I have recently been playing with a kd-tree for solving the post
office problem in a 12-dimensional space. This is pure cpu bound
number crunching, a task for which I suspected Python to be
inefficient.
My prototype in Python 2.5 using NumPy required 0.41 seconds to
construct the tree from 50,000
On Sep 23, 3:13 am, process [EMAIL PROTECTED] wrote:
Why doesn't Python optimize tailcalls? Are there plans for it?
Because Python is a dynamic language. While a function is executing,
its name may be bound to another object. It may happen as a side
effect of what the function is doing, or even
On Sep 23, 3:44 pm, Robert Singer [EMAIL PROTECTED] wrote:
Well, python is not a number crunching language. However much we would
like it to be (we would ? :-).
No scripting language is.
Not even Matlab, R, IDL, Octave, SciLab, S-PLUS or Mathematica?
Before resorting to rewriting the
On Sep 23, 5:31 pm, [EMAIL PROTECTED] wrote:
Well written C++ code is generally faster or much faster than similar
Python code, but programming in Python is often simpler, and it
generally requires less time. So it may happen that to solve a problem
a Python program that runs in 1 hour that
On Sep 23, 4:48 pm, hrishy [EMAIL PROTECTED] wrote:
Will LINQ be ported to Python ?
No, because Python already has list comprehensions and we don't need
the XML buzzword.
--
http://mail.python.org/mailman/listinfo/python-list
On Sep 23, 8:52 pm, [EMAIL PROTECTED] wrote:
I think the Python version suffices. If it's not too much private you
may post the single minimal/reduced runnable Python module here, it
will be deleted in some time (if you want you can also use a private
paste):http://codepad.org/
On Sep 23, 9:17 pm, Robert Kern [EMAIL PROTECTED] wrote:
You could also drop it on the scipy.org wiki in the Cookbook category.
Yes, if I could figure out how to use it...
--
http://mail.python.org/mailman/listinfo/python-list
On Sep 23, 10:05 pm, Robert Singer [EMAIL PROTECTED] wrote:
May I ask what are your main objections to it ?
1. gfortran is not Absoft.
2. If I program the same in C99 and Fortran 95, and compile with gcc
and gfortran, the C99 code runs a lot faster (I've only tested with
wavelet transforms).
On Sep 23, 10:16 pm, Robert Kern [EMAIL PROTECTED] wrote:
What's confusing? You do have to create a profile:
How do I add a new page to the wiki? I'm only able to edit the front
page of the cookbook. But it doesn't help to add link there if I have
no page to link. (I may be incredibly stupid
On Sep 23, 8:52 pm, [EMAIL PROTECTED] wrote:
Is this a good or bad thing? ;-)
It seems we have been implementing different algorithms. kd-trees are
not BK-trees.
http://www.scipy.org/Cookbook/KDTree
--
http://mail.python.org/mailman/listinfo/python-list
(1) Would CPython be a good choice for this? How about iron python? How
about Jython (probably not).
You can use CPython without any problems. Alternatives are pywin32,
ctypes, cython, pyrex, Python C API.
You can use .NET platform invoke from IronPython.
You can use JNI from Jython, or any
On Sep 12, 8:33 pm, [EMAIL PROTECTED] (Al Dykes) wrote:
OK, what are my choices for an IDE/GUI development tool that runs on XP?
That depends on the GUI toolkit you are using. My suggestion:
CPython with wxPython: wxFormBuilder
Cpython with PyQt: BlackAdder
CPython with PyGTK: GLADE 3
On Sep 10, 6:39 am, Travis Oliphant [EMAIL PROTECTED] wrote:
I wanted to point anybody interested to a blog post that describes a
useful pattern for having a NumPy array that points to the memory
created by a different memory manager than the standard one used by
NumPy.
Here is something
On 3 Sep, 18:52, ToPostMustJoinGroup22 [EMAIL PROTECTED]
wrote:
I'm coming from a .NET, VB, C background.
Any suggestions for someone new to the scene like me?
Welcome! Unfortunately, you probably have a lot of bad habits to
unlearn. Don't use Python like another C, VB or Java. It will cause
On 7 Sep, 00:06, cnb [EMAIL PROTECTED] wrote:
If I buy a multicore computer and I have really intensive program. How
would that be distributed across the cores?
