On 3/23/07, Bjoern Schliessmann
[EMAIL PROTECTED] wrote:
(Note that almost everything in Python is an object!)
Could you tell me what in Python isn't an object? Are you counting
old-style classes and instances as not objects?
--
Felipe.
--
http://mail.python.org/mailman/listinfo/python-list
On 24 Mar 2007 20:24:36 -0700, 7stud [EMAIL PROTECTED] wrote:
Here is some example code that produces an error:
[snip]
Why do people absolutely *love* to do weird and ugly things with
Python? Contests apart, I don't see lots of people trying this kind of
things on other (common) languages.
Say
On 2/19/07, Steven W. Orr [EMAIL PROTECTED] wrote:
The short story is that someone left, but before he left he checked in a
.pyc and then both the directory was destroyed and the backups all got
shredded (don't ask*). Is there anything that can be extracted? I looked
on the web and the subject
On 7 Feb 2007 19:14:13 -0800, [EMAIL PROTECTED] [EMAIL PROTECTED]
struct module pack and unpack will only work for fixed size buffer :
pack('1024sIL', buffer, count. offset) but the buffer size can vary
from one packet to the next :-(
Then send the size of the buffer before the buffer, so the
On 1/10/07, Gabriel Genellina [EMAIL PROTECTED] wrote:
At Wednesday 10/1/2007 04:38, Paul Sijben wrote:
Does anyone know what it going on here and how I can ensure that I have
all the threads I need?
Simply you can't, as you can't have 1 open files at once.
Computer resources are not
On 1/10/07, Laurent Pointal [EMAIL PROTECTED] wrote:
This is a system configurable limit (up to a maximum).
See ulimit man pages.
test
ulimit -a
to see what are the current limits, and try with
ulimit -u 2000
to modify the maximum number of user process (AFAIK each thread
On 9 Jan 2007 07:01:31 -0800, abcd [EMAIL PROTECTED] wrote:
anyways, is there a way to check without having an instance of the
class?
In [1]: class A:
...: pass
...:
In [2]: class B(A):
...: pass
...:
In [3]: issubclass(B, A)
Out[3]: True
In [4]: isinstance(B(), B)
On 1/8/07, tsuraan [EMAIL PROTECTED] wrote:
[snip]
The loop is deep enough that I always interrupt it once python's size is
around 250 MB. Once the gc.collect() call is finished, python's size has
not changed a bit.
[snip]
This has been tried under python 2.4.3 in gentoo linux and python 2.3
On 1/8/07, tsuraan [EMAIL PROTECTED] wrote:
I just tried on my system
(Python is using 2.9 MiB)
a = ['a' * (1 20) for i in xrange(300)]
(Python is using 304.1 MiB)
del a
(Python is using 2.9 MiB -- as before)
And I didn't even need to tell the garbage collector to do its
On 07 Jan 2007 02:01:44 -0800, Paul Rubin
http://phr.cx@nospam.invalid wrote:
Dennis Lee Bieber [EMAIL PROTECTED] writes:
__ (two leading underscores) results in name-mangling. This /may/ be
used to specify private data, but is really more useful when one is
designing with multiple
On 1/7/07, Michael M. [EMAIL PROTECTED] wrote:
How to find the longst element list of lists?
s1 = [q, e, d]
s2 = [a, b]
s3 = [a, b, c, d]
s = [s1, s2, s3]
s.sort(key=len, reverse=True)
print s[0] is s3
print s[1] is s1
print s[2] is s2
sx1, sx2, sx3 = s
print 'sx1:', sx1
print 'sx2:', sx2
On 1/4/07, Chaz Ginger [EMAIL PROTECTED] wrote:
I have a rather large Python/Twisted Matrix application that will be run
on Windows, Linux and perhaps Macs. I was wondering if there are any
tools that can be used to create an installer that will bring in Python,
Twisted Matrix, my application
On 3 Jan 2007 10:52:02 -0800, [EMAIL PROTECTED]
[EMAIL PROTECTED] wrote:
I have tried to
convert them to tex using OpenOffice, but the result is ugly as hell.
Why not use OO.org to convert DOC to PDF? It does so natively, IIRC.
--
Felipe.
