* Steven D'Aprano:
On Wed, 13 Jan 2010 06:55:27 +0100, Alf P. Steinbach wrote:
* Steven D'Aprano:
On Tue, 12 Jan 2010 23:47:31 +0100, Alf P. Steinbach wrote:
PS: Next time it would have helped to include a URL to the issue.
http://bugs.python.org/issue7681
FYI there
* Steven D'Aprano:
Nobody is trying to understate the complexity of writing a large
application that supports both 2.6 and 3.x, or of taking an existing
library written for 2.5 and upgrading it to support 3.1. But the
magnitude of these tasks is no greater (and potentially smaller) than
supp
* Stefan Behnel:
Alf P. Steinbach, 13.01.2010 06:55:
* Steven D'Aprano:
I think you need to chill out and stop treating a simple bug report
as a personal slight on you.
I'm sorry but you're again trying to make people believe something
that you know is false, which is common
* Stefan Behnel:
Alf P. Steinbach, 13.01.2010 06:39:
* Steven D'Aprano:
On Tue, 12 Jan 2010 23:42:28 +0100, Alf P. Steinbach wrote:
It is hopeless, especially for a newbie, to create correct Python
2.x+3.x compatible code, except totally trivial stuff of course.
So you allege, but
* Terry Reedy:
On 1/12/2010 6:31 PM, Alf P. Steinbach wrote:
Perhaps change to CAPTCHA instead of mail confirmation.
I disagree. The point of mail confirmation is not just to assure that a
human is registering, but that we have a valid email for responses to be
sent to. Many issues are
* Steven D'Aprano:
On Tue, 12 Jan 2010 23:47:31 +0100, Alf P. Steinbach wrote:
PS: Next time it would have helped to include a URL to the issue.
http://bugs.python.org/issue7681
FYI there is already some feedback in the tracker.
Yeah, someone who had the bright idea that maybe
* Steven D'Aprano:
On Tue, 12 Jan 2010 23:42:28 +0100, Alf P. Steinbach wrote:
* André:
On Jan 12, 9:33 am, "Alf P. Steinbach" wrote:
Well, this is for my Python (actually, beginning programmer) writings,
at
http://tinyurl.com/programmingbookP3
Thanks for writing thi
* Steve Holden:
Alf P. Steinbach wrote:
* Steve Holden:
[...]
FYI there is already some feedback in the tracker.
Yeah, someone who had the bright idea that maybe there isn't a bug,
thinking instead that maybe a "wrong" name in *a comment* might be the
culprit -- of all
* Steve Holden:
Alf P. Steinbach wrote:
If you have any suggestions for improving things (and the same goes for
any other readers) I will be happy to listen to them. I do agree that
the bug tracker is a rather high hurdle for people to have to jump over
just to offer feedback on software faults
* Steve Holden:
Alf P. Steinbach wrote:
* Stefan Behnel:
Alf P. Steinbach, 12.01.2010 12:51:
Well how f*g darn patient do they expect me to be?
I've decided: I'm not.
Oh sh**, just as I typed the period above the mail finally arrived.
It's been, let's see, about 20+
* André:
On Jan 12, 9:33 am, "Alf P. Steinbach" wrote:
Well, this is for my Python (actually, beginning programmer) writings, at
http://tinyurl.com/programmingbookP3
Thanks for writing this book. I just had a quick look at the
beginning of it where you write:
===
As of th
W. eWatson wrote:
>>> now = datetime.datetime.now()
>>> fractional_hour = now.hour + now.minute / 60.0
See my post about the datetime controversy about 3-4 posts up from yours.
If timezones might be a problem area, than it might be worth while to
see it in the context of the actual applic
* Stefan Behnel:
Alf P. Steinbach, 12.01.2010 13:10:
* Stefan Behnel:
Maybe you should just stop using the module. Writing the code
yourself is certainly going to be faster than reporting that bug,
don't you think?
It's part of the standard Python distribution.
Don't you th
* Stefan Behnel:
Alf P. Steinbach, 12.01.2010 12:51:
Well how f*g darn patient do they expect me to be?
I've decided: I'm not.
Oh sh**, just as I typed the period above the mail finally arrived.
It's been, let's see, about 20+ minutes!
And still some miles to go.