Distribution of processes and threads across processors (cores or
CPUs) is managed by the operating system.
Will algorithms always
On 7 Sep, 06:24, sturlamolden [EMAIL PROTECTED] wrote:
- Psyco, a Python JIT compiler, will often speed up algorithmic code.
Using psyco require to change to your code.
Typo. It should say Using psyco does not require you to change your
code.
--
http://mail.python.org/mailman/listinfo/python
Alex wrote:
I wonder if it is possible in python to produce random numbers
according to a user defined distribution?
Unfortunately the random module does not contain the distribution I
need :-(
There exist some very general algorithms to generate random numbers
from arbitrary distributions.
On Aug 7, 2:05 am, Jack [EMAIL PROTECTED] wrote:
I know one benchmark doesn't mean much but it's still disappointing to see
Python as one of the slowest languages in the test:
http://blog.dhananjaynene.com/2008/07/performance-comparison-c-java-p...
And how does this reflect the performance
On Jul 26, 6:47 am, Matthew Fitzgibbons [EMAIL PROTECTED] wrote:
If you're using wx, there is also wx.lib.plot, which I found to be
_much_ faster than matplotlib in my application, especially when resizing.
Yes. Matplotlib creates beautiful graphics, but are terribly slow on
large data sets.
On Jul 23, 10:07 pm, Clay Hobbs [EMAIL PROTECTED] wrote:
I need a tutorial for PyOpenGL (specifically, to be used with wxPython).
I searched with Google and didn't find one. Does anybody know where one
is?
PyOpenGL is just a wrapper for OpenGL. The API is identical. Do you
need an OpenGL
On Jul 25, 8:37 pm, Johny [EMAIL PROTECTED] wrote:
Is it possible to run a Python program as daemon?
Thanks
Here is an example on how to run a Python script as a Unix daemon:
http://svn.plone.org/svn/collective/bda.daemon/trunk/bda/daemon/daemon.py
Basically it forks twice and redirects open
On Jul 25, 8:13 am, Pierre Dagenais [EMAIL PROTECTED] wrote:
What is the easiest way to draw to a window? I'd like to draw something
like sine waves from a mathematical equation.
Newbie to python.
For mathematica equations, NumPy and matplotlib is probably the best
option. I prefer to embed
On Jul 11, 12:00 pm, James Fassett [EMAIL PROTECTED] wrote:
tuple_list = (
('John', 'Doe'),
('Mark', 'Mason'),
('Jeff', 'Stevens'),
('Bat', 'Man')
)
# what I'd do in C or other procedural languages
result_list = []
for item in tuple_list:
On 7 Jul, 04:33, [EMAIL PROTECTED] wrote:
Is their a program that lets you design a GUI by hand (like gambas)
not by code (like wxpython) but the commands are in python?
A program similar to gambas or vb
Gambas with python code instead of gambas code would be perfect.
Thanks in advance
I
On 7 Jul, 22:35, [EMAIL PROTECTED] wrote:
Hello,
I have recently become interested in using python for scientific
computing, and came across both sage and enthought. I am curious if
anyone can tell me what the differences are between the two, since
there seems to be a lot of overlap (from
On Jun 12, 3:48 pm, Mark [EMAIL PROTECTED] wrote:
Is this possible?
def foobar(user,score):
sums = {}
for u,s in zip(user,score):
try:
sums[u] += s
except KeyError:
sums[u] = s
return [(u, sums[u]) for u in sums].sort()
usersum = foobar(user,score)
for
On Jun 5, 11:02 am, pataphor [EMAIL PROTECTED] wrote:
This is probably not very central to the main intention of your post,
but I see a terminology problem coming up here. It is possible for
python objects to share a reference to some other object. This has
nothing to do with threads or
On Jun 5, 3:26 pm, Fuzzyman [EMAIL PROTECTED] wrote:
So, you are stating that no API programmer using Python *ever* has a
valid or genuine reason for wanting (even if he can't have it) genuine
'hiding' of internal state or members from consumers of his (or
her...) API?
Michael
On Jun 4, 8:45 am, [EMAIL PROTECTED] wrote:
I've to admit I'm a newbie to this kind of programming...
what if I have to run thousands of these commands...it doesn't make
sense to create
thousands of threads..
