Mailman 3 February 2016 - Python-Dev

Regular expression bytecode
by Jonathan Goble Feb. 19, 2016

Feb. 19, 2016

I'm new to Python's mailing lists, so please forgive me if I'm sending this to the wrong list. :) I filed http://bugs.python.org/issue26336 a few days ago, but now I think this list might be a better place to get discussion going. Basically, I'd like to see the bytecode of a compiled regex object exposed as a public (probably read-only) attribute of the object. Currently, although compiled in pure Python through modules sre_compile and sre_parse, the list of opcodes is then passed into C and copied into an array in a C struct, without being publicly exposed in any way. The only way for a user to get an internal representation of the regex is the re.DEBUG flag, which only produces an intermediate representation rather than the actual bytecode and only goes to stdout, which makes it useless for someone who wants to examine it programmatically. I'm sure others can think of other potential use cases for this, but one in particular would be that someone could write a debugger that can allow a user to step through a regex one opcode at a time to see exactly where it is failing. It would also perhaps be nice to have a public constructor for the regex object type, which would enable users to modify the bytecode and directly create a new regex object from it, similar to what is currently possible through the types.FunctionType and types.CodeType constructors. In addition to exposing the code in a public attribute, a helper module written in Python similar to the dis module (which is for Python's own bytecode) would be very helpful, allowing the code to be easily disassembled and examined at a higher level. Is this a good idea, or am I barking up the wrong tree? I think it's a great idea, but I'm open to being told this is a horrible idea. :) I welcome any and all comments both here and on the bug tracker. Jonathan Goble

