Lawrence D'Oliveiro a écrit :
In message <20101021235138.609fe...@geekmail.invalid>, Andreas Waldenburger
wrote:
While not very commonly needed, why should a shared default argument be
forbidden?
Because it’s safer to disallow it than to allow it.
Then there are quite a few python features
jk a écrit :
Hi,
I've been coding in PHP and Java for years, and their documentation is
concise, well structured and easy to scan.
Others have mentioned this apparently for years (see:
http://stackoverflow.com/questions/4046166/easy-to-navigate-online-python-reference-manual/4070851
and http://
Stefan Schwarzer a écrit :
> One could argue that using L[::-1] isn't "obvious"
It *is* obvious - once you've learned slicing. "obvious" doesn't mean
you shouldn't bother reading the FineManual.
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jimgardener a écrit :
> hi Steven,
> can you explain that?I didn't quite get it.
> I have a module say 'managerutils' where I have a class
> MyManager..
What Steven was talking about was to NOT use a class at all. Modules are
objects and have their own namespace. And you can use threading.locals
i
John O'Hagan a écrit :
How to call a function with the right arguments without knowing in advance
which function?
(snip)
For most use case I can think of, I can only second Steven and Chris -
if your functions are interchangeable then they should have a same API.
Now there's at least one u
Lawrence D'Oliveiro a écrit :
Next we need an International Surfin’ Bird day, a day to go around and tell
everybody that the bird bird bird, the bird is the word.
+1
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harryos a écrit :
hi
I have 2 lists of numbers,say
x=[2,4,3,1]
y=[5,9,10,6]
I need to create another list containing
z=[2*5, 4*9, 3*10, 1*6] ie =[10,36,30,6]
I did not want to use numpy or any Array types.I tried to implement
this in python .I tried the following
z=[]
for a,b in zip(x,y):
Steven D'Aprano a écrit :
On Mon, 20 Sep 2010 09:27:25 +0200, Bruno Desthuilliers wrote:
If the class has a .__setattr__ method, the first bypasses that method,
It also bypasses object.__setattribute__ and - as a consequence - any
binding descriptor by the same name as the attribute bein
Niklasro a écrit :
Good to learn what I'm doing :-) since important being able to explain
choices taken farther than "doing it because it works".
I understand the concept of modules may not correspond to java
programming where I come from.
Coming from Java - and specially if you only have exper
alex23 a écrit :
Python only actually executes a module the first time it's imported,
Beware of multithreading and modules imported under different names...
There can be issues with both in some web frameowrks.
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Terry Reedy a écrit :
On 9/19/2010 1:37 PM, mafeu...@gmail.com wrote:
Hallo Group Members. From time to time I see in python code following
notation that (as I believe) extends namespace of MyClass.
No, it does not affect MyClass, just the instance dict.
class MyClass:
def __init__(sel
Hans a écrit :
(snip)
Maybe I did not make my question clear. I never tried python web
programing before, so I want to start from CGI.
You can indeed learn quite a few things doing raw CGI - the most
important one being why frameworks are a good idea !-)
I read something about web framewor
Diez B. Roggisch a écrit :
lallous writes:
How can I keep the class private and have the following work:
[code]
class __internal_class(object):
@staticmethod
def meth1(s):
print "meth1:", s
@staticmethod
def meth2(s):
print "meth2:",
__internal_class.m
Steven D'Aprano a écrit :
I have some code that currently takes four different classes, A, B, C and
D, and subclasses each of them in the same way:
class MyA(A):
def method(self, x):
result = super(MyA, self).method(x)
if result == "spam":
return "spam spam spam"
bussiere bussiere a écrit :
i v'e got this :
i've got toto.py :
import titi
def niwhom():
pass
and titi.py :
def nipang():
pass
how can i know in titi.py that's it's toto.py that is calling titi.py
and the path of toto ?
how can i inspect the call
Steven D'Aprano a écrit :
On Mon, 06 Sep 2010 00:57:30 +0200, bussiere bussiere wrote:
i've got a python.txt that contain python and it must stay as it
(python.txt)
Why? Is it against the law to change it? *wink*
how can i include it in my program ?
import python.txt doesn't work
You co
Baba a écrit :
"Dear xyz,
Your question can easily be researched online. We suggest you give it
a try and to look it up yourself. This will be beneficial both to you
and to us. We do encourage to ask questions only when they have been
researched first."
