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.
Sa
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 object"s?
--
Felipe.
--
http://mail.python.org/mailman/listinfo/python-li
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 su
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, s
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 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 ar
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)
Out
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 ga
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
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
pr
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 wi
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 applica
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):
s
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.
--
http://mail.python.org/mailman/listinfo/python-
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 wha
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 26 Dec 2006 04:22:38 -0800, placid <[EMAIL PROTECTED]> wrote:
> So do you want to remove "&" or replace them with "&" ? 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 & that
would become
This & this & that
No, i
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 causi
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 ==
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
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) Loop[numberToBi
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 o
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 mel
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
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 descr
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 thr
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 =)
--
Fel
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 cau
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: s
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
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 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 s
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 s
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/Invok
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
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 th
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 st
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
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" in
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
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, b
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 i
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 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.
>
> >&g
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 =
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 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.
--
http://mail.pytho
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
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
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 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 l
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.
--
http://mail.python.org/mailman/listinfo
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()):
> >
>
> true, but it has different semantic meanings
>
I know, that's also
Em Dom, 2006-05-21 às 17:11 +0200, Heiko Wundram escreveu:
> for node in tree if node.haschildren():
>
>
> as syntactic sugar for:
>
> for node in tree:
> if not node.haschildren():
> continue
>
Today you can archive the same effect
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.
--
http://mail.python
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 "
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 m
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 ValueErr
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 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: http://docs.python.org/lib/module-decimal
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 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 t
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 plai
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
>>> fi
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(
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 th
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 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 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]]
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) p
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 Stop
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
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
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
>
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)
A
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
> ... bloc
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
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 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 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
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.
--
http://mail.python.o
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(" ", "")'
1
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 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:
> >>
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 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 []
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 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 op
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 differ
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): pa
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 specif
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 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."""
co
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(objec
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 ma
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