Dennis Lee Bieber writes:
> Not to mention having to ensure that one finds ALL the references to
> the object so that they can be updated to the new address! Somehow I
> don't see a C compiler being smart enough to find intermediary pointer
We're not talking about C compilers, which can cas
On Fri, 2010-09-03 at 19:58 +0200, Virgil Stokes wrote:
> import urllib2
> import re
>
> def get_SP500_symbolsX ():
> symbols = []
> lsttradestr = re.compile('Last Trade:')
> k = 0
> for page in range(10):
>url = 'http://finance.yahoo.com/q/cp?s=%5EGSPC&c='+str(page)
>
I write some object for Taiwan Stock ...
http://github.com/toomore/goristock
But still dev ...
On Sep 3, 1:12 am, Virgil Stokes wrote:
> Has anyone written code or worked with Python software for downloading
> financial time series data (e.g. from Yahoo financial)? If yes, would you
> please
On Sep 4, 5:19 am, Ned Deily wrote:
> In article
> ,
> Kristoffer Follesdal wrote:
>
> > *Forgot to tell that I am using a Mac with Snow Leopard.
>
> Which version of Python 3.1.2? From the python.org installer?
> MacPorts? Built from source - if so, which version of Tk?
>
> --
> Ned Deily,
Dear all,
pyla stands for Python Little Algorithm is a project in pure Python
and includes simple, easy to use, yet powerful libraries for
- 2D/3D plotting using Gnuplot
- Matrix/Vector operations
- ODE solvers
- Optimization and nonlinear algebraic equation solvers
- ...
Homepage:
pyla home is:
[gc]
In article <7x7hj2kyd6@ruckus.brouhaha.com>,
Paul Rubin wrote:
>
>A minimal naive implementation indeed doubles the memory requirements,
>but from a Python perspective where every integer takes something like
>24 bytes already, even that doesn't seem so terrible.
Many people still us
In article ,
=?UTF-8?B?zp3Or866zr/Pgg==?= wrote:
>
>After all () used to define tuples and [] usedd to define lists. Why
>commas?
No, "()" does *not* define tuples, except for the empty tuple. The comma
defines tuples, with parentheses simply used for visual effect:
>>> 1, 2, 3
(1, 2, 3)
--
A
Hi girls & guys,
Just joined the group. I'm new to Python but been picking it up pretty easy.
I love it! I'm hoping to use it to make a controlling application for an
experiment. Basically I want to use it to interface with some data
acquisition (DAQ) hardware to accept incoming signals and respon
On Sat, 4 Sep 2010 14:36:38 +0100
Jack Keegan wrote:
> Just joined the group. I'm new to Python but been picking it up pretty easy.
Welcome aboard.
> As there is no switch statement in Python, I've been looking around for a
> good implementation. Most of the algorithms I've come across seem to b
Jack Keegan, 04.09.2010 15:36:
Hi girls& guys,
Just joined the group. I'm new to Python but been picking it up pretty easy.
I love it!
Welcome to the group.
I'm hoping to use it to make a controlling application for an
experiment. Basically I want to use it to interface with some data
acqu
On 04-09-2010 15:36, Jack Keegan wrote:
> Hi girls & guys,
>
> Just joined the group. I'm new to Python but been picking it up pretty easy.
> I love it! I'm hoping
> to use it to make a controlling application for an experiment. Basically I
> want to use it to
> interface with some data acquisit
Am 01.09.2010 21:18, schrieb Cappy2112:
> Has anyone else had problems running the msi for Python 2.6.6 on
> Windows 7 Professional?
I specifically tested whether "compile .py" works before the release,
and it worked fine on my machine.
I suspect you have a source file on your disk that it tries
Am 01.09.2010 23:32, schrieb Stef Mientki:
> in winpdb I see strings like this:
>
a = b'string'
a
> 'string'
type(a)
>
>
> what's the "b" doing in front of the string ?
It's redundant.
Regards,
Martin
--
http://mail.python.org/mailman/listinfo/python-list
Martin v. Loewis, 04.09.2010 18:52:
Am 01.09.2010 23:32, schrieb Stef Mientki:
in winpdb I see strings like this:
>>> a = b'string'
>>> a
'string'
>>> type(a)
what's the "b" doing in front of the string ?
It's redundant.