On usenet - as well as on most technical
Phlip a écrit :
> On Sep 7, 10:36 am, Ian Kelly wrote:
>> On Tue, Sep 7, 2010 at 10:02 AM, Phlip wrote:
>>> Back to the topic, I tend to do this:
>>> for record in Model.objects.filter(pk=42):
>>> return record
>>> return sentinel
>> How is that any better than just catching the exception?
Phlip a écrit :
> On Sep 7, 10:12 am, Bruno Desthuilliers 42.desthuilli...@websiteburo.invalid> wrote:
>> Phlip a écrit :
>>
>>> Back to the topic, I tend to do this:
>>> for record in Model.objects.filter(pk=42):
>>> return record
>>&g
Phlip a écrit :
Back to the topic, I tend to do this:
for record in Model.objects.filter(pk=42):
return record
return sentinel
WTF alert here...
Having lots of short methods helps, because return provides both
control-flow and a result value. But it abuses 'for' to mean 'if'. I
fee
bussiere bussiere a écrit :
i've got toto.py :
import titi
def niwhom():
pass
and titi.py :
def nipang():
pass
how can i know in titi.py that's it's toto.py that is calling titi.py
and the path of toto ?
You'd have to inspect the call stack. Not for the faint at heart...
And
w
Ian Hobson a écrit :
(snip)
you may also want to read the recent "using modules" thread...
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Phlip a écrit :
How does that compare to, say, the "Kamikaze Principle"? ;)
Return victorious AND not at all!
(All return values are packed up and thrown...;)
... and then it raises a SystemError !-)
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Baba a écrit :
Hi
I am working on an exercise which requires me to write a funtion that
will check if a given word can be found in a given dictionary (the
hand).
def is_valid_word(word, hand, word_list):
"""
Returns True if word is in the word_list and is entirely
composed of letter
Baba a écrit :
(snip)
If i had
received a friendly response from Benjamin (as opposed to "Please do
us a favor and at least try to figure things out on your own")
According to usenet standards and given your initial question, this is a
_very_ friendly answer.
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Ian Hobson a écrit :
Hi all you experts,
This has me beat. Has anyone any ideas about what might be going wrong?
This is code from within a windows service (hence no print statements -
no sys.stdout to print on!).
I am trying to trace through to find where the code is not working. No
stdout
Jason a écrit :
On Sep 5, 3:53 pm, Peter Otten <__pete...@web.de> wrote:
m = gio.File(".").monitor_directory()
C = type(m)
'C' will not necessarily be 'gio.FileMonitor' — I think the internals
of the GIO methods might further "subclass" it in some way depending
on what underlying monitors are
Peter Otten a écrit :
n = 1
def f():
... global n
... try:
... return n
... finally:
... n += 1
...
The same without a global:
def f(_n=[0]):
try:
return _n[0]
finally:
_n[0] += 1
But yeps, using a generator would be better.
--
ht
Dave Angel a écrit :
(snip)
or (untested)
def is_palindrom(s):
s = s.lower()
return s == s[::-1]
Right, go on, make me feel a bit more stupid :-/
Who's next ?
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Richard Arts a écrit :
Now there is another solution. A palindrom is made of two symetric halves,
with (odd len) or without (even len) a single char between the symetric
halves, ie :
* odd : ABCBA ('AB' + 'C' + 'BA')
* even : ABCCBA ('ABC' + 'CBA')
So you just have to extract the symetric halve
Baba a écrit :
level: beginner
the following code looks ok to me but it doesn't work.
"doesn't work" is about the most useless description of a problem.
Please specify what you expected and what actually happens.