* Alf P. Steinbach:
* Steve Holden:
Alf P. Steinbach wrote:
[...]
PS: It would be nice if someone(TM) could describe here in detail how to
properly report errors like this. Of course I'm not going to do it if it
involves establishing Yet Another Account somewhere. But hopefully it
do
* Steve Holden:
Alf P. Steinbach wrote:
[...]
PS: It would be nice if someone(TM) could describe here in detail how to
properly report errors like this. Of course I'm not going to do it if it
involves establishing Yet Another Account somewhere. But hopefully it
doesn't?
That's
Argh! This was really annoying! Much time wasted (one naturally thinks that
silly error must be one's own).
But, anyway:
Lines:
244 nitems = (chunk.chunksize - chunk.size_read) / self._sampwidth
464 self._nframes = initlength / (self._nchannels * self._sampwidth)
Need to use Python 3.x
* Steve Holden:
Alf P. Steinbach wrote:
* W. eWatson:
Ben Finney wrote:
"W. eWatson" writes:
See my post about the datetime controversy about 3-4 posts up from
yours.
This forum is distributed, and there's no “up” or “3-4 messages” that is
common for all readers.
Cou
* W. eWatson:
Ben Finney wrote:
"W. eWatson" writes:
See my post about the datetime controversy about 3-4 posts up from
yours.
This forum is distributed, and there's no “up” or “3-4 messages” that is
common for all readers.
Could you give the Message-ID for that message?
Sort of like oute
* suresh.amritapuri:
On Jan 9, 9:51 pm, "Alf P. Steinbach" wrote:
* Lie Ryan:
On 1/9/2010 8:43 AM, suresh.amritapuri wrote:
Hi,
In PIL, how to display multiple images in say m rows and n colums when
I have m*n images.
suresh
Tkinter has PhotoImage widget and PIL has support for t
Martin P. Hellwig wrote:
W. eWatson wrote:
Maybe there's a more elegant way to do this. I want to express the
result of datetime.datetime.now() in fractional hours.
Here's one way.
dt=datetime.datetime.now()
xtup = dt.timetuple()
h = xtup[3]+xtup[4]/60.0+xtup[5]/3600.00+xtup[6]/10
W. eWatson wrote:
Maybe there's a more elegant way to do this. I want to express the
result of datetime.datetime.now() in fractional hours.
Here's one way.
dt=datetime.datetime.now()
xtup = dt.timetuple()
h = xtup[3]+xtup[4]/60.0+xtup[5]/3600.00+xtup[6]/10**6
# now is in fractions of an hour
* Chris Rebert:
On Mon, Jan 11, 2010 at 2:20 AM, Alf P. Steinbach wrote:
* Chris Rebert:
On Mon, Jan 11, 2010 at 1:03 AM, Alf P. Steinbach wrote:
* Steven D'Aprano:
On Mon, 11 Jan 2010 08:56:36 +0100, Alf P. Steinbach wrote:
* Paul Rudin:
Sebastian writes:
Using the term &
* Chris Rebert:
On Mon, Jan 11, 2010 at 1:03 AM, Alf P. Steinbach wrote:
* Steven D'Aprano:
On Mon, 11 Jan 2010 08:56:36 +0100, Alf P. Steinbach wrote:
* Paul Rudin:
Sebastian writes:
I have an array x=[1,2,3]
In python such an object is called a "list".
(In cpython i
* Steven D'Aprano:
On Mon, 11 Jan 2010 08:56:36 +0100, Alf P. Steinbach wrote:
* Paul Rudin:
Sebastian writes:
I have an array x=[1,2,3]
In python such an object is called a "list".
(In cpython it's implemented as an automatically resizable array.)
I don't t
* Paul Rudin:
Sebastian writes:
I have an array x=[1,2,3]
In python such an object is called a "list".
(In cpython it's implemented as an automatically resizable array.)
I don't think the OP's terminology needs correction.
A Python "list" is an array functionality-wise.
If one isn't ob
* Lie Ryan:
On 1/9/2010 8:43 AM, suresh.amritapuri wrote:
Hi,
In PIL, how to display multiple images in say m rows and n colums when
I have m*n images.
suresh
Tkinter has PhotoImage widget and PIL has support for this widget:
http://www.pythonware.com/library/pil/handbook/imagetk.htm
Maybe
* Mensanator:
...because there's no [Options] menu on the shell window?
