DEADLINE Monday February 4
OSCON (O'Reilly Open Source Convention), the premier Open Source
gathering, will be held in Portland, OR July 22-26. We're looking for
people to deliver tutorials and shorter presentations.
http://www.oscon.com/oscon2013
http://www.oscon.com/oscon2013/public/cfp/251
Vito De Tullio wrote:
Chris Rebert wrote:
How can I add a key in a thread-safe manner?
I'm not entirely sure, but have you investigated dict.setdefault() ?
but how setdefault makes sense in this context? It's used to set a default
value when you try to retrieve an element from the dict,
Τη Παρασκευή, 18 Ιανουαρίου 2013 11:34:05 μ.μ. UTC+2, ο χρήστης Chris Angelico
έγραψε:
On Sat, Jan 19, 2013 at 5:58 AM, Ferrous Cranus nikos.gr...@gmail.com wrote:
Τη Παρασκευή, 18 Ιανουαρίου 2013 3:28:10 μ.μ. UTC+2, ο χρήστης Joel
Goldstick έγραψε:
DocumentRoot =
Peter Otten wrote:
How can I add a key in a thread-safe manner?
I'm not entirely sure, but have you investigated dict.setdefault() ?
but how setdefault makes sense in this context? It's used to set a
default value when you try to retrieve an element from the dict, not when
you try to set a
On 01/19/2013 02:35 AM, Mitya Sirenef wrote:
On 01/19/2013 02:27 AM, Vito De Tullio wrote:
Chris Rebert wrote:
How can I add a key in a thread-safe manner?
I'm not entirely sure, but have you investigated dict.setdefault() ?
but how setdefault makes sense in this context? It's used to set a
Peter Otten wrote:
uhhmm.. I think I misread the example
d = {}
d.setdefault(1, 2)
2
d
{1: 2}
d.setdefault(1, 3)
2
d
{1: 2}
yeah, sure it can be useful for the OP...
--
ZeD
--
http://mail.python.org/mailman/listinfo/python-list
On Sat, Jan 19, 2013 at 7:16 PM, Vito De Tullio vito.detul...@gmail.com wrote:
yeah, sure, but with a fixed value :)
I mean: if the value is not important, why bother at all trying not to
override it with an if or a lock or other tecniques? doing
d['key'] = 'fixed_value'
multiple times
Τη Σάββατο, 19 Ιανουαρίου 2013 12:09:28 π.μ. UTC+2, ο χρήστης Dave Angel έγραψε:
I don't understand the problem. A trivial Python script could scan
through all the files in the directory, checking which ones are missing
the identifier, and rewriting the file with the identifier added.
On 01/18/2013 07:06 AM, Peter Otten wrote:
Jean-Michel Pichavant wrote:
That brings me to another question, is there any valid test case where
key1 != key2 and hash(key1) == hash(key2) ? Or is it some kind of design
flaw ?
I don't think there is a use case for such a behaviour other than
Dave Angel wrote:
On 01/18/2013 07:06 AM, Peter Otten wrote:
Jean-Michel Pichavant wrote:
That brings me to another question, is there any valid test case where
key1 != key2 and hash(key1) == hash(key2) ? Or is it some kind of design
flaw ?
I don't think there is a use case for such a
On 01/19/2013 03:39 AM, Ferrous Cranus wrote:
Τη Σάββατο, 19 Ιανουαρίου 2013 12:09:28 π.μ. UTC+2, ο χρήστης Dave Angel έγραψε:
I don't understand the problem. A trivial Python script could scan
through all the files in the directory, checking which ones are missing
the identifier, and
In article mailman.488.1358146579.2939.python-l...@python.org,
Mitya Sirenef msire...@lightbird.net wrote:
On 01/14/2013 01:34 AM, Franck Ditter wrote:
In article mailman.469.1358088303.2939.python-l...@python.org,
Jason Friedman ja...@powerpull.net wrote:
That is right; I would also
On 19/01/13 21:13, Santosh Kumar wrote:
I have a working script which takes argv[1] as an input, deassembles
each line, and then each word. Then after it capitalizes all its word
(upcases the first letter) and then prints it out on the stdout.
That script does the capitalization work fine, but,
On Fri, 18 Jan 2013 20:15:26 -0800, Chris Rebert wrote:
On Friday, January 18, 2013, Steven D'Aprano wrote:
I wish to add a key to a dict only if it doesn't already exist, but do
it in a thread-safe manner.
[...]
I'm not entirely sure, but have you investigated dict.setdefault() ?
Great!