I would like
some hints as to where my reasoning / thought goes wrong
def i_
BartC a écrit :
"Steven D'Aprano" wrote in
message news:4c6f8edd$0$28653$c3e8...@news.astraweb.com...
On Fri, 20 Aug 2010 17:23:23 +0200, Bruno Desthuilliers wrote:
I onced worked in a shop (Win32 desktop / accouting applications mainly)
where I was the only guy that
Tim Daneliuk a écrit :
On 8/19/2010 7:23 PM, Steven D'Aprano wrote:
On Thu, 19 Aug 2010 18:27:11 -0500, Tim Daneliuk wrote:
Problem:
Given tuples in the form (key, string), use 'key' to determine what
string method to apply to the string:
table = {'l': str.lower, 'u': str.upper}
table['u
Steven D'Aprano a écrit :
On Fri, 20 Aug 2010 17:23:23 +0200, Bruno Desthuilliers wrote:
Steven D'Aprano a écrit :
On Thu, 19 Aug 2010 22:00:16 +, Martin Gregorie wrote:
Recursion can be quite a trick to get your mind round at first
Really? Do people actually find the *c
Michel Claveau - MVP a écrit :
Salut !
C'est cela, la solitude du programmeur génial...
@-salutations
Moi aussi je t'aime, Michel !-)
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Steven D'Aprano a écrit :
On Thu, 19 Aug 2010 22:00:16 +, Martin Gregorie wrote:
Recursion can be quite a trick to get your mind round at first
Really? Do people actually find the *concept* of recursion to be tricky?
I onced worked in a shop (Win32 desktop / accouting applications main
Rony a écrit :
It looks like I forgot to specify that the product is a totaly new
product build from scratch, not an upgrade from an existing product.
Still the advice to first find out what went wrong with the previous
project is a very sensible one. Technical problems do exist, but from
ex
Stefan Schwarzer a écrit :
Hi Neil,
On 2010-08-17 14:42, Neil Cerutti wrote:
(snip)
Looking through my code, the split-up lines almost always include
string literals or elimination of meaningless temporary
variables, e.g.:
self.expiration_date = translate_date(find(response,
Steven D'Aprano a écrit :
Oh my ... I've seen people writing Java in Python, C++ in Python, Perl in
Python, even VB in Python, but this is the first time I've meet some one
who wants to write assembler in Python :)
+1 QOTW
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Vikas Mahajan a écrit :
On 16 August 2010 19:23, Nitin Pawar wrote:
you would need to define a class first with its attiributes and then you may
want to initiate the variables by calling the class initilializer
Actually I have to dynamically add attributes to a object. I am
writing python scr
blur959 a écrit :
Hi, all, Is there a way to get a number of files in a particular
directory? I tried using os.walk, os.listdir but they are return me
with a list, tuple of the files, etc. But I want it to return a
number. Is it possible?
len(any_sequence)
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geremy condra a écrit :
(about eclipse+pydev)
Or you could use a text editor and a terminal and spare yourself the
agony of dealing with 600MB of Java of questionable quality ;).
+1 QOTW
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ph4nut a écrit :
Hi all,I am learning Quixote a few days ago,,,and i have no idea about
whether there is any Google Group talking about Quixote,so i post this
post to check that is Quixote been talking in this group before or can
i ask question about Quixote here!
From the project's home page:
Johan a écrit :
Dear all,
Considering this test program:
def tst(a={}):
Stop here, we already know what will follow !-)
And yes, it's one of Python's most (in)famous gotchas : default
arguments values are computed only once, at function definition time
(that is, when the def statement is e
Gregory Ewing a écrit :
Ethan Furman wrote:
Instead of using 'is' use '=='. Maybe not as cute, but definitely
more robust!
It's also just as efficient if you use strings that
resemble identifiers, because they will be interned,
Remember : this IS an implementation detail.