Or at least give me a clue to how to use Courier New font?
For some inscrutable reason, depite the plethora of formatting tools,
someone decided that proportional spaced fonts ought to be the
default for IDLE.
Why not jus
Wells wrote:
Sorry, this is totally basic, but my Google-fu is failing:
I have a variable foo. I want to instantiate a class based on its
value- how can I do this?
My crystal ball is failing too, could you please elaborate on what
exactly you want to do, some pseudo code with the intended res
Joel Davis wrote:
I'm just curious if anyone knows of a way to get the variable name of
a reference passed to the function.
Put another way, in the example:
def MyFunc ( varPassed ):
print varPassed;
MyFunc(nwVar)
how would I get the string "nwVar" from inside of "MyFunc"? is it
poss
* Steven D'Aprano:
[snip]
The obvious follow-up is to ask how to make an immutable class.
http://northernplanets.blogspot.com/2007/01/immutable-instances-in-python.html
Thanks, I've been wondering about that.
By the way, the link at the bottom in the article you linked to, referring to an
doubt that there are many errors etc., all mine!).
* Alf P. Steinbach, in [comp.lang.python]:
Tentatively titled "Foundations".
Also, these first 2/3 sections may be moved to some later point, i.e.
even the structure is tentative, but I'd value comments!
http://tinyurl.c
* Denis Doria:
I thought in something like:
class A:
def __init__(self, foo = None, bar = None):
set_foo(foo)
self._bar = bar
def set_foo(self, foo):
if len(foo) > 5:
raise
_foo = foo
foo = property(setter = set_foo)
But looks too much
Tentatively titled "Foundations".
Also, these first 2/3 sections may be moved to some later point, i.e. even the
structure is tentative, but I'd value comments!
http://tinyurl.com/programmingbookP3>
Table of contents:
3 Foundations 1
3.1 Some necessary math notation & terminology. 2
3.1.
* Alf P. Steinbach:
* W. eWatson:
When I use numpy.__doc__ in IDLE under Win XP, I get a heap of words
without reasonable line breaks.
"\nNumPy\n=\n\nProvides\n 1. An array object of arbitrary
homogeneous items\n 2. Fast mathematical operations over arrays\n 3.
Linear Al
* W. eWatson:
When I use numpy.__doc__ in IDLE under Win XP, I get a heap of words
without reasonable line breaks.
"\nNumPy\n=\n\nProvides\n 1. An array object of arbitrary
homogeneous items\n 2. Fast mathematical operations over arrays\n 3.
Linear Algebra, Fourier Transforms, Random N
;m writing is /meant/ to be sufficient for unassisted
self study; and of course I think my progression is better, e.g. introducing
loops and decisions very early. However, all those exercises... I wish
Someone(TM) could cook up Really Interesting exercises for my manuscript! :-P
--
http://mail.python.org/mailman/listinfo/python-list
* John Posner:
On Fri, 18 Dec 2009 13:00:48 -0500, Alf P. Steinbach
wrote:
Chapter 2 is about Basic Concepts (of programming). It's the usual:
variables, ...
1. Overall suggestion
You have a tendency to include non-pertinent asides [1]. But then,
rambling a bit endows a manuscript
* Steven D'Aprano:
On Sat, 19 Dec 2009 04:29:22 +0100, Alf P. Steinbach wrote:
* Steven D'Aprano:
On Sat, 19 Dec 2009 01:25:48 +0100, Alf P. Steinbach wrote:
That said, and a bit off-tangent to your comment's main thrust, the
time spent on coding that repeated-division-by
* Steven D'Aprano:
On Sat, 19 Dec 2009 04:04:51 +0100, Alf P. Steinbach wrote:
* Steven D'Aprano:
On Fri, 18 Dec 2009 19:00:48 +0100, Alf P. Steinbach wrote:
In fact almost no Python
code does, but then it seems that people are not aware of how many of
their names are constants
* Mensanator:
That said, and a bit off-tangent to your comment's main thrust, the time spent
on coding that repeated-division-by-2 optimization would, I think, be better
spent googling "Collatz Conjecture" -- avoiding writing /any/ code. ;-)
Ha! I know more about Collatz than you can ever fi
* Dave Angel -> seafoid:
One other point: you should always derive a class from some other
class, or 'object' by default. So you should being the class definition
by:
class Seq(object):
Why? It mainly has to do with super(). But in any case if you omit the
'object' it's an "old style"
* Steven D'Aprano:
On Sat, 19 Dec 2009 01:25:48 +0100, Alf P. Steinbach wrote:
That said, and a bit off-tangent to your comment's main thrust, the time
spent on coding that repeated-division-by-2 optimization would, I think,
be better spent googling "Collatz Conjecture"
* Steven D'Aprano:
On Fri, 18 Dec 2009 19:00:48 +0100, Alf P. Steinbach wrote:
In fact almost no Python
code does, but then it seems that people are not aware of how many of
their names are constants and think that they're uppercasing constants
when in fact they're not. E.g. ro
* Mensanator:
The second deviation is that since most names are constants,
Really? Does that mean you don't use literals, to save the time
required to convert them to integers? Isn't that done at compile
time?