On 1/19/2013 12:05 AM, Chris Angelico wrote:
On Sat, Jan 19, 2013 at 3:50 PM, Cen Wang iwarob...@gmail.com wrote:
Hi, when I use multiprocessing.Process in this way:
from multiprocessing import Process
class MyProcess(Process):
def __init__(self):
Process.__init__(self)
Who thought that not setting the “Reply replies to the ML” option was
a good idea?
-- Forwarded message --
From: Rik rik.j.cr...@gmail.com
Date: Fri, Jan 18, 2013 at 8:31 PM
Subject: Re: Beginner Tutorials
To: kwpol...@gmail.com
On Friday, January 18, 2013 7:20:13 PM UTC,
On 19/01/13 00:43, Andrew Robinson wrote:
On 01/18/2013 08:47 AM, Stefan Behnel wrote:
Andrew Robinson, 18.01.2013 00:59:
I have a problem which may fit in a mysql database
Everything fits in a MySQL database - not a reason to use it, though.
Py2.5
and later ship with sqlite3 and if you go
On 16 Jan 2013, at 13:51, Ferrous Cranus nikos.gr...@gmail.com wrote:
When trying to open an html template within Python script i use a relative
path to say go one folder back and open index.html
f = open( '../' + page )
How to say the same thing in an absolute way by forcing Python to
In article 50fa1bf1$0$30003$c3e8da3$54964...@news.astraweb.com,
Steven D'Aprano steve+comp.lang.pyt...@pearwood.info wrote:
I wish to add a key to a dict only if it doesn't already exist, but do it
in a thread-safe manner.
The naive code is:
if key not in dict:
dict[key] = value
Terry Reedy wrote:
On 1/7/2013 1:26 PM, Elli Lola wrote:
$ ./python -m test -v test_urlwithfrag
== CPython 3.3.0 (default, Jan 4 2013, 23:08:00) [GCC 4.6.3]
== Linux-3.2.0-35-generic-pae-i686-with-debian-wheezy-sid little-endian
==
Hi,
triggered by some problems I had with PySide I got a bit
confused about what the GC may do in certain situations.
Here's a small test program I cobbled together:
import sys
class X( object ) :
def __init__( self, parent, cnt ) :
print( In constructor for {0} {1}.format( self,
On Sat, 19 Jan 2013 14:47:16 +, Jens Thoms Toerring wrote:
Ok, the destrucor for the first instance of the X class is called only
after printing out After, so the GC didn't delete the object before.
But then there are obviously no calls of the destructors of neither the
second instance of
On Sat, 19 Jan 2013 16:24:37 +, Steven D'Aprano wrote:
On Sat, 19 Jan 2013 14:47:16 +, Jens Thoms Toerring wrote:
Ok, the destrucor for the first instance of the X class is called only
after printing out After, so the GC didn't delete the object before.
But then there are obviously
On 1/19/2013 9:47 AM, Jens Thoms Toerring wrote:
The code comments mostly answer your questions about what happens or
does not happen and when. The comments after add more detail.
import sys
class X( object ) :
def __init__( self, parent, cnt ) :
print( In constructor for {0}
And further thoughts...
On Sat, 19 Jan 2013 14:47:16 +, Jens Thoms Toerring wrote:
Hi,
triggered by some problems I had with PySide I got a bit
confused about what the GC may do in certain situations. Here's a small
test program I cobbled together:
import sys
class X( object )
On 01/18/13 23:19, Dennis Lee Bieber wrote:
On Fri, 18 Jan 2013 18:54:32 -0400, Zero Piraeus sche...@gmail.com
On 18 January 2013 16:57, Tim Chase python.l...@tim.thechases.com wrote:
- there are just some serious what-the-heck's in MySQL's handling of some
edge cases regarding NULL values
Dear Group,
As I know Python Foundation organizes some conferences all through the year.
Most probably they are known as Pycon. But I have some different question. The
question is, is it possible to attend it by Video Conferencing? Or if I request
for the same will it be granted?
Regards,
On 01/19/2013 04:32 AM, Franck Ditter wrote:
In article mailman.488.1358146579.2939.python-l...@python.org,
Mitya Sirenef msire...@lightbird.net wrote:
On 01/14/2013 01:34 AM, Franck Ditter wrote:
In article mailman.469.1358088303.2939.python-l...@python.org,
Jason Friedman
On 01/19/2013 05:13 AM, Santosh Kumar wrote:
I have a working script which takes argv[1] as an input, deassembles
each line, and then each word. Then after it capitalizes all its word
(upcases the first letter) and then prints it out on the stdout.
