Does anyone know how to get support for tiff/pbm in pyplot on
Ubuntu (11.04)?
This used to work for me, on some system, but when I attempt
to regenerate my TIFF files on a new system, it all crashes.
The error message is clear; TIFF and PBM are not supported, and
the exception occurs in a call
On 20 May 2011 06:55:35 GMT, Steven D'Aprano
steve+comp.lang.pyt...@pearwood.info wrote:
: On Thu, 19 May 2011 22:13:14 -0700, rusi wrote:
:
: [I agree with you Xah that recursion is a technical word that should not
: be foisted onto lay users.]
:
: I think that is a patronizing remark
On 20 May 2011 07:04:27 GMT, Steven D'Aprano
steve+comp.lang.pyt...@pearwood.info wrote:
: On Fri, 20 May 2011 05:48:50 +0100, Hans Georg Schaathun wrote:
:
: Either way, the assumption that your system will not be handled by
: idiots is only reasonable if you yourself is the only user
On 19 May 2011 08:47:28 GMT, Steven D'Aprano
steve+comp.lang.pyt...@pearwood.info wrote:
: The real barrier to cracking Oyster cards is not that the source code is
: unavailable, but that the intersection of the set of those who know how
: to break encryption, and the set of those who want
On Thu, 19 May 2011 10:23:47 -0700, geremy condra
debat...@gmail.com wrote:
: Let me get this straight: your argument is that operating *systems*
: aren't systems?
You referred to the kernel and not the system. The complexities of
the two are hardly comparable.
There probably are different
On Thu, 19 May 2011 17:56:12 -0700, geremy condra
debat...@gmail.com wrote:
: TL;DR version: large systems have indeed been verified for their
: security properties.
: (...)
: Yup. Nothing is safe from idiots.
The difficult part is mapping those properties to actual requirements
and threat
On Thu, 19 May 2011 23:21:30 +0200, Rikishi42
skunkwo...@rikishi42.net wrote:
: On 2011-05-18, Hans Georg Schaathun h...@schaathun.net wrote:
: Now Mac OS X has maintained the folder concept of older mac generations,
: and Windows has cloned it. They do not want the user to understand
On Mon, 16 May 2011 23:42:40 +0100, Rhodri James
rho...@wildebst.demon.co.uk wrote:
: ...which is, of course, not exactly secure either. A sufficiently
: determined hacker won't have much trouble disassembling a shared library
: even if you do strip out all the debug information. By
On Tue, 17 May 2011 15:26:42 -0700 (PDT), Xah Lee
xah...@gmail.com wrote:
: If you look at Windows or Mac OS X world, i don't think they ever
: refer to dealing with whole dir as “recursive” in user interface.
That's purely due to a difference in the level of abstraction.
Mac OS introduced
[Followup-To: header set to comp.lang.python.]
On 17 May 2011 23:42:20 -0700, Thomas A. Russ
t...@sevak.isi.edu wrote:
: Tree walks are the canonical example of what can't be done in an
: iterative fashion without the addition of an explicitly managed stack
Of course you can do it. It isn't
On Wed, 18 May 2011 09:54:30 -0700, geremy condra
debat...@gmail.com wrote:
: On Wed, May 18, 2011 at 12:36 AM, Hans Georg Schaathun h...@schaathun.net
wrote:
: But then, nothing is secure in any absolute sense.
:
: If you're talking security and not philosophy, there is such a thing
[Followup-To: header set to comp.lang.python.]
On 18 May 2011 09:16:26 -0700, Thomas A. Russ
t...@sevak.isi.edu wrote:
: Well, unless you have a tree with backpointers, you have to keep the
: entire parent chain of nodes visited. Otherwise, you won't be able to
: find the parent node when
[Followup-To: header set to comp.lang.python.]