So, instead of doing the Collatz Conjecture as
while a>1:
f = gmpy.scan1(a,0)
i
* Carl Banks:
On Dec 18, 11:08 am, "Alf P. Steinbach" wrote:
* Carl Banks:
On Dec 17, 10:00 pm, Brendan Miller wrote:
On Thu, Dec 17, 2009 at 6:44 PM, Steven D'Aprano
wrote:
On Thu, 17 Dec 2009 12:07:59 -0800, Brendan Miller wrote:
I was thinking it would be cool to m
* Carl Banks:
On Dec 17, 10:00 pm, Brendan Miller wrote:
On Thu, Dec 17, 2009 at 6:44 PM, Steven D'Aprano
wrote:
On Thu, 17 Dec 2009 12:07:59 -0800, Brendan Miller wrote:
I was thinking it would be cool to make python more usable in
programming competitions by giving it its own port of the
I finally finished (draft), I believe!, chapter 2...
Chapter 1 gets the reader up & running, i.e. it's "Hello, world!", basic tool
usage, without discussing anything about programming really. One reaction to
this chapter, based on the two example programs in it, was that it wasn't
gradual and
* Carlos Grohmann:
Hello all
I am testing my code with list comprehensions against for loops.
the loop:
dipList=[float(val[1]) for val in datalist]
dip1=[]
for dp in dipList:
if dp == 90:
dip1.append(dp - 0.01)
else:
dip1.append(dp)
listcomp
mrstevegross wrote:
Ok, I would like to put together a Python/Tkinter dialog box that
displays a simple message and self-destructs after N seconds. Is there
a simple way to do this?
Thanks,
--Steve
Just, thinking aloud, I probably would do something like registering the
[place|grid|pack]_for
* W. eWatson:
See Subject msg from Python 2.5 Win XP. It is preceded by a "Socket
Error". It happened while I had a simple program displayed, and I wanted
to see the shell. The msg occurred when I pressed Shell on Run from the
menu. I played around for awhile, but got nowhere. Same msg. I did
* Mensanator:
On Dec 16, 5:45 pm, "Alf P. Steinbach" wrote:
* Mensanator:
On Dec 16, 4:41 pm, Mensanator wrote:
On Dec 14, 1:23 am, "Alf P. Steinbach" wrote:
* Alf P. Steinbach:
Format: PDF
http://preview.tinyurl.com/ProgrammingBookP3>
The new stuff
* Mensanator:
On Dec 16, 4:41 pm, Mensanator wrote:
On Dec 14, 1:23 am, "Alf P. Steinbach" wrote:
* Alf P. Steinbach:
Format: PDF
http://preview.tinyurl.com/ProgrammingBookP3>
The new stuff, section 2.7, is about programs as simulations and
handling data, focusin
* Alf P. Steinbach:
* Alf P. Steinbach:
Format: PDF
http://preview.tinyurl.com/ProgrammingBookP3>
The new stuff, section 2.7, is about programs as simulations and
handling data, focusing on modeling things. It includes some Python
GUI programming. The plan is to discuss containers l
* Alf P. Steinbach:
Format: PDF
http://preview.tinyurl.com/ProgrammingBookP3>
The new stuff, section 2.7, is about programs as simulations and
handling data, focusing on modeling things. It includes some Python GUI
programming. The plan is to discuss containers like lists
* mattia:
How can I insert non-duplicate data in a list? I mean, is there a
particular option in the creation of a list that permit me not to use
something like:
def append_unique(l, val):
if val not in l:
l.append(val)
How about using a set instead?
