Hendrik van Rooyen ha scritto:
> But more seriously - is there any need for a simple serialiser that will
> be able to be used to transfer a subset of the built in types over an
> open network in a safe manner, for the transfer of things like lists of
> parameters?
Yes, there seems to be a need f
Ricardo Aráoz ha scritto:
> L = ['one', 'two', 'three', 'four', 'five']
>
> print L[0]# This would be 'head'
> print L[1:] # This would be 'tail'
>
> Caution : L[0] and L[1:] are COPIES of the head and tail of the list.
This might surprise people who see L[1:] = [], since changing a copy
Py-Fun wrote:
> I'm stuck trying to write a function that generates a factorial of a
> number using iteration and not recursion. Any simple ideas would be
> appreciated.
As opposed to what, a complicated one?
--
http://mail.python.org/mailman/listinfo/python-list
Py-Fun wrote:
> def itforfact(n):
> while n<100:
> print n
> n+1
> n = input("Please enter a number below 100")
You function should probably return something. After that, you can see
what happens with the result you get.
--
http://mail.python.org/mailman/listinfo/python-list
From the cookbook, this time.
It satisfies the requirements nicely ;)
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/496691
def tail_recursion(g):
'''
Version of tail_recursion decorator using no stack-frame
inspection.
'''
loc_vars ={"in_loop":False,"cnt":0}
Robert Rawlins - Think Blue wrote:
> That certainly looks to be the type of thing that I'm looking to achieve,
> however, I forgot to mention I'm running this on a Linux platform and not a
> Win32 one :-( Sorry.
Did you try python-gamin?
"Gamin is a file and directory monitoring system defined
Tim Golden wrote:
>> From the cookbook, this time.
>> It satisfies the requirements nicely ;)
>>
>> http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/496691
>
> [... snip the ultimate general-purpose answer to the OP's question ...
>
> I really hope that's a wink up there, Marco.
The wi
Tim Chase wrote:
fact = lambda i: i > 1 and reduce(mul, xrange(1, i+1)) or not
> i and 1 or None
>
> Stunts like this would get a person fired around here if they
> were found in production code :)
eheh, indeed.
def fact(n):
try:
return eval('*'.join(str(x) for x in range(1,
Roberto Bonvallet wrote:
> import urllib
> import re
> urllib.URLopener.version = "Mozilla/4.0"
>
> def fact(x):
> r = re.compile(r"%d ! = (\d+)" % x)
> for line in urllib.urlopen("http://www.google.cl/search?q=%d%%21"; % x):
> m = r.search(line)
> if m:
> retu
[EMAIL PROTECTED] wrote:
> Needs work.
Uh... ok.. this one gives an exception ;-)
def fact(n):
try:
return eval('*'.join(str(x) for x in range(1,n+1)))
except:
return n>=0 or ValueError
print fact(-1)
--
http://mail.python.org/mailman/listinfo/python-list
[EMAIL PROTECTED] wrote:
> class fact_0(object):
> value = 1
[...
> def __new__(self, n_):
> class spanish_inquisition(object):
> __metaclass__ = fact_meta
> n = n_
> return spanish_inquisition()
You wrote lots o
Nick Craig-Wood wrote:
> Note you can write your middle loop as
>
> for i in range(I):
> number = myNumer[:]
> random.shuffle(number)
> if number == myNumer:
> count+=1
Nice. Try 'em all, then count 'em.
Another wtfery would be a SQLAlchemy solution, gene
Wolfgang Keller wrote:
> so far it seems to me as if the only ORM module for Python which
> supports composite primary/foreign keys was SQLAlchemy. Which looks a
> little bit "overbloated" for my needs: I "just" need to be able to
> define a "logical model" (à la UML) in Python and have the ORM
John Machin wrote:
> For that purpose, CSV files are the utter pox and then some. Consider
> using xlrd and xlwt (nee pyexcelerator) to read (resp. write) XLS
> files directly.
xlwt is unreleased (though quite stable, they say) at the moment, so the
links are:
easy_install xlrd
svn co https://s
massimo s. wrote:
> As for people advicing xlrd/xlrwt: thanks for the useful tip, I didn't
> know about it and looks cool, but in this case no way I'm throwing
> another dependency to the poor users of my software. Csv module was
> good because was built-in.
The trouble with sending CSV files to
Bruno Desthuilliers wrote:
> As far as I'm concerned, anyone (I mean, anyone pretending to be a
> programmer) being ignorant enough to ask such a question ranks high in
> my bozo list. Don't waste time with bozos.
