Python-Dev January 2014

python-dev@python.org

117 participants
91 discussions

More compact dictionaries with faster iteration

by Raymond Hettinger

The current memory layout for dictionaries is unnecessarily inefficient. It has a sparse table of 24-byte entries containing the hash value, key pointer, and value pointer. Instead, the 24-byte entries should be stored in a dense table referenced by a sparse table of indices. For example, the dictionary: d = {'timmy': 'red', 'barry': 'green', 'guido': 'blue'} is currently stored as: entries = [['--', '--', '--'], [-8522787127447073495, 'barry', 'green'], ['--', '--', '--'], ['--', '--', '--'], ['--', '--', '--'], [-9092791511155847987, 'timmy', 'red'], ['--', '--', '--'], [-6480567542315338377, 'guido', 'blue']] Instead, the data should be organized as follows: indices = [None, 1, None, None, None, 0, None, 2] entries = [[-9092791511155847987, 'timmy', 'red'], [-8522787127447073495, 'barry', 'green'], [-6480567542315338377, 'guido', 'blue']] Only the data layout needs to change. The hash table algorithms would stay the same. All of the current optimizations would be kept, including key-sharing dicts and custom lookup functions for string-only dicts. There is no change to the hash functions, the table search order, or collision statistics. The memory savings are significant (from 30% to 95% compression depending on the how full the table is). Small dicts (size 0, 1, or 2) get the most benefit. For a sparse table of size t with n entries, the sizes are: curr_size = 24 * t new_size = 24 * n + sizeof(index) * t In the above timmy/barry/guido example, the current size is 192 bytes (eight 24-byte entries) and the new size is 80 bytes (three 24-byte entries plus eight 1-byte indices). That gives 58% compression. Note, the sizeof(index) can be as small as a single byte for small dicts, two bytes for bigger dicts and up to sizeof(Py_ssize_t) for huge dict. In addition to space savings, the new memory layout makes iteration faster. Currently, keys(), values, and items() loop over the sparse table, skipping-over free slots in the hash table. Now, keys/values/items can loop directly over the dense table, using fewer memory accesses. Another benefit is that resizing is faster and touches fewer pieces of memory. Currently, every hash/key/value entry is moved or copied during a resize. In the new layout, only the indices are updated. For the most part, the hash/key/value entries never move (except for an occasional swap to fill a hole left by a deletion). With the reduced memory footprint, we can also expect better cache utilization. For those wanting to experiment with the design, there is a pure Python proof-of-concept here: http://code.activestate.com/recipes/578375 YMMV: Keep in mind that the above size statics assume a build with 64-bit Py_ssize_t and 64-bit pointers. The space savings percentages are a bit different on other builds. Also, note that in many applications, the size of the data dominates the size of the container (i.e. the weight of a bucket of water is mostly the water, not the bucket). Raymond

6 years, 3 months

Semi-official read-only Github mirror of the CPython Mercurial repository

by Eli Bendersky

Hi all, https://github.com/python/cpython is now live as a semi-official, *read only* Github mirror of the CPython Mercurial repository. Let me know if you have any problems/concerns. I still haven't decided how often to update it (considering either just N times a day, or maybe use a Hg hook for batching). Suggestions are welcome. The methodology I used to create it is via hg-fast-export. I also tried to pack and gc the git repo as much as possible before the initial Github push - it went down from almost ~2GB to ~200MB (so this is the size of a fresh clone right now). Eli P.S. thanks Jesse for the keys to https://github.com/python

6 years, 6 months

Reviving restricted mode?

by Guido van Rossum

I've received some enthusiastic emails from someone who wants to revive restricted mode. He started out with a bunch of patches to the CPython runtime using ctypes, which he attached to an App Engine bug: http://code.google.com/p/googleappengine/issues/detail?id=671 Based on his code (the file secure.py is all you need, included in secure.tar.gz) it seems he believes the only security leaks are __subclasses__, gi_frame and gi_code. (I have since convinced him that if we add "restricted" guards to these attributes, he doesn't need the functions added to sys.) I don't recall the exploits that Samuele once posted that caused the death of rexec.py -- does anyone recall, or have a pointer to the threads? -- --Guido van Rossum (home page: http://www.python.org/~guido/)

