Mailman 3 January 2014 - Python-Dev

Re: [Python-Dev] Argument Clinic: Bug? self converters are not preserved when cloning functions
by Larry Hastings 21 Jan '14

21 Jan '14

Please file an issue on the tracker and add me to the nosy list. Do that next time, too; this didn't need to go to python-dev. On Jan 20, 2014 5:46 PM, Tal Einat <taleinat(a)gmail.com> wrote: > > Hi, > > I'm working on converting Objects/bytearray.c and Objects/bytes.c. > > For bytes, the strip methods need a "self converter" so that they get > a PyBytesObject* instead of PyObject*. However, having set this in > bytes.strip and "cloning" that clinic definition for bytes.lstrip and > bytes.rstrip, it appears that the self converter wasn't set on lstrip > and rstrip. Removing the cloning and copying the argument definitions > resolved the issue. > > Is this a bug? > > - Tal > _______________________________________________ > 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/larry%40hastings.org

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Argument Clinic: Bug? self converters are not preserved when cloning functions
by Tal Einat 21 Jan '14

21 Jan '14

Hi, I'm working on converting Objects/bytearray.c and Objects/bytes.c. For bytes, the strip methods need a "self converter" so that they get a PyBytesObject* instead of PyObject*. However, having set this in bytes.strip and "cloning" that clinic definition for bytes.lstrip and bytes.rstrip, it appears that the self converter wasn't set on lstrip and rstrip. Removing the cloning and copying the argument definitions resolved the issue. Is this a bug? - Tal

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PEP 461 Final?
by Ethan Furman 20 Jan '14

20 Jan '14

Here's the text for your reading pleasure. I'll commit the PEP after I add some markup. Major change: - dropped `format` support, just using %-interpolation Coming soon: - Rationale section ;) ================================================================================ PEP: 461 Title: Adding % formatting to bytes Version: $Revision$ Last-Modified: $Date$ Author: Ethan Furman <ethan(a)stoneleaf.us> Status: Draft Type: Standards Track Content-Type: text/x-rst Created: 2014-01-13 Python-Version: 3.5 Post-History: 2014-01-14, 2014-01-15, 2014-01-17 Resolution: Abstract ======== This PEP proposes adding % formatting operations similar to Python 2's str type to bytes [1]_ [2]_. Overriding Principles ===================== In order to avoid the problems of auto-conversion and Unicode exceptions that could plague Py2 code, all object checking will be done by duck-typing, not by values contained in a Unicode representation [3]_. Proposed semantics for bytes formatting ======================================= %-interpolation --------------- All the numeric formatting codes (such as %x, %o, %e, %f, %g, etc.) will be supported, and will work as they do for str, including the padding, justification and other related modifiers. Example:: >>> b'%4x' % 10 b' a' >>> '%#4x' % 10 ' 0xa' >>> '%04X' % 10 '000A' %c will insert a single byte, either from an int in range(256), or from a bytes argument of length 1, not from a str. Example: >>> b'%c' % 48 b'0' >>> b'%c' % b'a' b'a' %s is restricted in what it will accept:: - input type supports Py_buffer? use it to collect the necessary bytes - input type is something else? use its __bytes__ method; if there isn't one, raise a TypeError Examples: >>> b'%s' % b'abc' b'abc' >>> b'%s' % 3.14 Traceback (most recent call last): ... TypeError: 3.14 has no __bytes__ method >>> b'%s' % 'hello world!' Traceback (most recent call last): ... TypeError: 'hello world' has no __bytes__ method, perhaps you need to encode it? .. note:: Because the str type does not have a __bytes__ method, attempts to directly use 'a string' as a bytes interpolation value will raise an exception. To use 'string' values, they must be encoded or otherwise transformed into a bytes sequence:: 'a string'.encode('latin-1') Numeric Format Codes -------------------- To properly handle int and float subclasses, int(), index(), and float() will be called on the objects intended for (d, i, u), (b, o, x, X), and (e, E, f, F, g, G). Unsupported codes ----------------- %r (which calls __repr__), and %a (which calls ascii() on __repr__) are not supported. Proposed variations =================== It was suggested to let %s accept numbers, but since numbers have their own format codes this idea was discarded. It has been suggested to use %b for bytes instead of %s. - Rejected as %b does not exist in Python 2.x %-interpolation, which is why we are using %s. It has been proposed to automatically use .encode('ascii','strict') for str arguments to %s. - Rejected as this would lead to intermittent failures. Better to have the operation always fail so the trouble-spot can be correctly fixed. It has been proposed to have %s return the ascii-encoded repr when the value is a str (b'%s' % 'abc' --> b"'abc'"). - Rejected as this would lead to hard to debug failures far from the problem site. Better to have the operation always fail so the trouble-spot can be easily fixed. Originally this PEP also proposed adding format style formatting, but it was decided that format and its related machinery were all strictly text (aka str) based, and it was dropped. Various new special methods were proposed, such as __ascii__, __format_bytes___, etc.; such methods are not needed at this time, but can be visited again later if real-world use shows deficiencies with this solution. Footnotes ========= .. [1] http://docs.python.org/2/library/stdtypes.html#string-formatting .. [2] neither string.Template, format, nor str.format are under consideration. .. [3] %c is not an exception as neither of its possible arguments are unicode. Copyright ========= This document has been placed in the public domain. .. Local Variables: mode: indented-text indent-tabs-mode: nil sentence-end-double-space: t fill-column: 70 coding: utf-8 End: ================================================================================