Not completely. (I know that you know this, but to those who don't
Am 04.09.2010 19:27, schrieb Stefan Behnel:
> Martin v. Loewis, 04.09.2010 18:52:
>> Am 01.09.2010 23:32, schrieb Stef Mientki:
>>> in winpdb I see strings like this:
>>>
>>> >>> a = b'string'
>>> >>> a
>>> 'string'
>>> >>> type(a)
>>>
>>>
>>> what's the "b" doing in front of the string ?
>>
>>
In article ,
"D'Arcy J.M. Cain" wrote:
> On Sat, 4 Sep 2010 14:36:38 +0100
> Jack Keegan wrote:
> > Just joined the group. I'm new to Python but been picking it up pretty easy.
>
> Welcome aboard.
>
> > As there is no switch statement in Python, I've been looking around for a
> > good impleme
On 04/09/2010 18:58, Roy Smith wrote:
In article,
"D'Arcy J.M. Cain" wrote:
On Sat, 4 Sep 2010 14:36:38 +0100
Jack Keegan wrote:
Just joined the group. I'm new to Python but been picking it up pretty easy.
Welcome aboard.
As there is no switch statement in Python, I've been looking aro
#/usr/bin/python
from numpy import matrix
n=input('Enter matrix range')
fr=open('mat.txt','r')
print ('Enter elements into the matrix\n')
a=matrix([[input()for j in range(n)] for i in range(n)])
for i in range(n):
for j in range(n):
print a[i][j]
print '\n'
When i r
On Sat, 04 Sep 2010 13:58:00 -0400
Roy Smith wrote:
> > while True:
> > state = state(data)
>
> This is the pattern I've always used. Simple and effective for any
> state machine which is small enough to code by hand. I generally have
> my state methods return (next_state, output) tuples,
On Sat, 04 Sep 2010 19:13:28 +0100
MRAB wrote:
> I suppose that if they are that similar then you could generate the
> code from a list or table of the states.
They generally aren't as simple as the little example script that I
cobbled together.
--
D'Arcy J.M. Cain | Democracy is thre
On 04/09/2010 19:28, Pramod wrote:
#/usr/bin/python
from numpy import matrix
n=input('Enter matrix range')
fr=open('mat.txt','r')
print ('Enter elements into the matrix\n')
a=matrix([[input()for j in range(n)] for i in range(n)])
for i in range(n):
for j in range(n):
pri
D'Arcy J.M. Cain, 04.09.2010 20:30:
On Sat, 04 Sep 2010 13:58:00 -0400
Roy Smith wrote:
while True:
state = state(data)
This is the pattern I've always used. Simple and effective for any
state machine which is small enough to code by hand. I generally have
my state methods return (next
Pramod wrote:
> #/usr/bin/python
> from numpy import matrix
> n=input('Enter matrix range')
> fr=open('mat.txt','r')
> print ('Enter elements into the matrix\n')
> a=matrix([[input()for j in range(n)] for i in range(n)])
> for i in range(n):
> for j in range(n):
> print a[i
In article ,
"D'Arcy J.M. Cain" wrote:
> On Sat, 04 Sep 2010 13:58:00 -0400
> Roy Smith wrote:
> > > while True:
> > > state = state(data)
> >
> > This is the pattern I've always used. Simple and effective for any
> > state machine which is small enough to code by hand. I generally have
Lawrence D'Oliveiro writes:
> That reinforces my point, about how easy it was to check the correctness of
> the code. In this case one simple fix, like this ...
> would render the code watertight. See how easy it is?
Well, no, it's irrelevant how easy it is to fix the issue after it's
pointed ou
On 8/28/2010 5:42 AM, Aahz wrote:
In article<4c78572c$0$28655$c3e8...@news.astraweb.com>,
Steven D'Aprano wrote:
On Fri, 27 Aug 2010 09:16:52 -0700, Aahz wrote:
In article, MRAB
wrote:
An object will be available for garbage collection when nothing refers
to it either directly or indirectl
hi all,
need your help. i get a traceback that doesn't tell much about the
actual error in my code:
Traceback (most recent call last):
File ".\eightqueens.py", line 32, in
generate(n, x, col, up, down)
File ".\eightqueens.py", line 17, in generate
else: generate(n, x, col, up, down)
On 04/09/2010 22:22, nvictor wrote:
hi all,
need your help. i get a traceback that doesn't tell much about the
actual error in my code:
Traceback (most recent call last):
File ".\eightqueens.py", line 32, in
generate(n, x, col, up, down)
File ".\eightqueens.py", line 17, in generate
thank you so much.
