[issue17963] Deprecate the frame hack for implicitly getting module details
Eli Bendersky added the comment: I don't have time, unfortunately. So other folks can pick this up. I don't remember if I made any progress on this - will post whatever I have if I find something. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17963 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23520] test_os failed (python-3.4.3)
New submission from Alexey: Just one test failed for python-3.4.3 ... test_invalid_offset (test.test_os.TestSendfile) ... FAIL ... -- files: test_os_log messages: 236574 nosy: avoevodkin priority: normal severity: normal status: open title: test_os failed (python-3.4.3) versions: Python 3.4 Added file: http://bugs.python.org/file38232/test_os_log ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23520 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22094] oss_audio_device.write(data) produces short writes
Alex Shkop added the comment: It seems to me that OSS device doesn't accept more than SNDCTL_DSP_GETOSPACE. Looks like this depends on OSS version because OSS docs state that since 4.x one shouldn't use SNDCTL_DSP_GETOSPACE at all [http://manuals.opensound.com/developer/SNDCTL_DSP_GETOSPACE.html]. I have OSS 3.8.2 and I can reproduce the bug. Can someone with OSS = 4.0 confirm that dsp.write() works as expected? -- nosy: +ashkop ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22094 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23511] Broken code example in email module documentation
Baptiste Mispelon added the comment: I wasn't sure if that was going to be out of scope or not. Here's an attached patch that fixes the remaining usages of `open` inside `Doc/includes` to always use a context manager. -- Added file: http://bugs.python.org/file38233/issue23511_open_cm.diff ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23511 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23496] Steps for Android Native Build of Python 3.4.2
R. David Murray added the comment: There is a github mirror of the hg repository (https://github.com/python/cpython). Patches produced from it don't automatically get review links in the tracker, but at least they would then be against the most current source (and someone else could regenerate them). That would at least allow you to skip the port mercurial step. On the other hand, it sounds like Ryan may be volunteering to update the patches to apply to the head of default for you. (And yes, Ryan, the patches should be against the head of the default branch.) Now, whether or not we will accept the patches is a different discussion, but I'd certainly like to see more Android support in our tree myself. -- nosy: +r.david.murray ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23496 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23511] Broken code example in email module documentation
R. David Murray added the comment: Looks like the example wasn't updated during the python3 transition. As long as we are changing it, we might as well make it use the file as a context manager. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23511 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23520] test_os failed (python-3.4.3)
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[issue23517] datetime.utcfromtimestamp parses timestamps incorrectly
R. David Murray added the comment: Most likely this was a rounding fix (ie: not a bug), but hopefully Alexander will know for sure. -- nosy: +r.david.murray ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23517 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue20187] The Great Argument Clinic Conversion Derby Meta-Issue
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[issue20179] Derby #10: Convert 50 sites to Argument Clinic across 4 files
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[issue20175] Derby #6: Convert 50 sites to Argument Clinic across 8 files
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[issue20461] Argument Clinic included return converters hard code use of ``_return_value``
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[issue20178] Derby #9: Convert 52 sites to Argument Clinic across 11 files
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[issue20168] Derby: Convert the _tkinter module to use Argument Clinic
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[issue20177] Derby #8: Convert 28 sites to Argument Clinic across 2 files
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[issue20182] Derby #13: Convert 50 sites to Argument Clinic across 5 files
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[issue20396] Argument Clinic: Touch source file if any output file changed
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[issue23515] Bad logic in timsort's merge_collapse
Roundup Robot added the comment: New changeset 325aec842e3e by Benjamin Peterson in branch '2.7': fix merge_collapse to actually maintain the invariant it purports to (closes #23515) https://hg.python.org/cpython/rev/325aec842e3e New changeset 620cb13008b7 by Benjamin Peterson in branch '3.4': fix merge_collapse to actually maintain the invariant it purports to (closes #23515) https://hg.python.org/cpython/rev/620cb13008b7 New changeset be5ddc8b6a88 by Benjamin Peterson in branch 'default': merge 3.4 (#23515) https://hg.python.org/cpython/rev/be5ddc8b6a88 -- nosy: +python-dev resolution: - fixed stage: needs patch - resolved status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23515 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue20304] Argument Clinic: char convertor should use default values of type bytes