--
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Richard D. Moores a écrit :
On Thu, Aug 5, 2010 at 16:15, Rhodri James wrote:
On Thu, 05 Aug 2010 17:07:53 +0100, wheres pythonmonks
wrote:
You're not testing for equivalence there, you're testing for identity. "is"
and "is not" test whether the two objects concerned are (or are not) the
s
Chris Hare a écrit :
I have a database query result (see code below). In PHP, I would have said
list(var1,var2,var) = $result
Other already answered on the Python equivalent. But there's an IMHO
better way, which is to use (if the DB-API connector provides it) a
DictCursor, that yields dict
Roald de Vries a écrit :
'not None' first casts None to a bool, and then applies 'not', so 'x is
not None' means 'x is True'.
Obviously plain wrong :
Python 2.6.2 (release26-maint, Apr 19 2009, 01:56:41)
[GCC 4.3.3] on linux2
Type "help", "copyright", "credits" or "license" for more informat
Gregory Ewing a écrit :
(snip)
import weakref
class weakmethod(object):
def __init__(self, bm):
self.ref = weakref.ref(bm.im_self)
self.func = bm.im_func
def __call__(self, *args, **kwds):
obj = self.ref()
if obj is None:
raise ValueError("Calling dead weak method")
wheres pythonmonks a écrit :
Thanks ... I thought int was a type-cast (like in C++) so I assumed I
couldn't reference it.
Python has no C/C++ like "type-cast". "int" is the builtin integer type,
and instanciating an object in Python is done by calling it's type.
Remember that in Python, every
Ethan Furman a écrit :
Bruno Desthuilliers wrote:
Bruno Desthuilliers a écrit :
Ethan Furman a écrit :
Bruno Desthuilliers wrote:
Duncan Booth a écrit :
(snip)
Or you could create the default as a class attribute
from the OP:
"""
I have a class (FuncDesigner oofun) that h
Grant Edwards a écrit :
On 2010-07-27, Bruno Desthuilliers
wrote:
Daniel Fetchinson a ?crit :
(snip)
Why was clearing a terminal left out?
What you're talking about is a shell, not a terminal (a terminal is a
physical device).
No, what he's talking about is clearing a term
Daniel Fetchinson a écrit :
Hi folks,
If I'm only interested in linux and windows I know I can do
import os
import platform
if platform.system( ) == 'Linux':
clear = 'clear'
else:
clear = 'cls'
os.system( clear )
or so
Bruno Desthuilliers a écrit :
Ethan Furman a écrit :
Bruno Desthuilliers wrote:
Duncan Booth a écrit :
(snip)
Or you could create the default as a class attribute
from the OP:
"""
I have a class (FuncDesigner oofun) that has no attribute "size", but
it is overloa
Ethan Furman a écrit :
Bruno Desthuilliers wrote:
Duncan Booth a écrit :
(snip)
Or you could create the default as a class attribute
from the OP:
"""
I have a class (FuncDesigner oofun) that has no attribute "size", but
it is overloaded in __getattr__, so if someo
Peng Yu a écrit :
Hi
I'm still kind of confused about the terminology on classes in python.
Could you please let me know what the equivalent terms for the
following C++ terms?
C++ and Python having very different semantics and object models,
there's not necessarily a straight one to one mapp
be.krul a écrit :
Why not moderate this group?
This is a hi-traffic group, so it would require a huge team of moderators.
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Duncan Booth a écrit :
Bruno Desthuilliers wrote:
If you don't want to create as many Whatever instances as MyClass
instances, you can create a single Whatever instance before defining
your class:
DEFAULT_WHATEVER = Whathever()
class MyClass(object):
def __init__(self,
dmitrey a écrit :
(snip)
This doesn't stack with the following issue: sometimes user can write
in code "myObject.size = (some integer value)" and then it will be
involved in future calculations as ordinary fixed value; if user
doesn't supply it, but myObject.size is involved in calculations, the
Gilles Ganault a écrit :
> Hello
>
> I'd like to write a small web app in Python which must include a
> forum.
