[EMAIL PROTECTED] wrote:
... _, first_n = group[0]
what is the meaning of the underscore _ ? is it a special var ? or
should it be readed as a way of unpacking a tuple in a non useful var ?
like
lost, first_n = group[0]
Yep, it's just another name. lost would have worked just
jj_frap wrote:
I'm new to programming in Python and am currently writing a three-card
poker simulator. I have completed the entire simulator other than
determining who has the best hand (which will be far more difficult
than the aspects I've codes thus far)...I store each player's hand in a
Robert Kern wrote:
Steven Bethard wrote:
Can you do something like::
max_val, max_index = max((x, i) for i, x in enumerate(my_list))
? If any two x values are equal, this will return the one with the
lower index. Don't know if that matters to you.
Wouldn't it return the one
Gerard Flanagan wrote:
[EMAIL PROTECTED] wrote:
hello,
i'm looking for a way to have a list of number grouped by consecutive
interval, after a search, for example :
[3, 6, 7, 8, 12, 13, 15]
=
[[3, 4], [6,9], [12, 14], [15, 16]]
(6, not following 3, so 3 = [3:4] ; 7, 8 following 6 so
James J. Besemer wrote:
I propose that we extend the semantics of print such that if the
object to be printed is a generator then print would iterate over the
resulting sequence of sub-objects and recursively print each of the
items in order.
I don't feel like searching for the specific
[EMAIL PROTECTED] wrote:
i'm looking for a way to have a list of number grouped by consecutive
interval, after a search, for example :
[3, 6, 7, 8, 12, 13, 15]
=
[[3, 4], [6,9], [12, 14], [15, 16]]
Know your itertools. From the examples section[1]:
# Find runs of consecutive numbers
A.M wrote:
Do we have the conditional expressions in Python 2.4?
bruno at modulix wrote:
No, AFAIK they'll be in for 2.5
Yep:
Python 2.5a2 (trunk:46491M, May 27 2006, 14:43:55) [MSC v.1310 32 bit
(Intel)] on win32
Yes if 1 == 1 else No
'Yes'
In the meanwhile, there are (sometime trickyà
David Isaac wrote:
2. Is this a good argmax (as long as I know the iterable is finite)?
def argmax(iterable): return max(izip( iterable, count() ))[1]
In Python 2.5:
Python 2.5a2 (trunk:46491M, May 27 2006, 14:43:55) [MSC v.1310 32 bit
(Intel)] on win32
iterable = [5, 8, 2, 11, 6]
import
[EMAIL PROTECTED] wrote:
OK no question. I'm only posting b/c it may be something another newbie
will want to google in the future. Now that I've worked thru the
process this turns out to be fairly easy.
However, if there are better ways please let me know.
Module = ClassVars.py
import
[EMAIL PROTECTED] wrote:
Oops! This isn't working. As the sequence I'm trying for is
def set_classvars(**kwargs):
... def __metaclass__(name, bases, classdict):
... for name, value in kwargs.iteritems():
... if name not in classdict:
...
[EMAIL PROTECTED] wrote:
Fresh copies of class vars so the first one is the correct: ('foo',
'bar', [], False)
Ahh, yeah, then you definitely need the copy.copy call.
import copy
class ClassVars(type):
... def __init__(cls, name, bases, dict):
... for name, value in
[EMAIL PROTECTED] wrote:
I want to inherit fresh copies of some class variables. So I set up a
metaclass and meddle with the class variables there.
Now it would be convenient to run thru a dictionary rather than
explicitly set each variable. However getattr() and setattr() are out
because
Brian Cole wrote:
I'm not sure if this is the proper place to post this...
A lot of the essays at http://www.python.org/doc/essays/ have a messed
up layout in Firefox and IE.
The proper place to post this is to follow the Report website bug link
at the bottom of the sidebar and post a
AndyL wrote:
What would by a python equivalent of following shell program:
#!/bin/sh
prog1 file1
prog2 file2
If you're just going for quick-and-dirty, Rob's suggestion of os.system
is probably a reasonable way to go. If you want better error reporting,
I suggest using
Lorenzo Thurman wrote:
This is what I have so far:
//
#!/usr/bin/python
import os
cmd = 'ntpq -p'
output = os.popen(cmd).read()
//
The output is saved in the variable 'output'. What I need to do next is
select the line from that output that starts with the '*'
[snip]
From
So I see that elementtidy doesn't like strings with \0 characters in them:
import urllib
from elementtidy import TidyHTMLTreeBuilder
url = 'http://news.bbc.co.uk/1/hi/world/europe/492215.stm'
url_file = urllib.urlopen(url)
tree = TidyHTMLTreeBuilder.parse(url_file)
Traceback (most
I feel like I must be reinventing the wheel here, so I figured I'd post
to see what other people have been doing for this. In general, I love
the optparse interface, but it doesn't do any checks on the arguments.