On Wed, 18 May 2011 20:20:01 +0200, Raymond Wiker
raw@RAWMBP-2.local wrote:
: I don't think anybody mentioned *binary* trees. The context was
: directory traversal, in which case you would have nodes with an
: arbitrary (almost) number of
On Wed, 18 May 2011 12:07:49 -0700, geremy condra
debat...@gmail.com wrote:
: I was playing around with an HSM the other day that had originally
: targeted FIPS 140-3 level 5, complete with formal verification models
: and active side-channel countermeasures. I'm quite confident that it
:
[Followup-To: header set to comp.lang.python.]
On Wed, 18 May 2011 21:09:15 +0200, Raymond Wiker
raw@RAWMBP-2.local wrote:
: In the sense that the tree itself is a stack, yes. But if we
: consider the tree (or one of its branches) to be a stack, then
: the original claim becomes a tautology.
[Followup-To: header set to comp.lang.python.]
On Wed, 18 May 2011 22:40:28 +0200, Raymond Wiker
raw@RAWMBP-2.local wrote:
: I said tree operations, not tree walks. A tree operation might
: involve several tree walks.
OK. The original claim under dispute regarded tree walks.
:
On Wed, 18 May 2011 14:34:46 -0700, geremy condra
debat...@gmail.com wrote:
: Systems can be designed that are absolutely secure under reasonable
: assumptions. The fact that it has assumptions does not make your
: statement true.
: (...)
: I can't tell if you're trying to play word games
On Thu, 12 May 2011 23:20:20 +1000, Chris Angelico
ros...@gmail.com wrote:
: Writing a program requires expertise both in programming and in the
: purpose for which it's being written. Ultimately, a programmer is a
: translator; without proper comprehension of the material he's
:
On 11 May 2011 21:47:27 GMT, Steven D'Aprano
steve+comp.lang.pyt...@pearwood.info wrote:
: On Wed, 11 May 2011 20:13:35 +0100, Hans Georg Schaathun wrote:
: One principle of object oriented programming is to bestow the objects
: with properties reflecting known properties from the domain
On Wed, 11 May 2011 20:16:01 -0700 (PDT), alex23
wuwe...@gmail.com wrote:
: Hans Georg Schaathun h...@schaathun.net wrote:
: Revolutionary indeed, so why don't we exploit the revolution
: and write the programs to be as accessible as possible?
:
: Where do you draw the line, though?
I said
On Thu, 12 May 2011 17:44:07 +1200, Gregory Ewing
greg.ew...@canterbury.ac.nz wrote:
: Roy Smith wrote:
: Hans Georg Schaathun h...@schaathun.net wrote:
: If both are numbers, they are converted to a common type. Otherwise,
: objects of different types always compare unequal
Actually, I did
On Thu, 12 May 2011 01:49:05 -0400, D'Arcy J.M. Cain
da...@druid.net wrote:
: That's not programming. That's using a canned app that a programmer
: wrote that takes your unstructured input and does something useful with
: it. Spreadsheets are a primitive example of that. Google is a more
:
On 11 May 2011 21:42:10 GMT, Steven D'Aprano
steve+comp.lang.pyt...@pearwood.info wrote:
: *Potentially* different tests. Which is exactly the point. Given an
: arbitrary object, the developer doesn't know what test is appropriate.