3 4

Summary of Python tracker Issues
by Python tracker Feb. 19, 2016

Feb. 19, 2016

ACTIVITY SUMMARY (2016-02-12 - 2016-02-19) 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 5432 (+15) closed 32718 (+27) total 38150 (+42) Open issues with patches: 2375 Issues opened (35) ================== #25939: _ssl.enum_certificates() fails with ERROR_ACCESS_DENIED if pyt http://bugs.python.org/issue25939 reopened by benjamin.peterson #26351: Occasionally check for Ctrl-C in long-running operations like http://bugs.python.org/issue26351 opened by steven.daprano #26352: getpass incorrectly displays password prompt on stderr on fall http://bugs.python.org/issue26352 opened by Matt Hooks #26353: IDLE: Saving Shell should not add \n http://bugs.python.org/issue26353 opened by terry.reedy #26355: Emit major version based canonical URLs for docs http://bugs.python.org/issue26355 opened by ncoghlan #26357: asyncio.wait loses coroutine return value http://bugs.python.org/issue26357 opened by André Caron #26358: mmap.mmap.__iter__ is broken (yields bytes instead of ints) http://bugs.python.org/issue26358 opened by ztane #26359: CPython build options for out-of-the box performance http://bugs.python.org/issue26359 opened by alecsandru.patrascu #26360: Deadlock in thread.join on Python 2.7/Mac OS X 10.9 http://bugs.python.org/issue26360 opened by mark.dickinson #26362: Approved API for creating a temporary file path http://bugs.python.org/issue26362 opened by bignose #26363: __builtins__ propagation is misleading described in exec and e http://bugs.python.org/issue26363 opened by xcombelle #26366: Use “.. versionadded” over “.. versionchanged” where a http://bugs.python.org/issue26366 opened by Tony R. #26367: importlib.__import__ does not fail for invalid relative import http://bugs.python.org/issue26367 opened by mjacob #26369: doc for unicode.decode and str.encode is unnecessarily confusi http://bugs.python.org/issue26369 opened by benspiller #26370: shelve filename inconsistent between platforms http://bugs.python.org/issue26370 opened by Dima.Tisnek #26372: Popen.communicate not ignoring BrokenPipeError http://bugs.python.org/issue26372 opened by memeplex #26373: asyncio: add support for async context manager on streams? http://bugs.python.org/issue26373 opened by haypo #26374: concurrent_futures Executor.map semantics better specified in http://bugs.python.org/issue26374 opened by F.D. Sacerdoti #26375: New versions of Python hangs on imaplib.IMAP4_SSL() http://bugs.python.org/issue26375 opened by mniklas #26376: Tkinter root window won't close if packed. http://bugs.python.org/issue26376 opened by Sam Yeager #26377: Tkinter dialogs will not close if root window not packed. http://bugs.python.org/issue26377 opened by Sam Yeager #26379: zlib decompress as_bytearray flag http://bugs.python.org/issue26379 opened by llllllllll #26380: Add an http method enum http://bugs.python.org/issue26380 opened by demian.brecht #26381: Add 'geo' URI scheme (RFC 5870) to urllib.parse.uses_params http://bugs.python.org/issue26381 opened by Serhiy Int #26382: List object memory allocator http://bugs.python.org/issue26382 opened by catalin.manciu #26383: benchmarks (perf.py): number of decimal places in csv output http://bugs.python.org/issue26383 opened by florin.papa #26384: UnboundLocalError in socket._sendfile_use_sendfile http://bugs.python.org/issue26384 opened by berker.peksag #26385: the call of tempfile.NamedTemporaryFile fails and leaves a fil http://bugs.python.org/issue26385 opened by Eugene Viktorov #26386: tkinter - Treeview - .selection_add and selection_toggle http://bugs.python.org/issue26386 opened by gbarnabic #26387: Race condition in sqlite module http://bugs.python.org/issue26387 opened by scorp #26388: Disabling changing sys.argv[0] with runpy.run_module(...alter_ http://bugs.python.org/issue26388 opened by Mike Kaplinskiy #26389: Expand traceback module API to accept just an exception as an http://bugs.python.org/issue26389 opened by brett.cannon #26390: hashlib's pbkdf2_hmac documentation "rounds" does not match so http://bugs.python.org/issue26390 opened by dbakker #26391: Specialized sub-classes of Generic never call __init__ http://bugs.python.org/issue26391 opened by Kai Wohlfahrt #26392: socketserver.BaseServer.close_server should stop serve_forever http://bugs.python.org/issue26392 opened by palaviv Most recent 15 issues with no replies (15) ========================================== #26392: socketserver.BaseServer.close_server should stop serve_forever http://bugs.python.org/issue26392 #26391: Specialized sub-classes of Generic never call __init__ http://bugs.python.org/issue26391 #26389: Expand traceback module API to accept just an exception as an http://bugs.python.org/issue26389 #26386: tkinter - Treeview - .selection_add and selection_toggle http://bugs.python.org/issue26386 #26384: UnboundLocalError in socket._sendfile_use_sendfile http://bugs.python.org/issue26384 #26383: benchmarks (perf.py): number of decimal places in csv output http://bugs.python.org/issue26383 #26377: Tkinter dialogs will not close if root window not packed. http://bugs.python.org/issue26377 #26375: New versions of Python hangs on imaplib.IMAP4_SSL() http://bugs.python.org/issue26375 #26373: asyncio: add support for async context manager on streams? http://bugs.python.org/issue26373 #26363: __builtins__ propagation is misleading described in exec and e http://bugs.python.org/issue26363 #26359: CPython build options for out-of-the box performance http://bugs.python.org/issue26359 #26358: mmap.mmap.