That script does the capitalization work fine,
Ferrous Cranus nikos.gr...@gmail.com writes:
This is addon domain's counter.py snippet tried to load an image mail.png and
failed because it cant see past its document root
# render html template and print it
data = f.read()
counter =
In article 1506a9c3-7abb-4360-91f1-f65631104...@googlegroups.com,
subhabangal...@gmail.com wrote:
As I know Python Foundation organizes some conferences all through the year.
Most probably they are known as Pycon. But I have some different question.
The question is, is it possible to attend
On Sun, Jan 20, 2013 at 4:46 AM, Tim Chase
python.l...@tim.thechases.com wrote:
Reading the MySQL gotchas and comparing it to the PostgreSQL gotchas, the
MySQL ones scare the pants off my inner DBA, while the PostgreSQL ones are
mostly if you're running at 6+yr old version of the software,
On 20/01/13 08:22, Dennis Lee Bieber wrote:
On Sat, 19 Jan 2013 22:58:17 +1100, Lie Ryan lie.1...@gmail.com
Which is the same restriction as when using XML/JSON. What it means by
locking the entire database is that an sqlite database can only be
read/written by a single program at any moment
On Jan 16, 11:51 pm, Ferrous Cranus nikos.gr...@gmail.com wrote:
When trying to open an html template within Python script i use a relative
path to say go one folder back and open index.html
f = open( '../' + page )
How to say the same thing in an absolute way by forcing Python to detect
On Sat, 19 Jan 2013 00:12:25 -0500, Dennis Lee Bieber wrote:
On Sat, 19 Jan 2013 07:24:40 +1100, Ben Finney
ben+pyt...@benfinney.id.au declaimed the following in
gmane.comp.python.general:
* MySQL's development has suffered under Sun, and become virtually
moribund under Oracle. They
I've been playing around with ChainedMap in Python 3.3, and run into
something which perplexes me. Let's start with an ordinary function that
accesses one global and one builtin.
x = 42
def f():
print(x)
If you call f(), it works as expected. But let's make a version with no
access to
On Wednesday, 16 January 2013 15:23:55 UTC+5:30, Terry Reedy wrote:
On 1/16/2013 12:59 AM, Rick Johnson wrote:
Python needs to trim the path to the source file from which the
exception was caught and only display the relative path starting from
your personal library folder.
On Sat, 19 Jan 2013 19:15:55 -0800, Ramchandra Apte wrote:
[snip dozens of irrelevant quoted lines]
Right-click the file in the traceback and there is an Go to file/line
option.
Please trim your replies so that the reader doesn't have to scroll
through page after page of irrelevant text
Eric Snow added the comment:
@Benjamin: Yeah, I've fixed that.
@Ezio: Good point. I've touched that up.
Once I have cleared up reference counting issues I'll put up a new patch.
--
___
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Alexey Kachayev added the comment:
It's hard to evaluate how popular given recipes, but:
* drop is opposite to take, so it's as popular as take
* the same situation with splitat, splitby - it's one case of partition that's
hard to write each time with enumerator (partition is already in
Serhiy Storchaka added the comment:
One method of statistically optimising the computation is to remove n least
common elements from the set S.
May be you need not remove least common elements from the set, but *get* a set
of (len(S)-n) most common elements?
Does it make any sense to you?
Roundup Robot added the comment:
New changeset 974ace29ee2d by Serhiy Storchaka in branch '3.2':
Issue #15989: Fix several occurrences of integer overflow
http://hg.python.org/cpython/rev/974ace29ee2d
New changeset 8f10c9eae183 by Serhiy Storchaka in branch '3.3':
Issue #15989: Fix several
Roundup Robot added the comment:
New changeset d544873d62e9 by Serhiy Storchaka in branch '2.7':
Issue #15989: Fix several occurrences of integer overflow
http://hg.python.org/cpython/rev/d544873d62e9
--
___
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Roundup Robot added the comment:
New changeset 1d33c79d2f6b by Charles-François Natali in branch '2.7':
Issue #16953: Fix socket module compilation on platforms with HAVE_BROKEN_POLL.
http://hg.python.org/cpython/rev/1d33c79d2f6b
New changeset 101e821e5e70 by Charles-François Natali in branch
Changes by Charles-François Natali cf.nat...@gmail.com:
--
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___
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http://bugs.python.org/issue16945
___
___
Charles-François Natali added the comment:
Committed, thanks for the patch!
--
stage: - committed/rejected
status: open - closed
versions: +Python 2.7, Python 3.2, Python 3.4
___
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Stefan Krah added the comment:
The buildbot coverage is good, but the number of (OS, shell, compiler)
combinations is much higher.
