On Fri, Apr 30, 2010 at 5:08 PM, Benjamin Peterson benja...@python.org wrote:
2010/4/30 Antoine Pitrou solip...@pitrou.net:
Jesse Noller jnoller at gmail.com writes:
Consider this a plaintitive -1 to any sort of rule-or-decision based
on committee.
I'd much rather a 2x4 to the forehead.
On Sat, Apr 17, 2010 at 11:38 AM, Dino Viehland di...@microsoft.com wrote:
Benjamin wrote:
2010/4/17 Guido van Rossum gu...@python.org:
On Sat, Apr 17, 2010 at 9:22 AM, Nick Coghlan ncogh...@gmail.com
wrote:
Guido van Rossum wrote:
Because Python promises that the object the callee sees
On Sat, Apr 17, 2010 at 12:03 PM, Dino Viehland di...@microsoft.com wrote:
Maciej wrote:
On Sat, Apr 17, 2010 at 11:38 AM, Dino Viehland di...@microsoft.com
wrote:
Benjamin wrote:
2010/4/17 Guido van Rossum gu...@python.org:
On Sat, Apr 17, 2010 at 9:22 AM, Nick Coghlan
On Sat, Apr 17, 2010 at 1:03 PM, Steve Holden st...@holdenweb.com wrote:
Dino Viehland wrote:
Maciej wrote:
[...]
And yet that breaks some code :-)
Sure, if you do:
class C(object):
locals()[object()] = 42
dir(C)
You lose. Once I'm aware of some piece of code in the wild doing
On Fri, Apr 16, 2010 at 3:11 PM, Raymond Hettinger
raymond.hettin...@gmail.com wrote:
Guido van Rossum, 16.04.2010 16:33:
I am fine with
declaring dict({}, **{1:3}) illegal, since after all it is abuse of
the ** mechanism.
ISTM that making it illegal costs cycles with giving any real
On Mon, Apr 5, 2010 at 9:31 AM, Craig Citro craigci...@gmail.com wrote:
for a college project, I proposed to create a compiler for python. I've
read something about it and maybe I saw that made a bad choice. I hear
everyone's opinion respond.
I don't think everyone thinks this is a bad idea
On Mon, Apr 5, 2010 at 1:47 PM, Craig Citro craigci...@gmail.com wrote:
There has been some contentious debate about this in the past, where a
Cython developer(s?) insisted Cython be listed among the Python
implementations somewhere, on a par with IronPython, Jython and PyPy.
This does not
On Mon, Apr 5, 2010 at 2:21 PM, Michael Foord fuzzy...@voidspace.org.uk wrote:
On 05/04/2010 21:10, Terry Reedy wrote:
On 4/5/2010 10:54 AM, will...@ufpa.br wrote:
for a college project, I proposed to create a compiler for python. I've
read something about it and maybe I saw that made a bad
On Mon, Apr 5, 2010 at 3:03 PM, Martin v. Löwis mar...@v.loewis.de wrote:
Is the requirement just the construction of full tracebacks in the
event of an exception? Because Cython does that right now. In the
event of an exception, the Python call frames are constructed as the C
call stack is
-1 = -1
implies log(-1) = log(-1)
Mathematically speaking this is incorrect.
x = y
implies
log(x) = log(y)
for x 0 and y 0
Cheers,
fijal
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On Mon, Mar 8, 2010 at 10:47 AM, Guido van Rossum gu...@python.org wrote:
Actually it sounds like there's some overly general except clause
somewhere that should be adjusted to catch just Exception instead of
*.
There is at least one that prints import 'site' failed and continues
to run your
On Wed, Feb 24, 2010 at 6:35 AM, Nick Coghlan ncogh...@gmail.com wrote:
Tarek Ziadé wrote:
That makes me wonder : why don't we have a sys.implementation variable ?
(cython/jython/pypi), since we can have several values for cython in
sys.platform
Hello.
So I propose to have a
On Wed, Feb 24, 2010 at 12:12 PM, Dave Fugate dfug...@microsoft.com wrote:
Would there be any interest in accepting IronPython's in-house benchmarks
into this repository as well? Internally we run the usual suspects (PyStone,
PyBench, etc), but we also have a plethora of custom benchmarks
On Wed, Feb 24, 2010 at 11:17 AM, Glyph Lefkowitz
gl...@twistedmatrix.com wrote:
On Feb 23, 2010, at 2:10 PM, Tarek Ziadé wrote:
On Tue, Feb 23, 2010 at 1:50 PM, Maciej Fijalkowski fij...@gmail.com wrote:
Hello.