Is there a way that above mentioned piece of code be made to worked...
Are you
I sometimes read python-dev, but never contribute. So I'll post my
rant here instead.
I completely support adding this module to the standard lib. Get it in
as soon as possible, regardless of PEP deadlines or whatever.
I don't see pyprocessing as a drop-in replacement for the threading
module.
On Jun 4, 8:14 pm, Gandalf [EMAIL PROTECTED] wrote:
I tried to import win32ui.PyCRichEditCtrl, But the shell told me
their's no such module.
There isn't, as it is a class. win32ui is a module. If you cannot
import that, you don't have pywin32 installed. Go get it from
Sourceforge.
--
On Jun 4, 11:29 pm, Paul Boddie [EMAIL PROTECTED] wrote:
tested the executable on Windows. COW (copy-on-write, for those still
thinking that we're talking about dairy products) would be pretty
desirable if it's feasible, though.
There is a well known C++ implementation of cow-fork on Windows,
On May 24, 3:41 pm, Sh4wn [EMAIL PROTECTED] wrote:
first, python is one of my fav languages, and i'll definitely keep
developing with it. But, there's 1 one thing what I -really- miss:
data hiding. I know member vars are private when you prefix them with
2 underscores, but I hate prefixing my
On Jun 2, 12:40 pm, Antoon Pardon [EMAIL PROTECTED] wrote:
I think you completed missed the point.
This is just a proof of concept thing. In a real example there would
of course no Set en Get methods but just methods that in the course
of their execution would access or update the hidden
On Jun 4, 3:20 am, [EMAIL PROTECTED] wrote:
It seems that stdout.readline() is a blocking read and it just gets
stuck their..
How to fix this ..
Threads are the simplest remedy for blocking i/o.
--
http://mail.python.org/mailman/listinfo/python-list
On Jun 4, 12:41 am, Ethan Furman [EMAIL PROTECTED] wrote:
the kernel itself, *is* kernel coding. And as wonderful as Python is,
it is *not* for kernel coding.
Not in its present form, no, it would take some porting. But aside
from that, is there any reason one could not embed a python
On May 29, 6:07 pm, [EMAIL PROTECTED] wrote:
The current edition of the book presents old style classes. I am
considering
switching to new style classes on the assumption that this should be
the default
choice for new programs. The drawback is that a lot of the online
documentation
still
On May 25, 8:02 pm, Rodrigo Lazo [EMAIL PROTECTED] wrote:
what about heapq for sorting?
Heap is the data structure to use for 'fast (nearly) sorted inserts'.
But heapq do not support (as far as I know) deletion of duplicates.
But a custom heap class coud do that of course.
--
On May 23, 12:33 am, gianluca [EMAIL PROTECTED] wrote:
Hy,
I need help about use dll with ctypes. I've compiled my dll C library
and I copied it in c:\windows\system32. When I load it with
myDLL=cdll.LoadLibrary(find_library(myDLL.dll)) It seem all OK but
python don't see the dll function.
On May 22, 6:14 pm, cm_gui [EMAIL PROTECTED] wrote:
I've yet to see a web application written in Python which is really
fast.
I bet you have a slow dial-up connection.
--
http://mail.python.org/mailman/listinfo/python-list
On May 21, 12:01 pm, Bruno Desthuilliers bruno.
[EMAIL PROTECTED] wrote:
C has proven very difficult to optimize, particularly because pointer
aliasing prevents efficient register allocation.
Does this compare to optimizing something like Python ? (serious
question, but I think I already
On May 21, 11:59 am, Bruno Desthuilliers bruno.
[EMAIL PROTECTED] wrote:
Strange enough, no one calls Java or C# 'interpreted languages', while
they (or, to be more exact, their reference implementations) both use
the same byte-code/VM scheme[1].
Java interprets the bytecode in a virtual
On May 21, 11:38 am, [EMAIL PROTECTED] wrote:
if (match = my_re1.match(line):
# use match
elsif (match = my_re2.match(line)):
# use match
elsif (match = my_re3.match(line))
# use match
...buy this is illegal in python.
Assignment expressions is disallowed in Python to protect
On May 19, 8:07 pm, Vicent Giner [EMAIL PROTECTED] wrote:
By the way, is it possible (and easy) to call a C function from a
Python program??