--
On 1/3/07, meelab [EMAIL PROTECTED] wrote:
I am looking for a way to create a static object or a static class -
terms might be inappropriate - having for instance:
An example will speak better than me:
class Card(object):
__cards = {}
def __init__(self, number, suit):
On 31 Dec 2006 03:57:04 -0800, Isaac Rodriguez
[EMAIL PROTECTED] wrote:
I am using Python 2.4, and I was wondering if by default, all
classes are assumed to be derived from object.
This won't tell you advantages or disadvantages, but will show you
that the default still is the old-style:
On 31 Dec 2006 05:20:10 -0800, JTree [EMAIL PROTECTED] wrote:
def funUrlFetch(url):
lambda url:urllib.urlopen(url).read()
This function only creates a lambda function (that is not used or
assigned anywhere), nothing more, nothing less. Thus, it returns None
(sort of void) no matter what is
On 26 Dec 2006 04:22:38 -0800, placid [EMAIL PROTECTED] wrote:
So do you want to remove or replace them with amp; ? If you want
to replace it try the following;
I think he wants to replace them, but just the invalid ones. I.e.,
This this amp; that
would become
This amp; this amp; that
On 4 Dec 2006 20:18:22 -0800, Linan [EMAIL PROTECTED] wrote:
3, If not, where to get the real one(s)?
After reading Calvin's mail, you may want to see
http://twistedmatrix.com/ . It's an assynchronous library built around
the concept of deferreds (think of callbacks). You may like it =).
Cya,
On 2 Dec 2006 10:42:28 -0800, Evan [EMAIL PROTECTED] wrote:
Why is it that the first call works fine, but the second tells me
'global name 'self' is not defined'? What I want is to have the
dictionary 'estoc' available in my calling script.
Well, you have not posted the code that is causing
On 12/1/06, Karl Kofnarson [EMAIL PROTECTED] wrote:
[snip]
def fun_basket(f):
common_var = [0]
def f1():
print common_var[0]
common_var[0]=1
def f2():
print common_var[0]
common_var[0]=2
if f == 1:
return f1
if f == 2:
29 Oct 2006 14:18:02 -0800, Paul Rubin http://phr.cx@nospam.invalid:
Nick Vatamaniuc [EMAIL PROTECTED] writes:
The simplest solution is to change your system and put the DB on the
same machine thus greatly reducing the time it takes for each DB query
to complete (avoid the TCP stack
22 Oct 2006 06:33:50 -0700, Lucas [EMAIL PROTECTED]:
I known how to do it.read() return a string. so1) bytes = read(1) #read the file by bit.2) chrString= ord(bytes) #convert the string to ASCII.3) print numberToBinary(chrString) #convert the ASCII to Binary using
my function.4)
28 Sep 2006 19:07:23 -0700, Larry Hastings [EMAIL PROTECTED]:
THE BENCHMARKS
Benchmark 1:
def add(a, b, c, ... t): return a + b + c + ... + t
for i in range(1000): add(aaa, bbb, ccc, ..., ttt)
[snip]
What about a + b? Or a + b + c? Does it have a large overhead on
small
2006/9/26, Sybren Stuvel [EMAIL PROTECTED]:
Aahz enlightened us with:
Fredrik Lundh [EMAIL PROTECTED] wrote:
well, if you're only watching mtv, it's easy to think that there's
obviously not much demand for country singers, blues musicians,
British hard rock bands, or melodic death metal
2006/9/25, Robert Kern [EMAIL PROTECTED]:
walterbyrd wrote:
If so, I doubt there are many.
I wonder why that is?
Well I do. So do the other dozen or so developers at my company. We're looking
to hire a few more, in fact.
And there are also those ReportLab guys:
www.reportlab.com
--
24 Sep 2006 10:09:16 -0700, Rainy [EMAIL PROTECTED]:
Functionally they are the same, but third line included in Firefox.
Opera View Source command produces the same result as Python.
[snip]
It's better to compare with the result of a downloader-only (instead
of a parser), like wget on Unix.
2006/9/21, Berthold Höllmann [EMAIL PROTECTED]:
Saving the following code to a file and running the code through
python does not give the expected error. disableling the @decor line
leads to the expected error message. Is this a bug or an overseen
feature?
Try the new_decor class described
7 Sep 2006 23:38:08 -0700, Tal Einat [EMAIL PROTECTED]:
I'm not an expert in socket programming, but I can't see the
correlation between the listener socket being in timeout mode and a
different behavior the other sockets..