I've coded something along the following lines a number of times:
class
Kay Schluehr wrote:
* building a dict of indicies::
positions = dict((item, i) for i, item in enumerate(L))
if positions['A'] positions['D']:
# do some stuff
You'll only get a gain from this version if you need to do several
comparisons instead of just one.
Sorry the summaries are so late. We were late already, and it's taken
me a bit of time to get set up with the new python.org site. But I
should be all good now, and hopefully we'll get caught up with all the
summaries by the end of May. Hope you all weren't too depressed
without your bi-weekly
python-dev Summary for 2006-03-01 through 2006-03-15
.. contents::
[The HTML version of this Summary is available at
http://www.python.org/dev/summary/2006-03-01_2006-03-15]
=
Announcements
=
---
python-dev Summary for 2006-02-01 through 2006-02-15
.. contents::
[The HTML version of this Summary is available at
http://www.python.org/dev/summary/2006-02-01_2006-02-15]
=
Announcements
=
python-dev Summary for 2006-02-16 through 2006-02-28
.. contents::
[The HTML version of this Summary is available at
http://www.python.org/dev/summary/2006-02-16_2006-02-28]
=
Announcements
=
---
nikie wrote:
Steven Bethard wrote:
nikie wrote:
Steven Bethard wrote:
John Salerno wrote:
If I want to make a list of four items, e.g. L = ['C', 'A', 'D', 'B'],
and then figure out if a certain element precedes another element, what
would be the best way to do that?
Looking
John J. Lee wrote:
Robin Becker [EMAIL PROTECTED] writes:
When young I was warned repeatedly by more knowledgeable folk that self
modifying code was dangerous.
Is the following idiom dangerous or unpythonic?
def func(a):
global func, data
data = somethingcomplexandcostly()
nikie wrote:
That's what this thread was all about. Now, I don't really see what you
are trying to say: Are you still trying to convince the OP that he
should write a Python function like one of those you suggested, for
performance reasons?
Sure, if it really matters. Code it in C, and you
Steven Bethard wrote:
John Salerno wrote:
If I want to make a list of four items, e.g. L = ['C', 'A', 'D', 'B'],
and then figure out if a certain element precedes another element,
what would be the best way to do that?
Looking at the built-in list functions, I thought I could do something
Edward Elliott wrote:
Remember kids:
1. Numbers can show anything
2. Know your data set
3. Premature optimizations are evil
Amen. =)
STeVe
--
http://mail.python.org/mailman/listinfo/python-list
John Salerno wrote:
If I want to make a list of four items, e.g. L = ['C', 'A', 'D', 'B'],
and then figure out if a certain element precedes another element, what
would be the best way to do that?
Looking at the built-in list functions, I thought I could do something
like:
if
Dennis Lee Bieber wrote:
On Thu, 27 Apr 2006 14:32:15 -0500, Philippe Martin
[EMAIL PROTECTED] declaimed the following in comp.lang.python:
What then is the point of the double underscore (if any) ?:
To prevent masking/shadowing of inherited attributes...
Note that it can fail to do
John Salerno wrote:
If I want to make a list of four items, e.g. L = ['C', 'A', 'D', 'B'],
and then figure out if a certain element precedes another element, what
would be the best way to do that?
Looking at the built-in list functions, I thought I could do something
like:
if
nikie wrote:
Steven Bethard wrote:
John Salerno wrote:
If I want to make a list of four items, e.g. L = ['C', 'A', 'D', 'B'],
and then figure out if a certain element precedes another element, what
would be the best way to do that?