Yes it is. You can e.g. use ctypes for that.
--
http://mail.python.org/mailman/listinfo/python-list
On May 19, 10:42 pm, [EMAIL PROTECTED]
[EMAIL PROTECTED] wrote:
Well... They do - they are called 'C compilers' !-) As Roel Schroven
mentioned - and he is at least partially right on this point - C has
been designed to make optimizing C compiler not to hairy to write.
C has proven very
On May 20, 7:24 pm, Grant Edwards [EMAIL PROTECTED] wrote:
http://docs.python.org/lib/module-ctypes.html
Also see Cython (or Pyrex if you prefer the original). With Cython it
is easy to call C functions, but Cython also alleviates the need for C
to a great extent. The advantage of Cython over
On May 20, 3:37 pm, brad [EMAIL PROTECTED] wrote:
seen this first hand. Getting results back the same day or sooner may be
important. In cases such as this, I use C or C++... nothing else will
do. Nothing else is as fast.
Right. Tell that to the Fortran community. And by the way:
On May 18, 5:46 am, inhahe [EMAIL PROTECTED] wrote:
The numbers I heard are that Python is 10-100 times slower than C.
Only true if you use Python as if it was a dialect of Visual Basic. If
you use the right tool, like NumPy, Python can be fast enough. Also
note that Python is not slower than
On May 18, 4:20 pm, David C. Ullrich [EMAIL PROTECTED] wrote:
Are you going to be doing research _about_ the
algorithms in question or is it going to be research
_using_ these algorithms to draw conclusions
about other things?
Most of the replies seem to be assuming the latter.
If it's the
On May 19, 12:20 am, John Salerno [EMAIL PROTECTED] wrote:
Hey all. Just thought I'd ask a general question for my own interest. Every
time I think of something I might do in Python, it usually involves creating
a GUI interface, so I was wondering what kind of work you all do with Python
On May 18, 12:32 am, Vicent Giner [EMAIL PROTECTED] wrote:
* As far as I understand, the fact that Python is not a compiled
language makes it slower than C, when performing huge amounts of
computations within an algorithm or program.
First of all: whatever you do, use NumPy for all numerical
On May 3, 10:13 pm, hdante [EMAIL PROTECTED] wrote:
I believe that moving this to third party could be better. What about
numpy ? Doesn't it already have something similar ?
Yes, Kahan summation makes sence for numpy arrays. But the problem
with this algorithm is optimizing compilers. The
On Apr 30, 8:06 pm, L. Lindstrom [EMAIL PROTECTED] wrote:
I have read that Python extension modules must link to the same C
run-time as the Python interpreter. This I can appreciate. But does this
requirement extend to the C libraries an extension module wraps.
This somewhat of a
On Apr 25, 2:03 pm, Bjoern Schliessmann usenet-
[EMAIL PROTECTED] wrote:
That's how the Java designers were thinking as well: If MI is
allowed, programmers will suddenly get an irresistible urge to use
MI to write unmaintainable spaghetti code. So let's disallow MI
for the sake of common
On Apr 25, 4:38 pm, Gabriel Rossetti
[EMAIL PROTECTED] wrote:
Hello,
I'm having some trouble with the Queue class, for some reason, if I do
this (ch == ) :
q = Queue.Queue(0)
repr(ch)
q.put(ch, True)
len(q.queue)
from Queue import Queue
q = Queue(0)
s = '\x02'
q.put(s,True)
On Apr 23, 9:13 pm, [EMAIL PROTECTED] wrote:
A simple yet dangerous and rather rubbish solution (possibly more of a
hack than a real implementation) could be achieved by using a
technique described above:
?php
echo exec('python foo.py');
This will spawn a Python interpreter, and
On Apr 23, 9:08 pm, MC [EMAIL PROTECTED] wrote:
If you are under Windows, you can:
- call Python's functions via Active-Scripting
- call a Python COM server (functions or properties)
For that, use Pywin32. And, in all cases, call functions can use
parameters.
This is perhaps the
On Mar 27, 4:44 pm, Jean-Paul Calderone [EMAIL PROTECTED] wrote:
PyPy is self-hosted and has been for some time (a year or so?).