: Should I write len(x) == 0 or list(x) == [] or x.next is
On Wed, 11 May 2011 20:31:45 -0700 (PDT), alex23
wuwe...@gmail.com wrote:
: On May 12, 7:24 am, harrismh777 harrismh...@charter.net wrote:
: We need to move away from 'canned apps' to a new day where
: the masses can sit down to their computer and solve new problems with it
: through
On Thu, 12 May 2011 16:46:38 +1000, Ben Finney
ben+pyt...@benfinney.id.au wrote:
: Hans Georg Schaathun h...@schaathun.net writes:
:
: On Wed, 11 May 2011 20:31:45 -0700 (PDT), alex23
:wuwe...@gmail.com wrote:
: : On May 12, 7:24 am, harrismh777 harrismh...@charter.net wrote:
: : We
On Thu, 12 May 2011 22:16:10 +1000, Chris Angelico
ros...@gmail.com wrote:
: Anyone can join. Not everyone wants to join. Me, I'm happy here as a
: priest of the software industry, and I have no desire to become a
: priest of, say, automotive engineering or concrete pouring. Would an
:
On 07 May 2011 02:51:50 GMT, Steven D'Aprano
steve+comp.lang.pyt...@pearwood.info wrote:
: On Fri, 06 May 2011 14:57:21 -0700, scattered wrote:
:
: is there any problem with
:
: (3) if li == []:
:
: ?
:
: Seems to work when I test it and seems to clearly test what you are
: trying
On 07 May 2011 02:49:53 GMT, Steven D'Aprano
steve+comp.lang.pyt...@pearwood.info wrote:
: On Fri, 06 May 2011 16:05:09 -0400, Adam Tauno Williams wrote:
:
: I'd never accept code like if not x as an empty test.
:
: So much the worse for you then.
:
: The point of the if x idiom is that
On Sat, 07 May 2011 21:57:13 -0700, Ethan Furman
et...@stoneleaf.us wrote:
: If you're going to use a language, and use it well, you have to learn
: how that language works.
And if the world evolves around the compiler and you, that advice
suffices.
However, programming is often as much
On 11 May 2011 13:36:02 GMT, Steven D'Aprano
steve+comp.lang.pyt...@pearwood.info wrote:
: In this case, the interpretation of an arbitrary object as a boolean is
: peculiar for python.
:
: Incorrect. It is widespread among many languages. Programmers have been
: writing conditional
On 11 May 2011 12:14:46 GMT, Steven D'Aprano
steve+comp.lang.pyt...@pearwood.info wrote:
: Not knowing that you can write if x instead of if x == [] is like not
: knowing that you can write
:
: elif condition
:
: instead of
:
: else:
: if condition
My concern was
On 11 May 2011 13:45:52 GMT, Steven D'Aprano
steve+comp.lang.pyt...@pearwood.info wrote:
: Do you think that we should avoid chained comparisons, class methods,
: closures, co-routines, decorators, default values to functions,
: delegation, doc tests, exceptions, factory functions,
On Wed, 11 May 2011 10:33:51 -0400, D'Arcy J.M. Cain
da...@druid.net wrote:
: Non-programmers should be able to program?
That was not really what I suggested; I was primarily talking
about reading programs and commenting on formulæ and algorithms.
: Should non-doctors be able to doctor?
If
On 11 May 2011 16:26:40 GMT, Steven D'Aprano
steve+comp.lang.pyt...@pearwood.info wrote:
: 1. My concern was not about clueless newbies. They need to
:learn. My concern is about experienced scientists and engineers who
:are simply new to python.
:
: Which makes them clueless newbies
On Thu, 12 May 2011 02:05:21 +1000, Chris Angelico
ros...@gmail.com wrote:
: In a Bourne shell script, if ends with fi... case ends with esac... so
: file would end with... hmm. Yeah, I think it's best to know the
: language you're trying to comprehend, and/or actually look at context
:
On Wed, 11 May 2011 10:27:49 -0400, D'Arcy J.M. Cain
da...@druid.net wrote:
: When did we come to the idea that people should be able to program in a
: language without actually learning it? The fact that Python comes so
: close to that possibility is nothing short of revolutionary.
On Wed, 11 May 2011 10:31:59 -0600, Ian Kelly
ian.g.ke...@gmail.com wrote:
: (x + 3 for x in xs if x % 2 == 1)
Interesting. Thanks. That might come in handy some time.