__iter__ is broken (yields bytes instead of ints) http://bugs.python.org/issue26358 #26353: IDLE: Saving Shell should not add \n http://bugs.python.org/issue26353 #26338: remove duplicate bind addresses in create_server http://bugs.python.org/issue26338 #26335: Make mmap.write return the number of bytes written like other http://bugs.python.org/issue26335 Most recent 15 issues waiting for review (15) ============================================= #26392: socketserver.BaseServer.close_server should stop serve_forever http://bugs.python.org/issue26392 #26390: hashlib's pbkdf2_hmac documentation "rounds" does not match so http://bugs.python.org/issue26390 #26387: Race condition in sqlite module http://bugs.python.org/issue26387 #26385: the call of tempfile.NamedTemporaryFile fails and leaves a fil http://bugs.python.org/issue26385 #26384: UnboundLocalError in socket._sendfile_use_sendfile http://bugs.python.org/issue26384 #26382: List object memory allocator http://bugs.python.org/issue26382 #26380: Add an http method enum http://bugs.python.org/issue26380 #26379: zlib decompress as_bytearray flag http://bugs.python.org/issue26379 #26372: Popen.communicate not ignoring BrokenPipeError http://bugs.python.org/issue26372 #26367: importlib.__import__ does not fail for invalid relative import http://bugs.python.org/issue26367 #26366: Use “.. versionadded” over “.. versionchanged” where a http://bugs.python.org/issue26366 #26359: CPython build options for out-of-the box performance http://bugs.python.org/issue26359 #26352: getpass incorrectly displays password prompt on stderr on fall http://bugs.python.org/issue26352 #26347: BoundArguments.apply_defaults doesn't handle empty arguments http://bugs.python.org/issue26347 #26342: Faster bit ops for single-digit positive longs http://bugs.python.org/issue26342 Top 10 most discussed issues (10) ================================= #15873: datetime: add ability to parse RFC 3339 dates and times http://bugs.python.org/issue15873 29 msgs #26360: Deadlock in thread.join on Python 2.7/Mac OS X 10.9 http://bugs.python.org/issue26360 17 msgs #26323: Add assert_called() and assert_called_once() methods for mock http://bugs.python.org/issue26323 10 msgs #26366: Use “.. versionadded” over “.. versionchanged” where a http://bugs.python.org/issue26366 10 msgs #26331: Tokenizer: allow underscores for grouping in numeric literals http://bugs.python.org/issue26331 9 msgs #21145: Add the @cached_property decorator http://bugs.python.org/issue21145 8 msgs #26372: Popen.communicate not ignoring BrokenPipeError http://bugs.python.org/issue26372 8 msgs #26385: the call of tempfile.NamedTemporaryFile fails and leaves a fil http://bugs.python.org/issue26385 7 msgs #26380: Add an http method enum http://bugs.python.org/issue26380 6 msgs #14597: Cannot unload dll in ctypes until script exits http://bugs.python.org/issue14597 5 msgs Issues closed (28) ================== #15608: Improve socketserver doc http://bugs.python.org/issue15608 closed by martin.panter #16915: mode of socket.makefile is more limited than documentation sug http://bugs.python.org/issue16915 closed by berker.peksag #19841: ConfigParser PEP issues http://bugs.python.org/issue19841 closed by berker.peksag #20169: random module doc page has broken links http://bugs.python.org/issue20169 closed by python-dev #23992: multiprocessing: MapResult shouldn't fail fast upon exception http://bugs.python.org/issue23992 closed by neologix #25179: PEP 498 f-strings need to be documented http://bugs.python.org/issue25179 closed by martin.panter #25713: Setuptools included with 64-bit Windows installer is outdated http://bugs.python.org/issue25713 closed by ned.deily #25833: pyvenv: venvs cannot be moved because activate scripts hard-co http://bugs.python.org/issue25833 closed by vinay.sajip #25887: awaiting on coroutine more than once should be an error http://bugs.python.org/issue25887 closed by yselivanov #25924: investigate if getaddrinfo(3) on OSX is thread-safe http://bugs.python.org/issue25924 closed by ned.deily #26265: build errors on OS X 10.11 with --enable-universalsdk http://bugs.python.org/issue26265 closed by ned.deily #26309: socketserver.BaseServer._handle_request_noblock() doesn't shut http://bugs.python.org/issue26309 closed by martin.panter #26316: Probable typo in Arg Clinic's linear_format() http://bugs.python.org/issue26316 closed by martin.panter #26318: `io.open(fd, ...).name` returns numeric fd instead of None http://bugs.python.org/issue26318 closed by terry.reedy #26319: Check recData size before unpack in zipfile http://bugs.python.org/issue26319 closed by terry.reedy #26327: IDLE: File > Save in 2.7 Shell with non-ascii fails http://bugs.python.org/issue26327 closed by terry.reedy #26333: Multiprocessing imap hangs when generator input errors http://bugs.python.org/issue26333 closed by terry.reedy #26334: bytes.translate() doesn't take keyword arguments; docs suggest http://bugs.python.org/issue26334 closed by Nicholas Chammas #26348: activate.fish sets VENV prompt incorrectly http://bugs.python.org/issue26348 closed by vinay.sajip #26349: Ship python35.lib with the embedded distribution, please http://bugs.python.org/issue26349 closed by steve.dower #26354: re.I does not work as expected http://bugs.python.org/issue26354 closed by ezio.melotti #26356: Registration http://bugs.python.org/issue26356 closed by SilentGhost #26361: lambda in dict comprehension is broken http://bugs.python.org/issue26361 closed by steven.daprano #26364: pip uses colour in messages that does not work on white termin http://bugs.python.org/issue26364 closed by berker.peksag #26365: ntpath.py Error in Windows http://bugs.python.org/issue26365 closed by serhiy.storchaka #26368: grammatical error in asyncio stream documentation http://bugs.python.org/issue26368 closed by ned.deily #26371: asynchat.async_chat and asyncore.dispatcher_with_send are not http://bugs.python.org/issue26371 closed by gvanrossum #26378: Typo in regex documentation http://bugs.python.org/issue26378 closed by python-dev