>>> a = {1, 2, 3}
>>> a
On Sun, 13 Dec 2009, Victor Subervi wrote:
> On Sun, Dec 13, 2009 at 11:56 AM, Robert P. J. Day
> wrote:
> On Sun, 13 Dec 2009, Victor Subervi wrote:
>
> > On Sun, Dec 13, 2009 at 11:36 AM, Carsten Haese
>
> > wrote:
> >
to expect, how could you
> possibly write code that produces what you expect? (Don't answer
> this question. It's a rhetorical question.)
http://twitter.com/rpjday/status/6576145809
rday
--
====
Robert P. J.
* rm:
On Dec 9, 9:46 pm, "Alf P. Steinbach" wrote:
* rm:
Here is a new tutorial that may be a good starting point for learning
Python.
http://www.themaemo.com/python-for-newbies/
Looks nice.
I have two comments: (1) what is "the N900"?, and (2) the naming conventio
* rm:
Here is a new tutorial that may be a good starting point for learning
Python.
http://www.themaemo.com/python-for-newbies/
Looks nice.
I have two comments: (1) what is "the N900"?, and (2) the naming convention,
using 'Num' for a variable and 'clsAddress' for a class, is opposite of the
Terry Reedy wrote:
DATA="""P3
3 2
255
255 0 0 0 255 0 0 0 255
255 255 0 255 255 255 0 0 0"""
Should the string really have the newlines? Or should this be
DATA="""P3\
3 2\
255\
255 0 0 0 255 0 0 0 255\
255 255 0 255 255 255 0 0 0"""
I'
Format: PDF
http://preview.tinyurl.com/ProgrammingBookP3>
The new stuff, section 2.7, is about programs as simulations and handling data,
focusing on modeling things. It includes some Python GUI programming. The plan
is to discuss containers like lists and dictionaries in perhaps two more
Hi all,
I've tried to display an image with the source being a string but it
fails (see below). Is there a way to display PPM without writing it
first to a file?
Thanks,
Martin
- snippet -
'''
Ubuntu 9.04 64bit, python 3.1
'''
import tkinter
DATA="""P3
3 2
255
255 0 0 0 255
Jon Clements wrote:
On Dec 8, 1:36 pm, Pierre wrote:
Hello,
let b = array([ [0,1,2] , [3,4,5] , [6,7,8] ])
How can I easily extract the submatrix [ [0 ,1], [3, 4]] ?
One possiblity is : b[[0,1],:][:,[0,1]] but it is not really easy !
Thanks.
x = numpy.array([ [0,1,2], [3,4,5], [6,7,8] ])
Grant Edwards wrote:
Does windows even _have_ a library dependancy system that lets
an application specify which versions of which libraries it
requires?
Well you could argue that easy_install does it a bit during install.
Then there is 'Windows Side By Side' (winsxs) system which sorta does i
Lie Ryan wrote:
The only thing that package managers couldn't provide is for the
extremist bleeding edge; those that want the latest and the greatest in
the first few seconds the developers releases them. The majority of
users don't fall into that category, most users are willing to wait a
Lie Ryan wrote:
Yes from an argumentative perspective you are right.
But given the choice of being right and alienate the fast majority of my
potential user base, I rather be wrong.
For me the 'Although practicality beats purity' is more important than
trying to beat a dead horse that is a p
Ben Finney wrote:
This omits the heart of the problem: There is an extra delay between
release and propagation of the security fix. When the third-party code
is released with a security fix, and is available in the operating
system, the duplicate in your application will not gain the advantage o
Ben Finney wrote:
"Martin P. Hellwig" writes:
Along with the duplication this introduces, it also means that any bug
fixes — even severe security fixes — in the third-party code will not be
addressed in your duplicate.
I disagree, what you need is:
- An automated build syste
W. eWatson wrote:
See Subject.
def StackImages(self):
self.Upload("P")
self.after_id = self.master.after(1,self.GetFrameOne)
If you are talking tkinter here, it is an alarm callback.