--
:-- Hans Georg
--
http://mail.python.org/mailman/listinfo/python-list
On Wed, 11 May 2011 13:50:54 -0400, Prasad, Ramit
ramit.pra...@jpmchase.com wrote:
: I find this argument to be flawed. Should I stop using built-in
: generators instead of range/xrange for looping through lists?
: Certainly for loops with loop counting are understood more widely
: than
On Wed, 11 May 2011 14:59:34 -0400, Prasad, Ramit
ramit.pra...@jpmchase.com wrote:
: Fair enough. I am a sheep, so I do what other (more knowledgeable)
: people do. It is a fair assumption (for my specific code writing
: environments) that everyone who is going to read my code understands
:
On Wed, 11 May 2011 12:17:33 -0700, Ethan Furman
et...@stoneleaf.us wrote:
: 'if li' *is* KISS.
It /might/ be in some contexts, but a priori it is not, as it
superimposes a truth value on a data type which is otherwise
a pretty accurate model of real objects (outside python).
One principle of
On Wed, 11 May 2011 14:44:37 -0400, Prasad, Ramit
ramit.pra...@jpmchase.com wrote:
: Someone who knows how to program is never clueless starting a new
: language. Newbie, may be, but he knows most of the constructions
: and semantic principles to look for; most of it is learning the syntax.
:
On Tue, 10 May 2011 07:36:42 -0400, Adam Tauno Williams
awill...@whitemice.org wrote:
: On Mon, 2011-05-09 at 19:40 -0500, Kyle T. Jones wrote:
: It has been hard for me to determine what would constitute overuse.
:
: The chronic problem is under use; so I wouldn't worry much about it.
:
:
On Tue, 10 May 2011 14:05:34 + (UTC), Grant Edwards
invalid@invalid.invalid wrote:
: Because it's easier to communicate if everybody agrees on what a word
: means.
Why should we agree on that particular word? Are there any other words
we agree about? Other key words, such as class,
On Wed, 11 May 2011 01:27:36 +1000, Chris Angelico
ros...@gmail.com wrote:
: Language is for communication. If we're not using the same meanings
: for words, we will have problems.
So if you adopt the word class to mean a type (or composite type),
as in python, what word would you use for a
On Sun, 8 May 2011 03:44:06 -0700 (PDT), pb
peterthe...@yahoo.com wrote:
: I', having trouble with scipy. I have followed the instructions at
: scipy website and have installed the following on my mac osx 10.6.6
: (...)
: I'm assuming I have the wrong version of something, would that be
:
On Tue, 3 May 2011 18:08:27 -0400, Jabba Laci
jabba.l...@gmail.com wrote:
: I'm just reading Robert M. Martin's book entitled Clean Code. In Ch.
: 5 he says that a function that is called should be below a function
: that does the calling. This creates a nice flow down from top to
: bottom.
On Sat, 07 May 2011 21:21:45 +1200, Gregory Ewing
greg.ew...@canterbury.ac.nz wrote:
: You can manipulate them just fine by moving them
: from one place to another:
:
: a = b
:
: You can use them to get at stuff they refer to:
:
: a = b.c
: a[:] = b[:]
Surely you can refer
On Mon, 09 May 2011 12:52:27 +1200, Gregory Ewing
greg.ew...@canterbury.ac.nz wrote:
: Let me save you from guessing. I'm thinking of a piece of paper with
: a little box on it and the name 'a' written beside it. There is an
: arrow from that box to a bigger box.
:
:
On Mon, 9 May 2011 21:18:29 +1000, Chris Angelico
ros...@gmail.com wrote:
: Analogies are like diagrams. Not all of them are perfect or useful.
:
: The boxes are different sizes. If you really want them to look
: different, do one as squares and one as circles, but don't try that in
: plain
On Wed, 04 May 2011 16:49:25 -0500, harrismh777
harrismh...@charter.net wrote:
: Folks seem to think that because they are doing abstraction at a
: high-level (well, they never maybe programmed at a lower level) that
: abstraction somehow 'requires' a high level language. (not true)
I
On Wed, 04 May 2011 20:11:02 -0500, harrismh777
harrismh...@charter.net wrote:
: A reference is a pointer (an address).