This is technically not correct. PyPy is hosted by RPython, which is
not Python but a different language all together.
--
On Mar 27, 4:02 pm, king kikapu [EMAIL PROTECTED] wrote:
As for psyco, are there any alternatives to use now ?
When Cython has implemented all of Python's syntax, we can replace
CPython's compiler and bytecode interpreter with Cython and a C
compiler. Cython can be one or two orders of
On Mar 27, 5:01 pm, king kikapu [EMAIL PROTECTED] wrote:
Hmmm...thanks but i think Pyrex-like solution is not the ideal one.
Coming from C# and having 8 years of expertise on it, i have gain a
very positive thinking about jit compilers and i think that psyco (ok,
a just-in-time specializer)
On Mar 27, 5:01 pm, king kikapu [EMAIL PROTECTED] wrote:
Hmmm...thanks but i think Pyrex-like solution is not the ideal one.
Coming from C# and having 8 years of expertise on it, i have gain a
very positive thinking about jit compilers and i think that psyco (ok,
a just-in-time specializer)
On Apr 25, 2:15 am, Steve Holden [EMAIL PROTECTED] wrote:
I believe, without the benefit of recent experience, that the R stands
for Restricted. Thus and RPython program must of necessity also be a
valid Python program. Or do you know something I don't?
That is correct. But RPython is not
On Mar 28, 8:06 pm, Paul Boddie [EMAIL PROTECTED] wrote:
From what I've seen from browsing publicly accessible materials,
there's a certain commercial interest in seeing Psyco updated
somewhat.
YouTube uses Psyco.
--
http://mail.python.org/mailman/listinfo/python-list
On Apr 25, 3:27 am, Steve Holden [EMAIL PROTECTED] wrote:
That seems a little harsh: it's Python-in-a-strait-jacket.
The fact remains that since RPython programs also run under the standard
interpreter (albeit a factor of maybe a hundred times more slowly) their
claim of self-hosting is
On Apr 22, 1:07 pm, GD [EMAIL PROTECTED] wrote:
Please remove ability to multiple inheritance in Python 3000.
Too late for that, PEPs are closed.
Multiple inheritance is bad for design, rarely used and contains many
problems for usual users.
Every program can be designed only with single
On Apr 24, 5:51 am, Nick Stinemates [EMAIL PROTECTED] wrote:
I don't understand how the 2 are mutually exclusive?
You can have PHP and Python bindings installed on the same Apache
server, unless I'm mistaken?
Not everyone have the luxury of having mod_python installed. It
depends on the
On Apr 25, 4:57 am, Steve Holden [EMAIL PROTECTED] wrote:
I am simply pointing out that RPython is used for efficiency, not to do
things that can't be done in standard Python.
Yes. And if we only use a very small subset of Python, it would in
effect be a form of assembly code. Hence my comment
On Apr 25, 5:09 am, Jack [EMAIL PROTECTED] wrote:
typedef struct
{
char *country_short;
char *country_long;
char *region;
char *city;
char *isp;
float latitude;
float longitude;
char *domain;
char *zipcode;
char *timezone;
char *netspeed;
} IP2LocationRecord;
First
On Apr 25, 5:15 am, sturlamolden [EMAIL PROTECTED] wrote:
First define a struct type IP2LocationRecord by subclassing from
ctypes.Structure. Then define a pointer type as
ctypes.POINTER(IP2LocationRecord) and set that as the function's
restype attribute. See the ctypes tutorial or reference
On Apr 25, 5:39 am, Jack [EMAIL PROTECTED] wrote:
AttributeError: 'LP_IP2LocationRecord' object has no attribute
'country_short'
As it says, LP_IP2LocationRecord has no attribute called
'country_short'. IP2LocationRecord does.
Use the 'contents' attribute to dereference the pointer. That is:
On Apr 25, 5:39 am, Jack [EMAIL PROTECTED] wrote:
IP2Location_get_all.restype = POINTER(IP2LocationRecord)
IP2LocationObj = IP2Location_open(thisdir + '/IP-COUNTRY-SAMPLE.BIN')
rec = IP2Location_get_all(IP2LocationObj, '64.233.167.99')
print rec.country_short
print rec.contents.country_short
On Apr 22, 8:36 pm, Kenneth McDonald
[EMAIL PROTECTED] wrote:
Sadly.