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[issue20410] Argument Clinic: add 'self' return converter
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[issue20173] Derby #4: Convert 53 sites to Argument Clinic across 5 files
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[issue20171] Derby #2: Convert 115 sites to Argument Clinic in Modules/_cursesmodule.c
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[issue20172] Derby #3: Convert 67 sites to Argument Clinic across 4 files (Windows)
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[issue20264] Update patchcheck to looks for files with clinic comments
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[issue23517] datetime.utcfromtimestamp parses timestamps incorrectly
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[issue23518] Misplaced diagnostic caret for some SyntaxErrors
Zachary Ware added the comment: The problem is, the interpreter can't know what you meant to do, so it can only point out what it can't compile. We did recently add a special case for print without parentheses, but adding special cases for everything is just not feasible. Besides, where should the caret point in each of these cases, why, and how would you explain it to the parser? for x in the range(10): for x in range(10) the: for x in range(10) range(10): for each x in range(10): for x each in range(10): Those are just some of the possibilities for just the for statement, let alone every other statement, or even every place an expression can be used. If you can come up with a good, simple, general patch that covers every case, please do so! I'm quite sure it would be accepted. But until then, I'm afraid this isn't going to happen. -- status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23518 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue20159] Derby #7: Convert 51 sites to Argument Clinic across 3 files - Derby: Convert the ElementTree module to use Argument Clinic
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[issue23500] Argument Clinic: multiple macro definition
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[issue23517] datetime.utcfromtimestamp parses timestamps incorrectly
Alexander Belopolsky added the comment: Victor's motivation for the change was (msg154811): I chose this rounding method because it is the method used by int(float) and int(time.time()) is a common in programs (more than round(time.time()). Rounding towards zero avoids also producing timestamps in the future. I recall the earlier discussions of rounding in the datetime module and Mark's explanation that rounding up is fine as long as ordering is preserved. i.e. for x y round(x) = round(y). There are cases when producing times in the future are problematic, for example UNIX make really dislikes when file timestamps are in the future, but if this was the main motivation - rounding towards -infinity would be more appropriate. In any case, as long as we have the following in the datetime module documentation, I think this behavior is a bug: On the POSIX compliant platforms, utcfromtimestamp(timestamp) is equivalent to the following expression: datetime(1970, 1, 1) + timedelta(seconds=timestamp) timestamp = 1424817268.274 datetime.utcfromtimestamp(timestamp) == datetime(1970, 1, 1) + timedelta(seconds=timestamp) False -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23517 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23511] Broken code example in email module documentation
Roundup Robot added the comment: New changeset 89c6a6c2dd1f by Berker Peksag in branch '3.4': Issue #23511: Port email-simple.py to Python 3. https://hg.python.org/cpython/rev/89c6a6c2dd1f New changeset cb911e1fb3dc by Berker Peksag in branch 'default': Issue #23511: Port email-simple.py to Python 3. https://hg.python.org/cpython/rev/cb911e1fb3dc -- nosy: +python-dev ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23511 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23517] datetime.utcfromtimestamp parses timestamps incorrectly
Alexander Belopolsky added the comment:
Let me dig up the history, but this does not look like correct rounding to me:
datetime.utcfromtimestamp(1424817268.274)
datetime.datetime(2015, 2, 24, 22, 34, 28, 273999)
decimal.Decimal(1424817268.274)
Decimal('1424817268.273294281005859375')
--
nosy: +mark.dickinson
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[issue20260] Argument Clinic: add unsigned integers converters
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[issue20346] Argument Clinic: missing entry in table mapping legacy convertors to real AC converters
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[issue23517] datetime.utcfromtimestamp parses timestamps incorrectly