Alan Kay said it well enough without using words like "pretending",
"ignorant"
[EMAIL PROTECTED] wrote:
> 10 days is not enough. But I don't have any more clarity in my Python
> classes than I did in Java.
You do when you start using classes the python way, and do things that
are not even thinkable in java or any static language.
--
http://mail.python.org/mailman/listinfo
Ben Finney wrote:
>> I realise that double underscores make the language conceptually
>> cleaner in many ways (because fancy syntax and operator overloading
>> are just handled by methods), but they don't *look* nice.
>
> That's a good thing, in that it draws attention to the names.
Well, double
Sergio Correia wrote:
> I don't get this thread. At all. I want my 15 minutes back.
I think it's a sort of Turing test, to fine-tune some spammer's text
generating algorithm.
--
http://mail.python.org/mailman/listinfo/python-list
Robert Bossy wrote:
> Indeed! Maybe the best choice for chunksize would be the file's buffer
> size... I won't search the doc how to get the file's buffer size because
> I'm too cool to use that function and prefer the seek() option since
> it's lighning fast regardless the size of the file and
Steve Holden wrote:
3. I can't be certain my experience with PostgreSQL extends to MySQl,
but I have done experiments which prove to my satisfaction that it isn't
possible to parameterize LIKE arguments. So the only way to do it
appears to be to build the query yourself.
Or using Postgres thro
The Music Guy wrote:
Just out of curiousity, have there been any attempts to make a version
of Python that looks like actual English text?
Many have tried that in the decades, but IMHO the best approach is to
just rename the language. We cannot do that since it's already been
trademarked fo
Hussein B wrote:
I'm creating a report that is supposed to harvest the data for the
previous month.
So I need a way to get the first day and the last day of the previous
month.
Would you please tell me how to do this?
Thanks in advance.
dateutil can do this and much, much more.
>>> from date
Carsten Haese wrote:
In order to not deprive you of the sense of accomplishment
Sorry for spoiling that. If you still want the sense of accomplishment,
try to reimplement dateutil (and rrule). It's not as easy as it seems :-o
--
http://mail.python.org/mailman/listinfo/python-list
Carsten Haese wrote:
dateutil can do this and much, much more.
Using dateutil for this is like using a sledgehammer to kill a fly. The
task at hand can (and IMHO should) be solved with the standard datetime
module.
Sure, but many python programmers are not even aware of the existence of
tha
Mudcat wrote:
This is something I've wondered about for a while. I know that
theoretically Python is supposed to auto-recognize duplicate imports;
however I've run into problems in the past if I didn't arrange the
imports in a certain way across multiple files.
I think you've probably had issu
Phillip B Oldham wrote:
Can you recommend an ORM (or similar) package to look into?
SQLAlchemy with reflected tables. You can use straight SQL, generate it
dynamically via python expressions, go with the ORM, or everything
together (in a bucket :)
It really pays due respect to the RDBMS, and
Thorsten Kampe wrote:
This scenario is highly "supposing" and doesn't look like a real-world-
case to me. But anyway: the obvious solution in my humble opinion would
be to do something like "public_attribute = _private_attribute". But
that would be too simple, too "unjavaesque", right?!
Yes,
Russ P. wrote:
highlighting. Not that it really helps much, but it "spices up" the
code and stimulates the eyes and brain. When I see the same code
without color highlighting, it just seems bland, like something is
missing. It seems like just "text" rather than "code."
Plus, it can be configur
Pat wrote:
Why didn't you answer the len() question?
It's a bit of a FAQ: len() cannot be a method of list objects because it
works on any sequence or iterable.
--
http://mail.python.org/mailman/listinfo/python-list
azrael wrote:
I know that there is already a standard python library, But
why not extending it. classify the standard library into subcategories
like Networking, DataBase, Computation, ..
If the standard library where that huge, python 3.0 would have been late
by a couple of years.
Why
News123 wrote:
I would just like to retrieve all the field names and default values of
a form. (Some forms are huge) and wondered thus whether there's already
a python module parsing a html documents for forms , form fields and
field vaules, returning an objcet. that could be modified and posted
Steve Holden wrote:
In fact all that's really happened is that Perl has slid down the ranks,
at least temporarily. Python has been around the 6/7 mark for a while now.