I can easily access:
http://www.crummy.com/software/BeautifulSoup/
--
http://mail.python.org/mailman/listinfo/python-list
On Apr 22, 12:52 pm, Harishankar [EMAIL PROTECTED] wrote:
Sorry to start off on a negative note in the list, but I feel that the Python
subprocess module is sorely deficient because it lacks a mechanism to
Have you looked at the processing module in cheese shop?
--
On Apr 21, 4:09 am, Gabriel Genellina [EMAIL PROTECTED]
wrote:
I'm not sure if this will help the OP at all - going into a world of dangling
pointers, keeping track of ownership, releasing memory by hand... One of the
good things of Python is automatic memory management. Ensuring that all
On Apr 22, 2:00 am, Mitko Haralanov [EMAIL PROTECTED] wrote:
As far as I know, I have done everything by the book yet I can't seem
to figure out where the problem is. Any help would be great?
Albeit not having looked at your code in detail, I'm wiling to bet you
have one of the refcounts
On Apr 20, 2:46 pm, Hank @ITGroup [EMAIL PROTECTED] wrote:
That is my question, after ``del``, sometimes the memory space returns
back as nothing happened, sometimes not... ...
What exactly was happening???
Python has a garbage collector. Objects that cannot be reached from
any scope is
On Apr 20, 5:28 pm, JB Stern [EMAIL PROTECTED] wrote:
Curious Steve, how do you pay the rent and by what authority do you
speak for The Python world? Your opinion couldn't be more wrong for
programmers like myself who live by the code they write (as opposed to
its support).
Are you afraid
On Apr 20, 9:09 pm, Hank @ITGroup [EMAIL PROTECTED] wrote:
Could you please give us some clear clues to obviously call python to
free memory. We want to control its gc operation handily as we were
using J**A.
If you want to get rid of a Python object, the only way to do that is
to get rid of
On Apr 20, 8:49 pm, Roy Smith [EMAIL PROTECTED] wrote:
Hiding your source code is not easy (perhaps impossible) in Python, for
reasons which have been covered at length on a regular basis in this forum.
If you only ship .pyc or .pyo files, there is still enough information
recoverable in the
On Apr 21, 12:25 am, Zethex [EMAIL PROTECTED] wrote:
Anyway the amount of [[]] do increase over time. Im just wondering is there
a simple way to add these together so they become 1 simple list, so it would
be ['computer''asus'] etc without the nested list. Its random the
amount each
On Apr 21, 12:25 am, Zethex [EMAIL PROTECTED] wrote:
Anyway the amount of [[]] do increase over time.
You can flatten a nested list using a closure and recursion:
def flatten(lst):
tmp = []
def _flatten(lst):
for elem in lst:
if type(elem) != list:
On Apr 21, 2:35 am, sturlamolden [EMAIL PROTECTED] wrote:
This also shows how easy it is to boost the performance of Python code
using Cython.
We can improve this further by getting rid of the tmp.append attribue
lookup:
cdef _flatten(lst, append):
for elem in lst:
if type(elem
On Apr 17, 4:06 pm, AlFire [EMAIL PROTECTED] wrote:
Q: why function got dictionary? What it is used for?
As previously mentioned, a function has a __dict__ like (most) other
objects.
You can e.g. use it to create static variables:
int foobar()
{
static int i = 0;
return i++;
}
is
On Apr 19, 8:33 pm, [EMAIL PROTECTED]
[EMAIL PROTECTED] wrote:
barfoo = foobar
foobar = lambda x : x
And boom.
That's why I used the qualifier 'roughly equivalent' and not simply
'equivalent'.
--
http://mail.python.org/mailman/listinfo/python-list
On Apr 19, 10:29 pm, [EMAIL PROTECTED] [EMAIL PROTECTED]
wrote:
FWIW, NT's POSIX subsytem fork() uses (or used to use) the NULL
SectionHandle method and was POSIX certified, so it's certainly
possible.
Windows Vista Ultimate comes with Interix integrated, renamed
'Subsystem for Unix based
On 18 Apr, 21:28, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote:
Passing a NULL SectionHandle to NTCreateProcess/CreateProcessEx
results in a fork-style copy-on-write duplicate of the current process.