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Migration from Python 2.7 and bytes formatting
by Neil Schemenauer 19 Jan '14

19 Jan '14

As I see it, there are two separate goals in adding formatting methods to bytes. One is to make it easier to write new programs that manipulate byte data. Another is to make it easier to upgrade Python 2.x programs to Python 3.x. Here is an idea to better address these separate goals. Introduce %-interpolation for bytes. Support the following format codes to aid in writing new code: %b: insert arbitrary bytes (via __bytes__ or Py_buffer) %[dox]: insert an integer, encoded as ASCII %[eEfFgG]: insert a float, encoded as ASCII %a: call ascii(), insert result Add a command-line option, disabled by default, that enables the following format codes: %s: if the object has __bytes__ or Py_buffer then insert it. Otherwise, call str() and encode with the 'ascii' codec %r: call repr(), encode with the 'ascii' codec %[iuX]: as per Python 2.x, for backwards compatibility Introducing these extra codes and the command-line option will provide a more gradual upgrade path. The next step in porting could be to examine each %s inside bytes literals and decide if they should either be converted to %b or if the literal should be converted to a unicode literal. Any %r codes could likely be safely changed to %a.

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Re: [Python-Dev] PEP 461 updates
by Chris Barker 18 Jan '14

18 Jan '14

I hope you didn't mean to take this off-list: On Fri, Jan 17, 2014 at 2:06 PM, Neil Schemenauer <nas(a)arctrix.com> wrote: > In gmane.comp.python.devel, you wrote: > > For the record, we've got a pretty good thread (not this good, though!) > > over on the numpy list about how to untangle the mess that has resulted > > Not sure about your definition of good. ;-) well, in the sense of "big" anyway... > Could you summarize the main points on python-dev? I'm not feeling up to > wading through > another massive thread but I'm quite interested to hear the > challenges that numpy deals with. Well, not much new to it, really. But here's a re-cap: numpy has had an 'S' dtype for a while, which corresponded to the py2 string type (except for being fixed length). So it could auto-convert to-from python strings... all was good and happy. Enter py3: what to do? there is no py2 string type anymore. So it was decided to have the 'S' dtype correspond to the py3 bytes type. Apparently there was thought of renaming it, but the 'B' and 'b' type identifiers were already takes, so 'S' was kept. However, as we all know in this thread, the py3 bytes type is not the same thing as a py2 string (or py2 bytes, natch), and folks like to use the 'S' type for text data -- so that is kind of broken in py3. However, other folks use the 'S' type for binary data, so like (and rely on) it being mapped to the py3 bytes type. So we are stuck with that. Given the nature of numpy, and scientific data, there is talk of having a one-byte-per-char text type in numpy (there is already a unicode type, but it uses 4-bytes-per-char, as it's key to the numpy data model that all objects of a given type are the same size.) This would be analogous to the current multiple precision options for numbers. It would take up less memory, and would not be able to hold all values. It's not clear what the level of support is for this right now -- after all, you can do everything you need to do with the appropriate calls to encode() and decode(), if a bit awkward. Meanwhile, back at the ranch -- related, but separate issues have arisen with the functions that parse text files: numpy.loadtxt and numpy.genfromtxt. These functions were adapted for py3 just enough to get things to mostly work, but have some serious limitations when doing anything with unicode -- and in fact do some weird things with plain ascii text files if you ask it to create unicode objects, and that is a natural thing to do (and the "right" thing to do in the Py3 text model) if you do something like: arr = loadtxt('a_file_name', dtype=str) on py3, an str is a py3unicode string, so you get the numpy 'U' datatype but loadtxt wasn't designed to deal with that, so you can get stuff like: ["b'C:\\\\Users\\\\Documents\\\\Project\\\\mytextfile1.txt'" "b'C:\\\\Users\\\\Documents\\\\Project\\\\mytextfile2.txt'" "b'C:\\\\Users\\\\Documents\\\\Project\\\\mytextfile3.txt'"] This was (Presumably, I haven't debugged the code) due to conversion from bytes to unicode...(I'm still confused about the extra slashes) And this ascii text -- it gets worse if there is non-ascii text in there. Anyway, the truth is, this stuff is hard, but it will get at least a touch easier with PEP 461. [though to be truthful, I'm not sure why someone put a comment in the issue tracker about b'%d'%some_num being an issue ... I'm not sure how when we're going from text to numbers, not the other way around...] -Chris -- Christopher Barker, Ph.D. Oceanographer Emergency Response Division NOAA/NOS/OR&R (206) 526-6959 voice 7600 Sand Point Way NE (206) 526-6329 fax Seattle, WA 98115 (206) 526-6317 main reception Chris.Barker(a)noaa.gov

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Summary of Python tracker Issues
by Python tracker 18 Jan '14