See http://effbot.org/tkinterbook/widget.htm
--
MPH
http://blog.dcukt
* MRAB:
Alf P. Steinbach wrote:
> * Dennis Lee Bieber:
>> On Sat, 05 Dec 2009 11:26:34 +0100, "Alf P. Steinbach"
>> declaimed the following in
>> gmane.comp.python.general:
>>
>>> The devolution of terminology has been so severe that now e
* Dennis Lee Bieber:
On Sat, 05 Dec 2009 11:26:34 +0100, "Alf P. Steinbach"
declaimed the following in gmane.comp.python.general:
The devolution of terminology has been so severe that now even the Wikipedia
article on this subject confounds the general concept of "routine"
Edward A. Falk wrote:
For development purposes, you should stick with the oldest version that will
actually run your code. Every time you move to a more modern version, you're
leaving potential users/customers out in the cold.
If the fear of customers disatification prevents you from using a
* Steven D'Aprano:
On Sat, 05 Dec 2009 11:26:34 +0100, Alf P. Steinbach wrote:
Regarding my terminology, "routine" instead "function" that everybody
except you remarked on, it is of course intentional. [...]
I think you failed to realise that your use of the term
* Lie Ryan:
On 12/5/2009 2:57 PM, Gnarlodious wrote:
On Dec 1, 3:06 pm, Terry Reedy wrote:
def print(s): return sys.stdout.buffer.write(s.encode('utf-8'))
Here is a better solution that lets me send any string to the
function:
def print(html): return sys.stdout.buffer.write(("Content-type:te
* Raymond Hettinger:
On Dec 4, 2:03 am, "Alf P. Steinbach" wrote:
Is this guaranteed to work in Python 3.x?
>>> def foo(): pass
...
>>> foo.blah = 222
>>> foo.blah
222
Yes, function attributes are guaranteed to be writable:
http://www.python.o
* Marco Mariani:
Alf P. Steinbach wrote:
Is this guaranteed to work in Python 3.x?
>>> def foo(): pass
>>> foo.blah = 222
>>> foo.blah
222
>>> _
I don't see why it shouldn't work.
For example,
(42).blah = 666
The question is w
Is this guaranteed to work in Python 3.x?
>>> def foo(): pass
...
>>> foo.blah = 222
>>> foo.blah
222
>>> _
Cheers,
- Alf
--
http://mail.python.org/mailman/listinfo/python-list
Hi.
I discovered with tkinter the registration of widgets with layout managers
(tkinter "geometry" managers, e.g. calls to pack()) needs to be done very
hierarchically.
And this leads to hierarchical code, which would be nice to indicate by
indenting, but oops, indenting in Python is syntact
Mark Summerfield wrote:
It is available as a free PDF download (no registration or anything)
from InformIT's website. Here's the direct link:
http://ptgmedia.pearsoncmg.com/imprint_downloads/informit/promotions/python/python2python3.pdf
Very handy! Am I wrong in assuming that you forgot to inc
* Edward Cherlin:
On Sun, Nov 29, 2009 at 11:34, Brian Blais wrote:
After a bit of playing, I realized that I couldn't think of many exaples
which use turtle with conditional structures (if- and while- statements),
Repeat is used much more often. but of course we can provide examples
of any
* Alf P. Steinbach:
I added a section on "basic data" to ch 2 of my writings, an
introduction to programming (with Python as main language).
The intended reader is someone who is intelligent and wants to learn
programming but knows little or nothing about it.
As before it would be
* Jean-Michel Pichavant:
Steven D'Aprano wrote:
On Mon, 30 Nov 2009 02:11:12 +0100, Alf P. Steinbach wrote:
I think if one could somehow declare names as const (final, readonly,
whatever) then that would cover the above plus much more.
Having real constants is one feature that I
* Esmail:
Ok, this is somewhat unexpected:
Python 2.6.2 (release26-maint, Apr 19 2009, 01:56:41)
[GCC 4.3.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> -3**2
-9
>>> x = -3
>>> x**2
9
>>>
I would have expected the same result in both cases.
Init
* markolopa:
On 18 Sep, 10:36, "markol...@gmail.com" wrote:
On Sep 11, 7:36 pm, Johan Grönqvist wrote:
I find several places in my code where I would like tohavea variable
scope that is smaller than the enclosing function/class/module definition.
