Hi everybody,
I need to downcast an object, and I've read repeatedly that if you
need to downcast, you did something wrong in the design phase. So,
instead of asking how do you downcast in python, let me explain my
situation.
I have a 2-pass parser. 1st pass ends up with a bunch of
Dear Emmanuel,
Thank you for your reply.
Actually what I want to do is, at the run time I want to know the location
of a specific directory.
Then I will add some file name to the path and load the file.
The directory can reside in any drive, depending on the user.
Well... If you don't
Dear All,
I want to get the absolute path of the Directory I pass explicitly. Like
functionName(\abcd).
I should pass the name of the directory and the function should search for
it in the Hard drives and return me the full path of location on the drive.
I tried using os.path, but didn't
Seebs usenet-nos...@seebs.net writes:
On 2010-10-13, Chris Rebert c...@rebertia.com wrote:
For future reference, the significant majority of things in Python
raise exceptions upon encountering errors rather than returning
error values of some sort.
Yes. I'm getting used to that
Is it possible to control any webbrowser from Python ? For example to
issue http POST and GET command
Thanks
Johny
http://docs.python.org/library/webbrowser.html
The control you get is rather limited, though. If your aim is interacting with
a website, though, you can try urllib/urllib2 for
On Oct 9, 5:41 pm, Stefan Behnel stefan...@behnel.de wrote:
Number of characters sounds like a rather useless measure here.
What I meant by number of characters was the number of edits happened
between the two versions..Levenshtein distance may be one way for
this..but I was wondering if
Matt Nordhoff wrote:
BTW: Checked out optparse? It's bigger and sexier!
If you're doing things with positional arguments, you should consider using
argparse (http://argparse.googlecode.com/svn/tags/r101/doc/index.html). It's
like optparse, but (much) better.
Cheers,
Emm
--
Emmanuel Surleau a écrit :
It still manages to retain flexibility, but you're basically stuck
with Django's ORM
You're by no way stuck with Django's ORM - you are perfectly free
not to use it. But then you'll obviously loose quite a lot of useful
features and 3rd part apps...
You
On Oct 20, 2009, at 4:59 PM, Emmanuel Surleau wrote:
Compared to custom tags in, say, Mako? Having to implement a mini-
parser for
each single tag when you can write a stupid Python function is
needless
complication.
I like Mako a lot and in fact web2py template took some inspiration
Emmanuel Surleau a écrit :
Emmanuel Surleau a écrit :
Django : very strong integration, excellent documentation and support,
huge community, really easy to get started with. And possibly a bit
more mature and stable...
One strong point in favour of Django: it follows Python's
Emmanuel Surleau a écrit :
Django : very strong integration, excellent documentation and support,
huge community, really easy to get started with. And possibly a bit more
mature and stable...
One strong point in favour of Django: it follows Python's philosophy of
batteries included
Django : very strong integration, excellent documentation and support,
huge community, really easy to get started with. And possibly a bit more
mature and stable...
One strong point in favour of Django: it follows Python's philosophy of
batteries included, and features a large array of
I am using primarily UTF-8 based strings, like Hindi or Bengali. Can I
use Python to help me in this regard?
I can say from experience that Python on Windows (at least, Python 2.5
on 32-bit Vista) works perfectly well with UTF-8 files containing
Bangla. I have had trouble with working
On Saturday 22 August 2009 08:13:33 joy99 wrote:
On Aug 22, 10:53 am, Stefan Behnel stefan...@behnel.de wrote:
Rami Chowdhury wrote:
I am using primarily UTF-8 based strings, like Hindi or Bengali. Can I
use Python to help me in this regard?
I can say from experience that Python on
Dr. Phillip M. Feldman wrote:
[snip]
def is_prime(n):
for j in range(2,n):
if (n % j) == 0: return False
return True
It seems as though Python is actually expanding range(2,n) into a list of
numbers, even though this is incredibly wasteful of memory. There should
be
It's a particular unfair criticism because the critic (Ethan Furman)
appears to have made a knee-jerk reaction. The some language in Python
behaviour he's reacting to is the common idiom:
for i in range(len(seq)):
do_something_with(seq[i])
instead of the Python in Python idiom:
for
On Friday 31 July 2009 18:54:23 Tim Rowe wrote:
2009/7/31 Steven D'Aprano st...@remove-this-cybersource.com.au:
On Thu, 30 Jul 2009 18:47:04 +0100, Tim Rowe wrote:
That and the fact that I couldn't stop laughing for long enough to learn
any more when I read in the Pragmatic Programmer's
On Friday 31 July 2009 19:49:04 Raymond Hettinger wrote:
On Jul 20, 9:27 am, Phillip B Oldham phillip.old...@gmail.com wrote:
Specifically the differences between lists and tuples have us
confused and have caused many discussions in the office. We
understand that lists are mutable and
On Friday 31 July 2009 21:55:11 Terry Reedy wrote:
Emmanuel Surleau wrote:
Beyond the mutable/hashable distinction, there is an important
philosophical distinction articulated by Guido. He deems tuples to
be useful for struct like groupings of non-homogenous fields and
lists to be useful
On Saturday 01 August 2009 03:46:12 Steven D'Aprano wrote:
On Fri, 31 Jul 2009 20:41:12 +0200, Emmanuel Surleau wrote:
We don't actually *declare* that something is constant and then have
that declaration ignored. Python doesn't lie to us, although (as in any
language) a programmer might
1.) No need to use () to call a function with no arguments.