6 years, 8 months

Add Py_REPLACE and Py_XREPLACE macros

by Serhiy Storchaka

The Py_CLEAR macros is used as safe alternative for following unsafe idiomatic code: Py_XDECREF(ptr); ptr = NULL; But other unsafe idiomatic code is widely used in the sources: Py_XDECREF(ptr); ptr = new_value; Every occurrence of such code is potential bug for same reasons as for Py_CLEAR. It was offered [1] to introduce new macros Py_REPLACE and Py_XREPLACE for safe replace with Py_DECREF and Py_XDECREF respectively. Automatically generated patch contains about 50 replaces [2]. [1] http://bugs.python.org/issue16447 [2] http://bugs.python.org/issue20440

7 years, 1 month

CLA link from bugs.python.org

by Tim Delaney

It appears there's no obvious link from bugs.python.org to the contributor agreement - you need to go via the unintuitive link Foundation -> Contribution Forms (and from what I've read, you're prompted when you add a patch to the tracker). I'd suggest that if the "Contributor Form Received" field is "No" in user details, there be a link to http://www.python.org/psf/contrib/. Tim Delaney

7 years, 1 month

The desired behaviour for resolve() when the path doesn't exist

by Vajrasky Kok

Dear friends, This is related with ticket 19717: "resolve() fails when the path doesn't exist". Assuming /home/cutecat exists but not /home/cutecat/aa, what is the desired output of Path('/home/cutecat/aa/bb/cc').resolve(strict=False)? Should it be: "/home/cutecat" (the existed path only), "/home/cutecat/aa" (the first non-existed path; my current strategy), or "/home/cutecat/aa/bb/cc" (the default behaviour of os.path.realpath)? Vajrasky

7 years, 1 month

News from asyncio

by Victor Stinner

Hi, I'm working for eNovance on the asyncio module, the goal is to use it in the huge OpenStack project (2.5 millions line of code) which currently uses eventlet. I'm trying to fix remaining issues in the asyncio module before Python 3.4 final. The asyncio project is very active but discussions are splitted between its own dedicated mailing list (python-tulip Google group), Tulip bug tracker and Python bug tracker. Please join Tulip mailing list if you are interested to contribute. http://code.google.com/p/tulip/ I would like to share with you the status of the module. Many bugs have been fixed recently. I suppose that new bugs are found because new developers started to play with asyncio since Python 3.4 beta 1. asyncio issues fixed in Python 3.4 beta 3, in a random order: - I wrote most of the asyncio documentation, please help me to improve it! I tried to add many short examples, each time explaining one feature or concept (ex: callbacks, signals, futures, etc.): http://docs.python.org/dev/library/asyncio.html - Characters devices (TTY/PTY) are now supported, useful to control real terminal (not pipes) for subprocesses. On Mac OS X older than Maverick (10.9), the SelectSelector should be used instead of KqueueSelector (kqueue didnd't support character devices) - Tulip #111: StreamReader.readexactly() now raises an IncompleteReadError if the end of stream is reached before we received enough bytes, instead of returning less bytes than requested. - Python #20311: asyncio had a performance issue related to the resolution of selectors and clocks. For example, selectors.EpollSelector has a resolution of 1 millisecond (10^-3), whereas asyncio uses arbitrary timestamps. The issue was fixed by adding a resolution attribute to selectors and a private granularity attribute to asyncio.BaseEventLoop, and use the granularity in asyncio event loop to round times. - New Task.current_task() class method - Guido wrote a web crawler, see examples/crawl.py in Tulip - More symbols are exported in the main asyncio module (ex: Queue, iscouroutine(), etc.) - Charles-François improved the signal handlers: SA_RESTART flag is now set to limit EINTR errors in syscalls - Some optimizations (ex: don't call logger.log() when it's not needed) - Many bugfixes - (sorry if I forgot other changes, see also Tulip history and history of the asyncio module in Python) I also would like to change asyncio to support a "stream-like" API for subprocesses, see Tulip issue #115 (and Python issue #20400): http://code.google.com/p/tulip/issues/detail?id=115 I ported ayncio on Python 2.6 and 2.7, because today OpenStack only uses these Python versions. I created a new project called "Trollius" (instead of "Tulip") because the syntax is a little bit different. "yield from" becomes "yield", and "return x" becomes "raise Return(x)": https://bitbucket.org/enovance/trollius https://pypi.python.org/pypi/trollius If you are interested by the OpenStack part, see my blueprint (something similar to PEPs but for smaller changes) for Oslo Messaing: https://wiki.openstack.org/wiki/Oslo/blueprints/asyncio There is an ongoing effort to port OpenStack to Python 3, eNovance is also working on the portage: https://wiki.openstack.org/wiki/Python3 Victor