--
___
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http://bugs.python.org/issue11729
___
Ezio Melotti added the comment:
The two TODOs left are:
1) adding UnittestWarning;
2) improving the error message for deprecations;
Technically these are new features, so they can go in 3.4 only, but 2) might be
simple enough to be backported.
Regarding 1) it might be a bit too late, given
Stefan Krah added the comment:
Several 2.7 buildbots are failing.
Unfortunately I have only platforms where sizeof(int) == sizeof(long) ==
sizeof(size_t).
You can use your cpython ssh key to login to all snakebite buildbot
machines. They are tagged with [SB].
Ramchandra Apte added the comment:
Somehow the patch is not showing for me.
--
nosy: +ramchandra.apte
___
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http://bugs.python.org/issue16993
___
Nick Coghlan added the comment:
I think we're going to have to separate out two counts in the metrics - the
total number of tests (the current counts), and the total number of subtests
(the executed subtest blocks). (Other parameterisation solutions can then
choose whether to treat each pair
Changes by Eli Bendersky eli...@gmail.com:
--
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___
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Serhiy Storchaka added the comment:
Oh, sorry. Here is a patch.
--
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Added file: http://bugs.python.org/file28781/shutil_which_normcase.patch
___
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http://bugs.python.org/issue16993
Eugene Toder added the comment:
If you add co_firstlineno into code_hash you can say something like
/* The rest isn't used in hash and comparisons, except
co_name and co_firstlineno, which are preserved for
tracebacks and debuggers. */
(Otherwise you'd need to explain why co_firstlineno
Roundup Robot added the comment:
New changeset a78ebf9aed06 by Serhiy Storchaka in branch '2.7':
Ensure that width and precision in string formatting test have type int, not
long.
http://hg.python.org/cpython/rev/a78ebf9aed06
--
___
Python tracker
New submission from Jens Lechtenboerger:
Maybe I'm misreading the documentation of multiprocessing.Value and
multiprocessing.sharedctypes.Value.
I thought that access to the value field of Value instances was protected by
locks to avoid lost updates.
Specifically, for
Serhiy Storchaka added the comment:
Thank you for point, Stefan. And thanks Trent for his project.
--
___
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http://bugs.python.org/issue15989
___
Antoine Pitrou added the comment:
The way expectedFailure is currently implemented (it's a decorator which knows
nothing about test cases and test results, it only expects an exception to be
raised by its callee), it's gonna be difficult to make it participate with
subtests without breaking
Changes by Brett Cannon br...@python.org:
--
nosy: +brett.cannon
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http://bugs.python.org/issue16997
___
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Brett Cannon added the comment:
I wouldn't backport; not worth it.
Anyway, since I consider this bug closed I'm taking myself off the nosy list.
--
___
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http://bugs.python.org/issue10535
Antoine Pitrou added the comment:
I think we're going to have to separate out two counts in the metrics
- the total number of tests (the current counts), and the total number
of subtests (the executed subtest blocks).
This is a reasonable proposal. On the other hand, it was already the
case
Guido van Rossum added the comment:
This works well enough (tested in old version of Tulip), right? What's holding
it up?
--
nosy: +gvanrossum
___
Python tracker rep...@bugs.python.org
http://bugs.python.org/issue16507
Antoine Pitrou added the comment:
New patch attached:
- makes _SubTest a TestCase subclass
- clarifies test skipping for subtests (skipTest() only skips the subtest)
- makes expected failures work as expected by resorting to a thread-local
storage hack
--
Added file:
Antoine Pitrou added the comment:
New patch attached:
- makes _SubTest a TestCase subclass
- clarifies test skipping for subtests (skipTest() only skips the subtest)
- makes expected failures work as expected by resorting to a thread-local
storage hack
--
Added file:
Antoine Pitrou added the comment:
New patch attached:
- makes _SubTest a TestCase subclass
- clarifies test skipping for subtests (skipTest() only skips the subtest)
- makes expected failures work as expected by resorting to a thread-local
storage hack
--
Added file:
Benjamin Peterson added the comment:
If you could apply this to 2.7, that'd be great.
--
___
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http://bugs.python.org/issue14340
___
Changes by Antoine Pitrou pit...@free.fr:
--
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Sven Brauch added the comment:
Here's the next version which I hope to be somewhat complete now.
vararg and kwarg are now of type arg, and I did all the changes which are
required to make this possible. The ast tests pass.
Do you prefer to have this as one large patch all together, or would
Benjamin Peterson added the comment:
Individual patches would be great.