Looking at the built-in list functions, I thought I could
Sorry the summaries are so late. We were late already, and it's taken
me a bit of time to get set up with the new python.org site. But I
should be all good now, and hopefully we'll get caught up with all the
summaries by the end of May. Hope you all weren't too depressed
without your bi-weekly
python-dev Summary for 2006-02-01 through 2006-02-15
.. contents::
[The HTML version of this Summary is available at
http://www.python.org/dev/summary/2006-02-01_2006-02-15]
=
Announcements
=
python-dev Summary for 2006-02-16 through 2006-02-28
.. contents::
[The HTML version of this Summary is available at
http://www.python.org/dev/summary/2006-02-16_2006-02-28]
=
Announcements
=
---
python-dev Summary for 2006-03-01 through 2006-03-15
.. contents::
[The HTML version of this Summary is available at
http://www.python.org/dev/summary/2006-03-01_2006-03-15]
=
Announcements
=
---
Panos Laganakos wrote:
we usually define private properties and provide public functions
to access them, in the form of:
get { ... } set { ... }
Should we do the same in Python:
self.__privateAttr = 'some val'
def getPrivateAttr(self):
return self.__privateAttr
Or there's no
[Please don't top-post]
Steven Bethard wrote:
Panos Laganakos wrote:
we usually define private properties and provide public functions
to access them, in the form of:
get { ... } set { ... }
Should we do the same in Python:
self.__privateAttr = 'some val'
def getPrivateAttr
Tim Roberts wrote:
Steven Bethard [EMAIL PROTECTED] wrote:
Steven Bethard wrote:
I've updated PEP 359 with a bunch of the recent suggestions. ...
Guido has pronounced on this PEP:
http://mail.python.org/pipermail/python-3000/2006-April/000936.html
Consider it dead. =)
I tried
Apr 2006) $
Author: Steven Bethard [EMAIL PROTECTED]
Status: Draft
Type: Standards Track
Content-Type: text/x-rst
Created: 05-Apr-2006
Python-Version: 2.6
Post-History: 05-Apr-2006, 06-Apr-2006, 13-Apr-2006
Abstract
This PEP proposes a generalization of the class-declaration syntax
Steven Bethard wrote:
I've updated PEP 359 with a bunch of the recent suggestions. The
patch is available at:
http://bugs.python.org/1472459
and I've pasted the full text below.
I've tried to be more explicit about the goals -- the make statement
is mostly syntactic sugar
Tim Hochberg wrote:
Tim Hochberg wrote:
I don't think that's correct. I think that with a suitably designed
HtmlDocument object, the following should be possible:
with HtmlDocument(Title) as doc:
with doc.element(body):
doc.text(before first h1)
with doc.element(h1,
Nicolas Fleury wrote:
Steven Bethard wrote:
Ok, I finally have a PEP number. Here's the most updated version of
the make statement PEP. I'll be posting it shortly to python-dev.
Thanks again for the previous discussion and suggestions!
I find it very interesting.
My only complaint
Duncan Booth wrote:
Steven Bethard wrote:
Should users of the make statement be able to determine in which dict
object the code is executed? The make statement could look for a
``__make_dict__`` attribute and call it to allow things like::
make Element html:
make Element
Steven Bethard wrote:
Duncan Booth wrote:
Steven Bethard wrote:
Should users of the make statement be able to determine in which dict
object the code is executed? The make statement could look for a
``__make_dict__`` attribute and call it to allow things like::
make Element html
Felipe Almeida Lessa wrote:
Em Sex, 2006-04-14 às 09:31 -0600, Steven Bethard escreveu:
[1] Here's the code I used to test it.
def make(callable, name, args, block_string):
... try:
... make_dict = callable.__make_dict__
... except AttributeError
Rob Williscroft wrote:
Steven Bethard wrote in news:[EMAIL PROTECTED]
in comp.lang.python:
Open Issues
===
Does the ``make`` keyword break too much code? Originally, the make
statement used the keyword ``create`` (a suggestion due to Nick
Coghlan). However, investigations
Tim Hochberg wrote:
Steven Bethard wrote:
Steven Bethard wrote:
Duncan Booth wrote:
make Element html:
make Element body:
make Element p:
text('But this ')
make Element strong:
text('could')
text(' be made to work
Steven Bethard wrote:
Tim Hochberg wrote:
Steven Bethard wrote:
Steven Bethard wrote:
Duncan Booth wrote:
make Element html:
make Element body:
make Element p:
text('But this ')
make Element strong:
text('could')
text(' be made
Raymond Hettinger wrote:
[Steven Bethard]
I think these are all good reasons for adding a clear method, but being
that it has been so hotly contended in the past, I don't think it will
get added without a PEP. Anyone out there willing to take out the best
examples from this thread and turn
:36:24 -0600 (Thu, 13 Apr 2006) $
Author: Steven Bethard [EMAIL PROTECTED]
Status: Draft
Type: Standards Track
Content-Type: text/x-rst
Created: 05-Apr-2006
Python-Version: 2.6
Post-History: 05-Apr-2006, 06-Apr-2006
Abstract
This PEP proposes a generalization of the class-declaration
Daniel Nogradi wrote:
I would like to give the same name to a keyword argument of a class
method as the name of a function, with the function and the class
living in the same namespace and the class method using the
aforementioned function. So far I've been unsuccesfully trying to go
along
Steven D'Aprano wrote:
On Tue, 11 Apr 2006 14:49:04 -0700, Ville Vainio wrote:
John Salerno wrote:
Thanks guys, your explanations are really helpful. I think what had me
confused at first was my understanding of what L[:] does on either side
of the assignment operator. On the left, it just
John Salerno wrote:
Steven Bethard wrote:
I think these are all good reasons for adding a clear method, but
being that it has been so hotly contended in the past, I don't think
it will get added without a PEP. Anyone out there willing to take out
the best examples from this thread
Michele Simionato wrote:
Peter Hansen wrote:
Michele Simionato wrote:
You can pull out the example in the official
PEP, if you like.