Alexander Belopolsky added the comment: It looks like it was an intentional change. See #14180 (changeset 75590:1e9cc1a03365). I am not sure what the motivation was. Note that this change made utcfromtimestamp(t) different from datetime(1970,1,1) + timedelta(seconds=t). -- keywords: +3.2regression ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23517 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue20341] Argument Clinic: add nullable ints
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[issue20174] Derby #5: Convert 50 sites to Argument Clinic across 3 files
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[issue23501] Argument Clinic: generate code into separate files by default
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[issue20148] Derby: Convert the _sre module to use Argument Clinic
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[issue23283] Backport Tools/clinic to 3.4
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[issue23515] Bad logic in timsort's merge_collapse
Tim Peters added the comment: @Benjamin, bless you for changing their n-1 0 to n 1, and for adding parentheses to make the intended grouping obvious instead of a puzzle, and for swapping the addends on the RHS of the new test. Thank you - perfect :-) -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23515 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23518] Misplaced diagnostic caret for some SyntaxErrors
Zack Weinberg added the comment: In terms of the formal grammar of the language, you are correct. However, the position of the caret should be chosen based *not* on the formal grammar, but on a heuristic estimation of what the most probable mistake actually is. In both of the cases I listed, the most probable mistake is as I described. Please reconsider. -- status: closed - open ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23518 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue20256] Argument Clinic: compare signed and unsigned ints
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[issue20303] Argument Clinic: optional groups
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[issue23496] Steps for Android Native Build of Python 3.4.2
Cyd Haselton added the comment: Thanks for that suggestion R. David...that would be ideal given the 2.x requirements of Mercurial would mean i'd need to re-port Python before tackling a port of Mercurial. I'll wait until Ryan chimes in before I start serious work with git, just in case. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23496 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue20586] Argument Clinic: functions with valid sig but no docstring have no __text_signature__
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[issue20180] Derby #11: Convert 50 sites to Argument Clinic across 9 files
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[issue20183] Derby #14: Convert 41 sites to Argument Clinic across 5 files
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[issue20184] Derby #16: Convert 50 sites to Argument Clinic across 9 files
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[issue23492] Argument Clinic: improve generated parser for 1-argument functions
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[issue20181] Derby #12: Convert 50 sites to Argument Clinic across 4 files
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[issue20185] Derby #17: Convert 49 sites to Argument Clinic across 13 files
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[issue23517] datetime.utcfromtimestamp parses timestamps incorrectly
Alexander Belopolsky added the comment: I noticed that the rounding mode of datetime is currently wrong. What do you mean by currently? What versions of python have it wrong? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23517 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue20459] No Argument Clinic documentation on how to specify a return converter
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[issue20432] Argument Clinic: when cloning functions with path_t, path_t retains the old name
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[issue20323] Argument Clinic: docstring_prototype output causes build failure on Windows
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[issue20291] Argument Clinic should understand *args and **kwargs parameters
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[issue20186] Derby #18: Convert 31 sites to Argument Clinic across 23 files
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[issue21314] Document '/' in signatures
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[issue23517] datetime.utcfromtimestamp parses timestamps incorrectly
STINNER Victor added the comment:
I started a large change set to support nanoseconds in the C pytime API: see
the issue #22117. While working on this change, I noticed that the rounding
mode of datetime is currently wrong. Extract of a private patch:
typedef enum {
/* Round towards zero. */
_PyTime_ROUND_DOWN=0,
/* Round away from zero.
For example, used for timeout to wait at least N seconds. */
_PyTime_ROUND_UP=1,
/* Round towards minus infinity (-inf).
For example, used for the system clock with UNIX epoch (time_t). */
_PyTime_ROUND_FLOOR=2
} _PyTime_round_t;
I changed Modules/_datetimemodule.c to use _PyTime_ROUND_FLOOR, instead of
_PyTime_ROUND_DOWN.
