On Saturday, June 14, 2014 11:17:50 AM UTC-7, sandhyaran...@gmail.com wrote:
> I am new to python, pls help me to resolve the below error
>
>
>
>
>
> >>> def fib(n):
>
> ... """Print a Fibonacci series up to n."""
>
> File "", line 2
>
> """Print a Fibonacci series up to n."""
>
>
On Saturday, August 23, 2014 6:10:29 AM UTC-7, explode...@gmail.com wrote:
> Can some one explain why this happens:
>
> True, False = False, True
>
> print True, False
>
> False True
Shush! That's one of Python's most closely-guarded secrets! Every politician
on Earth will want to learn to p
On Thursday, September 4, 2014 1:52:37 PM UTC-7, Ned Batchelder wrote:
> This seems like enough of a non-sequitur that I wonder if you posted it
> in the wrong place?
Maybe someone is trying out a new chatbot program?
--
https://mail.python.org/mailman/listinfo/python-list
I am actually teaching Python as a side job. My students have ranged from
eighth graders, up to a Silicon Valley hardware engineer who had no coding
experience, but who needed to do some test engineering.
My wife is an elementary school teacher. We occasionally talk about
age-appropriate lear
Hi folks,
Apologies if this is a bit off-topic, but there must be another
Pythoneer out there who can help me navigate my current problem.
I'm working with matplotlib, the Python graphing package. I need to
ask some questions about it, and the place to ask those questions
would appear to be the
Stef,
Are your bottom-level lists always of length 2? If so, then you could
use an array, instead of a list of lists.
Python ships with a module called array, but it doesn't allow you to
put non-numeric types into arrays, and it looks like you want the
NoneType. I use the popular numpy module,
Suppose that I have a multi-core computer with N CPU's, and I create a
multiprocessing.Pool in Python 2.6 with N-1 Processes.
(My rationale for choosing N-1 Processes was discussed here:
http://groups.google.com/group/comp.lang.python/browse_frm/thread/65ba3ccd4be8228c)
Then I use Pool.map_async(
Hate to bump this, but... I found Sourceforge's IRC, and tried to ask
for help there, and it doesn't look like I can get any help until
business hours tomorrow. Anyone?
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On Sep 15, 3:14 pm, Chris Angelico wrote:
> On Fri, Sep 16, 2011 at 6:52 AM, John Ladasky wrote:
> > Suppose that I have a second, parallelizable, long-running task T2
> > that I want to address in REAL TIME when the need arises. Using Pool,
> > is there a way for me to in
Ah. Now, see? Having the right vocabulary helps. Searching for
"priority queue" brings up this discussion from back in January:
http://groups.google.com/group/comp.lang.python/browse_frm/thread/b69aeced28634898
Now, this discussion refers to a PriorityPool class which doesn't
appear to be a sta
On Sep 15, 1:52 pm, John Ladasky wrote:
> I've been snooping around inside Pool, and I would guess that what I
> want to do is to manipulate Pool._inqueue, which is a
> multiprocessing.queues.SimpleQueue object. I haven't found any
> documentation for SimpleQueue. It ap
On Sep 16, 10:29 am, Martin Schöön wrote:
> On 2011-09-15, John Ladasky wrote:
>
> > Hate to bump this, but... I found Sourceforge's IRC, and tried to ask
> > for help there, and it doesn't look like I can get any help until
> > business hours tomorrow. Anyone
Hey, this pretty easy hack appears to work!
[code]
from multiprocessing.pool import Pool, RUN, MapResult, mapstar
class PriorityPool(Pool):
def map_async_nowait(self, func, iterable, chunksize=None, \
callback=None):
"""
Same as map_async(), except uses put_nowait()
On Sep 17, 2:20 pm, Chris Angelico wrote:
> I would consider reporting it as a bug in Windows 8, not a bug in Python.
>
> Chris Angelico
+1, beat me to it. :^)
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I'm using matplotlib and I'm happy with it. Quick plotting is easy
using the pyplot interface, which resembles the popular software
package MATLAB. As your ambitions grow, matplotlib has many
sophisticated tools waiting for you.