7 years, 2 months

Negative times behaviour in itertools.repeat for Python maintenance releases (2.7, 3.3 and maybe 3.4)

by Vajrasky Kok

Dear comrades, I would like to bring to your attention my disagreement with Larry Hastings in this ticket: http://bugs.python.org/issue19145 (Inconsistent behaviour in itertools.repeat when using negative times). Let me give you the context: >>> from itertools import repeat >>> repeat('a') repeat('a') >>> repeat('a', times=-1) repeat('a') >>> repeat('a', -1) repeat('a', 0) >>> repeat('a', times=-4) repeat('a', -4) >>> repeat('a', -4) repeat('a', 0) Right now, the only way you can tell repeat to do endless repetitions is to omit the `times` argument or by setting `times` argument to -1 via keyword. Larry intends to fix this in Python 3.5 by making None value to `times` argument as a representative of unlimited repetitions and negative `times` argument (either via keyword or positional) ALWAYS means 0 repetitions. This will ensure repeat has the appropriate signature. I have no qualms about it. All is well. My disagreement is related to Larry's decision not to fix this bug in Python 2.7, 3.3, and 3.4. Both of us agree that we should not let Python 2.7, 3.3, and 3.4 happily accepts None value because that is more than bug fix. What we don't agree is whether we should make negative `times` argument via keyword behaviour needs to be changed or not. He prefer let it be. I prefer we change the behaviour so that negative `times` argument in Python 2.7, 3.3, and 3.4 ALWAYS means 0 repetitions. My argument is that, on all circumstances, argument sent to function via positional or keyword must mean the same thing. Let's consider this hypothetical code: # 0 means draw, positive int means win, negative int means lose result = goals_result_of_the_match() # For every goal of the winning match, we donate money to charity. # Every donation consists of 10 $. import itertools itertools.repeat(donate_money_to_charity(), result) Later programmer B refactor this code: # 0 means draw, positive int means win, negative int means lose result = goals_result_of_the_match() # For every goal of the winning match, we donate money to charity. # Every donation consists of 10 $ from itertools import repeat repeat(object=donate_money_to_charity(), times=result) They use Python 2.7 (remember Python 2.7 is here to stay for a long long time). And imagine the match is lost 0-1 or 1-2 or 2-3 (so the goal difference is negative one / -1). It means they donate money to charity endlessly!!! They can go bankrupt. So I hope my argument is convincing enough. We need to fix this bug in Python 2.7, 3.3, and 3.4, by making `times` argument sent via positional or keyword in itertools.repeat ALWAYS means the same thing, which is 0 repetitions. If this is not possible, at the very least, we need to warn this behaviour in the doc. Whatever decision that comes up from this discussion, I will make peace with it. Vajrasky

7 years, 2 months

Add PyType_GetSlot

by "Martin v. Löwis"