1 0

RE 25939 - _ssl.enum_certificates broken on Windows
by Dave Hirschfeld Feb. 19, 2016

Feb. 19, 2016

I've run into issue 25939 (https://bugs.python.org/issue25939) when trying to deploy a python webapp with IIS on Windows. This issue is preventing us from deploying the app to production as the workaround AFAICT requires running the app under an admin account. Apologies if this is an inappropriate forum for a +1 but I just wanted to let the devs know that this is an issue which affects the use of Python (on Windows) in the enterprise. I noticed that the patch hasn't been merged yet so was interested in making sure it didn't fall by the wayside... As a mere user I don't expect the devs to prioritize my own problems which no doubt only affect a very small number of python users but I would be very grateful if the patch did make it into a minor release. Regards, Dave

4 4

When does `PyType_Type.tp_alloc get assigned to PyType_GenericAlloc ?
by Randy Eels Feb. 17, 2016

Feb. 17, 2016

Hi everyone, I've a question about the implementation of the `type` builtin (in Python 3.5). In Objects/typeobject.c, the `tp_alloc` slot of PyType_Type gets set to 0. However, I can see (using gdb) that it later gets assigned to `&PyType_GenericAlloc`. I'd argue that this makes sense because, in `type_new`, there is a line where that member function gets called without previously checking whether that member points to something: ``` /* Allocate the type object */ type = (PyTypeObject *)metatype->tp_alloc(metatype, nslots); ``` Yet, I can't seem to understand where and when does the `tp_alloc` slot of PyType_Type get re-assigned to PyType_GenericAlloc. Does that even happen? Or am I missing something bigger? And, just out of further curiosity, why doesn't the aforementioned slot get initialised to `PyType_GenericAlloc` in the first place? Thanks a lot.

3 3

Buffer overflow bug in GNU C's getaddrinfo()
by MRAB Feb. 17, 2016

Feb. 17, 2016

Is this something that we need to worry about? Extremely severe bug leaves dizzying number of software and devices vulnerable http://arstechnica.com/security/2016/02/extremely-severe-bug-leaves-dizzyin…

4 3

Hash randomization for which types?
by Christoph Groth Feb. 17, 2016

Feb. 17, 2016

Hello, Recent Python versions randomize the hashes of str, bytes and datetime objects. I suppose that the choice of these three types is the result of a compromise. Has this been discussed somewhere publicly? I'm not a web programmer, but don't web applications also use dictionaries that are indexed by, say, tuples of integers? Just curious... Thanks, Christoph

8 11

CPython build options for out-of-the box performance
by Patrascu, Alecsandru Feb. 14, 2016

Feb. 14, 2016

Hi all, This is Alecsandru from the Dynamic Scripting Languages Optimization Team at Intel Corporation. I want to open a discussion regarding the way CPython is built, mainly the options that are available to the programmers. Analyzing the CPython ecosystem we can see that there are a lot of users that just download the sources and hit the commands "./configure", "make" and "make install" once and then continue using it with their Python scripts. One of the problems with this workflow it that the users do not benefit from the entire optimization features that are existing in the build system, such as PGO and LTO. Therefore, I propose a workflow, like the following. Assume some work has to be done into the CPython interpreter, a developer can do the following steps: A. Implementation and debugging phase. 1. The command "./configure PYDIST=debug" is ran once. It will enable the Py_DEBUG, -O0 and -g flags 2. The command "make" is ran once or multiple times B. Testing the implementation from step A, in a pre-release environment 1. The command "./configure PYDIST=devel" is ran once. It will disable the Py_DEBUG flags and will enable the -O3 and -g flags, and it is just like the current implementation in CPython 2. The command "make" is ran once or multiple times C. For any other CPython usage, for example distributing the interpreter, installing it inside an operating system, or just the majority of users who are not CPython developers and only want to compile it once and use it as-is: 1. The command "./configure" is ran once. Alternatively, the command "./configure PYDIST=release" can be used. It will disable all debugging functionality, enable the -O3 flag and will enable PGO and LTO. 2. The command "make" is ran once If you think this benefits CPython, I can create an issue and post the patches that enable all of the above. Thank you, Alecsandru