I would like to have a feature on platform module (or sys or
somewhere
Hello.
I would like to have a feature on platform module (or sys or
somewhere) that can tell distutils or distutils2 that this platform
(be it PyPy or Jython) is not able to compile any C module. The
purpose of this is to make distutils bail out in more reasonable
manner than a compilation error
On Tue, Feb 23, 2010 at 2:27 PM, Tarek Ziadé ziade.ta...@gmail.com wrote:
On Tue, Feb 23, 2010 at 2:10 PM, Tarek Ziadé ziade.ta...@gmail.com wrote:
On Tue, Feb 23, 2010 at 1:50 PM, Maciej Fijalkowski fij...@gmail.com wrote:
Hello.
I would like to have a feature on platform module (or sys
Hello.
We probably also need some people, besides CPython devs having some
access to it (like me).
Cheers,
fijal
On Sun, Feb 21, 2010 at 4:51 PM, Daniel Stutzbach
dan...@stutzbachenterprises.com wrote:
On Sun, Feb 21, 2010 at 2:28 PM, Collin Winter collinwin...@google.com
wrote:
Would it be
Snippet from:
http://codereview.appspot.com/186247/diff2/5014:8003/7002
*PyPy*: PyPy [#pypy]_ has good performance on numerical code, but is
slower than Unladen Swallow on non-numerical workloads. PyPy only
supports 32-bit x86 code generation. It has poor support for CPython
extension modules,
On Thu, Jan 28, 2010 at 2:33 PM, Benjamin Schweizer
we...@benjamin-schweizer.de wrote:
Hello,
I've updated the traceback.py module; my improved version dumps all
local variabes from the stack trace, which helps in debugging rare
problems. You can find details in my latest blog post here:
FWIW, deque indexing for small deques is already O(1)
and somewhat fast. You only get O(n) degradation
(with a small contant factor) on large deques.
Hi.
For small dequeues (smaller than a constant), you have to have O(1)
operations, by definition :-)
Cheers,
fijal
Ah, yes. In my particular case, I'm running a cluster of hundreds of nodes,
supporting 50.000 players in a real-time space simulation. We disable GC
because of its unpredictable performance impact and are careful to avoid
reference cycles. We use gc from time to time to _find_ those
On Tue, Oct 20, 2009 at 3:00 PM, Paul Moore p.f.mo...@gmail.com wrote:
2009/10/20 Stefan Krah stefan-use...@bytereef.org:
Hi,
as some of you know, recently I've released an arbitrary precision
C library for decimal arithmetic together with a Python module:
On Sun, Jun 21, 2009 at 5:05 PM, Daniel Dinizaja...@gmail.com wrote:
Hi David,
omega_force2...@yahoo.com wrote:
It appears that one possibility of investigation into the development of a
safety-critical variant of the python language
There is some interesting work related to a
On Wed, Apr 15, 2009 at 1:10 PM, Georg Brandl ge...@python.org wrote:
Hi,
I managed to screw up the date, so here it goes again:
I'd like to announce that there will be a Python Bug Day on April 25.
As always, this is a perfect opportunity to get involved in Python
development, or bring
So. The issue was closed and I suppose it was closed by not entirely
understanding
the problem (or I didn't get it completely).
The question is - what the following code should do?
def f():
a = 2
class C:
exec 'a = 42'
abc = a
return C
print f().abc
(quick answer - on python2.5
attributes. I actually think the
2.5 behavior is correct, and I don't know why it changed in 2.6.
--Guido
On Tue, Mar 31, 2009 at 8:15 PM, Maciej Fijalkowski fij...@gmail.com wrote:
So. The issue was closed and I suppose it was closed by not entirely
understanding
the problem (or I didn't get
Shame on me indeed.
On Wed, Apr 1, 2009 at 5:38 AM, Guido van Rossum gu...@python.org wrote:
OK that might change matters. Shame on you though for posting a patch
without any explanation of the issue.
On Tue, Mar 31, 2009 at 8:36 PM, Maciej Fijalkowski fij...@gmail.com wrote:
Because classes
While working on the core is admirable, I think gsoc would provide an
opportunity to port important Python libraries to 3.x. It's important
to remember that doing ports helps the core immensely by uncovering
2to3 and py3k bugs.
Hello.