--
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http://bugs.python.org/issue16795
___
___
Sven Brauch added the comment:
Alright, I'll be back with those shortly (as soon as I found out how to do this
best with hg -- I'm used to git ;). I'll also sign the contributor agreement,
that's no problem of course.
--
___
Python tracker
Roundup Robot added the comment:
New changeset ee93a89b4e0f by Serhiy Storchaka in branch '2.7':
Issue #15989: Fix possible integer overflow in str formatting as in unicode
formatting.
http://hg.python.org/cpython/rev/ee93a89b4e0f
--
___
Python
Changes by florian-rathgeber florian.rathge...@gmail.com:
--
nosy: -florian-rathgeber
___
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http://bugs.python.org/issue16997
___
___
Nadeem Vawda added the comment:
I've reviewed the patch and posted some comments on Rietveld.
I doubt about backward compatibility. It's obvious that struct.error and
TypeError are unintentional, and EOFError is purposed for this case. However
users can catch undocumented but de facto
Sven Brauch added the comment:
Okay, here they are. I'm not sure how to make hg include a commit message in
the patch...
81299-extend-asdl.diff: Changes required to the ASDL framework, in order to
allow attributes ( ... ) on a product
81300-change-var-kwargs.diff: Makes var/kwarg be instances
Sven Brauch added the comment:
second patch file
--
Added file: http://bugs.python.org/file28788/81300-change-var-kwargs.diff
___
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http://bugs.python.org/issue16795
___
Sven Brauch added the comment:
third patch file
(... is there a better way to upload three files?)
--
Added file: http://bugs.python.org/file28789/81301-change-attr-ranges.diff
___
Python tracker rep...@bugs.python.org
Richard Oudkerk added the comment:
I thought that access to the value field of Value instances was
protected by locks to avoid lost updates.
Loads and stores are both atomic. But += is made up of two operations, a
load followed by a store, and the lock is dropped between the two.
The same
R. David Murray added the comment:
Christian, do you want to try to complete this before the 2.7.4 RC?
--
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http://bugs.python.org/issue16042
___
Nadeem Vawda added the comment:
What if unconsumed_tail is not empty but less than needed to decompress at
least one byte? We need read more data until unconsumed_tail grow enought to
be decompressed.
This is possible in zlib, but not in bz2. According to the manual [1], it is
perfectly OK
Ezio Melotti added the comment:
Agreed, closing.
--
resolution: - fixed
stage: patch review -
status: open - closed
versions: +Python 3.2 -Python 3.4
___
Python tracker rep...@bugs.python.org
http://bugs.python.org/issue10535
New submission from Antoine Pitrou:
There's a lot of obsolete or simply pointless cruft in the unittest docs,
including references to the runTest method, or a detailed description of how to
manually collect test suites. Following patch simplifies things a lot and makes
the doc easier to read.
New submission from Antoine Pitrou:
There's a lot of obsolete or simply pointless cruft in the unittest docs,
including references to the runTest method, or a detailed description of how to
manually collect test suites. Following patch simplifies things a lot and makes
the doc easier to read.
New submission from Ramchandra Apte:
This would reduce the complexity of uuid.UUID and also if the way it compares
changes, one would't have to change all the compare methods.
Attached is a patch.
--
components: Library (Lib)
files: issue.patch
keywords: patch
messages: 180275
nosy:
Changes by Ramchandra Apte maniandra...@gmail.com:
--
type: - enhancement
___
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http://bugs.python.org/issue17001
___
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Ramchandra Apte added the comment:
Attached is a patch. Note that this is my first Doc patch; please apologize
errors.
--
keywords: +patch
nosy: +ramchandra.apte
Added file: http://bugs.python.org/file28793/issue16557.patch
___
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Brian Curtin added the comment:
Can you provide test cases for this code?
--
nosy: +brian.curtin
___
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http://bugs.python.org/issue17001
___
Ramchandra Apte added the comment:
Yes, will do so.
--
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Changes by Brian Curtin br...@python.org:
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Ramchandra Apte added the comment:
@Brian Curtin
It appears that there are tests for UUID ordering. [0]
I will run the tests.
[0] http://hg.python.org/cpython/file/d1e6a48dfb0d/Lib/test/test_uuid.py#l188
--
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Ramchandra Apte added the comment:
Damn, I forgot to add import functools.
Here is a fixed version that passes test_uuid.
--
Added file: http://bugs.python.org/file28794/issue-v2.patch
___
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Ramchandra Apte added the comment:
Buump.
--
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