Anyhow the main goal is being able to shut down the thread of the
2006/9/6, Robin Becker [EMAIL PROTECTED]:
enigmadude wrote:
As many have heard, IronPython 1.0 was released. When I was looking
through the listed differences between CPython and IronPython, the
document mentioned that using large exponents such as 10 **
735293857239475 will cause CPython
10 Sep 2006 16:17:08 -0700, Paul Rubin http://phr.cx@nospam.invalid:
So, I think it's not worth thinking about writing yet another BBS
unless it can handle a Slashdot-sized load on a commodity PC.
Python is slow. Psyco helps, but you should use C instead.
And yes, I am kidding =)
--
Felipe.
2006/9/7, Butternut Squash [EMAIL PROTECTED]:
right now we are using c# and .net remoting in a way that just is not
efficient.
I want to rewrite a lot of what we do in python. I have seen XML-RPC and
soap. Are there other options?
It surely depends on what's going to be on the other sides.
8 Sep 2006 13:41:48 -0700, Jay [EMAIL PROTECTED]:
Let's say, for instance, that one was programming a spell checker or
some other function where the contents of a string from a text-editor's
text box needed to be split so that the resulting array has each word
as an element. Is there a
2006/9/8, Butternut Squash [EMAIL PROTECTED]:
I have to support multiple applications using different schema and
databases. Would like to present as much as a unified interface as
possible.
I'd recomend CORBA as it supports multiple platforms and languages.
SOAP and XML-RPC can be used as
8 Sep 2006 17:37:02 -0700, [EMAIL PROTECTED] [EMAIL PROTECTED]:
1. Using an _ is an interesting way to use a throw-away variable. Never
would I think of that ... but, then, I don't do Perl either :)
It's a kind of convention. For example, Pylint complains for all
variables you set and don't use
08 Sep 2006 17:33:20 -0700, Paul Rubin http://phr.cx@nospam.invalid:
[EMAIL PROTECTED] writes:
print sum( ([i]*n for i,n in enumerate(seq)), [])
Wow, I had no idea you could do that. After all the discussion about
summing strings, I'm astonished.
Why? You already had the answer: summing
2006/9/7, Bruno Desthuilliers [EMAIL PROTECTED]:
I don't think one could pretend writing a cross-platform application
without testing it on all targeted platforms.
E.g: while creating a free software, you may not have an Apple
computer but you may want to be *possible* to run your program
2006/9/5, Jim Hugunin [EMAIL PROTECTED]:
I'm extremely happy to announce that we have released IronPython 1.0 today!
http://www.codeplex.com/IronPython
Does IronPython runs Twisted?
--
Felipe.
--
http://mail.python.org/mailman/listinfo/python-list
7 Sep 2006 16:34:56 -0700, Luis M. González [EMAIL PROTECTED]:
People are already porting some of these libraries.
Those that are written in pure python don't need to be ported, but
those that rely on c extensions can be rewritten in c# or any other
.NET language.
Or in C that is P/Invoked
4 Sep 2006 19:19:24 -0700, Sandra-24 [EMAIL PROTECTED]:
If there was a mod_dotnet I wouldn't be using
CPython anymore.
I guess you won't be using then: http://www.mono-project.com/Mod_mono
--
Felipe.
--
http://mail.python.org/mailman/listinfo/python-list
5 Sep 2006 03:44:47 -0700, Leon [EMAIL PROTECTED]:
Greetings,
Does anybody know of or is working on any python modules that allow for
a direct but higher-level interface to OpenGL? For example, quick
functions to draw lines, curves, and basic shapes; define hsb color
mode; fill and stroke
2006/9/3, Alex Martelli [EMAIL PROTECTED]:
Reflecting on the OP's use case, since all connections are forever being
made to the same 16 servers, why not tweak thinks a bit to hold those
connections open for longer periods of time, using a connection for many
send/receive transactions instead
2006/8/30, Ben Finney [EMAIL PROTECTED]:
re
struct
unicodedata
decimal
random
logging
Queue
urlparse
email
operator
cStringIO
math
cmath
sets (merged to the language)
itertools
os + stat
time
tempfile
glob
Not that I use them all the time, but they
2006/8/30, Les Schaffer [EMAIL PROTECTED]:
is there a best practice way to do this?