>
> So I checked the relevant article in Wikipedia, which says that only
> one forum app is available for Python:
>
> http://en.wikipedia.org/wiki/Comparison_of_internet_forum_software_
Les Schaffer a écrit :
> i have been asked to guarantee that a proposed Python application will
> run continuously under MS Windows for two months time. And i am looking
> to know what i don't know.
(snip)
> but none of this has anything to do with Python itself. i am sure python
> servers have b
kedra marbun a écrit :
On Jul 7, 2:46 am, Bruno Desthuilliers
wrote:
Gregory Ewing a écrit :
Bruno Desthuilliers wrote:
kedra marbun a écrit :
if we limit our discussion to py:
why __{get|set|delete}__ don't receive the 'name' & 'class' from
__{getattribute|{
Gregory Ewing a écrit :
> Bruno Desthuilliers wrote:
>> kedra marbun a écrit :
>>
>>> if we limit our discussion to py:
>>> why __{get|set|delete}__ don't receive the 'name' & 'class' from
>>> __{getattribute|{set|del}attr}
kedra marbun a écrit :
On Jul 5, 3:42 pm, Bruno Desthuilliers wrote:
kedra marbun a écrit :
i'm confused which part that doesn't make sense?
this is my 2nd attempt to py, the 1st was on april this year, it was
just a month, i'm afraid i haven't got the fundamentals rig
kedra marbun a écrit :
i'm confused which part that doesn't make sense?
this is my 2nd attempt to py, the 1st was on april this year, it was
just a month, i'm afraid i haven't got the fundamentals right yet. so
i'm gonna lay out how i got to this conclusion, CMIIW
**explanation of feeling (0) on
kedra marbun a écrit :
> if we limit our discussion to py:
> why __{get|set|delete}__ don't receive the 'name' & 'class' from
> __{getattribute|{set|del}attr}__
> 'name' is the name that is searched
While it would have been technically possible, I fail to imagine any use
case for this.
--
http:/
Matthew Vernon a écrit :
> Hi,
>
> Is there a more idiomatic way of loading in a configuration file
> that's python code than:
>
> _temp=__import__(path,fromlist='cachestrs')
> cachestrs=_temp.cachestrs
>
> ? I mean, that's pretty ugly...Plain "import" doesn't work in this
> case because 'path'
WANG Cong a écrit :
On 06/30/10 01:25, Ethan Furman wrote:
But if so why setattr() still exists? What is it for if we can do the
same thing via assignments? Also, in order to be perfect, Python should
accept to add dynamic attributes dynamically, something like PEP
363. That doesn't happen.
S
WANG Cong a écrit :
On 07/01/10 23:19, Stephen Hansen wrote:
As long as setattr() exists in Python, that will be not so ordinary. :)
setattr is perfectly ordinary.
If you think setattr() is as ordinary as a trivial assignment,
setattr IS a trivial assignment.
However, I think setattr(
D'Arcy J.M. Cain a écrit :
On Thu, 01 Jul 2010 14:07:27 +0200
Bruno Desthuilliers wrote:
And AFAICT you're wrong. I read and post to c.l.py using my newsreader
(so NOT going thru GG), and my personal address is @gmail.com.
But...
From: Bruno Desthuilliers
Sorry, there&#
Stephen Hansen a écrit :
On 6/30/10 10:37 PM, Aahz wrote:
In article<4c29ad38$0$26210$426a7...@news.free.fr>,
Bruno Desthuilliers wrote:
Aahz a écrit :
In article<4c285e7c$0$17371$426a7...@news.free.fr>,
Bruno Desthuilliers wrote:
Aahz a écrit :
In article<4c2747
egbert a écrit :
Normally you use setattr() if the name of the attribute is in a
namestring:
setattr(self, namestring, value)
But my attributes are lists or dictionaries, and I don't seem to be
able to use setattr anymore.
Python 2.6.2 (release26-maint, Apr 19 2009, 01:56:41)
[GCC 4.3.3] on
D'Arcy J.M. Cain a écrit :
On Wed, 30 Jun 2010 14:06:05 -0700
Stephen Hansen wrote:
Gmail and Google Groups are not one and the same. There's a number of
people who subscribe to the list directly, use Gmail, and don't go
anywhere near Google Groups.