Please do. If this is supposed to have anything to do with namespaces,
it has nothing to do with the type of data structures XML is capable of
and the
Ville Vainio wrote:
I tried to clear a list today (which I do rather rarely, considering
that just doing l = [] works most of the time) and was shocked, SHOCKED
to notice that there is no clear() method. Dicts have it, sets have it,
why do lists have to be second class citizens?
This gets
John J. Lee wrote:
Michele Simionato [EMAIL PROTECTED] writes:
[...]
This agrees with my scan (except I also found an occurrence of 'create'
in Tkinter).
BTW, I would be curious to see the script you are using for the
scanning. Are you
using tokenize too? In am quite fond of the tokenize
John Salerno wrote:
Is 'Python 3000' just a code name for version 3.0, or will it really be
called that when it's released?
Actually, there's an official response these days in `PEP 3000`_:
Naming
Python 3000, Python 3.0 and Py3K are all names for the same thing. The
project is called
Carl Banks wrote:
Steven Bethard wrote:
I've updated the PEP based on a number of comments on comp.lang.python.
The most updated versions are still at:
http://ucsu.colorado.edu/~bethard/py/pep_create_statement.txt
http://ucsu.colorado.edu/~bethard/py/pep_create_statement.html
Michael Ekstrand wrote:
Something it could be useful to try to add, if possible: So far, it
seems that this create block can only create class-like things (objects
with a name, potentially bases, and a namespace). Is there a natural way
to extend this to other things, so that function creation
Tim N. van der Leeuw wrote:
Could this still make it in Python 2.5 even? If it's pushed hard
enough? I don't know if this has been discussed on the python-dev
mailing lists and what the reactions of python-devs and GvR was?
Unlikely. I haven't posted it to python-dev yet, and they've basically
Carl Banks wrote:
Steven Bethard wrote:
This PEP proposes a generalization of the class-declaration syntax,
the ``create`` statement. The proposed syntax and semantics parallel
the syntax for class definition, and so::
create callable name tuple:
block
is translated
to be applied to a wider variety
of callables; the latter keeps a better parallel with the class statement.
PEP: XXX
Title: The create statement
Version: $Revision: 1.4 $
Last-Modified: $Date: 2003/09/22 04:51:50 $
Author: Steven Bethard [EMAIL PROTECTED]
Status: Draft
Type: Standards Track
Content
Michele Simionato wrote:
Carl Banks wrote:
create module mod:
This creates a sub-module named mod with an f1 function
def f1():
...
Let's not do this, really. A module should be one-to-one with a file,
and you should be able to import any module.
Michele Simionato wrote:
Steven Bethard wrote:
I've updated the PEP based on a number of comments on comp.lang.python.
The most updated versions are still at:
http://ucsu.colorado.edu/~bethard/py/pep_create_statement.txt
http://ucsu.colorado.edu/~bethard/py
Steven Bethard wrote:
I've updated the PEP based on a number of comments on comp.lang.python.
The most updated versions are still at:
http://ucsu.colorado.edu/~bethard/py/pep_create_statement.txt
http://ucsu.colorado.edu/~bethard/py/pep_create_statement.html
In this post, I'm
Terry Reedy wrote:
Michele Simionato [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
This is a very relevant question. I would expect the new keyword would
break lots
of modules. However measuring is better than speculating.
Please run also with alternatives, such as 'make'.
I
and so far I (Steven Bethard) have not been able to implement
Steven the feature without the keyword.