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On Sep 24, 6:53 am, Steven D'Aprano wrote:
> I'm trying to generate a sequence of equally-spaced numbers between a lower
> and upper limit. Given arbitrary limits, what is the best way to generate a
> list of equally spaced floats with the least rounding error for each point?
>
> For example, supp
Hi folks,
I have 500 x 500 arrays of floats, representing 2D "grayscale" images,
that I need to resample at a lower spatial resolution, say, 120 x 120
(details to follow, if you feel they are relevant).
I've got the numpy, and scipy, and matplotlib. All of these packages
hint at the fact that the
On Sep 30, 11:54 pm, Dennis Lee Bieber wrote:
> How difficult would it be to convert the "array" to a PIL image? I'm
> fairly certain PIL has operations to rescale images.
Yes, I considered this approach -- but I have a lot of arrays to
resample, and I didn't want to further slow what is
On Sep 30, 1:51 pm, Jon Clements wrote:
> Is something like
> http://docs.scipy.org/doc/scipy/reference/generated/scipy.misc.imresize.html
> any use?
There we go! That's the kind of method I was seeking. I didn't think
to look outside of scipy.interpolate. Thanks, Jon.
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http://mail.python.
On Oct 1, 2:22 am, John Ladasky wrote:
> On Sep 30, 1:51 pm, Jon Clements wrote:
>
> > Is something like
> >http://docs.scipy.org/doc/scipy/reference/generated/scipy.misc.imresi...
> > any use?
>
> There we go! That's the kind of method I was seeking.
On Oct 8, 5:01 am, Steven D'Aprano wrote:
> Who like that second one speaks?
Yoda his name is. Programs in Forth he must.
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On Oct 14, 7:32 pm, alex23 wrote:
> You can do this right now with Python 3.2+ and concurrent.futures:
>
> from concurrent.futures import ThreadPoolExecutor
You may have finally sold me on struggling through the upgrade from
Python 2.6! I've been doing reasonably well with the Multiprocessing
m
On Oct 27, 1:11 am, Andreas Neudecker wrote:
> Any more philsophical Python code out there?
That is the question.
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http://mail.python.org/mailman/listinfo/python-list
Hi folks,
I'm trying to write tidy, modular code which includes a long-running process.
From time to time I MIGHT like to check in on the progress being made by that
long-running process, in various ways. Other times, I'll just want to let it
run. So I have a section of code which, generally
On Thursday, November 17, 2011 6:45:58 PM UTC-8, Chris Rebert wrote:
> Seems fine to me (good use of the null object pattern), although I
> might define _pass() to instead take exactly 1 argument, since that's
> all you ever call report() with in your example.
Oops, I over-simplified the calls to
On Thursday, November 17, 2011 8:34:22 PM UTC-8, Dennis Lee Bieber wrote:
> On Thu, 17 Nov 2011 18:18:11 -0800 (PST), John Ladasky
> declaimed the following in
> gmane.comp.python.general:
> > def _pass(*args):
> > pass
> >
> This is the equi
Hi, folks,
Back in 2002, I got back into programming after a nine-year hiatus. I
needed a new programming language, was guided to Python 2.2, and was
off to the races. I chose the SciTE program editor, and I have been
using it ever since. I'm now using Python 2.6 on Ubuntu Linux 10.10.
My prog
On a related note, pickling of arrays of float64 objects, as generated
by the numpy package for example, are wildly inefficient with memory.
A half-million float64's requires about 4 megabytes, but the pickle
file I generated from a numpy.ndarray of this size was 42 megabytes.
I know that numpy ha
On Dec 1, 12:21 am, Chris Angelico wrote:
> On Thu, Dec 1, 2011 at 2:15 PM, Roy Smith wrote:
> That's a self-contained piece of code.If I came upon it, I'd probably
> copy and paste it to IDLE, see what it comes up with, and proceed from
> there.
+1. That was going to be my comment exactly.
-
Thanks, Marco.
I've noticed that the matplotlib reference manual recommends ipython.
I haven't been clear what its advantages are, but if interacting with
multiprocessing correctly is one of them, I'll try it.