18 Jan '14

ACTIVITY SUMMARY (2014-01-10 - 2014-01-17) 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 4437 (+28) closed 27624 (+44) total 32061 (+72) Open issues with patches: 2012 Issues opened (47) ================== #14455: plistlib unable to read json and binary plist files http://bugs.python.org/issue14455 reopened by ronaldoussoren #20218: Add `pathlib.Path.write` and `pathlib.Path.read` http://bugs.python.org/issue20218 opened by cool-RR #20219: ElementTree: allow passing XMLPullParser instance into iterpar http://bugs.python.org/issue20219 opened by scoder #20220: TarFile.list() outputs wrong time http://bugs.python.org/issue20220 opened by serhiy.storchaka #20221: #define hypot _hypot conflicts with existing definition http://bugs.python.org/issue20221 opened by tabrezm #20222: unittest.mock-examples doc uses builtin file which is removed http://bugs.python.org/issue20222 opened by naoki #20223: inspect.signature does not support new functools.partialmethod http://bugs.python.org/issue20223 opened by yselivanov #20224: C API docs need a clear "defining custom extension types" sect http://bugs.python.org/issue20224 opened by ncoghlan #20227: Argument Clinic: rename arguments in generated C? http://bugs.python.org/issue20227 opened by georg.brandl #20230: structseq types should expose _fields http://bugs.python.org/issue20230 opened by abarnert #20231: Argument Clinic accepts no-default args after default args http://bugs.python.org/issue20231 opened by rmsr #20233: Re-enable buffer API slots for heap types http://bugs.python.org/issue20233 opened by Benno.Rice #20237: Ambiguous sentence in document of xml package. http://bugs.python.org/issue20237 opened by naoki #20238: Incomplete gzip output with tarfile.open(fileobj=..., mode="w: http://bugs.python.org/issue20238 opened by vadmium #20239: Allow repeated deletion of unittest.mock.Mock attributes http://bugs.python.org/issue20239 opened by michael.foord #20241: Bad reference to RFC in document of ipaddress? http://bugs.python.org/issue20241 opened by naoki #20243: ReadError when open a tarfile for writing http://bugs.python.org/issue20243 opened by serhiy.storchaka #20244: Possible resources leak in tarfile.open() http://bugs.python.org/issue20244 opened by serhiy.storchaka #20245: Check empty mode in TarFile.*open() http://bugs.python.org/issue20245 opened by serhiy.storchaka #20247: Condition._is_owned is wrong http://bugs.python.org/issue20247 opened by Antony.Lee #20249: test_posix.test_initgroups fails when running with no suppleme http://bugs.python.org/issue20249 opened by Rosuav #20252: Argument Clinic howto: small typo in y# translation http://bugs.python.org/issue20252 opened by rmsr #20254: Duplicate bytearray test on test_socket.py http://bugs.python.org/issue20254 opened by vajrasky #20256: Argument Clinic: compare signed and unsigned ints http://bugs.python.org/issue20256 opened by serhiy.storchaka #20257: test_socket fails if using tipc module and SELinux enabled http://bugs.python.org/issue20257 opened by vajrasky #20260: Argument Clinic: add unsigned integers converters http://bugs.python.org/issue20260 opened by serhiy.storchaka #20261: Cannot pickle some objects that have a __getattr__() http://bugs.python.org/issue20261 opened by barry #20262: Convert some debugging prints in zipfile to warnings http://bugs.python.org/issue20262 opened by serhiy.storchaka #20264: Update patchcheck to looks for files with clinic comments http://bugs.python.org/issue20264 opened by meador.inge #20265: Bring Doc/using/windows up to date