Also.. can someone attempt to explain the funny correlation in
popularity over time between, for instance, Python and Delphi?
George Sakkis wrote:
This is all very good, but don't drink the design pattern Kool-Aid and
start pushing design patterns everywhere. (Not everything needs to be a
singleton. No, really.)
Obligatory reading: http://www.mortendahl.dk/thoughts/blog/view.aspx?id=122
By the way, it's a fact that
Steven D'Aprano wrote:
Gosh Lawrence, do tell, which category do YOU fall into?
I suppose a mix-up between a cowbody (or Fonzie) coder and a troll.
His programs have an inner poetry that we're obviously too stupid to
understand.
--
http://mail.python.org/mailman/listinfo/python-list
Giampaolo Rodola' wrote:
The real (and still unsolved) problem with PyPy is the installation
which requires something like a dozen of third-party packages to be
installed.
Unfortunately it seems there are no plans yet for releasing any
Windows/Linux/Mac installer in the near future.
I'm not us
Filip Gruszczyński wrote:
I am not doing it, because I need it. I can as well use "if not elem
is None",
I suggest "if elem is not None", which is not quite the same.
If you slip such an error in a post, I suggest to practice some time
writing correct code before having one-liner contests w
Kirk Strauser wrote:
So what's the difference exactly? "foo is not None" is actually surprising
to me, since "not None" is True. "0 is True" is False, but "0 is not None"
is True. Why is that?
Cause I was tired of course, and got the not precedente not right!! Argh
--
http://mail.python.org
psaff...@googlemail.com wrote:
The problem is that IDPointSet and MicroArrayPointSet will need to
inherit from PointSet or TraceablePointSet based on whether I'm
handling traceable points or not. Can I select a superclass
conditionally like this in Python? Am I trying to do something really
evil
Marco Mariani wrote:
I think you should investigate something different than subclassing,
like a "Strategy" domain pattern or something similar.
s/domain/design/
--
http://mail.python.org/mailman/listinfo/python-list
walterbyrd wrote:
I have read that python is the world's 3rd most popular language, and
that python has surpassed perl in popularity, but I am not seeing it.
In 20 days, you've gone from trying to import a module by using:
> load "test.py"
to questioning the popularity of python.
You have
Richard Riley wrote:
One does not have to by a language maestro to try and assess its
popularity. While his numbers or his reading of the numbers might be
open to some questions, to suggest that one needs to be totally familiar
with a language to determine its popularity is, frankly, ridiculous.
gu wrote:
I see, but how does django-admin work, then?
from bash:
complete -W "doSomething doSomethingElse doSomethingDifferent" myProgram
--
http://mail.python.org/mailman/listinfo/python-list
Shawn Milochik wrote:
> I'm not claiming it's bulletproof, but it works. I just kind of came
up with all the
methods off of the top of my head, so if anyone has any suggestions
for more elegant or efficient code, please let me know.
Yes it's in Python alright, but it's not Pythonese yet. You
Ghirai wrote:
I need to keep x number of instances of an external applications
running, say /bin/x, but also kill and restart each one after y seconds.
What would be the best way to do this (with python 2.5.x)?
easy_install supervisor
it should do everything for you
--
http://mail.python.org
vibgyorbits wrote:
l=map(lambda x: '%02x' %ord(x),d)
s=string.join(l,sep='')
PS#. Endedup learning little bit of Lambda functions. :-)
That's so 2007...
The 2.5-esque way to write that is
s = ''.join('%02x' % ord(x) for x in d)
--
http://mail.python.org/mailman/listinfo/python-list
Fab86 wrote:
Is it possible to get the program to catch the exception, wait 10
seconds, then carry of from where it was rather than starting again?
something like this? probably works in PASCAL as well :)
i=0
while i < len(stuff):
try:
do_with(stuff[i])
except SomeError:
s
Steven D'Aprano wrote:
You can have one, or the other, but not both, unless you're willing
to have a "practicality beats purity" trade-off and create a second way of
grouping blocks,
I propose /* and */ as block delimiters.
There, you have auto-documenting code, ahah!
--
http://mail.python.o
Lie Ryan wrote:
Python is Turing Complete
Well, actually no, because it doesn't support an infinite amount of memory.
Add this to "things to check before wasting a lot of money in hardware".
--
http://mail.python.org/mailman/listinfo/python-list
Tim Wintle wrote:
Python is Turing Complete
Well, actually no, because it doesn't support an infinite amount of memory.