I know that. My filter doesn't catch them
Aahz a écrit :
In article <4c285e7c$0$17371$426a7...@news.free.fr>,
Bruno Desthuilliers wrote:
Aahz a écrit :
In article <4c2747c1$0$4545$426a7...@news.free.fr>,
Bruno Desthuilliers wrote:
Python has no pretention at "elegance".
That's not true at all. More pr
Alexander Kapps a écrit :
(snip)
While I personally don't agree with this proposal (but I understand why
some people might want it), I can see a reason.
When disallowing direct attribute creation, those typos that seem to
catch newcommers won't happen anymore. What I mean is this:
class Foo(
Carl Banks a écrit :
On Jun 27, 3:49 am, Bruno Desthuilliers
wrote:
WANG Cong a écrit :
On 06/26/10 00:11, Neil Hodgson wrote:
WANG Cong:
4) Also, this will _somewhat_ violate the OOP princples, in OOP,
this is and should be implemented by inherence.
Most object oriented programming
Aahz a écrit :
In article <4c2747c1$0$4545$426a7...@news.free.fr>,
Bruno Desthuilliers wrote:
Python has no pretention at "elegance".
That's not true at all. More precisely, I would agree with you if the
emphasis is on "pretention" but not if the emphasis i
WANG Cong a écrit :
> On 06/26/10 00:11, Neil Hodgson wrote:
>
>> WANG Cong:
>>
>>> 4) Also, this will _somewhat_ violate the OOP princples, in OOP,
>>> this is and should be implemented by inherence.
>>Most object oriented programming languages starting with Smalltalk
>> have allowed adding
WANG Cong a écrit :
> On 06/25/10 17:25, Steven D'Aprano
> wrote:
>
>> On Fri, 25 Jun 2010 14:15:12 +0100, WANG Cong wrote:
>>
(snip)
>>> 4) Also, this will _somewhat_ violate the OOP princples, in OOP, this is
>>> and should be implemented by inherence.
>> Perhaps, and perhaps not. But Python h
WANG Cong a écrit :
(snip)
>
> The point is why making metaprogramming easy is wonderful?
Because it makes life easier ?-)
> AND, even if
> it were wonderful, why only this one, i.e. creating attributes by
> assignments, not other things?
Like :
class Test(object):
a = 1
del Test.a
?-)
WANG Cong a écrit :
> On 06/25/10 15:34, Bruno Desthuilliers
> wrote:
>
>> WANG Cong a écrit :
>>> Hi, list!
>>>
>>> I have a doubt about the design of dynamic attribute creation by
>>> assignments in Python.
>>>
>>> As we
WANG Cong a écrit :
Hi, list!
I have a doubt about the design of dynamic attribute creation by
assignments in Python.
As we know, in Python, we are able to create a new attribute of
a class dynamically by an assignment:
class test: pass
...
test.a = "hello"
test.a
'hello'
However, I still
Li Hui a écrit :
> When I add enctype="text/plain" to a post form like method="post" enctype="text/plain">, there is a "CSRF verification
> failed." error.
> But when I remove it, all is right.
> Who can tell me why?
>
http://groups.google.com/group/django-users
http://catb.org/esr/faqs/smart-qu
Vlastimil Brom a écrit :
Many thanks for your insights!
Just now, I am the almost the only user of this script, hence the
consequences of version mismatches etc. shouldn't (directly) affect
anyone else, fortunately.
So far so good.
However, I'd like to ask for some clarification about monkey
Dennis Lee Bieber a écrit :
(snip - about Tkinter IntVar type)
It is NOT a numeric "variable" in Python realms.
So var+=increment can't be used because Python would rebind the name
var to a new object -- but Tkinter would still be hooked to the original
object and never see the
Mag Gam a écrit :
I have been using python for about 1 year now and I really like the
language. Obviously there was a learning curve but I have a programing
background which made it an easy transition. I picked up some good
habits such as automatic code indenting :-), and making my programs
more
Neil Webster a écrit :
Thanks for the help so far.