I'd like to resolve a long-standing issue of the stable ABI in 3.4: http://bugs.python.org/issue17162 The issue is that, since PyTypeObject is opaque, module authors cannot get at tp_free, which they may need to in order to implement tp_dealloc properly. Rather than providing the proposed specific wrapper for tp_dealloc, I propose to add a generic PyType_GetSlot function. From a stability point of view, exposing slot values is uncritical - it's just that the layout of the type object is hidden. Any objection to adding this before RC1? Regards, Martin

7 years, 2 months

Summary of Python tracker Issues

by Python tracker

ACTIVITY SUMMARY (2014-01-24 - 2014-01-31) 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 4484 ( +9) closed 27748 (+70) total 32232 (+79) Open issues with patches: 2036 Issues opened (58) ================== #3158: Doctest fails to find doctests in extension modules http://bugs.python.org/issue3158 reopened by zach.ware #20383: Add a keyword-only spec argument to types.ModuleType http://bugs.python.org/issue20383 opened by brett.cannon #20384: os.open() exception doesn't contain file name on Windows http://bugs.python.org/issue20384 opened by serhiy.storchaka #20386: socket.SocketType enum overwrites import of _socket.SocketType http://bugs.python.org/issue20386 opened by giampaolo.rodola #20387: tokenize/untokenize roundtrip fails with tabs http://bugs.python.org/issue20387 opened by jason.coombs #20389: clarify meaning of xbar and mu in pvariance/variance of statis http://bugs.python.org/issue20389 opened by jtaylor #20391: windows python launcher should support explicit 64-bit version http://bugs.python.org/issue20391 opened by theller #20392: Inconsistency with uppercase file extensions in MimeTypes.gues http://bugs.python.org/issue20392 opened by rodrigo.parra #20393: Docs: mark deprecated items in the TOC http://bugs.python.org/issue20393 opened by zearin #20394: Coverity complains on audioop http://bugs.python.org/issue20394 opened by serhiy.storchaka #20396: Argument Clinic: Touch source file if any output file changed http://bugs.python.org/issue20396 opened by larry #20397: distutils --record option does not validate existance of byte- http://bugs.python.org/issue20397 opened by marcusva #20399: Comparison of memoryview http://bugs.python.org/issue20399 opened by fin.swimmer #20400: Add create_read_pipe_protocol/create_write_pipe_protocol to as http://bugs.python.org/issue20400 opened by haypo #20402: List comprehensions should be noted in for loop documentation http://bugs.python.org/issue20402 opened by robla #20403: Idle options dialog: add help http://bugs.python.org/issue20403 opened by terry.reedy #20404: Delayed exception using non-text encodings with TextIOWrapper http://bugs.python.org/issue20404 opened by ncoghlan #20405: Add io.BinaryTransformWrapper and a "transform" parameter to o http://bugs.python.org/issue20405 opened by ncoghlan #20406: Use application icon for IDLE http://bugs.python.org/issue20406 opened by serhiy.storchaka #20408: memoryview() constructor documentation error http://bugs.python.org/issue20408 opened by larry #20410: Argument Clinic: add 'self' return converter http://bugs.python.org/issue20410 opened by zach.ware #20412: Enum and IntEnum classes are not defined in the documentation http://bugs.python.org/issue20412 opened by ethan.furman #20413: Errors in documentation of standard codec error handlers http://bugs.python.org/issue20413 opened by RalfM #20414: Python 3.4 has two Overlapped types http://bugs.python.org/issue20414 opened by haypo #20415: Could method "isinstance" take a list as parameter? http://bugs.python.org/issue20415 opened by Chen.ZHANG #20416: Marshal: special case int and float, don't use references http://bugs.python.org/issue20416 opened by haypo #20417: ensurepip should not be installed with --without-ensurepip http://bugs.python.org/issue20417 