Surely you can address an infinite amount of storage using infinite
length integers and a wrapper to files on disk - then it's just your
OS's limits that hold it back - so p
ZikO wrote:
Do you think python would be good complementary language for C++? Do you
think it's worth learning it
Absolutely, but it tends to become the first language over time.
Don't underestimate its reach. I've re-learned Python 3 or 4 times
already, over 11 years :-/
--
http://mail.py
John O'Hagan wrote:
Is there a concise Pythonic way to write a method with a timeout?
No need for threading. Just define a signal handler and call signal.alarm().
See the example at the end of the page:
http://docs.python.org/library/signal.html
--
http://mail.python.org/mailman/listinfo/pyt
plsulliv...@gmail.com wrote:
I have several functions which I would like to store in a different
directory so several programs can use them. I can't seem to find much
information about how to call a function if the function code is not
actually in the script itself.
read the tutorial, look for
Lobo wrote:
I now have a new project to develop web applications using the latest/
best possible versions of Python (3.x?) with PostgreSQL (8.x?, with
pgAdmin 1.10?).
You want to use Python 2.5.x (or 2.6 if your framework of choice already
supports it), Postgres 8.3 and have a look at SQLAlch
venutaurus...@gmail.com wrote:
for k in range (1,1001):
...
k = k+1
Man, you have a trouble with loops, all over.
--
http://mail.python.org/mailman/listinfo/python-list
venutaurus...@gmail.com wrote:
for k in range (1,1001):
...
k = k+1
Man, you have a trouble with loops, all over.
But the situation demands it.:-(
No. I mean, the for loops are wrong.
Compare with the following and see why
import os
base = '/tmp/foo'
for outer in x
someone wrote:
Also, for SQL, (A) why are you using nested joins?, and
inner select produce smaller set which is then joined with other
table, kind a optimization
Did you time it?
I've done some "kind of a optimization" that slowed queries by tenfold,
because postgres didn't need my advice,
pranav wrote:
I am sure there is a python way of solving this problem.
The common sense approach (nothing to do with python) would be to
rewrite everything to be dynamically generated with a template language
- in python those would be TAL, mako, genshi, jinja, whatever ...
anything is bett
pranav wrote:
I am sure there is a python way of solving this problem.
The common sense approach (nothing to do with python) would be to
rewrite everything to be dynamically generated with a template language
- in python those would be TAL, mako, genshi, jinja, whatever ...
anything is better t
Paddy O'Loughlin wrote:
All of the audience will be experienced (4+ years) programmers, almost
all of them are PHP developers (2 others, plus myself, work in C, know
C#, perl, java, etc.).
Show them the same classical design patterns in Java and Python. Explain
how it's much more flexible.
hayes.ty...@gmail.com wrote:
My first thought is to do a sweep, where the first sweep takes one
line from f1, travels f2, if found, deletes it from a tmp version of
f2, and then on to the second line, and so on. If not found, it writes
to a file. At the end, if there are also lines still in f1 t
Marco Mariani wrote:
while True:
a = filea.readline()
b = fileb.readline()
if not (a or b):
break
BTW, watch out for this break. It might not be what you want :-/
--
http://mail.python.org/mailman/listinfo/python-list
Dave Angel wrote:
If the lines are really sorted, all you really need is a merge,
D'oh. Right. The posted code works on unsorted files. The sorted case is
even simpler as you pointed out.
--
http://mail.python.org/mailman/listinfo/python-list
Marco Mariani wrote:
If the lines are really sorted, all you really need is a merge,
For the archives, and for huge files where /usr/bin/diff or difflib are
not appropriate, here it is.
#!/usr/bin/env python
import sys
def run(filea, fileb):
p = 3
while True:
if p&
Piet van Oostrum wrote:
funclist = [func01, func02, func03, ... ]
for i in range(1,n):
funclist[i]()
Or myscript.funclist[i]() from another module.
Ehm, calling a bazillion things in the right order should be a
responsibility of the myscript module anyway.
--
http://mail.python.org/mai
Michael Torrie wrote:
http://www.u.arizona.edu/~rubinson/copyright_violations/Go_To_Considered_Harmful.html
Somebody better tell the Linux kernel developers about that! They
apparently haven't read that yet. Better tell CPU makers too. In
assembly it's all gotos.