http://bugs.python.org/issue20265 opened by zach.ware #20266: Bring Doc/faq/windows up to date http://bugs.python.org/issue20266 opened by zach.ware #20267: TemporaryDirectory does not resolve path when created using a http://bugs.python.org/issue20267 opened by Antony.Lee #20269: Inconsistent behavior in pdb when pressing Ctrl-C http://bugs.python.org/issue20269 opened by xdegaye #20270: urllib.parse doesn't work with empty port http://bugs.python.org/issue20270 opened by serhiy.storchaka #20271: urllib.parse.urlparse() accepts wrong URLs http://bugs.python.org/issue20271 opened by serhiy.storchaka #20274: sqlite module has bad argument parsing code, including undefin http://bugs.python.org/issue20274 opened by larry #20275: asyncio: remove debug code from BaseEventLoop http://bugs.python.org/issue20275 opened by yselivanov #20276: ctypes._dlopen should not force RTLD_NOW http://bugs.python.org/issue20276 opened by Albert.Zeyer #20280: add "predicate" to the glossary http://bugs.python.org/issue20280 opened by flox #20281: time.strftime %z format specifier is the same as %Z http://bugs.python.org/issue20281 opened by Mike.Owens #20282: Argument Clinic: int with boolean default http://bugs.python.org/issue20282 opened by serhiy.storchaka #20283: Wrong keyword parameter name in regex pattern methods http://bugs.python.org/issue20283 opened by serhiy.storchaka #20284: proof for concept patch for bytes formatting methods http://bugs.python.org/issue20284 opened by nascheme #20285: Improve object.__doc__ and help(object) output http://bugs.python.org/issue20285 opened by terry.reedy #20287: Argument Clinic: support diverting output to buffer, external http://bugs.python.org/issue20287 opened by larry #20288: HTMLParse handing of non-numeric charrefs broken http://bugs.python.org/issue20288 opened by iko #20289: Make cgi.FieldStorage a context manager http://bugs.python.org/issue20289 opened by brett.cannon Most recent 15 issues with no replies (15) ========================================== #20289: Make cgi.FieldStorage a context manager http://bugs.python.org/issue20289 #20288: HTMLParse handing of non-numeric charrefs broken http://bugs.python.org/issue20288 #20285: Improve object.__doc__ and help(object) output http://bugs.python.org/issue20285 #20283: Wrong keyword parameter name in regex pattern methods http://bugs.python.org/issue20283 #20282: Argument Clinic: int with boolean default http://bugs.python.org/issue20282 #20271: urllib.parse.urlparse() accepts wrong URLs http://bugs.python.org/issue20271 #20270: urllib.parse doesn't work with empty port http://bugs.python.org/issue20270 #20269: Inconsistent behavior in pdb when pressing Ctrl-C http://bugs.python.org/issue20269 #20267: TemporaryDirectory does not resolve path when created using a http://bugs.python.org/issue20267 #20265: Bring Doc/using/windows up to date http://bugs.python.org/issue20265 #20257: test_socket fails if using tipc module and SELinux enabled http://bugs.python.org/issue20257 #20254: Duplicate bytearray test on test_socket.py http://bugs.python.org/issue20254 #20249: test_posix.test_initgroups fails when running with no suppleme http://bugs.python.org/issue20249 #20245: Check empty mode in TarFile.