I'm not a cryptographer, but you should really try the function
collect() inside the gc module.
--
Felipe.
--
http://mail.python.org/mailman/listinfo/python-list
23 Aug 2006 17:28:48 -0700, KraftDiner [EMAIL PROTECTED]:
This is obvious... but how do I crop off the high order bits if
necessary?
a[0]0x ?
min(a[0], 0x) ?
--
Felipe.
--
http://mail.python.org/mailman/listinfo/python-list
20 Aug 2006 14:47:14 -0700, Bucco [EMAIL PROTECTED]:
I am trying to compare a list of items to the list of files generated
by os.listdir. I am having trouble getting this to work and think I
may be going down the wrong path. Please let me know if hter is a
better way to do this. THis is
Em Ter, 2006-08-01 às 18:45 -0700, jeremito escreveu:
I am extending python with C++ and need some help. I would like to
convert a string to a mathematical function and then make this a C++
function.
I may be wrong, but I don't think you can create new C++ functions
on-the-fly. At least I
Em Dom, 2006-06-11 às 11:19 -0700, fl1p-fl0p escreveu:
import math
math.pow(34564323, 456356)
will give math range error.
how can i force python to process huge integers without math range
error? Any modules i can use possibly?
34564323**456356 ?
--
Felipe.
--
Em Dom, 2006-06-11 às 20:10 +, Stan Cook escreveu:
Can anyone tell me how to get the length of a number. I
know len(string) will get the length of a string, but it
doesn't like len(int). I seem to remember something like %s
string. I tried to set a variable = to %s int, but that
Em Dom, 2006-06-11 às 13:17 -0700, Saketh escreveu:
Stan Cook wrote:
Can anyone tell me how to get the length of a number. I
know len(string) will get the length of a string, but it
doesn't like len(int). I seem to remember something like %s
string. I tried to set a variable = to %s
Em Dom, 2006-06-11 às 22:33 +0200, Sybren Stuvel escreveu:
Felipe Almeida Lessa enlightened us with:
To see how many decimal digits it has:
import math
math.ceil(math.log(i, 10))
That doesn't work properly.
import math
math.ceil(math.log(1, 10))
4.0
math.ceil
Em Sex, 2006-06-09 às 12:30 -0400, Alan Isaac escreveu:
It's your code, so you get to license it.
But if you wish to solicit patches,
a more Pythonic license is IMHO more likely
to prove fruitful.
Pythonic license? That's new to me. I can figure out what a
Python-like license is, but I'm
Em Sex, 2006-06-09 às 13:54 -0700, Manish Marathe escreveu:
On 6/9/06, Fredrik Lundh [EMAIL PROTECTED] wrote:
Manish Marathe wrote:
I am creating threads using my self defined class which
inherits the
threading.Thread class. I want to know how can I
Em Ter, 2006-06-06 às 13:56 +, Paul McGuire escreveu:
(just can't open it up like a text file)
Who'll open a 10 GiB file anyway?
--
Felipe.
--
http://mail.python.org/mailman/listinfo/python-list
Em Sex, 2006-06-02 às 15:42 -0500, Larry Bates escreveu:
ReportLab Graphics can do 2D and pie charts, but I don't think it does
3D charts yet.
www.reporlab.org
It does, but I'm not sure if the PNG backend is as good as the PDF one.
--
Felipe.
--
Em Sex, 2006-06-02 às 16:56 -0400, A.M escreveu:
I can't browse to www.reporlab.org, but I found http://www.reportlab.com/
which has a commercial charting product. Is that what you referring to?
ReportLab (the commercial bussiness thing on .com) is where the main
developers of ReportLab (a
Em Dom, 2006-05-21 às 17:11 +0200, Heiko Wundram escreveu:
for node in tree if node.haschildren():
do something with node
as syntactic sugar for:
for node in tree:
if not node.haschildren():
continue
do something with node
Em Dom, 2006-05-21 às 11:52 -0700, gangesmaster escreveu:
Today you can archive the same effect (but not necessarily with the same
performance) with:
for node in (x for x in tree if x.haschildren()):
do something with node
true, but it has different semantic meanings
I know,
Em Ter, 2006-05-16 às 20:25 +, John Salerno escreveu:
it doesn't seem to work. The full code is below if it helps to understand.
Why doesn't it work? What does it do, what did you expect it to do?