1 1

PEP 515: Underscores in Numeric Literals
by Georg Brandl Feb. 12, 2016

Feb. 12, 2016

This came up in python-ideas, and has met mostly positive comments, although the exact syntax rules are up for discussion. cheers, Georg -------------------------------------------------------------------------------- PEP: 515 Title: Underscores in Numeric Literals Version: $Revision$ Last-Modified: $Date$ Author: Georg Brandl Status: Draft Type: Standards Track Content-Type: text/x-rst Created: 10-Feb-2016 Python-Version: 3.6 Abstract and Rationale ====================== This PEP proposes to extend Python's syntax so that underscores can be used in integral and floating-point number literals. This is a common feature of other modern languages, and can aid readability of long literals, or literals whose value should clearly separate into parts, such as bytes or words in hexadecimal notation. Examples:: # grouping decimal numbers by thousands amount = 10_000_000.0 # grouping hexadecimal addresses by words addr = 0xDEAD_BEEF # grouping bits into bytes in a binary literal flags = 0b_0011_1111_0100_1110 Specification ============= The current proposal is to allow underscores anywhere in numeric literals, with these exceptions: * Leading underscores cannot be allowed, since they already introduce identifiers. * Trailing underscores are not allowed, because they look confusing and don't contribute much to readability. * The number base prefixes ``0x``, ``0o``, and ``0b`` cannot be split up, because they are fixed strings and not logically part of the number. * No underscore allowed after a sign in an exponent (``1e-_5``), because underscores can also not be used after the signs in front of the number (``-1e5``). * No underscore allowed after a decimal point, because this leads to ambiguity with attribute access (the lexer cannot know that there is no number literal in ``foo._5``). There appears to be no reason to restrict the use of underscores otherwise. The production list for integer literals would therefore look like this:: integer: decimalinteger | octinteger | hexinteger | bininteger decimalinteger: nonzerodigit [decimalrest] | "0" [("0" | "_")* "0"] nonzerodigit: "1"..."9" decimalrest: (digit | "_")* digit digit: "0"..."9" octinteger: "0" ("o" | "O") (octdigit | "_")* octdigit hexinteger: "0" ("x" | "X") (hexdigit | "_")* hexdigit bininteger: "0" ("b" | "B") (bindigit | "_")* bindigit octdigit: "0"..."7" hexdigit: digit | "a"..."f" | "A"..."F" bindigit: "0" | "1" For floating-point literals:: floatnumber: pointfloat | exponentfloat pointfloat: [intpart] fraction | intpart "." exponentfloat: (intpart | pointfloat) exponent intpart: digit (digit | "_")* fraction: "." intpart exponent: ("e" | "E") "_"* ["+" | "-"] digit [decimalrest] Alternative Syntax ================== Underscore Placement Rules -------------------------- Instead of the liberal rule specified above, the use of underscores could be limited. Common rules are (see the "other languages" section): * Only one consecutive underscore allowed, and only between digits. * Multiple consecutive underscore allowed, but only between digits. Different Separators -------------------- A proposed alternate syntax was to use whitespace for grouping. Although strings are a precedent for combining adjoining literals, the behavior can lead to unexpected effects which are not possible with underscores. Also, no other language is known to use this rule, except for languages that generally disregard any whitespace. C++14 introduces apostrophes for grouping, which is not considered due to the conflict with Python's string literals. [1]_ Behavior in Other Languages =========================== Those languages that do allow underscore grouping implement a large variety of rules for allowed placement of underscores. This is a listing placing the known rules into three major groups. In cases where the language spec contradicts the actual behavior, the actual behavior is listed. **Group 1: liberal (like this PEP)** * D [2]_ * Perl 5 (although docs say it's more restricted) [3]_ * Rust [4]_ * Swift (although textual description says "between digits") [5]_ **Group 2: only between digits, multiple consecutive underscores** * C# (open proposal for 7.0) [6]_ * Java [7]_ **Group 3: only between digits, only one underscore** * Ada [8]_ * Julia (but not in the exponent part of floats) [9]_ * Ruby (docs say "anywhere", in reality only between digits) [10]_ Implementation ============== A preliminary patch that implements the specification given above has been posted to the issue tracker. [11]_ References ========== .. [1] http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3499.html .. [2] http://dlang.org/spec/lex.html#integerliteral .. [3] http://perldoc.perl.org/perldata.html#Scalar-value-constructors .. [4] http://doc.rust-lang.org/reference.html#number-literals .. [5] https://developer.apple.com/library/ios/documentation/Swift/Conceptual/Swif… .. [6] https://github.com/dotnet/roslyn/issues/216 .. [7] https://docs.oracle.com/javase/7/docs/technotes/guides/language/underscores… .. [8] http://archive.adaic.com/standards/83lrm/html/lrm-02-04.html#2.4 .. [9] http://docs.julialang.org/en/release-0.4/manual/integers-and-floating-point… .. [10] http://ruby-doc.org/core-2.3.0/doc/syntax/literals_rdoc.html#label-Numbers .. [11] http://bugs.python.org/issue26331 Copyright ========= This document has been placed in the public domain.