Someone mentioned using make instead of create. In both my own code as
well as the Python source, use of make is much less prevalent than
create.
Yep. The next version of the PEP
: $Revision: 1.4 $
Last-Modified: $Date: 2003/09/22 04:51:50 $
Author: Steven Bethard [EMAIL PROTECTED]
Status: Draft
Type: Standards Track
Content-Type: text/x-rst
Created: 05-Apr-2006
Python-Version: 2.6
Post-History: 05-Apr-2006
Abstract
This PEP proposes a generalization of the class
Robin Becker wrote:
Steven Bethard wrote:
...
http://www.doxdesk.com/img/software/py/icons.zip
I just wanted to say that I've been using these icons for almost a
week now and I love them! I'd like to reiterate EuGeNe's request that
these go into the Python 2.5 release if at all
gangesmaster wrote:
i dont think it's possible, to create proxy classes, but even if i did,
calling remote methods with a `self` that is not an instance of the
remote class would blow up.
I don't understand you here. Why can't you just do something like:
class RemoteClass(object):
...
Steve R. Hastings wrote:
I was looking at a Python function to find the maximum from a list.
The original was more complicated; I simplified it. The built-in max()
function can replace the simplified example, but not the original.
What's the original? Are you sure max can't solve it with an
[EMAIL PROTECTED] wrote:
Personally, I *like* the new website look, and I'm glad to see Python
having a proper logo at last!
I've taken the opportunity to knock up some icons using it, finally
banishing the poor old standard-VGA-palette snake from my desktop. If
you like, you can grab them
Steve R. Hastings wrote:
On Sun, 26 Mar 2006 10:34:16 -0700, Steven Bethard wrote:
What's the original?
def minimum(cmp, lst):
minimum(cmp, lst)
Returns the minimal element in non-empty list LST with elements
compared via CMP() which should return values with the same semantics
gangesmaster wrote:
but __mro__ is a readonly attribute, and deriving from instances is
impossible (conn.modules.wx.Frame is a PROXY to the class)...
Maybe I'm misunderstanding, but why is an instance a proxy to a class?
Why don't you make a class a proxy to the class?
STeVe
--
Salvatore wrote:
I've read several articles where it's said that Python is weakly typed.
I'm a little surprised. All objects seem to have a perfectly defined
type
Hoping to head off another debate:
http://wiki.python.org/moin/StrongVsWeakTyping
STeVe
--
Anand wrote:
Wouldn't it be nice to say
id, *tokens = line.split(',')
id, tokens_str = line.split(',', 1)
But then you have to split tokens_str again.
id, tokens_str = line.split(',', 1)
tokens = tokens_str.split(',')
Sorry, it wasn't clear that you needed the tokens from the original
bruno at modulix wrote:
Steven Bethard wrote:
Could you explain again why you don't want baaz to be a class-level
attribute?
Because the class is a decorator for many controller functions, and each
controller function will need it's own set of descriptors, so I don't
want to mess
bruno at modulix wrote:
Using a class as a
decorator, I have of course only one instance of it per function - and
for some attributes, I need an instance per function call.
Per function call? And you want the attributes on the function, not the
result of calling the function? If so, that'd
Anand wrote:
Wouldn't it be nice to say
id, *tokens = line.split(',')
id, tokens_str = line.split(',', 1)
STeVe
--
http://mail.python.org/mailman/listinfo/python-list
bruno at modulix wrote:
Hi
I'm currently playing with some (possibly weird...) code, and I'd have a
use for per-instance descriptors, ie (dummy code):
class DummyDescriptor(object):
def __get__(self, obj, objtype=None):
if obj is None:
return self
return getattr(obj,
Gregory Petrosyan wrote:
1) From 2.4.2 documentation:
There are two new valid (semantic) forms for the raise statement:
raise Class, instance
raise instance
Check `PEP 8`_ -- the latter form is preferred:
When raising an exception, use raise ValueError('message') instead of
the older form
[EMAIL PROTECTED] wrote:
f(01)
43
f(02)
44
f(010)
50
42+010
50
The first f(01) was a mistake. I accidentally forgot to delete the
zero, but to my suprise, it yielded the result I expected. So, I tried
it again, and viola, the right answer. So, I decided to really try and
throw it
Schüle Daniel wrote:
however we lack the reverse functionality
the logical
str(10,2)
Traceback (most recent call last):
File stdin, line 1, in ?