:
: A value is memory (not an address).
Sure, and pointers (from a hardware or C perspective) are memory,
hence pointers are values.
--
:-- Hans Georg
--
On Thu, 05 May 2011 20:55:36 +1200, Gregory Ewing
greg.ew...@canterbury.ac.nz wrote:
: It's not clear to me that references are any more abstract
: than objects, or to put it another way, that objects are
: any less abstract than references.
:
: After all, in normal Python usage you never
On Wed, 4 May 2011 02:56:28 -0700 (PDT), Devin Jeanpierre
jeanpierr...@gmail.com wrote:
: Eh, that example doesn't say what you think it does. It has the same
: behavior in C: http://ideone.com/Fq09N . Python is pass-by-value in a
: meaningful sense, it's just that by saying that we say that
On Wed, 4 May 2011 06:12:14 -0700 (PDT), Devin Jeanpierre
jeanpierr...@gmail.com wrote:
: I don't think of pass-by-value involving references as being an
: implementation-level thing. It's a way of thinking about Python's
: behavior: a model. (...)
: It isn't particularly contorted. I
On Wed, 4 May 2011 09:18:56 -0700 (PDT), Devin Jeanpierre
jeanpierr...@gmail.com wrote:
: I'm a bit uncomfortable with the vibe here. It's one thing for me to
: self-deprecatingly suggest I'm brainwashed (with a smile), and another
: for you to agree in complete seriousness.
I am sorry. It
On Thu, 5 May 2011 00:20:34 +1000, Chris Angelico
ros...@gmail.com wrote:
: Sometimes, to explain Python, you need to dig down to the underlying
: hardware - even deeper than C, if you like.
Sometimes you may need to narrow down the scope and explain a particular
implementation of python with
On Wed, 04 May 2011 14:22:38 -0500, harrismh777
harrismh...@charter.net wrote:
: That statement is untrue; evidenced by the very fact the CPython's
: complex and abstract data modeling has been very suitably handled by C.
That's an implementation. Not modelling.
: You cannot
On Wed, 04 May 2011 14:33:34 -0500, harrismh777
harrismh...@charter.net wrote:
: Hans Georg Schaathun wrote:
: In C it is pass by value, as the pointer
: is explicit and do whatever you want with the pointer value.
:
: You clearly are not a C programmer.
I am not really a programmer period
On Wed, 04 May 2011 14:58:38 -0500, harrismh777
harrismh...@charter.net wrote:
: True enough. If I used Jython, I would want to take a look at those
: sources... as well as the Java sources... which were wrtten in, um, C.
And then, suddenly, you'll be developing code which fails on
On Thu, 05 May 2011 15:48:51 +1200, Gregory Ewing
greg.ew...@canterbury.ac.nz wrote:
: No, it's not. With call-by-name, the caller passes a
: small function (known as a thunk) that calculates the
: address of the parameter. Every time the callee needs to
: refer to the parameter, it
On 03 May 2011 00:21:45 GMT, Steven D'Aprano
steve+comp.lang.pyt...@pearwood.info wrote:
: Python aims at acceptable performance (between 10 and 100 times slower
: than C) and much easier development (between 10 and 100 times faster than
: C *wink*). If that tradeoff doesn't suit you,
On Tue, 3 May 2011 07:56:26 +1000, Chris Angelico
ros...@gmail.com wrote:
: often recursively. The compiler should generate code the way the CPU
: thinks (most optimally), i.e. iteratively.
:
: The CPU can function iteratively or recursively.
I should have said 'hardware' rather than CPU.