22 59

Summary of Python tracker Issues
by Python tracker Feb. 12, 2016

Feb. 12, 2016

ACTIVITY SUMMARY (2016-02-05 - 2016-02-12) 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 5417 ( +4) closed 32691 (+50) total 38108 (+54) Open issues with patches: 2368 Issues opened (39) ================== #22107: tempfile module misinterprets access denied error on Windows http://bugs.python.org/issue22107 reopened by serhiy.storchaka #25911: Regression: os.walk now using os.scandir() breaks bytes filena http://bugs.python.org/issue25911 reopened by serhiy.storchaka #26299: wsgiref.util FileWrapper raises ValueError: I/O operation on c http://bugs.python.org/issue26299 opened by samwyse #26300: "unpacked" bytecode http://bugs.python.org/issue26300 opened by abarnert #26302: cookies module allows commas in keys http://bugs.python.org/issue26302 opened by jason.coombs #26303: Shared execution context between doctests in a module http://bugs.python.org/issue26303 opened by kernc #26305: Make Argument Clinic to generate PEP 7 conforming code http://bugs.python.org/issue26305 opened by serhiy.storchaka #26306: Can't create abstract tuple http://bugs.python.org/issue26306 opened by Jack Hargreaves #26307: no PGO for built-in modules with `make profile-opt` http://bugs.python.org/issue26307 opened by tzot #26308: Solaris 10 build issues http://bugs.python.org/issue26308 opened by gms #26309: socketserver.BaseServer._handle_request_noblock() don't shutdw http://bugs.python.org/issue26309 opened by palaviv #26313: ssl.py _load_windows_store_certs fails if windows cert store i http://bugs.python.org/issue26313 opened by Jonathan Kamens #26314: interned strings are stored in a dict, a set would use less me http://bugs.python.org/issue26314 opened by gregory.p.smith #26316: Probable typo in Arg Clinic’s linear_format() http://bugs.python.org/issue26316 opened by martin.panter #26317: Build Problem with GCC + Macintosh OS X 10.11 El Capitain http://bugs.python.org/issue26317 opened by Robert P Fischer #26318: `io.open(fd, ...).name` returns numeric fd instead of None http://bugs.python.org/issue26318 opened by mmarkk #26319: Check recData size before unpack in zipfile http://bugs.python.org/issue26319 opened by j w #26322: Missing docs for typing.Set http://bugs.python.org/issue26322 opened by gvanrossum #26323: Add a assert_called() method for mock objects http://bugs.python.org/issue26323 opened by Amit.Saha #26326: Named entity "vertical line" missed in 2.7 htmlentitydefs.py http://bugs.python.org/issue26326 opened by andreas.roehler #26327: File > Save in IDLE shell window not working http://bugs.python.org/issue26327 opened by xflr6 #26328: shutil._copyxattr() function shouldn't fail if setting securit http://bugs.python.org/issue26328 opened by bigon #26329: os.path.normpath("//") returns // http://bugs.python.org/issue26329 opened by Fred Rolland #26330: shutil.disk_usage() on Windows can't properly handle unicode http://bugs.python.org/issue26330 opened by giampaolo.rodola #26331: Tokenizer: allow underscores for grouping in numeric literals http://bugs.python.org/issue26331 opened by georg.brandl #26332: OSError: exception: access violation writing <...> (Windows 10 http://bugs.python.org/issue26332 opened by jk #26333: Multiprocessing imap hangs when generator input errors http://bugs.python.org/issue26333 opened by Aaron Halfaker #26334: bytes.translate() doesn't take keyword arguments; docs suggest http://bugs.python.org/issue26334 opened by Nicholas Chammas #26335: Make mmap.write return the number of bytes written like other http://bugs.python.org/issue26335 opened by jstasiak #26336: Expose regex bytecode as attribute of compiled pattern object http://bugs.python.org/issue26336 opened by Jonathan Goble #26337: Bypass imghdr module determines the type of image http://bugs.python.org/issue26337 opened by Ramin Farajpour Cami #26338: remove duplicate bind addresses in create_server http://bugs.python.org/issue26338 opened by sebastien.bourdeauducq #26340: modal dialog with transient method; parent window fails to ico http://bugs.python.org/issue26340 opened by vs #26342: Faster bit ops for single-digit positive longs http://bugs.python.org/issue26342 opened by yselivanov #26346: PySequenceMethods documentation missing sq_slice and sq_ass_sl http://bugs.python.org/issue26346 opened by atuining #26347: BoundArguments.apply_defaults doesn't handle empty arguments http://bugs.python.org/issue26347 opened by Frederick Wagner #26348: activate.fish sets VENV prompt incorrectly http://bugs.python.org/issue26348 opened by Dan McCombs #26349: Ship python35.lib with the embedded distribution, please http://bugs.python.org/issue26349 opened by Thomas Führinger #26350: Windoes: signal doc should state certains signals can't be reg http://bugs.python.org/issue26350 opened by giampaolo.rodola Most recent 15 issues with no replies (15) ========================================== #26349: Ship python35.lib with the embedded distribution, please http://bugs.python.org/issue26349 #26348: activate.fish sets VENV prompt incorrectly http://bugs.python.org/issue26348 #26340: modal dialog with transient method; parent window fails to ico http://bugs.python.org/issue26340 #26338: remove duplicate bind addresses in create_server http://bugs.python.org/issue26338 #26336: Expose regex bytecode as attribute of compiled pattern object http://bugs.python.org/issue26336 #26335: Make mmap.write return the number of bytes written like other http://bugs.python.org/issue26335 #26333: Multiprocessing imap hangs when generator input errors http://bugs.python.org/issue26333 #26332: OSError: exception: access violation writing <...