It's a very noble task to have important python
That would be break so much code that I doubt that, in practice, you can
slip it through within a release. Besides, being able to write simpler
code like for L in open(foo.txt) is per-se a good reason *not to*
put file objects in cycles; so you will probably need more than one good
reason to
If we could calculate how much stack is left we'd have a much more
robust way of doing recursion limits. I suppose this could be done by
reading a byte from each page with a temporary SIGSEGV handler
installed, but I'm not convinced you can't ask the platform directly
somehow. I'd also be
When I try to run this, I get:
Fatal Python error: Py_Initialize: can't initialize sys standard streams
Traceback (most recent call last):
File /home/fijal/lang/python/Python30/Lib/encodings/__init__.py,
line 31, in module
File /home/fijal/lang/python/Python30/Lib/codecs.py, line 1060, in
Hello,
The thing is pypy's taint code is broken. Basically you don't only
need to patch all places that return pyobject, but also all places
that might modify anything. (All side effects) For example innocently
looking call to addition might end up calling arbitrary python code
(and have
...
We know it is the plan for PyPy to work in this way, and also that
Jython and Ironpython works like that (using the host vm's GC), so it
seems to be somehow agreeable with the python semantics (perhaps not
really with __del__ but they are not really nice anyway).
PyPy has a
PyPy offers sandboxing interpreter without compromising language
features itself. Here are docs:
http://codespeak.net/pypy/dist/pypy/doc/sandbox.html
Also, are you aware of directory Lib/test/crashers (in python's svn)
which contains some possible ways to segfault cpython? (which can lead
to
Hello,
I'm a little clueless about exact semantics of following snippets:
http://paste.pocoo.org/show/85698/
is this fine?
or shall I fill the bug?
(the reason to ask is because a) django is relying on this b) pypy
implements it differently)
cheers,
fijal
On Fri, Sep 19, 2008 at 9:30 PM, Jean-Paul Calderone [EMAIL PROTECTED] wrote:
On Fri, 19 Sep 2008 18:26:05 +0200, Amaury Forgeot d'Arc
[EMAIL PROTECTED] wrote:
Hello Maciej,
Maciej Fijalkowski wrote:
Hello,
I'm a little clueless about exact semantics of following snippets:
http
You can provide selfless class as a class with special metaclass that
overloads __new__ and changes signature of each method. Not sure how
good is this, but requires no changes to the language and will work as
you want.
Cheers,
fijal
On Wed, Aug 27, 2008 at 8:46 AM, Kilian Klimek
[EMAIL
On Thu, Jun 19, 2008 at 1:03 AM, Raymond Hettinger [EMAIL PROTECTED] wrote:
Maciej Fijalkowski did an opcode analysis for PyPy,
it also shows the relative frequency of opcodes following a
specifc one:
http://codespeak.net/svn/user/fijal/opcodes.txt
Might it make sense to add more PREDICT
On Thu, Jun 12, 2008 at 2:32 AM, Terry Reedy [EMAIL PROTECTED] wrote:
Scott Dial [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
|| If non-string keys are not allowed in __dict__, then the AddOns library
| should be changed to add another dict to the object of interest to track
|
What do you think about this code:
class A:
locals()[42] = 98
Seems people rely on it working. Do we consider it part of python
language? (Note that you cannot do the same with getattr/setattr which
checks if argument is a string)
Cheers,
fijal
___
On Wed, Jun 11, 2008 at 3:36 AM, Scott Dial
[EMAIL PROTECTED] wrote:
Maciej Fijalkowski wrote:
What do you think about this code:
class A:
locals()[42] = 98
Seems people rely on it working.
I apologize for my ignorance, but who? Could you please cite something
reputable that relies
On Thu, Jun 5, 2008 at 6:23 PM, Benjamin Peterson
[EMAIL PROTECTED] wrote:
Hi,
This summer, I am going to be revamping Python's test suite. Major
things I plan to do include
- rewriting regrtest.py to be a simple test driver
- implementing CPython only decorators
- moving skipping data to
Honestly, the argument that this code is already gone in 3.0 is not very
valid. 2.x version would be probably used for many years.
Cheers,
fijal
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IMHO this shouldn't segfault:
import thread
while 1:
f = open(/tmp/dupa, w)
thread.start_new_thread(f.close, ())
f.close()
while it does on cpython 2.5.1, linux box.
May I consider this a bug?
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I've got slight problem with os.tmpfile(). What I would like to do is to get
the filedesc of tmpfile.
First approach:
os.tmpfile().fileno() of course does not work out, because fileno() does not
keep object alive. The solution is to keep os.tmpfile() result somewhere for
an arbitrary amount of
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