*open() http://bugs.python.org/issue20245 #20244: Possible resources leak in tarfile.open() http://bugs.python.org/issue20244 Most recent 15 issues waiting for review (15) ============================================= #20287: Argument Clinic: support diverting output to buffer, external http://bugs.python.org/issue20287 #20284: proof for concept patch for bytes formatting methods http://bugs.python.org/issue20284 #20283: Wrong keyword parameter name in regex pattern methods http://bugs.python.org/issue20283 #20275: asyncio: remove debug code from BaseEventLoop http://bugs.python.org/issue20275 #20270: urllib.parse doesn't work with empty port http://bugs.python.org/issue20270 #20269: Inconsistent behavior in pdb when pressing Ctrl-C http://bugs.python.org/issue20269 #20264: Update patchcheck to looks for files with clinic comments http://bugs.python.org/issue20264 #20262: Convert some debugging prints in zipfile to warnings http://bugs.python.org/issue20262 #20260: Argument Clinic: add unsigned integers converters http://bugs.python.org/issue20260 #20257: test_socket fails if using tipc module and SELinux enabled http://bugs.python.org/issue20257 #20254: Duplicate bytearray test on test_socket.py http://bugs.python.org/issue20254 #20252: Argument Clinic howto: small typo in y# translation http://bugs.python.org/issue20252 #20249: test_posix.test_initgroups fails when running with no suppleme http://bugs.python.org/issue20249 #20245: Check empty mode in TarFile.*open() http://bugs.python.org/issue20245 #20244: Possible resources leak in tarfile.open() http://bugs.python.org/issue20244 Top 10 most discussed issues (10) ================================= #20275: asyncio: remove debug code from BaseEventLoop http://bugs.python.org/issue20275 24 msgs #20189: inspect.Signature doesn't recognize all builtin types http://bugs.python.org/issue20189 15 msgs #20186: Derby #18: Convert 31 sites to Argument Clinic across 23 files http://bugs.python.org/issue20186 12 msgs #20172: Derby #3: Convert 67 sites to Argument Clinic across 4 files ( http://bugs.python.org/issue20172 10 msgs #19936: Executable permissions of Python source files http://bugs.python.org/issue19936 9 msgs #20227: Argument Clinic: rename arguments in generated C? http://bugs.python.org/issue20227 9 msgs #14455: plistlib unable to read json and binary plist files http://bugs.python.org/issue14455 8 msgs #20185: Derby #17: Convert 49 sites to Argument Clinic across 13 files http://bugs.python.org/issue20185 8 msgs #20281: time.strftime %z format specifier is the same as %Z http://bugs.python.org/issue20281 8 msgs #20260: Argument Clinic: add unsigned integers converters http://bugs.python.org/issue20260 7 msgs Issues closed (43) ================== #5803: email/quoprimime: encode and decode are very slow on large mes http://bugs.python.org/issue5803 closed by r.david.murray #6625: UnicodeEncodeError on pydoc's CLI http://bugs.python.org/issue6625 closed by berker.peksag #18960: First line can be executed twice http://bugs.python.org/issue18960 closed by serhiy.storchaka #19082: Lib/xmlrpc/client.py demo code points to the dead server http://bugs.python.org/issue19082 closed by orsenthil #19097: bool(cgi.FieldStorage(...)) may be False unexpectedly http://bugs.python.org/issue19097 closed by orsenthil #19534: normalize() in locale.py fails for sr_RS.UTF-8@latin http://bugs.python.org/issue19534 closed by serhiy.storchaka #19886: Better estimated memory requirements for bigmem tests http://bugs.python.org/issue19886 closed by serhiy.storchaka #20009: Property should expose wrapped function. http://bugs.python.org/issue20009 closed by ncoghlan #20072: Ttk tests fail when wantobjects is false http://bugs.python.org/issue20072 closed by serhiy.storchaka #20086: test_locale fails with Turkish locale http://bugs.python.org/issue20086 closed by serhiy.storchaka #20138: wsgiref on Python 