opened by Arfrever #20420: BufferedIncrementalEncoder violates IncrementalEncoder interfa http://bugs.python.org/issue20420 opened by serhiy.storchaka #20421: expose SSL socket protocol version http://bugs.python.org/issue20421 opened by pitrou #20423: io.StringIO newline param has wrong default http://bugs.python.org/issue20423 opened by couplewavylines #20426: Compiling a regex with re.DEBUG should force a recompile http://bugs.python.org/issue20426 opened by leewz #20428: _Py_open does not work with O_CREAT http://bugs.python.org/issue20428 opened by alexandre.vassalotti #20429: 3.3.4rc1 install deleted Windows taskbar icons http://bugs.python.org/issue20429 opened by terry.reedy #20430: Make argparse.SUPPRESS work as an argument "dest" http://bugs.python.org/issue20430 opened by jzwinck #20431: Should posix functions that accept fd also accept objects with http://bugs.python.org/issue20431 opened by larry #20432: Argument Clinic: when cloning functions with path_t, path_t re http://bugs.python.org/issue20432 opened by larry #20433: add aliasedname() and namedaliases() methods to unicodedata mo http://bugs.python.org/issue20433 opened by jamadagni #20434: Process crashes if not enough memory to import module http://bugs.python.org/issue20434 opened by qualab #20435: Discrepancy between io.StringIO and _pyio.StringIO with univer http://bugs.python.org/issue20435 opened by serhiy.storchaka #20437: Use Py_CLEAR to safe clear attributes http://bugs.python.org/issue20437 opened by serhiy.storchaka #20438: inspect: Deprecate getfullargspec? http://bugs.python.org/issue20438 opened by yselivanov #20439: inspect.Signature: Add Signature.format method to match format http://bugs.python.org/issue20439 opened by yselivanov #20440: Use Py_REPLACE/Py_XREPLACE macros http://bugs.python.org/issue20440 opened by serhiy.storchaka #20443: __code__. co_filename should always be an absolute path http://bugs.python.org/issue20443 opened by yselivanov #20444: Reduce logging.config.Converting duplication of code http://bugs.python.org/issue20444 opened by dongwm #20445: HAVE_BROKEN_NICE detected incorrectly due to configure.ac typo http://bugs.python.org/issue20445 opened by George.Kouryachy #20446: ipaddress: hash similarities for ipv4 and ipv6 http://bugs.python.org/issue20446 opened by flambda #20447: doctest.debug_script: insecure use of /tmp http://bugs.python.org/issue20447 opened by jwilk #20450: hg touch fails on System Z Linux buildbot http://bugs.python.org/issue20450 opened by serhiy.storchaka #20451: os.exec* mangles argv on windows (splits on spaces, etc) http://bugs.python.org/issue20451 opened by The Compiler #20452: test_timeout_rounding() of test_asyncio fails on "x86 Ubuntu S http://bugs.python.org/issue20452 opened by haypo #20453: json.load() error message changed in 3.4 http://bugs.python.org/issue20453 opened by barry #20454: platform.linux_distribution() returns empty value on Archlinux http://bugs.python.org/issue20454 opened by fmoreau #20455: test_asyncio hangs on Windows http://bugs.python.org/issue20455 opened by haypo #20456: Argument Clinic rollup patch, 2014/01/31 http://bugs.python.org/issue20456 opened by larry #20457: Use partition and enumerate make getopt easier http://bugs.python.org/issue20457 opened by dongwm #20459: No Argument Clinic documentation on how to specify a return co http://bugs.python.org/issue20459 opened by brett.cannon #20460: Wrong markup in c-api/arg.rst http://bugs.python.org/issue20460 opened by OSAMU.NAKAMURA Most recent 15 issues with no replies (15) ========================================== #20460: Wrong markup in c-api/arg.rst http://bugs.python.org/issue20460 #20459: No Argument Clinic documentation on how to specify a return co http://bugs.python.org/issue20459 #20457: Use partition and enumerate make getopt easier http://bugs.python.org/issue20457 #20456: Argument Clinic rollup patch, 