If ipython does everything that IDLE does and more, why is IDLE still
shipped with Pyth
On Dec 6, 1:42 pm, Terry Reedy wrote:
> On 12/6/2011 2:13 PM, John Ladasky wrote:
> > Exception in thread Thread-1:
> > Traceback (most recent call last):
> > File "/usr/lib/python2.6/threading.py", line 532, in
> > __bootstrap_inner
> >
Thanks once again to everyone for their recommendations, here's a
follow-up. In summary, I'm still baffled.
I tried ipython, as Marco Nawijn suggested. If there is some special
setting which returns control to the interpreter when a subprocess
crashes, I haven't found it yet. Yes, I'm RTFM. As
Hi folks,
A tangent off of this thread:
http://groups.google.com/group/comp.lang.python/browse_frm/thread/751b7050c756c995#
I'm programming in Python 2.6 on Ubuntu Linux 10.10, if it matters.
I'm trying to track down a multiprocessing bug. Here's my traceback.
All lines of code referenced in th
On Dec 9, 9:00 pm, Terry Reedy wrote:
> On 12/9/2011 6:14 PM, John Ladasky wrote:
>
> >http://groups.google.com/group/comp.lang.python/browse_frm/thread/751...
>
> > I'm programming in Python 2.6 on Ubuntu Linux 10.10, if it matters.
>
> It might, as many bugs have
On Dec 10, 10:38 am, Andrew Berg wrote:
> On 12/10/2011 11:53 AM, John Ladasky wrote:> Why did you specify Python
> 2.7.2, instead of the 2.7.6 version that is
> > being offered to me by Ubuntu Software Center? Does it matter?
>
> There is no Python 2.7.6. I think you have
I'm chasing down a bug that I think may be in my own code. But a
fellow Pythoneer suspected that I might actually be looking at a bug
in Python itself.
http://groups.google.com/group/comp.lang.python/browse_thread/thread/f4b5843e2b06d1a6
Because I was using Python 2.6.6, and I was told that only
On Dec 20, 4:08 pm, Jerry Hill wrote:
> From the psyco homepage (http://psyco.sourceforge.net/) "Python 2.7
> is unsupported so far. Anyone interested in porting Psyco to it is
> welcome. I started the work in a branch but it needs finishing."
> That's the most recent news item on the home page,
I hope that the interested parties who offered me help will remember
this thread title. It has been a few weeks.
After fussing around with an alternate installation of Python 2.7.2 on
top of Ubuntu Linux 10.04, I decided it would be easier to upgrade to
Ubuntu 11.10, for which Python 2.7.2 is the
On Jan 3, 7:40 am, BV wrote:
> MOST COMMON QUESTIONS ASKED BY NON-MUSLIMS
Q0. Why do thousand-line religious posts appear in comp.lang.python?
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http://mail.python.org/mailman/listinfo/python-list
On Tuesday, February 5, 2013 5:55:50 PM UTC-8, Steven D'Aprano wrote:
> To do anything meaningful in bash, you need to be an expert on
> passing work off to other programs...
[snip]
> If you took the Zen of Python,
> and pretty much reversed everything, you might have the Zen of Bash:
I have to
On Thursday, March 14, 2013 3:12:11 AM UTC-7, Ana Dionísio wrote:
> for b in range (len(t_amb)):
> a=8
> for d in t_amb[b]:
> a=a+1
> sheet.write(a,b+1,d)
>
> The error appear in "for d in t_amb[b]:" and I don't understand why. Can you
> help me?
It looks to me like you
On Monday, April 1, 2013 8:30:56 AM UTC-7, Pierre O'Dee wrote:
> Guido went on to say that he's now working on a new language
> called Giddy-up-and-Go which will take the worst features of C++,
> Java, and French combined with elements of both PHP and Klingon
> syntax. He said that this new endeav
I'm revisiting a project that I haven't touched in over a year. It was written
in Python 2.6, and executed on 32-bit Ubuntu 10.10. I experienced a 20%
performance increase when I used Psyco, because I had a
computationally-intensive routine which occupied most of my CPU cycles, and
always rec
On Thursday, April 4, 2013 7:39:16 PM UTC-7, MRAB wrote:
> Have you looked at Cython? Not quite the same, but still...