On 01 May 2011 08:45:51 GMT, Steven D'Aprano
steve+comp.lang.pyt...@pearwood.info wrote:
: Python uses a data model of name binding and call by object (also
: known as call by sharing). I trust I don't need to define my terms, but
: just in case:
Without having the time to get my hand
On Tue, 03 May 2011 12:33:15 -0400, Mel
mwil...@the-wire.com wrote:
: mwilson@tecumseth:~$ python
: Python 2.6.5 (r265:79063, Apr 16 2010, 13:09:56)
: [GCC 4.4.3] on linux2
: Type help, copyright, credits or license for more information.
: def identify_call (a_list):
: ... a_list[0] =
On 03 May 2011 15:20:42 GMT, Steven D'Aprano
steve+comp.lang.pyt...@pearwood.info wrote:
: You get credit for not falling into the trap of thinking there are only
: two, call by reference and call by value, but there are *many* more than
: just three. Wikipedia lists at least 13:
Ah.
On Mon, 2 May 2011 06:49:41 +1000, Chris Angelico
ros...@gmail.com wrote:
: Sure. Serialize this Python object in a way that can be given to, say, PHP:
: foo={asdf:qwer,zxcv:1234}; foo[self]=[1,2,3,foo]
: Recurse from self into the list, recurse from there into a
: dictionary... Okay, that's
On 02 May 2011 01:09:21 GMT, Steven D'Aprano
steve+comp.lang.pyt...@pearwood.info wrote:
: Ah, I see where you're coming from now! You think I'm arguing *against*
: the use of recursion. Not at all. Earlier in this thread, I said:
Fair enough. Somebody said something about recursion mainly
On 02 May 2011 08:56:57 GMT, Steven D'Aprano
steve+comp.lang.pyt...@pearwood.info wrote:
: I see your smiley, but there are a number of similar series as Fibonacci,
: with the same recurrence but different starting values, or similar but
: slightly different recurrences. E.g. Lucas,
On Sun, 01 May 2011 18:24:30 -0400, Terry Reedy
tjre...@udel.edu wrote:
: This does not make linear recursion 'bad', just impractical for general
: use on finite-memory machines. While I consider it very useful for
: learning, it is unnecessary because it is easy to write an iterative
:
On 02 May 2011 16:41:37 GMT, Steven D'Aprano
steve+comp.lang.pyt...@pearwood.info wrote:
: You must be new to the Internet then :)
OK. Maybe I heard something worse last time I was an active news users,
years ago.
Anyway, most of the silly things I hear do not qualify as arguments :-)
:
On Sat, 30 Apr 2011 15:40:24 +0100, Paul Rudin
paul.nos...@rudin.co.uk wrote:
: Anytime you have enough data... there are plenty of things that are natural
to
: represent as recursive data structures, and often you don't know in
: advance how much data your code is going to have to deal
On 01 May 2011 09:04:27 GMT, Steven D'Aprano
steve+comp.lang.pyt...@pearwood.info wrote:
: Why? You might have 4000 MB of main memory, and only 2 MB (say?) of call
: stack allocated. The call stack can't grow indefinitely. If it does, you
: get a stack overflow:
Of course you do, but you
On 01 May 2011 11:56:57 GMT, Steven D'Aprano
steve+comp.lang.pyt...@pearwood.info wrote:
: Just google on stack overflow crash.
And I get loads of examples of stack overflows, but I could not see
anybody linking this to logically correct recursion. Wikipedia, for
instance, mentions two common
On Fri, 29 Apr 2011 23:45:30 -0500, harrismh777
harrismh...@charter.net wrote:
: There is much debate about this generally, but general wisdom is that
: recursion is to be avoided when possible.