2014/01/31 http://bugs.python.org/issue20456 #20454: platform.linux_distribution() returns empty value on Archlinux http://bugs.python.org/issue20454 #20451: os.exec* mangles argv on windows (splits on spaces, etc) http://bugs.python.org/issue20451 #20450: hg touch fails on System Z Linux buildbot http://bugs.python.org/issue20450 #20447: doctest.debug_script: insecure use of /tmp http://bugs.python.org/issue20447 #20446: ipaddress: hash similarities for ipv4 and ipv6 http://bugs.python.org/issue20446 #20443: __code__. co_filename should always be an absolute path http://bugs.python.org/issue20443 #20435: Discrepancy between io.StringIO and _pyio.StringIO with univer http://bugs.python.org/issue20435 #20432: Argument Clinic: when cloning functions with path_t, path_t re http://bugs.python.org/issue20432 #20430: Make argparse.SUPPRESS work as an argument "dest" http://bugs.python.org/issue20430 #20429: 3.3.4rc1 install deleted Windows taskbar icons http://bugs.python.org/issue20429 #20421: expose SSL socket protocol version http://bugs.python.org/issue20421 Most recent 15 issues waiting for review (15) ============================================= #20460: Wrong markup in c-api/arg.rst http://bugs.python.org/issue20460 #20457: Use partition and enumerate make getopt easier http://bugs.python.org/issue20457 #20456: Argument Clinic rollup patch, 2014/01/31 http://bugs.python.org/issue20456 #20452: test_timeout_rounding() of test_asyncio fails on "x86 Ubuntu S http://bugs.python.org/issue20452 #20444: Reduce logging.config.Converting duplication of code http://bugs.python.org/issue20444 #20440: Use Py_REPLACE/Py_XREPLACE macros http://bugs.python.org/issue20440 #20437: Use Py_CLEAR to safe clear attributes http://bugs.python.org/issue20437 #20434: Process crashes if not enough memory to import module http://bugs.python.org/issue20434 #20417: ensurepip should not be installed with --without-ensurepip http://bugs.python.org/issue20417 #20416: Marshal: special case int and float, don't use references http://bugs.python.org/issue20416 #20414: Python 3.4 has two Overlapped types http://bugs.python.org/issue20414 #20406: Use application icon for IDLE http://bugs.python.org/issue20406 #20404: Delayed exception using non-text encodings with TextIOWrapper http://bugs.python.org/issue20404 #20394: Coverity complains on audioop http://bugs.python.org/issue20394 #20392: Inconsistency with uppercase file extensions in MimeTypes.gues http://bugs.python.org/issue20392 Top 10 most discussed issues (10) ================================= #20386: socket.SocketType enum overwrites import of _socket.SocketType http://bugs.python.org/issue20386 19 msgs #20311: epoll.poll(timeout) and PollSelector.select(timeout) must roun http://bugs.python.org/issue20311 18 msgs #20452: test_timeout_rounding() of test_asyncio fails on "x86 Ubuntu S http://bugs.python.org/issue20452 17 msgs #19081: zipimport behaves badly when the zip file changes while the pr http://bugs.python.org/issue19081 12 msgs #20414: Python 3.4 has two Overlapped types http://bugs.python.org/issue20414 12 msgs #19145: Inconsistent behaviour in itertools.repeat when using negative http://bugs.python.org/issue19145 11 msgs #20406: Use application icon for IDLE http://bugs.python.org/issue20406 10 msgs #20416: Marshal: special case int and float, don't use references http://bugs.python.org/issue20416 9 msgs #15216: Support setting the encoding on a text stream after creation http://bugs.python.org/issue15216 8 msgs #17162: Py_LIMITED_API needs a PyType_GenericDealloc http://bugs.python.org/issue17162 8 msgs Issues closed (70) ================== #8260: When I use codecs.open(...) and f.readline() follow up by f.re http://bugs.python.org/issue8260 closed by serhiy.storchaka #8639: Allow callable objects in inspect.getfullargspec http://bugs.python.org/issue8639 closed by yselivanov #12704: Language Reference: Clarify behaviour of yield when generator http://bugs.python.org/issue12704 closed by python-dev #15189: tkinter.messagebox does not use the application's icon http://bugs.python.org/issue15189 closed by terry.reedy #15869: IDLE: Include .desktop file and icon http://bugs.python.org/issue15869 closed by terry.reedy #15931: inspect.findsource fails after directory change http://bugs.python.org/issue15931 closed by yselivanov #16490: "inspect.getargspec()" and "inspect.getcallargs()" don't work http://bugs.python.org/issue16490 closed by yselivanov #17432: PyUnicode_ functions not accessible in Limited API on Windows http://bugs.python.org/issue17432 closed by loewis #17481: inspect.getfullargspec should use __signature__ http://bugs.python.org/issue17481 closed by yselivanov #17721: Help button on preference window doesn't work http://bugs.python.org/issue17721 closed by terry.reedy #17727: document that some distributions change site.py defaults http://bugs.python.org/issue17727 closed by georg.brandl #19077: More robust TemporaryDirectory cleanup http://bugs.python.org/issue19077 closed by serhiy.storchaka #19140: inspect.Signature.bind() inaccuracies http://bugs.python.org/issue19140 closed by yselivanov #19363: Python 2.7's future_builtins.map is not compatible with Python http://bugs.python.org/issue19363 closed by eric.smith #19456: ntpath doesn't join paths correctly when a drive is present http://bugs.python.org/issue19456 closed by serhiy.storchaka #19618: test_sysconfig_module fails on Ubuntu 12.04 http://bugs.python.org/issue19618 closed by berker.peksag #19658: inspect.getsource weird case http://bugs.python.org/issue19658 closed by yselivanov #19944: Make importlib.find_spec load packages as needed http://bugs.python.org/issue19944 closed by eric.snow #19966: Wrong mtimes of Include/Python-ast.h and Python/Python-ast.c i http://bugs.python.org/issue19966 closed by python-dev #19990: Add unittests for imghdr module http://bugs.python.org/issue19990 closed by serhiy.storchaka #20011: Changing the signature for Parameter's constructor http://bugs.python.org/issue20011 closed by yselivanov #20075: help(open) eats first line http://bugs.python.org/issue20075 closed by zach.ware #20105: Codec exception chaining is losing traceback details http://bugs.python.org/issue20105 closed by python-dev #20133: Derby: Convert the audioop module to use Argument Clinic http://bugs.python.org/issue20133 closed by serhiy.storchaka #20151: Derby: Convert the binascii module to use Argument Clinic http://bugs.python.org/issue20151 closed by serhiy.storchaka #20166: window x64 c-extensions not works on python3.4.0b2 http://bugs.python.org/issue20166 closed by skrah #20193: Derby: Convert the zlib, _bz2 and _lzma modules to use Argumen http://bugs.python.org/issue20193 closed by serhiy.storchaka #20209: Deprecate PROTOCOL_SSLv2 http://bugs.python.org/issue20209 closed by pitrou #20223: inspect.signature does not support new functools.partialmethod http://bugs.python.org/issue20223 closed by yselivanov #20231: Argument Clinic accepts no-default args after default args http://bugs.python.org/issue20231 closed by larry #20308: inspect.Signature doesn't support user classes without __init_ http://bugs.python.org/issue20308 closed by yselivanov #20317: ExitStack hang if enough nested exceptions http://bugs.python.org/issue20317 closed by ncoghlan #20320: select.select(timeout) and select.kqueue.control(timeout) must http://bugs.python.org/issue20320 closed by haypo #20322: Upgrade ensurepip's pip and setuptools http://bugs.python.org/issue20322 closed by dstufft #20325: Argument Clinic: self converters are not preserved when clonin http://bugs.python.org/issue20325 closed by larry #20326: Argument Clinic should use a non-error-prone syntax to mark te http://bugs.python.org/issue20326 closed by larry #20330: PEP 342 is outdated http://bugs.python.org/issue20330 