Python -- obj.m2().m3() --ugly
Ruby -- obj.m1.m2.m3 -- sweeet!
Man, i must admit i really like this, and your code will look so much
cleaner.
It has benefits - code does look better. It has also significant cons - it is
On Friday 31 July 2009 01:06:31 Robert Kern wrote:
On 2009-07-30 16:44, r wrote:
On Jul 30, 4:29 pm, Emmanuel Surleauemmanuel.surl...@gmail.com
wrote:
1.) No need to use () to call a function with no arguments.
Python -- obj.m2().m3() --ugly
Ruby -- obj.m1.m2.m3 -- sweeet!
On Sunday 26 July 2009 00:42:26 Marcus Wanner wrote:
On 7/25/2009 10:08 AM, Piet van Oostrum wrote:
Steven D'Aprano st...@remove-this-cybersource.com.au (SD) wrote:
SD Ambiguity essentially boils down to being unable to reasonably
predict SD the expectation of the coder. I say reasonably,
On Friday 24 July 2009 17:14:06 you wrote:
Hrvoje Niksic hnik...@xemacs.org writes:
The term variable is used in the Python language reference and
elsewhere
Yes. It should also be abundantly clear from the constant stream of
confused newbies on this point that its usage of that term is
On Monday 27 April 2009 05:01:22 Carbon Man wrote:
I have a program that is generated from a generic process. It's job is to
check to see whether records (replicated from another system) exist in a
local table, and if it doesn't, to add them. I have 1 of these programs for
every table in the
On Saturday 25 April 2009 08:06:30 Carl Banks wrote:
In answering the recent question by Mark Tarver, I think I finally hit
on why Lisp programmers are the way they are (in particular, why they
are often so hostile to the There should only be one obvious way to
do it Zen).
Say you put this
On Monday 20 April 2009 01:48:04 Steven D'Aprano wrote:
The problem is, I believe, that people wrongly imagine that there is One
True Way of a language being object-oriented, and worse, that the OTW
is the way Java does it. (If it were Smalltalk, they'd at least be able
to make the argument
Allowing for procedural-style programming does not mean that a
language
does not implement (even imperfectly) an OO paradigm.
Allowing is the wrong term here. Python absolutely encourages a
straightforward procedural style when appropriate; unlike Java, there is
no attempt to force object
On Monday 20 April 2009 10:55:19 Steven D'Aprano wrote:
On Mon, 20 Apr 2009 08:05:01 +0200, Emmanuel Surleau wrote:
On Monday 20 April 2009 01:48:04 Steven D'Aprano wrote:
It also depends on whether you see the length of a data structure as a
property of the data, or the result
Hi there,
Exploring the Python standard library, I was surprised to see that several
packages (ConfigParser, logging...) use mixed case for methods all over the
place. I assume that they were written back when the Python styling
guidelines were not well-defined.
Given that it's rather
On Sunday 19 April 2009 19:37:59 Gabriel Genellina wrote:
En Sun, 19 Apr 2009 13:43:10 -0300, Emmanuel Surleau
emmanuel.surl...@gmail.com escribió:
Exploring the Python standard library, I was surprised to see that
several
packages (ConfigParser, logging...) use mixed case for methods all
Perhaps in statically typed languages. Python is dynamic, so a x.length()
requires a method lookup and that's expensive. len(x) on the contrary, can
be optimized on a case by case basis -- it DOESN'T translate to
x.__len__() as some might think.
See
On Sunday 19 April 2009 21:46:46 Christian Heimes wrote:
Emmanuel Surleau wrote:
First off, it's pretty commonplace in OO languages. Secondly, given the
number of methods available for the string objects, it is only natural to
assume that dir(a) would show me a len() or length() or size
What makes you think Python is an OO language?
Python is a dynamic object-oriented programming language that can be used
for many kinds of software development.
First line on the Python official website. Was this a trick question?
What kind of OO
language allows you to do this:
def
Hi
1) Is there anything like a Python build tool? (Or do I
even need something like that?)
If you're going to run the python source code, you don't need anything.
Python builds what it needs automagically. Some tools exist to build
stand-alone executables though, if you'd like to do so
Hi there, Ruby transfuge too.
Although I'm not 100% new to Python, most of my experience using high-
level languages is with Ruby. I had a job doing Rails web development
a little ways back and I really enjoyed it. At my current workplace
though, we're looking at using Python and I'm trying
Howdy,
I'm python newbie and i need to write gui for my school work in python.
I need to write it really quick, because i haven't much time .)
So question is, which of gui toolkits should i pick and learn? I heard
PyGTK and Glade are best for quick gui programming? Is it good for
beginner?
Hi there,
I'm starting an exploratory foray into Python, being generally dissatisfied
with the Ruby ecosystem (while the language is wonderful, third party
libraries and documentation are not).
Having written a few trivial scripts in Python, I'm curious as to how you
would sum up the Pythonic
On Saturday 11 April 2009 18:00:58 John Yeung wrote:
On Apr 11, 10:08 am, Emmanuel Surleau emmanuel.surl...@gmail.com
wrote:
Having written a few trivial scripts in Python, I'm curious as
to how you would sum up the Pythonic philosophy of development.
A couple of others have already
On Saturday 04 April 2009 15:37:44 grkunt...@gmail.com wrote:
I am a Java developer. There, I said it :-).
When I am writing code, I can rely on the compiler to confirm that
any methods I write will be called with parameters of the right
type. I do not need to test that parameter #1 really
40 matches
Mail list logo