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[issue23511] Broken code example in email module documentation
Berker Peksag added the comment: Thanks for the patch, Baptiste. -- resolution: - fixed stage: commit review - resolved status: open - closed type: - enhancement ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23511 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue20323] Argument Clinic: docstring_prototype output causes build failure on Windows
Zachary Ware added the comment: That may be for the best. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue20323 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23521] OverflowError from timedelta * float in datetime.py
Changes by Alexander Belopolsky alexander.belopol...@gmail.com: -- nosy: +bdkearns, benjamin.peterson ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23521 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23515] Bad logic in timsort's merge_collapse
Tim Peters added the comment: Since it's impossible to trigger the error on any current machine anyway (no machine has enough memory), increasing the size of the stack would be absurd. If you read the paper, they note that this is what the Java folks first did (they changed this part of timsort in a way that _did_ make it possible to provoke the stack overflow on current hardware). And they got it wrong, not increasing it enough. Without the _intended_ invariant, it's difficult to figure out how much is enough. It's not worth measuring performance. If there are a total of R runs in the input array, a total of R-1 merges will be performed (with or without the change). As explained in listsort.txt, per-merge overheads don't matter at all unless they're outrageous, because there are at most ceiling(len(array)/32) runs. So the total number of merges is a small fraction of the number of array elements (call that `N`), in an N*log(N) process. Adding a few native C integer comparisons per merge (as the change essentially does) is trivial. It may be possible to contrive inputs which run significantly slower (or faster!) with the change, because the order in which runs are merged may change. But then you'd just be chasing patterns of HW and OS layers-of-caching behavior specific to the box the test is running on. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23515 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23517] datetime.utcfromtimestamp parses timestamps incorrectly
Changes by Alexander Belopolsky alexander.belopol...@gmail.com: -- keywords: +3.3regression -3.2regression ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23517 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14721] httplib doesn't specify content-length header for POST requests without data
James Rutherford added the comment: The fix for this still doesn't set Content-Length to zero when body is None, but I don't see any reason why this should be the case. For example, the following snippet would work for any 'empty' body: if 'content-length' not in header_names: self._set_content_length(body if body is not None else '') I'm happy to produce a patch if there's any chance it would be merged. -- nosy: +jimr ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14721 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23496] Steps for Android Native Build of Python 3.4.2
Ryan Gonzalez added the comment: That's what I was saying; I'll update the patches myself. I highly doubt Cyd wants to re-port Python again. :0 I'll ask on python-dev on which would be preferred: configure.ac edits or macro tests. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23496 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue20323] Argument Clinic: docstring_prototype output causes build failure on Windows
Larry Hastings added the comment: Perhaps, now that Guido allows us to redirect into a separate file, we should simply abandon the two-pass approach. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue20323 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23515] Bad logic in timsort's merge_collapse
Serhiy Storchaka added the comment: Thank you for your explanation Tim. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23515 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23515] Bad logic in timsort's merge_collapse
Serhiy Storchaka added the comment: How additional test affects performance? May be just increase MAX_MERGE_PENDING? -- nosy: +serhiy.storchaka ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23515 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23519] using asyncio.iscoroutinefunction() on a functools.partial object
Guido van Rossum added the comment: I recall discussing this before (maybe on the tulip list). I am firmly against. It is a slippery slope -- why inspect a partial but not a lambda? Plus there is no use case. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23519 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue20323] Argument Clinic: docstring_prototype output causes build failure on Windows
Steve Dower added the comment:
Not sure how helpful this is, but the following code compiles fine for me (VC
12.0 and 14.0):
#include stdio.h
char myStr[];
struct { char* a; } myStruct = { myStr };
int main() {
printf(%s, myStruct.a);
return 0;
}
static char myStr[] = 123456789;
Any reason you can't define the forward definition like this? (It only seems to
work with myStr[] and not *myStr, for some reason.)