I'm sure you are joking.
baykus wrote:
those "lines" as numbered steps or numbered bricks that are sitting on
eachother but I see them as timelines or like filmstrips. Anyways it
sounds like such a toy programming language does not exists except
Arnaud surprisingly efficient code. and I will search my dream
somewhere e
BlueBird wrote:
I have a program that manages several thousands instances of one
object. To reduce memory
consumption, I want of course that specific object to have the
smallest memory footpring possible.
Have you thought of using something like the flyweight pattern and a
compact data repres
Dr Mephesto wrote:
Why are the class files I created not seeing the top namespace?
Because it's how python works. What you think is a top namespace, it's
not "at the top". It's just the namespace of the module you run the
program with. You must import numpy from the all the modules that make
Dr Mephesto wrote:
ok, sorted. I had thought that when a module was imported, it was
added to a larger shared namespace used by all the modules.
Now, that would be awfulll
Because one of the most important things about python (and the reason I
can live without an IDE) is that I can point my
Mark wrote:
e.g. see http://docs.python.org/library/index.html
Please tell me this is a mistake? 3.X docs are the same.
Looks ok. What do you see?
--
http://mail.python.org/mailman/listinfo/python-list
David Lyon wrote:
What if I decide to write only to Python 3?
Fair enough. But don't forget it is open source.
So what?
Let me ask these two questions...
- What about the use case where somebody likes the code and wants
to use it on Python 2.5?
A patch, a fork, whatever.
- Should
Carbon Man wrote:
Py 2.5
Trying to write a string to a file.
self.dataUpdate.write(u"\nentry."+node.tagName+ u" = " + cValue)
cValue contains a unicode character. node.tagName is also a unicode string
though it has no special characters in it.
So what's the encoding of your file?
If you didn
Jeremy Banks wrote:
I've read those discussion before, but somehow never made the
connection between those and this. I'll give that article a read, it
probably details exactly the perspective I'm looking for. Thank you!
You could also read this:
http://unlimitednovelty.com/2009/03/indentation
Scott David Daniels wrote:
I am afraid it will make it too easy to define functions in other
modules remotely, a tempting sharp stick to poke your eye out with.
It's not very hard at the moment, and I don't see lots of eyes flying
by. I don't know about Ruby where monkeypatching seems to be c
Ulrich Eckhardt wrote:
t = Test()
if (t == 'Vla':
print t # must contain Vla
What's wrong with that?
It unnecessarily injects the name 't' into the scope.
Since there is no concept in Python of a scope local to block
statements, I don't understant what you would like to happen instead
Scott David Daniels wrote:
I don't remember who, but something famously said, in effect:
Debugging is hard, maybe twice as hard as writing the code in
the first place. Unless you are one of those nonexistent few
He would be the K in K&R.
--
http://mail.python.org/mailman/listinfo/pyth
Rahul wrote:
1) Do you have any idea about web based support (like mod_python)
provided by python.org (official web site)
Details: - As we know mod_python is used for embeding python code into
apache server.
so, i want to know whether mod_python is officially supported by
python.org or if there
djc wrote:
Python 2.5.2 (r252:60911, Oct 5 2008, 19:29:17)
geohash(37.421542, -122.085589, b'2005-05-26-10458.68')
^
SyntaxError: invalid syntax
The byte type is new in 2.6
--
http://mail.python.org/mailman/listi
Bruno Desthuilliers wrote:
Lawrence D'Oliveiro a écrit :
What is the rationale for considering all instances true of a user-
defined type?
It's a stupid idea,
Nope, it's a very sensible default (given you can redefine the
'nothingness' value of your types instances), specially when the
norseman wrote:
The posting needs (its creation) ... DATE. ... The code needs to state
OS and program and version used to write it. And from there - user
beware."
Which would reduce the confusion greatly. I got the same error message
and decided it was from an incompatible version, using
Mario wrote:
I used JCreator LE, java IDE for windows because, when I add documentation
of some new library, I have it on a F1 and index. So how you manage
documentation and code completion ? I asume that you are geek but not even
geeks could know every method of every class.
What you call
Leon wrote:
One way, define the object before it is used,
like this:
object = None
This is a good practice anyway. Conditional existance of objects is
quite evil. Resorting to if defined('foo') is double-plus-ugly.
The other way, using try ... catch
try:
object.method()
catch NameEr
Leon wrote:
So I need to go back to the module including "parent" class
to define the objects that I maybe use in future as None,
You can assign them to a placeholder, with a method that always exists
but does nothing.
class NullObject(object):
def method(self, *args, **kw):
pas
Matthew Wilson wrote:
consensus. I could os.popen, commands.getstatusoutput, the subprocess
module, backticks, etc.