I'm already using Numpy, compiled with what is supposed to be a fast LAPACK. I
don't think I want to attempt to improve on all the work that has gone into
Numpy.
--
http://ma
On Friday, April 5, 2013 1:27:40 AM UTC-7, Chris Angelico wrote:
> 1) Can you optimize your algorithms? Three days of processing is... a LOT.
Neural network training. Yes, it takes a long time. Still, it's not the most
tedious code I run. I also do molecular-dynamics simulations with GROMACS,
On Friday, April 5, 2013 10:32:21 AM UTC-7, Ian wrote:
> That doesn't seem to follow from your original post. Because Numpy is
> a C extension, its performance would not be improved by psyco at all.
What about the fact that Numpy accommodates Python's dynamic typing? You can
pass arrays of int
Hi there.
The following minimal code in Python 2.3.4 works under Idle v. 1.0.3,
but not under SciTE v. 1.66:
from time import sleep
try:
while True:
sleep(0.25)
print ".",
except KeyboardInterrupt:
print "\nKeyboard interrupt received. Exiting program.\n\n"
Under SciTE,
Thanks for the SciTE info, Neil.
Yes, it was silly of me to forget to state that I'm using Win32.
Normally, when I post to comp.lang.python, I remember to include that
fact... :^P
+-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-+
| Ladasky Home Solar, Inc.: blowing sunshine up your
Thanks Robert, I just poked around and found a PythonWin web page:
http://aspn.activestate.com/ASPN/docs/ActivePython/2.3/pywin32/html/pythonwin/readme.html
>From other links it appears that SciTE was based on PythonWin, and not
the other way around. For people coding in other languages besides
Hi, folks,
This probably has to do with Numeric and not with wxPython, but I
mention both for completeness.
My OS: Win2000
Python: 2.3.4
wx: 2.6.1.0, Unicode version
Numeric: 23.8
Here's the minimal code:
height = 50
width = 60
L = []
for y in r
On Apr 27, 9:40 pm, Robert Kern <[EMAIL PROTECTED]> wrote:
> wx.Point objects are being recognized as sequences by array(). Consequently,
> reshape() thinks you are trying to reshape a (height*width, 2) array into a
> (height, width) array. You might want to create an empty (height, width)
> PyObj
On Oct 8, 12:30 pm, [EMAIL PROTECTED] wrote:
> On Oct 8, 3:07 pm, [EMAIL PROTECTED] wrote:
> > Any suggestions?
Sure -- my suggestion is to post in relevant newsgroups!
Rec.music.hip-hop, comp.lang.python, comp.lang.ruby, and
alt.comp.freeware are not appropriate places for your inquiries.
Alt.su
Hello again!
Suppose that I have several subclasses which inherit from a base
class, thus:
class Foo(object):
class Spam1(Foo):
class Spam2(Foo):
class Spam3(Foo):
etc. The list of subclasses is not fully defined. It is supposed to
be extensible by the user.
Many methods will differ betwee
I forgot to add -- though I suspect it should not matter -- I'm using
Python 2.5.1 on Ubuntu Linux 8.04.
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http://mail.python.org/mailman/listinfo/python-list
On Oct 23, 6:56 pm, "Chris Rebert" <[EMAIL PROTECTED]> wrote:
> In __bases__, e.g. Spam1.__bases__, which would be (,).
> In practice, you probably just want to use if isinstance(some_obj,
> Foo): which will be true for SpamN instances.
Thank you, Chris. Class.__bases__ is exactly what I wante
On Oct 23, 6:59 pm, "James Mills" <[EMAIL PROTECTED]>
wrote:
> Developer. NOT User.
For the foreseeable future, this program is for my use only. So the
developer and the user are one and the same.
And, thank you, __bases__ is what I was looking for. Though Chris
Mills also pointed out that isi
Hi folks,
Running Python 2.5 on both a Windows XP laptop, and an Ubuntu Linux
7.04 desktop.