3.x incorrectly implements URL handling caus http://bugs.python.org/issue20138 closed by serhiy.storchaka #20196: Argument Clinic generates invalid code for optional parameter http://bugs.python.org/issue20196 closed by larry #20201: Argument Clinic: rwbuffer support broken http://bugs.python.org/issue20201 closed by larry #20202: ArgumentClinic howto: document change in Py_buffer lifecycle m http://bugs.python.org/issue20202 closed by rmsr #20206: email quoted-printable encoding issue http://bugs.python.org/issue20206 closed by r.david.murray #20208: Clarify some things in porting HOWTO http://bugs.python.org/issue20208 closed by brett.cannon #20214: Argument Clinic rollup fixes http://bugs.python.org/issue20214 closed by larry #20225: Argument Clinic: simplify METH_NOARGS generated code http://bugs.python.org/issue20225 closed by larry #20226: Argument Clinic: support for simple expressions? http://bugs.python.org/issue20226 closed by larry #20228: Argument Clinic should understand Python special methods http://bugs.python.org/issue20228 closed by larry #20229: platform.py uses deprecated feature of plistlib http://bugs.python.org/issue20229 closed by ned.deily #20232: Argument Clinic NULL default falsely implies None acceptabilit http://bugs.python.org/issue20232 closed by rmsr #20234: Argument Clinic: use PyTuple_GET_SIZE? http://bugs.python.org/issue20234 closed by larry #20235: Argument Clinic: recover a bit more gracefully from exceptions http://bugs.python.org/issue20235 closed by python-dev #20236: Invalid inline markup in xml document. http://bugs.python.org/issue20236 closed by r.david.murray #20240: Whitespace ignored in relative imports: from.package import so http://bugs.python.org/issue20240 closed by eric.smith #20242: logging style parameter does not work correctly http://bugs.python.org/issue20242 closed by python-dev #20246: buffer overflow in socket.recvfrom_into http://bugs.python.org/issue20246 closed by python-dev #20248: docs: socket.recvmsg{,_into} are keword-compatible http://bugs.python.org/issue20248 closed by rmsr #20250: defaultdict docstring neglects the *args http://bugs.python.org/issue20250 closed by python-dev #20251: socket.recvfrom_into crash with empty buffer http://bugs.python.org/issue20251 closed by python-dev #20253: Typo in ipaddress document http://bugs.python.org/issue20253 closed by python-dev #20255: Doc/about: update a bit http://bugs.python.org/issue20255 closed by zach.ware #20258: Python documentation build fails with "markupsafe module canno http://bugs.python.org/issue20258 closed by python-dev #20259: os.walk conflicts with os.listdir http://bugs.python.org/issue20259 closed by r.david.murray #20263: Function print definable as variables? http://bugs.python.org/issue20263 closed by r.david.murray #20268: Argument Clinic: support cloning existing functions http://bugs.python.org/issue20268 closed by larry #20272: chain.from_iterable in the overview table not linking to the f http://bugs.python.org/issue20272 closed by python-dev #20273: Argument Clinic: unhelpful crashes http://bugs.python.org/issue20273 closed by larry #20277: default __debug__ value and asserts http://bugs.python.org/issue20277 closed by michael.foord #20278: Wrong URL to the pysqlite web page http://bugs.python.org/issue20278 closed by python-dev #20279: bytearray.fromhex does not work with some hexes generated by h http://bugs.python.org/issue20279 closed by Anatoly Belikov #20286: Segfault when using internal DictProxy http://bugs.python.org/issue20286 closed by benjamin.peterson

