.org/issue20782 closed by r.david.murray #22227: Simplify tarfile iterator http://bugs.python.org/issue22227 closed by serhiy.storchaka #24103: Use after free in xmlparser_setevents (1) http://bugs.python.org/issue24103 closed by serhiy.storchaka #24580: Wrong or missing exception when compiling regexes with recursi http://bugs.python.org/issue24580 closed by serhiy.storchaka #25421: Make __sizeof__ for builtin types more subclass friendly http://bugs.python.org/issue25421 closed by serhiy.storchaka #25766: __bytes__ doesn't work for str subclasses http://bugs.python.org/issue25766 closed by serhiy.storchaka #25827: Support ICC in configure http://bugs.python.org/issue25827 closed by zach.ware #25844: Pylauncher, launcher.c: Assigning NULL to a pointer instead of http://bugs.python.org/issue25844 closed by serhiy.storchaka #25860: os.fwalk() silently skips remaining directories when error occ http://bugs.python.org/issue25860 closed by serhiy.storchaka #25869: Faster ElementTree deepcopying http://bugs.python.org/issue25869 closed by serhiy.storchaka #25873: Faster ElementTree iterating http://bugs.python.org/issue25873 closed by serhiy.storchaka #25902: Fixed various refcount issues in ElementTree iteration http://bugs.python.org/issue25902 closed by serhiy.storchaka #25905: IDLE fails to display the README file http://bugs.python.org/issue25905 closed by terry.reedy #25914: Fix OrderedDict.__sizeof__ http://bugs.python.org/issue25914 closed by serhiy.storchaka #25915: file.write() after file.read() adds text to the end of the fil http://bugs.python.org/issue25915 closed by Adam Wasik #25921: project files for wininst-14.0*.exe don't exist http://bugs.python.org/issue25921 closed by zach.ware #25929: When doing string.replace, it uses the entire 'find' string an http://bugs.python.org/issue25929 closed by r.david.murray #25932: Windows installer ships an outdated and insecure curl.exe http://bugs.python.org/issue25932 closed by zach.ware #25938: if sentence doesn't work with input() http://bugs.python.org/issue25938 closed by benjamin.peterson #25944: Type confusion in partial_setstate and partial_repr leads to c http://bugs.python.org/issue25944 closed by serhiy.storchaka #25950: svn.python.org SSL certificate expired, causing test failures http://bugs.python.org/issue25950 closed by berker.peksag #1753718: base64 "legacy" functions violate RFC 3548 http://bugs.python.org/issue1753718 closed by r.david.murray

5 years, 2 months

dynamic linking, libssl.1.0.0.dylib, libcrypto.1.0.0.dylib and Mac OS X

by Chris Withers

Hi All, I hit this every time I install packages on Mac OS X that use libssl, it looks like extensions are built linking to .dylib's that are not resolveable when the library is actually used: >>> from OpenSSL import SSL Traceback (most recent call last): File "<stdin>", line 1, in <module> File "python2.7/site-packages/OpenSSL/__init__.py", line 8, in <module> from OpenSSL import rand, crypto, SSL File "python2.7/site-packages/OpenSSL/rand.py", line 11, in <module> from OpenSSL._util import ( File "python2.7/site-packages/OpenSSL/_util.py", line 6, in <module> from cryptography.hazmat.bindings.openssl.binding import Binding File "python2.7/site-packages/cryptography/hazmat/bindings/openssl/binding.py", line 13, in <module> from cryptography.hazmat.bindings._openssl import ffi, lib ImportError: dlopen(python2.7/site-packages/cryptography/hazmat/bindings/_openssl.so, 2): Library not loaded: libssl.1.0.0.dylib Referenced from: python2.7/site-packages/cryptography/hazmat/bindings/_openssl.so Reason: image not found Looking at what this links to, I see: $ otool -L lib/python2.7/site-packages/cryptography/hazmat/bindings/_openssl.so lib/python2.7/site-packages/cryptography/hazmat/bindings/_openssl.so: libssl.1.0.0.dylib (compatibility version 1.0.0, current version 1.0.0) Whereas the functional _ssl that ships with Python distributions on Mac OS X look like this: $ otool -L .../lib/python2.7/lib-dynload/_ssl.so .../lib/python2.7/lib-dynload/_ssl.so: @loader_path/../../libssl.1.0.0.dylib (compatibility version 1.0.0, current version 1.0.0) What's going wrong here and what can be done differently to have 'pip install package_using_libssl' build a usable binary installation? Here's a couple of examples of this problem in the wild: https://github.com/alekstorm/backports.ssl/issues/9 http://stackoverflow.com/questions/32978365/how-do-i-run-psycopg2-on-el-cap… https://github.com/psycopg/psycopg2/issues/385 I'm well out of my depth here, I just want to use these libraries, but I'm happy to try and do the work to make the world a better place for Mac users of these libraries... Chris

5 years, 2 months

dynamic linking, libssl.1.0.0.dylib, libcrypto.1.0.0.dylib and Mac OS X

by Chris Withers

5 years, 2 months

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Python-Dev December 2015