This is one of the single major frustrations
I added a section on "basic data" to ch 2 of my writings, an introduction to
programming (with Python as main language).
The intended reader is someone who is intelligent and wants to learn programming
but knows little or nothing about it.
As before it would be nice with feedback on this.
* Alf P. Steinbach:
import os
import fileinput
def write( s ): print( s, end = "" )
msg_id = 0
f = open( "nul", "w" )
for line in fileinput.input( mode = "rb" ):
if line.startswith( "From - " ):
msg_id += 1;
f.close()
This is the tragic story of this evening:
1. Aspirins to lessen the pain somewhat.
2. Over in [comp.programming] someone mentions paper on Quicksort.
3. I recall that X once sent me link to paper about how to foil
Quicksort, written by was it Doug McIlroy, anyway some Bell Labs guy.
Want to
* Benjamin Kaplan:
On Thu, Nov 19, 2009 at 4:42 PM, Alf P. Steinbach wrote:
* Steven D'Aprano:
I feel that there's still something lacking in my understanding though, like
how/where the "really actually just pure local not also global" is defined
for function definition,
* Steven D'Aprano:
On Thu, 19 Nov 2009 21:37:17 +0100, Alf P. Steinbach wrote:
The CPython 3.1.1 language reference §4.1 says
"Each command typed interactively is a block."
It also says
"If a name is bound in a block, it is a local variable of that block,
un
The CPython 3.1.1 language reference §4.1 says
"Each command typed interactively is a block."
It also says
"If a name is bound in a block, it is a local variable of that block, unless
declared as nonlocal"
Even with a non-literal try-for-best-meaning reading I can't get this to mesh
wi
On Nov 17, 7:28 am, Jonathan Saxton wrote:
> On Thu, 12 Nov 2009 21:27:31 +0100, Bruno Desthuilliers wrote:
> >> Congratulations, you just reinvented one of the most infamous source of
> >> bugs in C, C++, Java, PHP, javascript and quite a few other languages.
> >> Believe it or not, but not allow
Ben Finney wrote:
Chris Rebert writes:
2009/11/16 Yasser Almeida Hernández :
How is the sintaxis for set the TODO and FIXME tags...?
There is no special syntax for those. Some people use them in
comments, but it's just a convention.
This is true. However, the convention is fairly well esta
Science and Programming. Thanks, Ray
it's 7919.
rday
--
====
Robert P. J. Day Waterloo, Ontario, CANADA
Linux Consulting, Training and Kernel Pe
On Nov 12, 12:06 pm, "Russ P." wrote:
> I have a Python program that runs too slow for some inputs. I would
> like to speed it up without rewriting any code. Psyco seemed like
> exactly what I need, until I saw that it only works on a 32-bit
> architecture. I work in an env
On Nov 14, 10:15 am, "Diez B. Roggisch" wrote:
> Russ P. schrieb:
>
> > I have a Python program that runs too slow for some inputs. I would
> > like to speed it up without rewriting any code. Psyco seemed like
> > exactly what I need, until I saw that it only wor
* gil_johnson:
On Nov 13, 5:29 pm, kj wrote:
[...]
Or it could be set up so that at least n > 1 "delete" votes and no
"keep" votes are required to get something nixed. Etc.
This seems simpler than all-out moderation.
("all-out moderation"? now, there's an oxymoron for ya!)
How about using
* Vincent Manis:
On 2009-11-14, at 01:11, Alf P. Steinbach wrote:
OK, now we've reached a total breakdown in communication, Alf. You appear
to take exception to distinguishing between a language and its implementation.
Not at all.
But that doesn't mean that making that distinction
* sturlamolden:
On 12 Nov, 18:32, "Alf P. Steinbach" wrote:
Hm, this seems religious.
Of course Python is slow: if you want speed, pay for it by complexity.
Not really. The speed problems of Python can to a large extent be
attributed to a sub-optimal VM.
Perl tends to be much f
* Vincent Manis:
On 2009-11-14, at 00:22, Alf P. Steinbach wrote, in response to my earlier post.
Anyways, it's a good example of focusing on irrelevant and meaningless
precision plus at the same time utilizing imprecision, higgedly-piggedly
as it suits one's argument. Mixing ha
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