I've gotten tired of maintaining multiple copies of my personal
modules that I use over and over. I have copies of these files in the
same directory as the main program I happen to be working on at the
ti
On Jun 3, 6:52 pm, Ben Finney <[EMAIL PROTECTED]>
wrote:
> John Ladasky <[EMAIL PROTECTED]> writes:
> > I want to know what is the *recommended* way to integrate my own
> > personal modules with Python. Thanks!
>
> You want the 'distutils' documenta
Hi folks,
I've played around with neural nets for a while. I wrote my own slow,
pure-Python NN package. I knew that there were Python NN packages out
there -- but I couldn't really understand their features and
documentation at first, not without some hands-on experience.
I haven't yet solved a
Thanks to everyone who replied. I haven't chosen a definite direction
for my project yet. But you have given me some good leads.
Google Books offers previews of many pages of John Koza's book,
published in the early 1990's. I'm reading through the preview pages,
with the idea of purchasing a mo
[EMAIL PROTECTED] wrote:
> I am also a newbie and learning like you are. I was wondering if do you
> know any wxPython forum just for GUIs ?
> Good luck with your project and hope that some guru helps us out.
If you are reading this via Usenet, you can subscribe to the newsgroup
comp.soft-sys.wxw
Hello everyone,
I've posted this same question over on ubuntuforums.org, so I'm trying
to get help in all of the logical places.
I'm running Ubuntu Linux 8.04 (Hardy) on a fairly new x86 box, with
two hard disks in a software RAID 1 configuration.
Hardy comes with Python 2.5 as a standard packag
Thanks, Benjamin, I am getting a handle on this.
I've written my own Python modules before, and have installed them
using distutils. So I know that procedure. I just downloaded the
Numpy 1.4.0 tarball, and I succeeded in installing it. A program I
wrote which depends on numpy ran successfully f
On Jan 24, 3:52 pm, Christian Heimes wrote:
> By the way you mustn't install your own Python with "make install", use
> "make altinstall"! Your /usr/local/bin/python binary masks the original
> python command in /usr/bin. You should remove all /usr/local/bin/py*
> binaries that do not end with 2.
Hi Mike,
Thanks, I forgot that wxPython-users is distinct from comp.soft-
sys.wxwindows. I'll give it a try.
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On Oct 10, 12:25 pm, omer azazi wrote:
> Sorry for not sending anything related to this group but it might be
> something new to you.
[198 lines deleted]
Reported to GMail admins for spam.
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On Nov 14, 11:30 pm, alex23 wrote:
> On Nov 15, 4:39 pm, Dmitry Groshev wrote:
>
> > if x in range(a, b): #wrong!
>
> Only in Python 3.x, it's perfectly valid in Python 2.x. To achieve the
> same in Python 3.x, try:
>
> if x in list(range(a, b,)): # BUT SEE MY COMMENT BELOW
>
> > it feels
On Nov 16, 2:30 pm, laspi wrote:
>Is Unladen Swallow dead?
No, it's just resting.
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On Jan 10, 1:43 pm, Alice Bevan–McGregor wrote:
> On 2011-01-10 13:02:09 -0800, MRAB said:
>
> Wikipedia is a Wiki; everyone is free to contribute and correct mistakes.
>
> - Alice.
Except for some of us.
I tried to make a correction to a chemistry Wikipedia entry several
months back. I
On Aug 4, 3:21 pm, Jay Bird wrote:
> Hi everyone,
>
> I wanted to thank you all for your help and *excellent* discussion. I
> was able to utilize and embed the script by Grigor Lingl in the 6th
> post of this discussion to get my program to work very quickly (I had
> to do about 20 comparisons pe
You might want to direct your wxPython questions to the dedicated
wxPython newsgroup. It's Google-only, and thus not part of the Usenet
hierarchy. But it's the most on-topic newsgroup you will find.
http://groups.google.com/group/wxpython-users
I attempted to crosspost this article to wx-python
Hi folks,
I am aware that numpy has its own discussion group, which is hosted at
gmane. Unfortunately, I can't seem to get in to gmane today.
In any case, I'm not sure whether I have a problem with numpy, or with
my understanding of the Python pickle module, so I'm posting here.