''.join(set('hi'))
'ih'
''.join(set('HI'))
'IH'
''.join(set('hiHI'))
'ihIH'
Em Ter, 2006-05-09 às 23:30 -0700, Kay Schluehr escreveu:
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/496691
Is it thread safe?
--
Felipe.
--
http://mail.python.org/mailman/listinfo/python-list
Em Sex, 2006-05-05 às 16:37 -0400, Ivan Vinogradov escreveu:
This works to catch NaN on OSX and Linux:
# assuming x is a number
if x+1==x or x!=x:
#x is NaN
This works everywhere:
nan = float('nan')
.
.
.
if x == nan:
# x is not a number
--
Felipe.
--
Em Sáb, 2006-04-22 às 09:21 -0700, harold escreveu:
for line in sys.stdin :
try :
for a,b,c,d in line.split() :
pass
except ValueError , err :
print line.split()
raise err
Try this:
for a, b, c, d in sys.stdin:
print a, b, c, d
--
Em Sáb, 2006-04-22 às 14:25 -0300, Felipe Almeida Lessa escreveu:
Em Sáb, 2006-04-22 às 09:21 -0700, harold escreveu:
for line in sys.stdin :
try :
for a,b,c,d in line.split() :
pass
except ValueError , err :
print line.split()
raise
Em Sáb, 2006-04-22 às 15:14 -0400, Sambo escreveu:
when I import it (electronics) in python.exe in windows2000 and
try to use it, it croaks. ???
$ python2.4
Python 2.4.3 (#2, Mar 30 2006, 21:52:26)
[GCC 4.0.3 (Debian 4.0.3-1)] on linux2
Type help, copyright, credits or license for more
Em Dom, 2006-04-23 às 00:20 +0200, Michal Kwiatkowski escreveu:
Hi!
I was just wondering...
Probably there is another factor involved:
$ python2.3
Python 2.3.5 (#2, Mar 6 2006, 10:12:24)
[GCC 4.0.3 20060304 (prerelease) (Debian 4.0.2-10)] on linux2
Type help, copyright, credits or license
Em Sex, 2006-04-21 às 13:49 -0400, Michael Yanowitz escreveu:
I ran the new pylint and my code and I had a few questions on why those
are warnings or what I can do to fix them:
You can ignore the warnings you don't like with the --disable-msg
option. Also, you can add a header to the file to
Em Sex, 2006-04-21 às 18:40 -0700, Clodoaldo Pinto escreveu:
Only a small problem when I try to evaluate this:
safe_eval('True')
Change
def visitName(self,node, **kw):
raise Unsafe_Source_Error(Strings must be quoted,
node.name, node)
To
Em Sáb, 2006-04-22 às 03:16 +, Edward Elliott escreveu:
If that level of accuracy
matters, you might consider generating your rands as integers and then
fp-dividing by the sum (or just store them as integers/fractions).
Or using decimal module:
Em Qua, 2006-04-19 às 16:54 -0700, mwt escreveu:
This works when I try it, but I feel vaguely uneasy about putting
method calls in exception blocks.
What do you put in exception blocks?!
So tell me, Brave Pythoneers, is this
evil sorcery that I will end up regretting, or is it just plain
Em Ter, 2006-04-18 às 10:31 -0500, Tim Chase escreveu:
Is there an obvious/pythonic way to remove duplicates from a
list (resulting order doesn't matter, or can be sorted
postfacto)? My first-pass hack was something of the form
myList = [3,1,4,1,5,9,2,6,5,3,5]
uniq = dict([k,None for
Em Ter, 2006-04-18 às 17:25 -0700, [EMAIL PROTECTED] escreveu:
Hi,
I have a bunch of strings like
a53bc_531.txt
a53bc_2285.txt
...
a53bc_359.txt
and I want to extract the numbers 531, 2285, ...,359.
Some ways:
1) Regular expressions, as you said:
from re import compile
find =
Em Dom, 2006-04-16 às 19:22 -0400, Kun escreveu:
i have a form
Which kind of form? Which toolkit?
which takes in inputs for a mysql query. one of the inputs
is 'date'. normally, a user has to manually enter a date,
Enter the date in which kind of control?
but i am
wondering if there
Em Sáb, 2006-04-15 às 19:25 +, HNT20 escreveu:
is there a way to convert a string into its binary representation of the
ascii table.??