TypeError: str() takes at most 1 argument (2 given)
fails
it would not break anything if str interface would be changed
what do you
Colin J. Williams wrote:
Doc strings provide us with a great opportunity to illuminate our code.
In the example below, __init__ refers us to the class's documentation,
but the class doc doesn't help much.
It doesn't?
print list.__doc__
list() - new list
list(sequence) - new list
the.theorist wrote:
I was writing a small script the other day with the following CLI
prog [options] [file]*
I've used getopt to parse out the possible options, so we'll ignore
that part, and assume for the rest of the discussion that args is a
list of file names (if any provided).
I
Fredrik Lundh wrote:
Steven Bethard wrote:
I'm having trouble using elementtree with an XML file that has some
gbk-encoded text. (I can't read Chinese, so I'm taking their word for
it that it's gbk-encoded.) I always have trouble with encodings, so I'm
sure I'm just screwing something
Fredrik Lundh wrote:
Steven Bethard wrote:
Hmm... I downloaded the newest cElementTree (and I already had the
newest ElementTree), and here's what I get:
tree = myparser(filename, 'gbk')
Traceback (most recent call last):
File interactive input, line 1, in ?
File interactive
A.M. Kuchling wrote:
On Sun, 12 Mar 2006 10:25:19 +0100,
Fredrik Lundh [EMAIL PROTECTED] wrote:
and while you're at it, change python-dev to developers and
psf to foundation (or use a title on that link).
I've changed the PSF link, but am not sure what to do about the
python-dev
I'm having trouble using elementtree with an XML file that has some
gbk-encoded text. (I can't read Chinese, so I'm taking their word for
it that it's gbk-encoded.) I always have trouble with encodings, so I'm
sure I'm just screwing something simple up. Can anyone help me?
Here's the
Diez B. Roggisch wrote:
Steven Bethard schrieb:
I'm having trouble using elementtree with an XML file that has some
gbk-encoded text. (I can't read Chinese, so I'm taking their word for
it that it's gbk-encoded.) I always have trouble with encodings, so
I'm sure I'm just screwing
Diez B. Roggisch wrote:
Here's what I get with the prepending hack:
et.fromstring('?xml version=1.0 encoding=gbk?\n' +
open(filename).read())
Traceback (most recent call last):
File interactive input, line 1, in ?
File C:\Program
Martin P. Hellwig wrote:
While I was reading PEP 8 I came across this part:
Function and method arguments
Always use 'self' for the first argument to instance methods.
Always use 'cls' for the first argument to class methods.
Now I'm rather new to programming and unfamiliar to
[EMAIL PROTECTED] wrote:
I'm having a scoping problem. I have a module called SpecialFile,
which defines:
def open(fname, mode):
return SpecialFile(fname, mode)
class SpecialFile:
def __init__(self, fname, mode):
self.f = open(fname, mode)
...
[snip]
How do I tell
John Salerno wrote:
Given:
numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
can someone explain to me why
numbers[10:0:-2] results in [10, 8, 6, 4, 2]?
I've filed a bug report:
http://bugs.python.org/1446619
I suggest the following rewording for extended slices:
To get the slice of s
Roy Smith wrote:
I'm OK with bold for stuff like this, but the wording could be better. The
last sentence:
Many Python programmers report substantial productivity
gains and feel the language encourages the development of
higher quality, more maintainable code.
reads
Michal Kwiatkowski wrote:
Code below shows that property() works only if you use it within a class.
Yes, descriptors are only applied at the class level (that is, only
class objects call the __get__ methods).
Is there any method of making descriptors on per-object basis?
I'm still not
John Salerno wrote:
Given:
numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
can someone explain to me why
numbers[10:0:-2] results in [10, 8, 6, 4, 2]?
I always have trouble with these. Given the docs[1]:
The slice of s from i to j with step k is defined as the sequence of
items with index
Phoe6 wrote:
beta.python.org evolved very nice and noticed today the new python.org
website going live. There is a change in the look n feel, wherein it
looks more official and maximum possible information about python is
now directly accessible from the home page itself. Kudoes to the
Antoon Pardon wrote:
I then took a look at http://docs.python.org/lib/module-exceptions.html
which describes the exception heirarchy as follows:
Exception
+-- SystemExit
+-- StopIteration
+-- StandardError
| +
| + All kind of error exceptions
| +
Sandra-24 wrote:
I was reading over some python code recently, and I saw something like
this:
contents = open(file).read()
And of course you can also do:
open(file, w).write(obj)
Why do they no close the files? Is this sloppy programming or is the
file automatically closed when the
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