That is context dependent at best. You have given reasons to avoid
recursion in /executable
On Fri, 29 Apr 2011 20:21:58 -0700 (PDT), CM
cmpyt...@gmail.com wrote:
: While we're on the topic, when should a lone developer bother to start
: using
: a VCS? At what point in the complexity of a project (say a hobby
: project, but
: a somewhat seriousish one, around ~5-9k LOC) is the
On Sat, 30 Apr 2011 06:43:42 +0100, Paul Rudin
paul.nos...@rudin.co.uk wrote:
: Writing recurive code is acceptable and is a nice clear way of
: expressing things when you have naturally recursive data structures, and
: can lead to perfectly good compiled code. The problem in CPython is the
:
On Sat, 30 Apr 2011 12:29:00 +0100, Paul Rudin
paul.nos...@rudin.co.uk wrote:
: Clearly it makes a difference in any case where you'd hit the recursion
: limit.
What kind of problems make you hit the limit?
Other than when you forget the base case, I mean.
: It's no big deal to do
Hmmm. I am still using svn.
How easy and reliable is it to import my svn version history into
one of the three big DVCS-s mentioned here?
I am fairly happy with svn, but then I use it more as a backup system
and a means to synchronise multiple systems. Something better would
not hurt, but
On Fri, 29 Apr 2011 06:50:52 -0500, Tim Chase
python.l...@tim.thechases.com wrote:
: I'd say that one of the things SVN has going for it is that it's
: the lingua-franca of VCSes, so just about everything (especially
: the 3 big names mentioned in this thread: hg, bzr, git) can talk
: to
On Wed, 27 Apr 2011 14:24:30 +0200, Jean-Michel Pichavant
jeanmic...@sequans.com wrote:
: I was talking about merge *issue* i.e merge resulting in conflicts that
: are not easy to solve. With a single user most of the merge will be
: solved automatically by any decent VCS.
Exactly, and
On Tue, 26 Apr 2011 14:31:59 -0700, geremy condra
debat...@gmail.com wrote:
: Without knowledge of what you're doing it's hard to comment
: intelligently,
I need to calculate map( foobar, L ) where foobar() is a pure function
with no dependency on the global state, L is a list of tuples,
On Tue, 26 Apr 2011 23:54:24 -0700, geremy condra
debat...@gmail.com wrote:
: This sounds like a hadoop job, with the caveat that you still have to
: get your objects across the network somehow. Have you tried xdrlib or
: the struct module? I suspect either would save you some time.
Packing
On Wed, 27 Apr 2011 11:35:16 +0200, Thomas Rachel
nutznetz-0c1b6768-bfa9-48d5-a470-7603bd3aa...@spamschutz.glglgl.de wrote:
: As far as I understand, you acquire a job, send it to a remote host via
: a socket and then wait for the answer. Is that correct?
That's correct. And the client
On Wed, 27 Apr 2011 23:35:06 +1000, Chris Angelico
ros...@gmail.com wrote:
: On Wed, Apr 27, 2011 at 10:21 PM, Hans Georg Schaathun
: h...@schaathun.net wrote:
: That's correct. And the client initiates the connection. At the
: moment, I use one thread per connection, and don't
On Thu, 28 Apr 2011 00:58:22 +1000, Chris Angelico
ros...@gmail.com wrote:
: thousand threads? a couple of million? In Python, it'll probably end
: up pretty similar; chances are you won't be taking much advantage of
: multiple CPUs/cores (because the threads will all be waiting for
: socket
I wonder if anyone has any experience with this ...
I try to set up a simple client-server system to do some number
crunching, using a simple ad hoc protocol over TCP/IP. I use
two Queue objects on the server side to manage the input and the output
of the client process. A basic system running
On Wed, 27 Apr 2011 04:30:01 +1000, Algis Kabaila
akaba...@pcug.org.au wrote:
: I would prefer that to using a ready made module, as it would
: be quicker than learning about the module, OTH, learning about
: a module may be useful for other problems. A standard dilema...
More
On Tue, Apr 26, 2011 at 1:20 PM, Chris Angelico ros...@gmail.com wrote:
But question: Why are you doing major number crunching in Python? On
your quad-core machine, recode in C and see if you can do the whole
job without bothering the unreliable boxen at all.