I'm very curious... why?
And no, I don't have the answer.
--
Felipe.
--
http://mail.python.org/mailman/listinfo/python-list
Em Sáb, 2006-04-15 às 18:09 -0400, Terry Reedy escreveu:
# given string s
binchars = []
for c in s: binchars.append(a2b[ord(c)])
Faster:
binchars = [a2b[ord(c)] for c in s]
--
Felipe.
--
http://mail.python.org/mailman/listinfo/python-list
Em Sex, 2006-04-14 às 07:47 -0700, BartlebyScrivener escreveu:
starts = [i for i, line in enumerate(lines) if
line.startswith('(defun')]
This line makes a list of integers. enumerate gives you a generator that
yields tuples consisting of (integer, object), and by i for i, line
you unpack the
Em Sex, 2006-04-14 às 17:14 +0200, Jan Prochazka escreveu:
Here is my module for parsing zip files:
1) Have you checked the source of Python's zipfile module?
import struct, zlib
class ZipHeaderEntry:
name = ''
offset = 0
uncomlen = 0
comlen = 0
2) You know that those
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:
... make_dict = dict
... block_dict =
Em Sex, 2006-04-14 às 09:18 -0700, wietse escreveu:
def __init__(self, name, collection=[]):
Never, ever, use the default as a list.
self.collection = collection
This will just make a reference of self.collection to the collection
argument.
inst.collection.append(i)
As
Em Sex, 2006-04-14 às 13:30 -0300, Felipe Almeida Lessa escreveu:
To solve your problem, change
def __init__(self, name, collection=[]):
BaseClass.__init__(self)
self.name = name
self.collection = collection # Will reuse the list
to
def __init__(self, name
Em Sáb, 2006-04-15 às 04:03 +1000, Steven D'Aprano escreveu:
Sometimes you want the default to mutate each time it is used, for example
that is a good technique for caching a result:
def fact(n, _cache=[1, 1, 2]):
Iterative factorial with a cache.
try:
return _cache[n]
Em Sex, 2006-04-14 às 13:28 -0500, Robert Kern escreveu:
Steven D'Aprano wrote:
I came across an interesting (as in the Chinese curse) problem today. I
had to modify a piece of code using generator expressions written with
Python 2.4 in mind to run under version 2.3, but I wanted the code
Em Sex, 2006-04-14 às 20:33 +0200, Diez B. Roggisch escreveu:
def read_lines(inFile):
fg = iter(inFile)
for line in fg:
if pmos4_highv in line:
fg.next()
else:
yield line
Just be aware that the fb.next() line can raise an StopIteration
Em Sex, 2006-04-14 às 13:37 -0500, Robert Kern escreveu:
Felipe Almeida Lessa wrote:
Em Sex, 2006-04-14 às 13:28 -0500, Robert Kern escreveu:
Steven D'Aprano wrote:
I came across an interesting (as in the Chinese curse) problem today. I
had to modify a piece of code using generator
Em Sex, 2006-04-14 às 15:43 -0700, flamesrock escreveu:
Does anyone have a simple solution
$ python2.4
Python 2.4.3 (#2, Mar 30 2006, 21:52:26)
[GCC 4.0.3 (Debian 4.0.3-1)] on linux2
Type help, copyright, credits or license for more information.
l1 = [['c1',1],['c2',2],['c3',4]]
l2 =
Em Sex, 2006-04-14 às 12:46 +1000, Steven D'Aprano escreveu:
Why would you want to call in the heavy sledgehammer of regular
expressions for cracking this peanut?
And put heavy on that!
$ python2.4 -mtimeit -s str = 'D c a V e r \ = d w o r d : 0 0 0 0 0 6
4 0' 'str.replace( , )'
10 loops,
Em Qui, 2006-04-13 às 23:17 -0400, Nicolas Fleury escreveu:
The callable could have something like a __namespacetype__ that could be
use instead of dict. That type would have to implement __setitem__.
Or the namespace variable could be a list of tuples.
--
Felipe.
--
Em Sex, 2006-04-14 às 09:17 +0400, Sergei Organov escreveu:
I, as a newcomer, don't have much trouble understanding the binding vs
the assignment by themselves. What does somewhat confuse is dual role of
the = operator, -- sometimes it means bind and other times it means
assign, right? For me
Em Sex, 2006-04-14 às 13:45 +0800, Rajesh Sathyamoorthy escreveu:
I wanted to know why it is more efficient to read a file in smaller
chunks ( using file() or open() )?