Backticks do_not_do what you think they do.
And with py3k they're also as dead as a dead parrot.
--
http://mail.python.org/mailman/listinfo/python-list
Mike Driscoll wrote:
I've never used (or heard of) the Abstract type...and the guy who
wrote the FAQ was being a jerk.
Who, Peter Norvig?
(from wikipedia)
Peter Norvig is an American computer scientist. He is currently the
Director of Research (formerly Director of Search Quality) at Google
daniele wrote:
Si è concluso ieri la pycon tre, è stata molto interessante, un bel
evento per una bella comunità.
Sempre meglio.. anche se mi preoccupa un po' un eventuale cambio di location
Ho visto con grande piacere, oltre all'incremento dei partecipanti,
anche un sensibile incremento del
Bruno Desthuilliers wrote:
Oh, you meant the "return type" ? Nope, no way. It just doesn't make
sense given Python's dynamic typing.
I thought that the OP was writing a tool to document not-very-dynamic code.
Unless he's really trying to write in Nohtyp, the language where value
types are mo
Gediminas Kregzde wrote:
def doit(i):
pass
def main():
a = [0] * 1000
t = time()
map(doit, a)
print "map time: " + str(time() - t)
Here you are calling a function ten million times, build a list with of
ten million None results, then throw it away.
def main2():
t =
Steve Ferg wrote:
I periodically think of that blog, usually in circumstances that make
me also think "Boy, that guy really got it right". But despite
repeated and prolonged bouts of googling I haven't been able to find
the article again. I must be using the wrong search terms or
something.
D
timh wrote:
However strange things happen to the name passed to __getitem__ in the
following example (and in fact in all varients I have triend the name/
key passed to __getitem__ is always the integer 0
I think it's scanning the container as a sequence and not as a mapping,
hence the access
Chris Rebert wrote:
On the other hand there are developers who much prefer to keep things
light-weight and simple.
Would it be fair to say the first type tends to congregate in herds,
particularly in corporate IT departments, while the latter tends to operate
on a more individual basis?
That
Mitchell L Model wrote:
def lookupxy(x, y):
if y:
conn.execute("SELECT * FROM table WHERE COL1 = ? AND COL2 = ?",
(x, y))
else:
conn.execute("SELECT * FROM table WHERE COL1 = ? AND COL2 IS NULL",
(x,))
walterbyrd wrote:
> I am sure this is totally simple, but I missing something.
Do you know what a dictionary is?
--
http://mail.python.org/mailman/listinfo/python-list
Stefan Behnel wrote:
http://www.polystyle.com/features/python-beautifier.jsp
I've never used it, but the example is quite clear.
I tend to believe that running these tools on some average Python code would
not even change whitespace. ;)
I bet it's idempotent against _your_ code, but not in
pistacchio wrote:
On 12 Mag, 10:01, alex23 <[EMAIL PROTECTED]> wrote:
On May 12, 5:17 pm, pistacchio <[EMAIL PROTECTED]> wrote:
hi to all!
can i load a module passing to it, automatically and as default, all
the caller's global variables to act as module's global variables?
Are you positivel
notbob wrote:
frustrated and give up on learning programming, not really caring much for
coding, anyway. But, dammit, I'm gonna stick with it this time. I'll learn
python if it kills me!
No, it won't kill you but make you stronger ;)
--
http://mail.python.org/mailman/listinfo/python-list
[EMAIL PROTECTED] wrote:
Is that true that this comparison operators are gone in Python 3.0:
<(is less than)
(is greater than)
<= (is less than or equals)
= (is greater than or equals)
Is it true?
Nope.
--
http://mail.python.org/mailman/listinfo/python-list
alefajnie wrote:
class B:
this_is_common_for_all_instances = []
def __init__(self, v):
self.this_is_common_for_all_instances.append(v)
now I can create some instances of B, but all of them have the same
array, why
Because you didn't reassign the attribute
'this_is_
[EMAIL PROTECTED] wrote:
We have to avoid the use of the 'is' identity operator with basic,
immutable values such as numbers and strings.
I'm glad for you. Did you really write checks like "if foo is 27" ?
The point is, you have to learn technologies to use them. It's not like
technologies l
1 - 100 of 148 matches
Mail list logo