The reason is very simple. I
On Tue, 26 Apr 2011 13:37:40 -0700, Ethan Furman
et...@stoneleaf.us wrote:
: Hans Georg Schaathun wrote:
: List comprehension is understood even by readers with no experience
: with python.
:
: There's nothing magically understandable about a list comp -- the first
: time I saw one (which
On Fri, 22 Apr 2011 12:19:56 -0700 (PDT), sturlamolden
sturlamol...@yahoo.no wrote:
: To optimise computational code, notice that Python itself
: gives you a 200x performance penalty. That is much more
: important than not using all 4 cores on a quadcore processor.
: In this case, start by
Is there a simple way to find the external interface and bind a
socket to it, when the hostname returned by socket.gethostname()
maps to localhost?
What seems to be the standard ubuntu configuration lists the local
hostname with 127.0.0.1 in /etc/hosts. (I checked this on two ubuntu
boxen, on
On Tue, 26 Apr 2011 05:49:07 +1000, Chris Angelico
ros...@gmail.com wrote:
: You can run 'ifconfig' without being root, so there must be a way. At
: very worst, parse ifconfig's output.
Of course, but I am not sure that's simpler than the manual solution.
Especially since there is more than
On Mon, 25 Apr 2011 21:14:51 +0100, Hans Georg Schaathun
h...@schaathun.net wrote:
: : The way you talk of the external interface, I'm assuming this
: : computer has only one. Is there a reason for not simply binding to
: : INADDR_ANY aka 0.0.0.0?
:
: Ah. That's what I really wanted
On Mon, 25 Apr 2011 23:18:05 +0200, Thomas Rachel
nutznetz-0c1b6768-bfa9-48d5-a470-7603bd3aa...@spamschutz.glglgl.de wrote:
: That is right, but I cannot see where he mentions the direction of the
: socket. My fist thought was that he tries to have a server socket...
Quite right. I thought
On Fri, 8 Apr 2011 12:58:34 -0400, Tim Arnold
tim.arn...@sas.com wrote:
: If you already know LaTeX, you might experiment with the *.dtx docstrip
: capability.
Hi. Hmmm. That's a new thought. I never thought of using docstrip
with anything but LaTeX. It sounds like a rather primitive
On Sat, 9 Apr 2011 03:45:55 -0700 (PDT), Jim
jim.heffe...@gmail.com wrote:
: I'm sorry; I don't understand commenting code within a block but I
: wondered if it meant you were not fully familiar with the idea of the
: web-type programs.
The idea was pretty clear from the web page you cited.
On Sat, 9 Apr 2011 01:32:17 +1000, Chris Angelico
ros...@gmail.com wrote:
: On Sat, Apr 9, 2011 at 1:21 AM, km srikrishnamo...@gmail.com wrote:
: How does python 3.2 fare compared to Java 1.6 in terms of performance ?
: any pointers or observations ?
:
: How do apples compare to oranges in
On Thu, 07 Apr 2011 16:21:52 -0500, Robert Kern
robert.k...@gmail.com wrote:
: http://sphinx.pocoo.org/markup/code.html
:
: As far as I can tell, it just works. See here for an example:
:
: http://ipython.scipy.org/doc/nightly/html/interactive/reference.html
Maybe I did not express myself
On Fri, 8 Apr 2011 05:22:01 -0700 (PDT), Jim
jim.heffe...@gmail.com wrote:
: On Apr 7, 2:09 pm, Hans Georg Schaathun h...@schaathun.net wrote:
: Has anyone found a good system for literate programming in python?
:
: Are you aware of pyweb http://sourceforge.net/projects/pywebtool
Has anyone found a good system for literate programming in python?
I have been trying to use pylit/sphinx/pdflatex to generate
technical documentation. The application is scientific/numerical
programming, so discussing maths in maths syntax in between
python syntax is important.
While I like
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