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[issue20323] Argument Clinic: docstring_prototype output causes build failure on Windows
Serhiy Storchaka added the comment: What if add const in PyDoc_VAR? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue20323 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue20323] Argument Clinic: docstring_prototype output causes build failure on Windows
Steve Dower added the comment: You need to leave static out of the forward definition and then add it in the initialization. The variable is not accessible from other object files - I checked. const char[] and static const char[] should work the same, though I haven't tried it. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue20323 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue18199] Windows: support path longer than 260 bytes using \\?\ prefix
Changes by Aaron Meurer asmeu...@gmail.com: -- nosy: +Aaron.Meurer ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue18199 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13077] Unclear behavior of daemon threads on main thread exit
Vandana Rao added the comment: Since the program depends on receiving a raw ^C == 0x03 on stdin, it will never be running under Idle because the Idle process tk gui normally keeps control of keyboard input and the Idle process code intercepts ^C and turns it into KeyboardInterrupt raised in the user process. This is not a bug anymore.It is working fine. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13077 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23517] datetime.utcfromtimestamp parses timestamps incorrectly
Alexander Belopolsky added the comment: For example, in my local patch, I'm using ROUND_FLOOR for: - datetime.date.fromtimestamp() - datetime.datetime.fromtimestamp() These should use ROUND_HALF_EVEN - datetime.datetime.now() - datetime.datetime.utcnow() These should not involve floating point arithmetics, but when converting from nanoseconds to microseconds, you should round to nearest 1000 ns with 500 ns ties resolved to even number of microseconds. - os.utime() This takes nanoseconds as an optional argument. Passing floats in times should probably be deprecated. In any case, here you would be rounding floats to nanoseconds and what you do with 0.5 nanoseconds is less important because in most cases they are not even representable as floats. - time.clock_settime() Is this a new method? I don't see it in 3.5.0a1. - time.gmtime() This should be fixed time.gmtime(1.9).tm_sec 1 is really bad and time.gmtime(-1.9)[:6] (1969, 12, 31, 23, 59, 59) is probably even worse. - time.localtime() - time.ctime() Same story as in time.gmtime. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23517 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue20323] Argument Clinic: docstring_prototype output causes build failure on Windows
Zachary Ware added the comment: (My last comment was aimed at Larry's comment about abandoning two-pass...) -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue20323 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23521] OverflowError from timedelta * float in datetime.py
New submission from Alexander Belopolsky: import sys sys.modules['_datetime'] = None from datetime import timedelta timedelta(seconds=1)*0.6112295 Traceback (most recent call last): File stdin, line 1, in module File /Users/a/Work/cpython/Lib/datetime.py, line 519, in __mul__ return self * a / b File /Users/a/Work/cpython/Lib/datetime.py, line 516, in __mul__ self._microseconds * other) File /Users/a/Work/cpython/Lib/datetime.py, line 411, in __new__ raise OverflowError(timedelta # of days is too large: %d % d) OverflowError: timedelta # of days is too large: 63720670102 C implementation is unaffected: from datetime import timedelta timedelta(seconds=1)*0.6112295 datetime.timedelta(0, 0, 611229) -- assignee: belopolsky components: Library (Lib) messages: 236602 nosy: belopolsky priority: normal severity: normal stage: needs patch status: open title: OverflowError from timedelta * float in datetime.py type: behavior versions: Python 3.5 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23521 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23521] OverflowError from timedelta * float in datetime.py
Alexander Belopolsky added the comment: Attached patch fixes the issue, but produces a slightly different result: timedelta(seconds=1)*0.6112295 datetime.timedelta(0, 0, 611230) Note that C implementation is probably buggy: from datetime import * timedelta(seconds=1)*0.6112295 datetime.timedelta(0, 0, 611229) timedelta(seconds=0.6112295) datetime.timedelta(0, 0, 611230) See msg194311 in #8860. -- keywords: +patch Added file: http://bugs.python.org/file38234/issue23521.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23521 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23517] datetime.utcfromtimestamp parses timestamps incorrectly
STINNER Victor added the comment: What do you mean by currently? What versions of python have it wrong? I search for ROUND in Modules/_datetimemodule.c: in the Python development branch (default), I found _PyTime_ROUND_DOWN (Round towards zero). Since a bug was reported, I understand that it's not the good rounding method? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23517 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23517] datetime.utcfromtimestamp parses timestamps incorrectly
Alexander Belopolsky added the comment: I don't understand nearest. Sorry for using loose terms. I was hoping the in the context of going back, it would be clear. I believe the correct mode is ROUND_HALF_EVEN. This is the mode used by the builtin round() function: round(0.5) 0 round(1.5) 2 -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23517 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23517] datetime.utcfromtimestamp parses timestamps incorrectly
Alexander Belopolsky added the comment: Victor, Would you consider going back to round to nearest? Mark and I put in a lot of effort to get the rounding in the datetime module right. (See for example, #8860.) Sub-microsecond timesources are still rare and users who work with such should avoid FP timestamps in any case. On the other hand, double precision timestamps are adequate for microsecond resolution now and in the next few decades. Timestamps like OP's (sec=1424817268, us=274000) should not change when converted to double and back. IMO, the following behavior is a bug. dt = datetime(2015, 2, 24, 22, 34, 28, 274000) datetime.utcfromtimestamp(dt.timestamp()) datetime.datetime(2015, 2, 25, 3, 34, 28, 273999) -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23517 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue20323] Argument Clinic: docstring_prototype output causes build failure on Windows