I am pickling n
Hi Robert,
Thanks for the quick reply.
On Sep 13, 1:22 pm, Robert Kern wrote:
> The problem is that you are trying to use "is" to compare by Python object
> identity. Except for dtype=object arrays, the object identities of the
> individual elements that you extract from numpy arrays are never
On Sep 13, 4:17 pm, Carl Banks wrote:
> On Sep 13, 3:18 pm, John Ladasky wrote:
>
> > In my leisure time, I would like to dig deeper into the issue of why
> > object identities are not guaranteed for elements in numpy arrays...
> > with elements of type "float",
On Nov 4, 10:21 am, de...@web.de (Diez B. Roggisch) wrote:
> macm writes:
> for value in d.values():
> if isinstance(value, dict):
I'm not a Python guru, but... do you care that you're breaking duck
typing here? I've had other programmers warn me against using
isinstance() for this
On Oct 29, 8:53 am, rantingrick wrote:
> I am the programmer, and when i say to my interpretor "show this
> exception instead of that exception" i expect my interpretor to do
> exactly as i say or risk total annihilation!! I don't want my
> interpreter "interpreting" my intentions and then doing
Hi Chris,
I may have time to look at the rest of your code later. For now I
just want to comment on one line:
On Nov 7, 12:24 pm, chris wrote:
> elem=['a','b','c'][i]
The string type, just like the list type, is a sequence type. So
strings have all the standard sequence methods. You coul
On Nov 1, 7:30 pm, Lawrence D'Oliveiro wrote:
> In message <20101021235138.609fe...@geekmail.invalid>, Andreas Waldenburger
> wrote:
>
> > While not very commonly needed, why should a shared default argument be
> > forbidden?
>
> Because it’s safer to disallow it than to allow it.
That's why Java
On Monday, May 15, 2017 at 10:23:12 PM UTC-7, qasi...@gmail.com wrote:
> @Cameron:
> Thanks, I will try what you suggest. I am not sure that I'll tackle it
> because I am new to python.
I teach programming to people with varying levels of expertise, from
middle-school students to working profess
On Monday, May 15, 2017 at 7:23:52 PM UTC-7, jeanbi...@gmail.com wrote:
> What may make this tricky is that the vinyl group can rotate at the point
> where it attaches to the benzene ring so the full molecule may not lie in a
> plane.
But the OP has coordinates for each atom which are used in th
On Thursday, May 18, 2017 at 3:55:01 AM UTC-7, qasi...@gmail.com wrote:
> @jladasky and @Gregory:
>
> 3) Divide the ligand molecule into two parts (except for ligand heavy atom
> closest to the COM of the whole ligand) based on the COM previously
> calculated.
OK, now I agree with Gregory Ewin
On Saturday, June 24, 2017 at 12:07:05 PM UTC-7, Rod Person wrote:
> Hi,
>
> I'm working on a program that will walk a file system and clean the id3
> tags of mp3 and flac files, everything is working great until the
> follow file is found
>
> '06 - Todd's Song (Post-Spiderland Song in Progress).
On Tuesday, June 27, 2017 at 9:24:07 AM UTC-7, Sam Chats wrote:
> https://medium.com/technology-invention-and-more/how-to-build-a-simple-neural-network-in-9-lines-of-python-code-cc8f23647ca1
OK, that's cheating a bit, using Numpy. It's a nice little program, but it
leverages a huge, powerful lib
On Tuesday, June 27, 2017 at 12:34:46 PM UTC-7, Marko Rauhamaa wrote:
> John Ladasky :
> > OK, that's cheating a bit, using Numpy. It's a nice little program,
> > but it leverages a huge, powerful library.
>
> What would *not* be cheating? A language without a lib
On Tuesday, June 27, 2017 at 7:28:58 PM UTC-7, Steve D'Aprano wrote:
> On Wed, 28 Jun 2017 06:22 am, Marko Rauhamaa wrote:
>
> > You saw the APL example, right? APL's standard runtime/library contains
> > most of Numpy functionality because that's what APL has been designed
> > for.
> >
> > Is th
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