The background to the problem is that the lists come from reading a
dbf file. The code that I am trying to write is to merge lines of the
dbf based on the first column. So in my example there would be three
lines:
a 2 3 4
b 10 11 12
a 2 3 4
T
Victoria Hernandez a écrit :
The new mision I herits the buggered code (i do not the bugger). How
do debugger him? Tahnk you very much. Vikhy :)
http://docs.python.org/library/pdb.html#module-pdb
http://docs.python.org/library/unittest.html#module-unittest
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Vlastimil Brom a écrit :
Hi all,
I'd like to ask about the most reasonable/recommended/... way to
modify the functionality of the standard library module (if it is
recommended at all).
(snip)
However, I'd like to ask, how to best maintain this modified
functionality in the sourcecode.
I tried
Neil Webster a écrit :
Hi all,
I've got a simple problem but it's defeated me and I was wondering if
somebody could point out where I'm going wrong
1/ not posting working code (got a NameError)
2/ not posting the expected output
3/ not posting the actual output
or offer an alternative
soluti
Jerry Rocteur a écrit :
(snip)
As part of learning Python, I'm also learning OOP! That is why I want to know
if this is doable using classes.
>
The input is not important, I end up with the dictionary as described in the
question and as I asked in the question,
I'd like to access the dictiona
News123 a écrit :
Hi,
So far I never really had to ask this question and this is also, why I
am stil a little shaky on this topic:
So far the typical LAMP server existed already and contained already a
lot of existing PHP web applications, which I couldn't remove.
Therefore I just used mod_pyt
Bruno Desthuilliers a écrit :
Christoph Groth a écrit :
Bruno Desthuilliers writes:
(snip)
In C++
Forget about C++ - Python is a different beast !-)
Still, it is useful and interesting to compare languages.
Indeed. But you have to understand enough of a language to compare it
with
Christoph Groth a écrit :
Bruno Desthuilliers writes:
It seems to me that in this way I might get problems when I pass an
instance of Derived_from_my_type to bar, as it will become an
instance of My_type.
The instance you pass to bar won't "become" anything else. You creat
someone a écrit :
On Jun 18, 2:05 pm, Bruno Desthuilliers wrote:
(snip)
Still has a "code smell" thing to me, but hard to say not knowing the
real code and context.
sorry, code is not about printing variables rather accessing, it's
just example.
Yeps, this I understood -
Christoph Groth a écrit :
Dear all,
sometimes it is handy to have a function which can take as argument
anything which can be converted into something, e.g.
def foo(arg):
arg = float(arg)
# ...
I would like to mimic this behavior of float for a user-defined type,
e.g.
def bar(arg):
someone a écrit :
On Jun 18, 12:49 pm, James Mills wrote:
On Fri, Jun 18, 2010 at 8:31 PM, someone wrote:
I was looking for a "short way" to do it because I have a lot
"some_object.attr.attr or some_object.other_attr.attr" in code. it
looks like I cannot replace attr with just other variable
Andreas Tawn a écrit :
On 06/17/2010 01:04 AM, Stephen Hansen wrote:
On 6/16/10 10:40 PM, madhuri vio wrote:
if i want to create a button
which performs the transcription of dna to rna
(snip the GUI part)
Seems like a simple problem... or am I missing something?
def translate():
return
Matteo Landi a écrit :
Some weeks ago, here on the mailing list I read about picloud[1], a
python library used for cloud-computing; I was impressed by its
simplicity, here is an example:
import cloud
def square(x):
... return x * x
cloud.call(square, 10)
cloud.result()
100
So, I tried to f
On Sun, Jun 13, 2010 at 4:07 PM, bolega wrote:
I am trying to compare LISP/Scheme/Python for their expressiveness.
Scheme is actually a lisp, isn't it ?
For this, I propose a vanilla C interpreter. I have seen a book which
writes C interpreter in C.
The criteria would be the small size a
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