I know about NtCreateProcess and ZwCreateProcess, but they just create
an empty process - no
On 17 Apr, 15:21, Martin P. Hellwig [EMAIL PROTECTED] wrote:
If not, what is the advantage above already present solutions?
Well... I like the processing module. Except that Wintendo toy OS has
no fork() availabe for the Win32 subsystem, which makes it a bit
limited on that platform (slow at
On 17 Apr, 10:25, Martin v. Löwis [EMAIL PROTECTED] wrote:
help progress at all. I think neither was the case in this thread -
the guy claimed that he actually did something about the GIL, and
now we are all waiting for him to also tell us what it is that he
did.
Ok, I did not remove the
On 17 Apr, 09:11, Matias Surdi [EMAIL PROTECTED] wrote:
It's april 1st again???
Not according to my calendar. This was not meant as a joke. I think I
may have solved the GIL issue. See my answer to Martin v. Löwis for a
full explanation.
--
http://mail.python.org/mailman/listinfo/python-list
On 17 Apr, 10:12, Steve Holden [EMAIL PROTECTED] wrote:
Quick, write it down before the drugs wear off.
Hehe, I don't take drugs, apart from NSAIDs for arthritis. Read my
answer to Martin v. Löwis.
--
http://mail.python.org/mailman/listinfo/python-list
On Apr 17, 5:46 pm, Hrvoje Niksic [EMAIL PROTECTED] wrote:
Have you tackled the communication problem? The way I see it, one
interpreter cannot see objects created in the other because they
have separate pools of ... everything. They can communicate by
passing serialized objects through
On Apr 17, 6:03 pm, Rhamphoryncus [EMAIL PROTECTED] wrote:
Interesting. Windows specific, but there's other ways to do the same
thing more portably.
I believe you can compile Python as a shared object (.so) on Linux as
well, and thus loadable by ctypes.
The bigger issue is that you can't
On Apr 17, 7:16 pm, Jonathan Gardner [EMAIL PROTECTED]
wrote:
On Apr 17, 8:19 am, sturlamolden [EMAIL PROTECTED] wrote:
An there you have the answer. It's really very simple :-)
That's an interesting hack.
Now, how do the processes communicate with each other without stepping
on each
Hello Guys...
I just had one moment of exceptional clarity, during which realized
how I could get the GIL out of my way... It's so simple, I cannot help
wondering why nobody has thought of it before. Duh! Now I am going to
sit and and marvel at my creation for a while, and then go to bed
(it's
On Apr 16, 4:17 am, [EMAIL PROTECTED] wrote:
Reformulating my question:
Which GUI tool, wxPython or PyQt, is more pythonic? (Please, ignore
the license issue because I am thinking about FOSS)
None of them, all three of them (you forgot PyGTK), or it doesn't
matter more. Nobody with their
On Apr 15, 7:23 pm, [EMAIL PROTECTED] wrote:
test = [[1],[2]]
x = test[0]
Python names are pointer to values. Python behaves like Lisp - not
like Visual Basic or C#.
Here you make x point to the object which is currently pointed to by
the first element in the list test. If you now reassign
On Apr 15, 8:19 pm, [EMAIL PROTECTED] wrote:
Coming from VBA I have a tendency to think of everything as an
array...
Coding to much in Visual Basic, like Fortran 77, is bad for your mind.
--
http://mail.python.org/mailman/listinfo/python-list
On Apr 11, 6:24 pm, [EMAIL PROTECTED] wrote:
Do I wind up with two completely independent interpreters, one per thread?
I'm thinking this doesn't work (there are bits which aren't thread-safe and
are only protected by the GIL), but wanted to double-check to be sure.
You can create a new
On Apr 11, 6:24 pm, [EMAIL PROTECTED] wrote:
Do I wind up with two completely independent interpreters, one per thread?
I'm thinking this doesn't work (there are bits which aren't thread-safe and
are only protected by the GIL), but wanted to double-check to be sure.
You can create a new
On Apr 12, 7:05 pm, sturlamolden [EMAIL PROTECTED] wrote:
In theory, a GIL private to each (sub)interpreter would make Python
more scalable. The current GIL behaves like the BKL in earlier Linux
kernels. However, some third-party software, notably Apache's
mod_python, is claimed to depend
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