Serhiy Storchaka added the comment: You forgot static in the declaration Steve. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue20323 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23517] datetime.utcfromtimestamp parses timestamps incorrectly
STINNER Victor added the comment: Would you consider going back to round to nearest? I don't understand nearest. I prefer to use names of decimal rounding modes: https://docs.python.org/dev/library/decimal.html#rounding-modes In my local patch, I'm using ROUND_FLOOR in _decimal: Round towards -Infinity. Mark and I put in a lot of effort to get the rounding in the datetime module right. (See for example, #8860.) I'm unable right now to say which rounding mode should be used in the decimal module. But it's important to use the same rounding mode for all similar operations. For example, time.time() and datetime.datetime.now() should have the same rounding method (bad example, time.time() returns a float, which doesn't round the result). For example, in my local patch, I'm using ROUND_FLOOR for: - datetime.date.fromtimestamp() - datetime.datetime.fromtimestamp() - datetime.datetime.now() - datetime.datetime.utcnow() - os.utime() - time.clock_settime() - time.gmtime() - time.localtime() - time.ctime() Note: the Python implementation of datetime uses time.localtime() and time.gmtime() for fromtimestamp(), so these functions should also have the same rounding method. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23517 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23521] OverflowError from timedelta * float in datetime.py
Serhiy Storchaka added the comment: LGTM. But the bug in C implementation should be fixed. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23521 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23521] OverflowError from timedelta * float in datetime.py
Alexander Belopolsky added the comment: You can use self._to_microseconds(). Right. Did that and added a simple test. -- Added file: http://bugs.python.org/file38235/issue23521-2.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23521 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23522] Misleading note in Statistics module documentation
New submission from Jake: In the statistics module documentation, there is a note that states that The mean is strongly affected by outliers and is not a robust estimator for central location: the mean is not necessarily a typical example of the data points. For more robust, although less efficient, measures of central location, see median() and mode() https://docs.python.org/3/library/statistics.html While I appreciate the intention, this is quite misleading. The implication is that the mean, median and mode are different ways to estimate one central location, however, in reality they are very different things (albeit which refer to a similar notion). The sample mean is an unbiased estimator of the true mean but it need not be unbiased as an estimator of the true median or modes and vice versa for the median and mode. To make this clearer I would rephrase to The mean is strongly affected by outliers and is not necessarily representative of the central tendency of the data. For cases with large outliers or very low sample size, see median() and mode() Apologies if this is seen as frivolous, but statistics can be hard enough to remain very clear about even when the words are used precisely. -- assignee: docs@python components: Documentation messages: 236612 nosy: Journeyman08, docs@python priority: normal severity: normal status: open title: Misleading note in Statistics module documentation type: enhancement versions: Python 3.4 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23522 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23521] OverflowError from timedelta * float in datetime.py
Serhiy Storchaka added the comment: You can use self._to_microseconds(). -- nosy: +serhiy.storchaka ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23521 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23522] Misleading note in Statistics module documentation
Changes by SilentGhost ghost@gmail.com: -- nosy: +steven.daprano ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23522 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue20703] RuntimeError caused by lazy imports in pdb
Mark Lawrence added the comment: I can reproduce this on Windows 8.1 with 3.4.3 but cannot do so with 3.5.0a1. -- nosy: +BreamoreBoy versions: +Python 3.5 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue20703 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue20683] Add example to tutorial namespace doc, section 9.2
Mark Lawrence added the comment: What is wrong with the example given here https://docs.python.org/3/tutorial/classes.html#scopes-and-namespaces-example ? -- nosy: +BreamoreBoy ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue20683 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23515] Bad logic in timsort's merge_collapse
Terry J. Reedy added the comment: I sent a note to the lead author Stijn de Gouw and mentioned that the repository has moved from svn to hg.python.org. This change may be moot, but I think it worth our effort to keep our code as clean as possible and to encourage automated code checks, as we have by responding to issues raised by Coverity. Maybe next time, this group will find a bug that does matter now. -- nosy: +terry.reedy versions: +Python 2.7, Python 3.4, Python 3.5 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23515 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23515] Bad logic in timsort's merge_collapse
Tim Peters added the comment: Thanks, Terry! Absolutely agreed: a logical error is an error, and will bite us eventually, regardless of whether it does so today. I'm very glad the researchers went to all the trouble to analyze this one :-) -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23515 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7159] Urllib2 authentication memory.