closed by ncoghlan #20331: Fix various fd leaks http://bugs.python.org/issue20331 closed by serhiy.storchaka #20338: Idle: increase max calltip width http://bugs.python.org/issue20338 closed by terry.reedy #20348: Argument Clinic HOWTO listed multiple times in HOWTO index http://bugs.python.org/issue20348 closed by ezio.melotti #20349: Argument Clinic: error on __new__ or __init__ with no argument http://bugs.python.org/issue20349 closed by taleinat #20356: fix formatting of positional-only parameters in inspect.Signat http://bugs.python.org/issue20356 closed by yselivanov #20358: test_curses is failing on Ubuntu 13.10 http://bugs.python.org/issue20358 closed by larry #20367: concurrent.futures.as_completed() fails when given duplicate F http://bugs.python.org/issue20367 closed by gvanrossum #20372: inspect.getfile should raise a TypeError if C object does not http://bugs.python.org/issue20372 closed by yselivanov #20373: Use test.script_helper.assert_python_ok() instead of subproces http://bugs.python.org/issue20373 closed by pitrou #20376: Argument Clinic: backslashes in docstrings are not escaped http://bugs.python.org/issue20376 closed by zach.ware #20381: Argument Clinic: expression default arguments broken http://bugs.python.org/issue20381 closed by zach.ware #20382: Typo in cStringIO tp_name http://bugs.python.org/issue20382 closed by haypo #20385: Argument Clinic: Support for __new__ not checking _PyArg_NoKey http://bugs.python.org/issue20385 closed by taleinat #20388: Argument Clinic doesn't handle module level functions with mod http://bugs.python.org/issue20388 closed by zach.ware #20390: Argument Clinic rollup patch, 2014/01/25 http://bugs.python.org/issue20390 closed by larry #20395: Extract generated clinic code in Modules/_pickle.c to separate http://bugs.python.org/issue20395 closed by serhiy.storchaka #20398: stem crashes python http://bugs.python.org/issue20398 closed by pitrou #20401: inspect.signature removes initial starred method params (bug) http://bugs.python.org/issue20401 closed by yselivanov #20407: heapq.nsmallest and heapq.nlargest don't accept a "key" parame http://bugs.python.org/issue20407 closed by rhettinger #20409: .readline() returned garble text http://bugs.python.org/issue20409 closed by r.david.murray #20411: IndexError in sys.__interactivehook__ with pyreadline installe http://bugs.python.org/issue20411 closed by jason.coombs #20418: socket.getaddrinfo fails for hostname that is all digits 0-9 http://bugs.python.org/issue20418 closed by neologix #20419: it's not possible to set ECDH curve name via ssl.wrap_socket http://bugs.python.org/issue20419 closed by pitrou #20422: Signature.from_builtin should raise a ValueError when no signa http://bugs.python.org/issue20422 closed by yselivanov #20424: _pyio.StringIO doesn't work with lone surrogates http://bugs.python.org/issue20424 closed by serhiy.storchaka #20425: inspect.Signature should work on decorated builtins http://bugs.python.org/issue20425 closed by yselivanov #20427: inspect.Signature should ensure that non-default params don't http://bugs.python.org/issue20427 closed by yselivanov #20436: test.regrtest is no more importable in 2.7 http://bugs.python.org/issue20436 closed by serhiy.storchaka #20441: Test_tcl.TclTest.test_split(list) failures on Windows, 2.7. http://bugs.python.org/issue20441 closed by serhiy.storchaka #20442: inspect: Document Signature & Parameter constructors' signatur http://bugs.python.org/issue20442 closed by yselivanov #20448: Adds missing backslash to devguide setup page http://bugs.python.org/issue20448 closed by sahutd #20449: _overlapped: read_buffer and write_buffer are misused http://bugs.python.org/issue20449 closed by haypo #20458: ``clinic.py --converters`` raises an exception http://bugs.python.org/issue20458 closed by zach.ware

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Python-Dev January 2014