Hi Terry,
On 06/01/12 10:25, Terry Reedy wrote:
On 1/5/2012 3:01 PM, Paul Smedley wrote:
File "./setup.py", line 1154, in detect_modules
for arg in sysconfig.get_config_var("__CONFIG_ARGS").split()]
AttributeError: 'NoneType' object has no attribute 'split'
make: *** [sharedmods] Error 1
Fi
06.01.12 02:10, Nick Coghlan написав(ла):
Not a good idea - a lot of the 3rd party tests that depend on dict
ordering are going to be using those modules anyway, so scattering our
solution across half the standard library is needlessly creating
additional work without really reducing the incompat
I'm pretty sure the Python version of RLock is in use in several
alternative implementations that provide an alternative _thread.lock. I
think gevent would fall into this camp, as well as a personal project of
mine in a similar vein that operates on python3.
2012/1/6 Charles-François Natali
> Hi
On 1/5/2012 5:52 PM, Steven D'Aprano wrote:
At some point, presuming that there is no speed penalty, the behaviour
will surely become not just enabled by default but mandatory. Python
has never promised that hashes must be predictable or consistent, so
apart from backwards compatibility conce
Benjamin Peterson wrote:
2012/1/5 Steven D'Aprano :
[...]
There's nothing obscure about directly testing the hash. That's about as far
from obscure as it is possible to get: you are directly testing the presence
of a feature by testing the feature.
It's obscure because hash('') != 0 doesn't n
On Fri, Jan 6, 2012 at 11:17 AM, Antoine Pitrou wrote:
>> >From what I understand, the biggest motivation for pure Python
>> versions is cooperation with the other Python implementations. See
>> http://www.python.org/dev/peps/pep-0399/
>
> Apologies, I didn't remember it was written down in PEP.
Am 06.01.2012 03:04, schrieb Benjamin Peterson:
> It's obscure because hash('') != 0 doesn't necessarily mean the hashes
> are randomized. A different hashing algorithm could be in effect.
Also in 1 of 2**32 or 2**64 tries hash('') is 0 although randomizing is
active.
Christian
__
2012/1/5 Steven D'Aprano :
> Benjamin Peterson wrote:
>>
>> 2012/1/5 Nick Coghlan :
>>>
>>> On Fri, Jan 6, 2012 at 10:07 AM, Steven D'Aprano
>>> wrote:
Surely the way to verify the behaviour is to run this from the shell:
python -c print(hash("abcde"))
twice, and see
Benjamin Peterson wrote:
2012/1/5 Nick Coghlan :
On Fri, Jan 6, 2012 at 10:07 AM, Steven D'Aprano wrote:
Surely the way to verify the behaviour is to run this from the shell:
python -c print(hash("abcde"))
twice, and see that the calls return different values. (Or have I
misunderstood the wa
On Fri, Jan 6, 2012 at 10:59 AM, Benjamin Peterson wrote:
> What exactly is the disadvantage of a sys attribute? That would seem
> preferable to an obscure incarnation like that.
Adding sys attributes in maintenance (or security) releases makes me nervous.
However, Victor and Christian are right
On Fri, 06 Jan 2012 01:50:00 +0100
Christian Heimes wrote:
> Am 06.01.2012 01:34, schrieb Nick Coghlan:
> > On Fri, Jan 6, 2012 at 10:07 AM, Steven D'Aprano
> > wrote:
> >> Surely the way to verify the behaviour is to run this from the shell:
> >>
> >> python -c print(hash("abcde"))
> >>
> >> tw
2012/1/5 Nick Coghlan :
> On Fri, Jan 6, 2012 at 10:07 AM, Steven D'Aprano wrote:
>> Surely the way to verify the behaviour is to run this from the shell:
>>
>> python -c print(hash("abcde"))
>>
>> twice, and see that the calls return different values. (Or have I
>> misunderstood the way the fix i
Am 06.01.2012 01:34, schrieb Nick Coghlan:
> On Fri, Jan 6, 2012 at 10:07 AM, Steven D'Aprano wrote:
>> Surely the way to verify the behaviour is to run this from the shell:
>>
>> python -c print(hash("abcde"))
>>
>> twice, and see that the calls return different values. (Or have I
>> misunderstoo
2012/1/6 Barry Warsaw :
>>Settings for PYRANDOMHASH:
>>
>> PYRANDOMHASH=1
>> enable randomized hashing function
>>
>> PYRANDOMHASH=/path/to/seed
>> enable randomized hashing function and read seed from 'seed'
>>
>> PYRANDOMHASH=0
>> disable randomed hashing function
>
> Why not PYTHONHASHSEED
On Fri, Jan 6, 2012 at 10:07 AM, Steven D'Aprano wrote:
> Surely the way to verify the behaviour is to run this from the shell:
>
> python -c print(hash("abcde"))
>
> twice, and see that the calls return different values. (Or have I
> misunderstood the way the fix is going to work?)
>
> In any cas
On Jan 05, 2012, at 10:40 PM, Christian Heimes wrote:
>Hey Barry, stop stealing my ideas! :) I've argued for these default
>settings for days.