--
http://mail.python.org/mailman/listinfo/python-list
Maybe for the simple sum you can just use the sum builtin:
python -m timeit -s 'sum((10,)*1)'
1000 loops, best of 3: 0.0985 usec per loop
About the loop in general it's a good practice to use list comprehension and
generator expressions
2010/9/2 Michael Kreim
> Hi,
>
> I was comparing
Hello. I am still really new to python and I have a project where I
am trying to use the data files from another program and write a new
program with new user interface and all. My first step was to open
one of the files in 'rb' mode and print the contents, but I am
unfamiliar with the format. H
I forgot to mention that the output was the first 100 bytes of the
output
--
http://mail.python.org/mailman/listinfo/python-list
On 2010-09-04, genxtech wrote:
> Hello. I am still really new to python and I have a project where I
> am trying to use the data files from another program and write a new
> program with new user interface and all. My first step was to open
> one of the files in 'rb' mode and print the contents,
On 05/09/2010 00:04, genxtech wrote:
Hello. I am still really new to python and I have a project where I
am trying to use the data files from another program and write a new
program with new user interface and all. My first step was to open
one of the files in 'rb' mode and print the contents,
On Sep 4, 7:23 pm, Mats Rauhala wrote:
> On 2010-09-04, genxtech wrote:
>
> > Hello. I am still really new to python and I have a project where I
> > am trying to use the data files from another program and write a new
> > program with new user interface and all. My first step was to open
> > o
In message , MRAB
wrote:
> Lawrence D'Oliveiro writes:
>>
>> Wonder why Sun’s licence explicitly forbade its use in danger-critical
>> areas like nuclear power plants and the like, then?
>
> I thought it was just that if it wasn't explicitly forbidden then
> someone might try to use it and then
In message <4c82b097$0$1661$742ec...@news.sonic.net>, John Nagle wrote:
> Personally, I'd like to have reference counting only, an enforced
> prohibition on loops (backpointers must be weak pointers), RAII,
> and reliably ordered finalization.
Is there a cheap way of checking at runtime for c
In message <7x7hj2kyd6@ruckus.brouhaha.com>, Paul Rubin wrote:
> Lawrence D'Oliveiro writes:
>
>> In message <7xmxs2uez1@ruckus.brouhaha.com>, Paul Rubin wrote:
>>
>>> GC's for large systems generally don't free (or even examine) individual
>>> garbage objects. They copy the live objects
Lawrence D'Oliveiro writes:
>> A minimal naive implementation indeed doubles the memory requirements,
>> but from a Python perspective where every integer takes something like
>> 24 bytes already, even that doesn't seem so terrible.
>
> Doubling 24 is less terrible than doubling 4 or 8?? You’re ki
i want to learn network and socket programming but i would like to do
this in python.Reason behind this is that python is very simple and
the only language i know .
anybody can suggest me which book should i pick.
the book should have following specification--
1)not tedious to follow
2)lots of exam
On 9/4/2010 6:44 PM, Lawrence D'Oliveiro wrote:
In message<4c82b097$0$1661$742ec...@news.sonic.net>, John Nagle wrote:
Personally, I'd like to have reference counting only, an enforced
prohibition on loops (backpointers must be weak pointers), RAII,
and reliably ordered finalization.
Is
I'm attempting to implement a recursive directory monitor based on the
GIO file monitor in PyGTK. My approach is basically to take the
gio.FileMonitor returned by the method gio.File.monitor_directory(),
connect to the "changed" signal, and add or remove monitors on create/
delete events for subdir
On Thu, Sep 2, 2010 at 7:02 PM, Michael Kreim wrote:
> Hi,
>
> I was comparing the speed of a simple loop program between Matlab and
> Python.
>
> My Codes:
> $ cat addition.py
> imax = 10
> a = 0
> for i in xrange(imax):
> a = a + 10
> print a
>
> $ cat addition.m
> imax = 1e9;
> a = 0
John Nagle writes:
> Unoptimized reference counting, which is what CPython does, isn't
> all that great either. The four big bottlenecks in Python are boxed
> numbers, attribute lookups, reference count updates, and the GIL.
The performance hit of having to lock the refcounts before update h
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