> (Windows 10 http://bugs.python.org/issue26332 #26327: File > Save in IDLE shell window not working http://bugs.python.org/issue26327 #26322: Missing docs for typing.Set http://bugs.python.org/issue26322 #26319: Check recData size before unpack in zipfile http://bugs.python.org/issue26319 #26313: ssl.py _load_windows_store_certs fails if windows cert store i http://bugs.python.org/issue26313 #26308: Solaris 10 build issues http://bugs.python.org/issue26308 #26306: Can't create abstract tuple http://bugs.python.org/issue26306 #26299: wsgiref.util FileWrapper raises ValueError: I/O operation on c http://bugs.python.org/issue26299 Most recent 15 issues waiting for review (15) ============================================= #26348: activate.fish sets VENV prompt incorrectly http://bugs.python.org/issue26348 #26347: BoundArguments.apply_defaults doesn't handle empty arguments http://bugs.python.org/issue26347 #26342: Faster bit ops for single-digit positive longs http://bugs.python.org/issue26342 #26338: remove duplicate bind addresses in create_server http://bugs.python.org/issue26338 #26335: Make mmap.write return the number of bytes written like other http://bugs.python.org/issue26335 #26331: Tokenizer: allow underscores for grouping in numeric literals http://bugs.python.org/issue26331 #26323: Add a assert_called() method for mock objects http://bugs.python.org/issue26323 #26314: interned strings are stored in a dict, a set would use less me http://bugs.python.org/issue26314 #26309: socketserver.BaseServer._handle_request_noblock() don't shutdw http://bugs.python.org/issue26309 #26308: Solaris 10 build issues http://bugs.python.org/issue26308 #26305: Make Argument Clinic to generate PEP 7 conforming code http://bugs.python.org/issue26305 #26302: cookies module allows commas in keys http://bugs.python.org/issue26302 #26285: Garbage collection of unused input sections from CPython binar http://bugs.python.org/issue26285 #26282: Add support for partial keyword arguments in extension functio http://bugs.python.org/issue26282 #26280: ceval: Optimize list[int] (subscript) operation similarly to C http://bugs.python.org/issue26280 Top 10 most discussed issues (10) ================================= #21955: ceval.c: implement fast path for integers with a single digit http://bugs.python.org/issue21955 28 msgs #26302: cookies module allows commas in keys http://bugs.python.org/issue26302 14 msgs #26200: SETREF adds unnecessary work in some cases http://bugs.python.org/issue26200 11 msgs #26331: Tokenizer: allow underscores for grouping in numeric literals http://bugs.python.org/issue26331 11 msgs #24165: Free list for single-digits ints http://bugs.python.org/issue24165 10 msgs #26182: Deprecation warnings for the future async and await keywords i http://bugs.python.org/issue26182 6 msgs #24916: In sysconfig, don't rely on sys.version format http://bugs.python.org/issue24916 5 msgs #26330: shutil.disk_usage() on Windows can't properly handle unicode http://bugs.python.org/issue26330 5 msgs #25195: mock.ANY doesn't match mock.MagicMock() object http://bugs.python.org/issue25195 4 msgs #25911: Regression: os.walk now using os.scandir() breaks bytes filena http://bugs.python.org/issue25911 4 msgs Issues closed (47) ================== #15731: Mechanism for inheriting docstrings and signatures http://bugs.python.org/issue15731 closed by ncoghlan #16023: IDLE freezes on ^5 or ^6 (Un-)Tabify Region with OS X Cocoa Tk http://bugs.python.org/issue16023 closed by ned.deily #19543: Add -3 warnings for codec convenience method changes http://bugs.python.org/issue19543 closed by ncoghlan #22983: Cookie parsing should be more permissive http://bugs.python.org/issue22983 closed by martin.panter #25226: "suffix" attribute not documented in logging.TimedRotatingFile http://bugs.python.org/issue25226 closed by vinay.sajip #25295: functools.lru_cache raises KeyError http://bugs.python.org/issue25295 closed by Peter Brady #25639: open 'PhysicalDriveN' on windows fails (since python 3.5) with http://bugs.python.org/issue25639 closed by eryksun #25698: The copy_reg module becomes unexpectedly empty in test_cpickle http://bugs.python.org/issue25698 closed by serhiy.storchaka #25709: Problem with string concatenation and utf-8 cache. http://bugs.python.org/issue25709 closed by georg.brandl #25848: Tkinter tests failed on Windows buildbots http://bugs.python.org/issue25848 closed by zach.ware #25949: Lazy creation of __dict__ in OrderedDict http://bugs.python.org/issue25949 closed by serhiy.storchaka #25983: Add tests for multi-argument