Mark Lawrence added the comment: @Senthil what is your opinion of this? -- nosy: +BreamoreBoy type: behavior - resource usage versions: +Python 3.4, Python 3.5 -Python 3.1, Python 3.2 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7159 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21201] Uninformative error message in multiprocessing.Manager()
Mark Lawrence added the comment: Can someone review the patch with a view to commit please. It's a change to one line as explained in msg215934. -- nosy: +BreamoreBoy ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21201 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue20780] Shadowed (duplicate name but different body) test in test_statistics
Mark Lawrence added the comment: @Steven would you like to formally review the patch please. At a very quick glance it looks okay to me. -- nosy: +BreamoreBoy ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue20780 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue20780] Shadowed (duplicate name but different body) test in test_statistics
Benjamin Peterson added the comment: The duplicate tests have been renamed already. -- nosy: +benjamin.peterson resolution: - out of date status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue20780 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue20936] test_strftime: enormous allocation, fails under Clang sanitizer
Changes by Mark Lawrence breamore...@yahoo.co.uk: -- type: - resource usage ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue20936 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23521] OverflowError from timedelta * float in datetime.py
Alexander Belopolsky added the comment:
the bug in C implementation should be fixed.
In the past (see #8860) we were not able to reach a consensus on which behavior
is correct and which has a bug:
timedelta(seconds=1)*0.6112295
datetime.timedelta(0, 0, 611229)
timedelta(seconds=0.6112295)
datetime.timedelta(0, 0, 611230)
It all boils down to the the fact that
round(0.6112295*10**6)
611230
but
round(0.6112295, 6) * 10**6
611229.0
In my view, timedelta(seconds=1) is 10**6 microseconds and timedelta(seconds=1)
* 0.6112295 is 611229.5 microseconds which is correctly rounded to 611230 in
timedelta(seconds=0.6112295), but timedelta(seconds=1)*0.6112295 returning
611229 is incorrect.
If I understand Mark's argument correctly (see msg107097), he views timedeltas
as fractional number of seconds rather than integer number of microseconds and
in his view timedelta(seconds=0.6112295) is timedelta(seconds=0.6112295) is
0.6112294981 seconds because
Decimal(0.6112295)
Decimal('0.611229498116351207499974407255649566650390625')
Thus timedelta(seconds=0.6112295), 0.6112295 should be rounded down to 6
decimal places and result in 611229 microseconds.
Neither of us thought resolving this was important enough to hold other fixes.
In the same spirit, I suggest that we apply my current patch that fixes a crash
and pass the rounding curiosity down to the future generations.
--
nosy: +mark.dickinson
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[issue21293] Remove capsule hack from object.c?
Mark Lawrence added the comment: I've taken a bit of a liberty and picked the names of the last three guys who've worked on this file as I assume they're best qualified to comment. -- nosy: +BreamoreBoy, haypo, ncoghlan, pitrou ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21293 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
