| Commit message (Collapse) | Author | Age | Files | Lines |
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This adds C versions of methods used by ABCMeta that
improve performance of various ABC operations.
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Many metaclasses in the standard library don't play nice with
__init_subclass__. This bug makes ABCMeta in particular with
__init_subclass__, which is an 80/20 solution for me personally.
AFAICT, a general solution to this problem requires updating all
metaclasses in the standard library to make sure they pass **kwargs to
type.__new__, whereas this PR only fixes ABCMeta. For context, see
https://bugs.python.org/issue29581.
* added a test combining ABCMeta and __init_subclass__
* Added NEWS item
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fully qualified class names of Python implemented classes.
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Patch by Bruno Dupuis.
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Thanks to Darren Dale for patch.
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Spadolini (#10868).
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svn+ssh://pythondev@svn.python.org/python/trunk
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r77789 | benjamin.peterson | 2010-01-26 20:16:42 -0600 (Tue, 26 Jan 2010) | 1 line
raise a clear TypeError when trying to register a non-class
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svn+ssh://pythondev@svn.python.org/python/trunk
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r72278 | walter.doerwald | 2009-05-04 18:03:03 +0200 (Mo, 04 Mai 2009) | 2 lines
Fix typos.
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svn+ssh://pythondev@svn.python.org/python/trunk
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r66144 | nick.coghlan | 2008-09-02 20:14:47 +1000 (Tue, 02 Sep 2008) | 1 line
Issue 3747: Fix caching in ABCMeta.__subclasscheck__ (R: Georg Brandl)
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61038,61042-61045,61047,61050,61053,61055-61056,61061-61062,61066,61068,61070,61083,61085,61092-61103 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
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r61098 | jeffrey.yasskin | 2008-02-28 05:45:36 +0100 (Thu, 28 Feb 2008) | 7 lines
Move abc._Abstract into object by adding a new flag Py_TPFLAGS_IS_ABSTRACT,
which forbids constructing types that have it set. The effect is to speed
./python.exe -m timeit -s 'import abc' -s 'class Foo(object): __metaclass__ = abc.ABCMeta' 'Foo()'
up from 2.5us to 0.201us. This fixes issue 1762.
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r61099 | jeffrey.yasskin | 2008-02-28 06:53:18 +0100 (Thu, 28 Feb 2008) | 3 lines
Speed test_socketserver up from 28.739s to 0.226s, simplify the logic, and make
sure all tests run even if some fail.
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r61100 | jeffrey.yasskin | 2008-02-28 07:09:19 +0100 (Thu, 28 Feb 2008) | 21 lines
Thread.start() used sleep(0.000001) to make sure it didn't return before the
new thread had started. At least on my MacBook Pro, that wound up sleeping for
a full 10ms (probably 1 jiffy). By using an Event instead, we can be absolutely
certain that the thread has started, and return more quickly (217us).
Before:
$ ./python.exe -m timeit -s 'from threading import Thread' 't = Thread(); t.start(); t.join()'
100 loops, best of 3: 10.3 msec per loop
$ ./python.exe -m timeit -s 'from threading import Thread; t = Thread()' 't.isAlive()'
1000000 loops, best of 3: 0.47 usec per loop
After:
$ ./python.exe -m timeit -s 'from threading import Thread' 't = Thread(); t.start(); t.join()'
1000 loops, best of 3: 217 usec per loop
$ ./python.exe -m timeit -s 'from threading import Thread; t = Thread()' 't.isAlive()'
1000000 loops, best of 3: 0.86 usec per loop
To be fair, the 10ms isn't CPU time, and other threads including the spawned
one get to run during it. There are also some slightly more complicated ways to
get back the .4us in isAlive() if we want.
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r61101 | raymond.hettinger | 2008-02-28 10:23:48 +0100 (Thu, 28 Feb 2008) | 1 line
Add repeat keyword argument to itertools.product().
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r61102 | christian.heimes | 2008-02-28 12:18:49 +0100 (Thu, 28 Feb 2008) | 1 line
The empty tuple is usually a singleton with a much higher refcnt than 1
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60481,60485,60489-60492,60494-60496,60498-60499,60501-60503,60505-60506,60508-60509,60523-60524,60532,60543,60545,60547-60548,60552,60554,60556-60559,60561-60562,60569,60571-60572,60574,60576-60583,60585-60586,60589,60591,60594-60595,60597-60598,60600-60601,60606-60612,60615,60617,60619-60621,60623-60625,60627-60629,60631,60633,60635,60647,60650,60652,60654,60656,60658-60659,60664-60666,60668-60670,60672,60676,60678,60680-60683,60685-60686,60688,60690,60692-60694,60697-60700,60705-60706,60708,60711,60714,60720,60724-60730,60732,60736,60742,60744,60746,60748,60750-60766,60769-60786 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
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r60752 | mark.dickinson | 2008-02-12 22:31:59 +0100 (Tue, 12 Feb 2008) | 5 lines
Implementation of Fraction.limit_denominator.