type() http://bugs.python.org/issue25983 closed by serhiy.storchaka #25985: Use sys.version_info instead of sys.version http://bugs.python.org/issue25985 closed by serhiy.storchaka #25992: test_gdb fails on OSX http://bugs.python.org/issue25992 closed by ned.deily #25994: File descriptor leaks in os.scandir() http://bugs.python.org/issue25994 closed by serhiy.storchaka #25995: os.walk() consumes a lot of file descriptors http://bugs.python.org/issue25995 closed by serhiy.storchaka #26045: Improve error message for http.client when posting unicode str http://bugs.python.org/issue26045 closed by martin.panter #26086: Bug in os module http://bugs.python.org/issue26086 closed by steven.daprano #26117: Close directory descriptor in scandir iterator on error http://bugs.python.org/issue26117 closed by serhiy.storchaka #26136: DeprecationWarning for PEP 479 (generator_stop) http://bugs.python.org/issue26136 closed by martin.panter #26198: PyArg_ParseTuple with format "et#" and "es#" detects overflow http://bugs.python.org/issue26198 closed by serhiy.storchaka #26204: compiler: ignore constants used as statements (don't emit LOAD http://bugs.python.org/issue26204 closed by haypo #26223: decimal.to_eng_string() does not implement engineering notatio http://bugs.python.org/issue26223 closed by rhettinger #26243: zlib.compress level as keyword argument http://bugs.python.org/issue26243 closed by martin.panter #26248: Improve scandir DirEntry docs, especially re symlinks and cach http://bugs.python.org/issue26248 closed by gvanrossum #26279: time.strptime does not properly convert out-of-bounds values http://bugs.python.org/issue26279 closed by ned.deily #26287: Core dump in f-string with formatting errors http://bugs.python.org/issue26287 closed by eric.smith #26288: Optimize PyLong_AsDouble for single-digit longs http://bugs.python.org/issue26288 closed by yselivanov #26289: Optimize floor division for ints http://bugs.python.org/issue26289 closed by yselivanov #26294: Queue().unfinished_tasks not in docs - deliberate? http://bugs.python.org/issue26294 closed by rhettinger #26297: Move constant folding to AST level http://bugs.python.org/issue26297 closed by serhiy.storchaka #26298: Split ceval.c into small files http://bugs.python.org/issue26298 closed by haypo #26301: ceval.c: reintroduce fast-path for list[index] in BINARY_SUBSC http://bugs.python.org/issue26301 closed by haypo #26304: Fix “allows to <verb>” in documentation http://bugs.python.org/issue26304 closed by martin.panter #26310: Fix typo “variariables” in socketserver.py http://bugs.python.org/issue26310 closed by martin.panter #26311: Typo in documentation for xml.parsers.expat http://bugs.python.org/issue26311 closed by martin.panter #26312: Raise SystemError on programmical errors in PyArg_Parse*() http://bugs.python.org/issue26312 closed by serhiy.storchaka #26315: Optimize mod division for ints http://bugs.python.org/issue26315 closed by yselivanov #26320: Web documentation for 2.7 has unreadable highlights in Table o http://bugs.python.org/issue26320 closed by python-dev #26321: datetime.strptime fails to parse AM/PM correctly http://bugs.python.org/issue26321 closed by zach.ware #26324: sum() incorrect on negative zeros http://bugs.python.org/issue26324 closed by Jim.Jewett #26325: Add helper to check that no ResourceWarning is emitted http://bugs.python.org/issue26325 closed by serhiy.storchaka #26339: Python rk0.3b1 KeyError: 'config_argparse_rel_path' http://bugs.python.org/issue26339 closed by berker.peksag #26341: Implement free-list for single-digit longs http://bugs.python.org/issue26341 closed by yselivanov #26343: os.O_CLOEXEC not available on OS X http://bugs.python.org/issue26343 closed by ned.deily #26344: `sys.meta_path` Skipped for Packages with Non-Standard Suffixe http://bugs.python.org/issue26344 closed by brett.cannon #26345: Extra newline appended to UTF-8 strings on Windows http://bugs.python.org/issue26345 closed by eryksun

1 0

[ANN] MicroPython 1.6
by Paul Sokolovsky Feb. 12, 2016

Feb. 12, 2016

Hello, MicroPython is a lean and efficient Python implementation for microcontrollers, embedded, and mobile systems (which also runs just as fine on desktops, servers, and clouds). https://github.com/micropython/micropython https://github.com/micropython/micropython/releases/tag/v1.6 There're following major changes since 1.5: 1. LwIP module support for embedded TCP/IP networking. 2. IPv6 support in the Unix port. 3. Beta support for persistent bytecode (similar to CPython's .pyc) 4. 64-bit NaN boxing (improved floating-point performance if enabled). 5. Support for new official PyBoards PYBv1.1 and PYBLITEv1.0. 6. Long int constant folding during bytecode compilation (glad that CPython will catch up in that area thanks to FAT Python project). 7. There's a ongoing crowdfunding campaign to fund complete and well-maintained MicroPython port to ubiquitous ESP8266 WiFi SoC, and improve networking and IoT support in MicroPython in general: https://www.kickstarter.com/projects/214379695/micropython-on-the-esp8266-b… -- Best regards, Paul mailto:pmiscml@gmail.com

1 0