It's more efficient in some cases, and worse on others. It also depends
on how you implement the read loop. I won't elaborate
Em Qua, 2006-04-12 às 12:40 -0700, Raymond Hettinger escreveu:
* the existing alternatives are a bit perlish
I love this argument =D! perlish... lol...
Cheers,
--
Felipe.
--
http://mail.python.org/mailman/listinfo/python-list
Em Ter, 2006-04-11 às 06:49 -0700, looping escreveu:
But in an other hand,
I believe that new-style class are faster to instanciate (maybe I'm
wrong...).
$ python2.4 -m timeit -s 'class x: pass' 'x()'
100 loops, best of 3: 0.435 usec per loop
$ python2.4 -m timeit -s 'class x(object):
Em Ter, 2006-04-11 às 07:17 -0700, Aahz escreveu:
Can, yes. But should it? The whole point of adding the () option to
classes was to ease the learning process for newbies who don't
understand why classes have a different syntax from functions. Having
class C(): pass
behave differently
Em Ter, 2006-04-11 às 10:42 -0600, Steven Bethard escreveu:
one of::
del lst[:]
lst[:] = []
or if you don't need to modify the list in place,
lst = []
Personally, I tend to go Fredrik's route and use the first.
I love benchmarks, so as I was testing the options, I
Em Ter, 2006-04-11 às 18:55 +0200, Martin v. Löwis escreveu:
Dave Opstad wrote:
If I want to handle sets should I just use a dictionary's keys and
ignore the values, or is there some more explicit set support somewhere
I'm not seeing?
Indeed, there is. To create a new set, do
Em Ter, 2006-04-11 às 17:56 +, John Salerno escreveu:
Steven Bethard wrote:
lst[:] = []
lst = []
What's the difference here?
lst[:] = [] makes the specified slice become []. As we specified :, it
transforms the entire list into [].
lst = [] assigns the value [] to the
Em Ter, 2006-04-11 às 19:45 +0200, Peter Beattie escreveu:
I was wondering whether certain data structures in Python, e.g. dict,
might have limits as to the amount of memory they're allowed to take up.
Is there any documentation on that?
Why am I asking? I'm reading 3.6 GB worth of BLAST
Em Qua, 2006-04-12 às 11:36 +1000, Steven D'Aprano escreveu:
On Tue, 11 Apr 2006 19:15:18 +0200, Martin v. Löwis wrote:
Felipe Almeida Lessa wrote:
I love benchmarks, so as I was testing the options, I saw something very
strange:
$ python2.4 -mtimeit 'x = range(10); '
100 loops
Em Seg, 2006-04-10 às 10:38 -0500, Philippe Martin escreveu:
I understand that access can be accessed through an ODBC driver under
windows (instead of Jet).
I am wondering if the same can be done under Linux.
As far as I know, no. But there is that http://mdbtools.sourceforge.net/
that may
Em Seg, 2006-04-10 às 07:19 -0700, fyhuang escreveu:
class PythonClass:
private foo = bar
private var = 42
allow_readwrite( [ foo, var ] )
You are aware that foo and var would become class-variables, not
instance-variables, right?
But you can always do:
class PythonClass(object):
Em Seg, 2006-04-10 às 03:52 -0700, [EMAIL PROTECTED] escreveu:
My Tead Lead my object counter code seen below is not pythonic
As Peter said, you should really ask your Tead Lead, but what about:
class E(object):
Holds a class-wide counter incremented when it's instantiated.
count =
Em Seg, 2006-04-10 às 10:05 -0700, Lonnie Princehouse escreveu:
I happen to think the recursive version is more elegant, but that's
just me ;-)
It may be elegant, but it's not efficient when you talk about Python.
Method calls are expensive:
$ python2.4 -mtimeit 'pass'
1000 loops, best of
Em Seg, 2006-04-10 às 11:29 -0700, David Bear escreveu:
However, the except block does not seem to catch the exception and an
unboundlocalerror is thrown anyway. What am I missing?
See http://docs.python.org/tut/node10.html :
A try statement may have more than one except clause, to specify
1 - 100 of 208 matches
Mail list logo