:)
>I've suggested the env var PYRANDOMHASH. It's easy to set env vars in
>Apache. For example Debian/Ubuntu has /etc/apache2/envvars.
For consistency,
David Malcolm wrote:
When backporting the fix to ancient python versions, I'm inclined to
turn the change *off* by default, requiring the change to be enabled via
an environment variable: I want to avoid breaking existing code, even if
such code is technically relying on non-guaranteed behavior.
On 1/5/2012 3:10 PM, Ethan Furman wrote:
Tres Seaver wrote:
1) the security problem is not in CPython, but rather in web servers
that use dict inappropriately.
Most webapp vulnerabilities are due to their use of Python's cgi module,
which it uses a dict to hold the form / query string data b
On Fri, Jan 6, 2012 at 8:15 AM, Serhiy Storchaka wrote:
> 05.01.12 21:14, Glenn Linderman написав(ла):
>>
>> So, fixing the vulnerable packages could be a sufficient response,
>> rather than changing the hash function. How to fix? Each of those
>> above allocates and returns a dict. Simply have
On 1/5/2012 3:01 PM, Paul Smedley wrote:
File "./setup.py", line 1154, in detect_modules
for arg in sysconfig.get_config_var("__CONFIG_ARGS").split()]
AttributeError: 'NoneType' object has no attribute 'split'
make: *** [sharedmods] Error 1
File "./setup.py", line 1368, in detect_modules
if '
On Thu, 5 Jan 2012 15:02:42 -0700
Eric Snow wrote:
> 2012/1/5 Charles-François Natali :
> > Hi,
> >
> > Issue #13697 (http://bugs.python.org/issue13697) deals with a problem
> > with the Python version of threading.RLock (a signal handler which
> > tries to acquire the same RLock is called right
05.01.12 21:14, Glenn Linderman написав(ла):
So, fixing the vulnerable packages could be a sufficient response,
rather than changing the hash function. How to fix? Each of those
above allocates and returns a dict. Simply have each of those allocate
and return and wrapped dict, which has the fo
Am 05.01.2012 22:59, schrieb Antoine Pitrou:
> I don't think we (python-dev) are really concerned with 2.3, 2.4,
> 2.5 and 3.0. They're all unsupported, and people do what they want
> with their local source trees.
Let me reply with a quote from Barry:
> Correct, although there's no reason why a
2012/1/5 Charles-François Natali :
> Hi,
>
> Issue #13697 (http://bugs.python.org/issue13697) deals with a problem
> with the Python version of threading.RLock (a signal handler which
> tries to acquire the same RLock is called right at the wrong time)
> which doesn't affect the C version.
> Whethe
On Thu, 05 Jan 2012 22:40:58 +0100
Christian Heimes wrote:
> Am 05.01.2012 21:45, schrieb Barry Warsaw:
> > This sounds like a reasonable compromise for all stable Python releases. It
> > can be turned on by default for Python 3.3. If you also make the default
> > setting easy to change (i.e. pa
Am 05.01.2012 21:10, schrieb Ethan Furman:
> Tres Seaver wrote:
>> -BEGIN PGP SIGNED MESSAGE-
>> Hash: SHA1
>>
>> On 01/05/2012 02:14 PM, Glenn Linderman wrote:
>>> 1) the security problem is not in CPython, but rather in web servers
>>> that use dict inappropriately.
>>
>> Most webapp vuln
Hi,
Issue #13697 (http://bugs.python.org/issue13697) deals with a problem
with the Python version of threading.RLock (a signal handler which
tries to acquire the same RLock is called right at the wrong time)
which doesn't affect the C version.
Whether such a use case can be considered good practis
Am 05.01.2012 21:45, schrieb Barry Warsaw:
> This sounds like a reasonable compromise for all stable Python releases. It
> can be turned on by default for Python 3.3. If you also make the default
> setting easy to change (i.e. parameterized in one place), then distros can
> make their own decisio
On 01/05/2012 09:45 PM, Barry Warsaw wrote:
> On Jan 05, 2012, at 02:33 PM, David Malcolm wrote:
>
>>We have similar issues in RHEL, with the Python versions going much
>>further back (e.g. 2.3)
>>
>>When backporting the fix to ancient python versions, I'm inclined to
>>turn the change *off* by de
On Thu, 2012-01-05 at 20:35 +, Paul Moore wrote:
> On 5 January 2012 19:33, David Malcolm wrote:
> > We have similar issues in RHEL, with the Python versions going much
> > further back (e.g. 2.3)
> >
> > When backporting the fix to ancient python versions, I'm inclined to
> > turn the change
On Thu, Jan 05, 2012 at 08:35:57PM +, Paul Moore wrote:
> On 5 January 2012 19:33, David Malcolm wrote:
> > We have similar issues in RHEL, with the Python versions going much
> > further back (e.g. 2.3)
> >
> > When backporting the fix to ancient python versions, I'm inclined to
> > turn the
On Jan 05, 2012, at 08:35 PM, Paul Moore wrote:
>Uh, surely no-one is suggesting backporting to "ancient" versions? I
>couldn't find the statement quickly on the python.org website (so this
>is via google), but isn't it true that 2.6 is in security-only mode
>and 2.5 and earlier will never get the
On Jan 05, 2012, at 02:33 PM, David Malcolm wrote:
>We have similar issues in RHEL, with the Python versions going much
>further back (e.g. 2.3)
>
>When backporting the fix to ancient python versions, I'm inclined to
>turn the change *off* by default, requiring the change to be enabled via
>an env
On 5 January 2012 19:33, David Malcolm wrote:
> We have similar issues in RHEL, with the Python versions going much
> further back (e.g. 2.3)
>
> When backporting the fix to ancient python versions, I'm inclined to
> turn the change *off* by default, requiring the change to be enabled via
> an env
Tres Seaver wrote:
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
On 01/05/2012 02:14 PM, Glenn Linderman wrote:
1) the security problem is not in CPython, but rather in web servers
that use dict inappropriately.