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AC Derby and accepting None for optional positional arguments
by Ryan Smith-Roberts 17 Jan '14

17 Jan '14

One of the downsides of converting positional-only functions to Argument Clinic is that it can result in misleading docstring signatures. Example: socket.getservbyname(servicename[, protocolname]) -> socket.getservbyname(servicename, protocolname=None) The problem with the new signature is that it indicates passing None for protocolname is the same as omitting it (the other, much larger problem is that it falsely indicates keyword compatibility, but that's a separate indoor elephant). My question: Is it OK to change a longstanding function to treat None like an absent parameter, where previously it was an error? (This also entails a docs update and maybe a changelog entry)

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Closing the Clinic output format debate (at least for now)
by Larry Hastings 17 Jan '14

17 Jan '14

The current tally of votes, by order of popularity: Side file: +6 Buffer: +1.5 Multiple buffers, Modified buffer, Forward buffer: +1 Original: -5 However, as stated, support for "side files" will not go in unless Guido explicitly states that it's okay with him. He has not. Therefore it's not going in. If you want this feature, take it up with our BDFL. I feel my hands are tied. Second-best is all the buffer approaches, collectively. Since there was no clear winner, I'm going to make the new default the "modified buffer" approach, as that's the only one that does not require rearranging your code to use. However, to encourage continued experimentation, I'm going to leave in the configurability (at least for now), so people can keep experimenting. Maybe we'll find something in the future that's a clear new favorite. As a stretch goal, I'd like to also add Zachary Ware's proposed "forward" buffer, as a further concession to experimentation. It shouldn't be too messy, but if it gets out of hand I'll back out of it. Finally, I'm going to add support for "presets" so you can switch between original / modified buffer / buffer / forward buffer with just one statement. (Multiple buffers doesn't need a different preset.) I'll also keep the line prefix (and add a line suffix too) and see if a prefix of "/*clinic*/" helps. //arry/

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python code in argument clinic annotations
by Yury Selivanov 17 Jan '14

17 Jan '14

The whole discussion of whether clinic should write its output right in the source file (buffered or not), or in a separate sidefile, started because we currently cannot run the clinic during the build process, since it’s written in python. But what if, at some point, someone implements the Tools/clinic.py in pure C, so that integrating it directly in the build process will be possible? In this case, the question is — should we use python code in the argument clinic DSL? If we keep it strictly declarative, then, at least, we’ll have this possibility in the future. -- Yury Selivanov

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Re: [Python-Dev] cpython: asyncio: Fix CoroWrapper (fix my previous commit)
by Antoine Pitrou 17 Jan '14

17 Jan '14

On Thu, 16 Jan 2014 01:55:43 +0100 (CET) victor.stinner <python-checkins(a)python.org> wrote: > http://hg.python.org/cpython/rev/f07161c4f3aa > changeset: 88494:f07161c4f3aa > user: Victor Stinner <victor.stinner(a)gmail.com> > date: Thu Jan 16 01:55:29 2014 +0100 > summary: > asyncio: Fix CoroWrapper (fix my previous commit) > > Add __name__ and __doc__ to __slots__ > > files: > Lib/asyncio/tasks.py | 4 +--- > 1 files changed, 1 insertions(+), 3 deletions(-) > > > diff --git a/Lib/asyncio/tasks.py b/Lib/asyncio/tasks.py > --- a/Lib/asyncio/tasks.py > +++ b/Lib/asyncio/tasks.py > @@ -32,9 +32,7 @@ > > > class CoroWrapper: > - """Wrapper for coroutine in _DEBUG mode.""" > - > - __slots__ = ['gen', 'func'] > + __slots__ = ['gen', 'func', '__name__', '__doc__'] > Why did you remove the docstring? Regards Antoine.

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