Remove Fraction.to_continued_fraction and
Fraction.from_continued_fraction
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r60754 | mark.dickinson | 2008-02-12 22:40:53 +0100 (Tue, 12 Feb 2008) | 3 lines
Revert change in r60712: turn alternate constructors back into
classmethods instead of staticmethods.
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r60755 | mark.dickinson | 2008-02-12 22:46:54 +0100 (Tue, 12 Feb 2008) | 4 lines
Replace R=fractions.Fraction with F=fractions.Fraction in
test_fractions.py. This should have been part of the name
change from Rational to Fraction.
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r60758 | georg.brandl | 2008-02-13 08:20:22 +0100 (Wed, 13 Feb 2008) | 3 lines
#2063: correct order of utime and stime in os.times()
result on Windows.
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r60762 | jeffrey.yasskin | 2008-02-13 18:58:04 +0100 (Wed, 13 Feb 2008) | 7 lines
Working on issue #1762: Brought
./python.exe -m timeit -s 'from fractions import Fraction; f = Fraction(3, 2)' 'isinstance(3, Fraction); isinstance(f, Fraction)'
from 12.3 usec/loop to 3.44 usec/loop and
./python.exe -m timeit -s 'from fractions import Fraction' 'Fraction(3, 2)'
from 48.8 usec to 23.6 usec by avoiding genexps and sets in __instancecheck__
and inlining the common case from __subclasscheck__.
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r60765 | brett.cannon | 2008-02-13 20:15:44 +0100 (Wed, 13 Feb 2008) | 5 lines
Fix --enable-universalsdk and its comment line so that zsh's flag completion
works.
Thanks to Jeroen Ruigrok van der Werven for the fix.
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r60771 | kurt.kaiser | 2008-02-14 01:08:55 +0100 (Thu, 14 Feb 2008) | 2 lines
Bring NEWS.txt up to date from check-in msgs.
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r60772 | raymond.hettinger | 2008-02-14 02:08:02 +0100 (Thu, 14 Feb 2008) | 3 lines
Update notes on Decimal.
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r60773 | raymond.hettinger | 2008-02-14 03:41:22 +0100 (Thu, 14 Feb 2008) | 1 line
Fix decimal repr which should have used single quotes like other reprs.
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r60785 | jeffrey.yasskin | 2008-02-14 07:12:24 +0100 (Thu, 14 Feb 2008) | 11 lines
Performance optimizations on Fraction's constructor.
./python.exe -m timeit -s 'from fractions import Fraction' 'Fraction(3)`
31.7 usec/loop -> 9.2 usec/loop
./python.exe -m timeit -s 'from fractions import Fraction' 'Fraction(3, 2)'`
27.7 usec/loop -> 9.32 usec/loop
./python.exe -m timeit -s 'from fractions import Fraction; f = Fraction(3, 2)' 'Fraction(f)'
31.9 usec/loop -> 14.3 usec/loop
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r60786 | jeffrey.yasskin | 2008-02-14 08:49:25 +0100 (Thu, 14 Feb 2008) | 5 lines
Change simple instances (in Fraction) of self.numerator and self.denominator to
self._numerator and self._denominator. This speeds abs() up from 12.2us to
10.8us and trunc() from 2.07us to 1.11us. This doesn't change _add and friends
because they're more complicated.
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This makes it possible to use ABCs in weakref.py
(which will be done in a later checkin).
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Guido said:
Please roll this back. The error message you added is inappropriate
when the parameter to a legitimate register() call is omitted, e.g.
collections.Sequence.register()
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Warning required when calling register() on an ABCMeta subclass.
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instead of going straight to object.__new__().
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to simplify legitimate use of these.
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methods. Reset the negative cache *before* resetting the invalidation
counter, hoping this may plug a race condition (but then again, this
whole module isn't coded to be thread-safe).
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(The previous changes to abc.py were also by him).
Put back a comment about using super() for properties
(I didn't realize this worked).
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it when I thought something was broken, and forgotten to restore it
before checking in (maybe I did a svn revert which had the wrong effect?).
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