Most webapp vulnerabilities are due to their use of Python's cgi module,
which it
On 1/5/2012 11:49 AM, Tres Seaver wrote:
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
On 01/05/2012 02:14 PM, Glenn Linderman wrote:
1) the security problem is not in CPython, but rather in web servers
that use dict inappropriately.
Most webapp vulnerabilities are due to their use of Python's
Hi Amaury,
On 06/01/12 00:32, Amaury Forgeot d'Arc wrote:
2012/1/5 Paul Smedley mailto:p...@smedley.id.au>>
Hi All,
I'm working on updating my port of Python 2.6.5 to v2.7.2 for the
OS/2 platform.
I have python.exe and python27.dll compiling find, but when starting
to buil
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
On 01/05/2012 02:14 PM, Glenn Linderman wrote:
> 1) the security problem is not in CPython, but rather in web servers
> that use dict inappropriately.
Most webapp vulnerabilities are due to their use of Python's cgi module,
which it uses a dict to ho
On Thu, 2012-01-05 at 19:34 +0200, Maciej Fijalkowski wrote:
> On Thu, Jan 5, 2012 at 3:39 PM, Antoine Pitrou wrote:
> > On Thu, 5 Jan 2012 15:26:27 +1100
> > Andrew Bennetts wrote:
> >>
> >> I don't think that's news either.
> >> http://mail.python.org/pipermail/python-dev/2003-May/035907.html a
On Thu, 5 Jan 2012 19:34:13 +0200
Maciej Fijalkowski wrote:
>
> Just to make things clear - stdlib itself has 1/64 of tests relying on
> dict order. Changing dict order in *older* pythons will break
> everyone's tests and some peoples code.
Breaking tests is not a problem: they are typically not
On 1/5/2012 9:34 AM, Maciej Fijalkowski wrote:
Also consider that new 2.6.x would go as a security fix to old
ubuntu, but all other packages won't, because they'll not contain
security fixes. Just so you know
Why should CPython by constrained by broken policies of Ubuntu? If the
other package
On Thu, Jan 5, 2012 at 3:39 PM, Antoine Pitrou wrote:
> On Thu, 5 Jan 2012 15:26:27 +1100
> Andrew Bennetts wrote:
>>
>> I don't think that's news either.
>> http://mail.python.org/pipermail/python-dev/2003-May/035907.html and
>> http://twistedmatrix.com/pipermail/twisted-python/2003-June/004339.
On Jan 05, 2012, at 01:46 PM, Mark Shannon wrote:
>2. Submit a bug report for each "failing" test separately?
I'm sure it will be a pain, but this is really the best thing to do.
-Barry
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2012/1/5 Paul Smedley
> Hi All,
>
> I'm working on updating my port of Python 2.6.5 to v2.7.2 for the OS/2
> platform.
>
> I have python.exe and python27.dll compiling find, but when starting to
> build sharedmods I'm getting the following error:
> running build
> running build_ext
> Traceback (m
On Thu, 05 Jan 2012 13:46:52 +
Mark Shannon wrote:
>
> Should I:
>
> 1. Submit one big bug report?
>
> 2. Submit a bug report for each "failing" test separately?
I would say a separate bug report for each failing test file, i.e. one
report for test_dis, one for test_email etc.
Hope this do
Hi,
Python code should not depend upon the ordering of items in a dict.
Unfortunately it seems that a number of tests in the standard library do
just that.
Changing PyDict_MINSIZE from 8 to either 4 or 16 causes the following
tests to fail:
test_dis test_email test_inspect test_nntplib tes
On Thu, 5 Jan 2012 15:26:27 +1100
Andrew Bennetts wrote:
>
> I don't think that's news either.
> http://mail.python.org/pipermail/python-dev/2003-May/035907.html and
> http://twistedmatrix.com/pipermail/twisted-python/2003-June/004339.html for
> instance show that in 2003 it was clearly known to
Hi All,
I'm working on updating my port of Python 2.6.5 to v2.7.2 for the OS/2
platform.
I have python.exe and python27.dll compiling find, but when starting to
build sharedmods I'm getting the following error:
running build
running build_ext
Traceback (most recent call last):
File "./setu
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