Hi Emile and John,
Thanks a lot for your insight. There is always a better way, or at least
a more pythonic one.
Take care.
Victor.
On Wed, 2006-02-08 at 22:36 -0800, Emile van Sebille wrote:
> "Andre Roberge" <[EMAIL PROTECTED]> wrote in message
>
> > There's a tongue-in-cheek quote that I rea
"Andre Roberge" <[EMAIL PROTECTED]> wrote in message
> There's a tongue-in-cheek quote that I really like:
> "Sometimes you have a programming problem and it seems like the best
> solution is to use regular expressions; now you have two problems."
+1 -- There are some things re is good for, but
On Wed, 8 Feb 2006, Kent Johnson wrote:
> OK. Suppose I have
Sigh. I was going too fast and, of course, I got ahead of myself.
> To use this class, I have to instantiate it:
> myDb = DB()
Yes, that's all in the example's __main__ and I didn't put it in my
application. Will do so right a
On 2/8/06, Danny Yoo <[EMAIL PROTECTED]> wrote:
>
>
> On Wed, 8 Feb 2006, Victor Bouffier wrote:
>
> > Hi to all,
> >
> > I'd like to split a long string into equally long strings (len(str) =
> > 3). I did the following using regexes:
> >
> > >>> n = 'xb1jyzqnd1eenkokqnhep6vp692qi9tmag3owzqw0sdq3zj
On Wed, 8 Feb 2006, Victor Bouffier wrote:
> Hi to all,
>
> I'd like to split a long string into equally long strings (len(str) =
> 3). I did the following using regexes:
>
> >>> n = 'xb1jyzqnd1eenkokqnhep6vp692qi9tmag3owzqw0sdq3zjf'
> >>> o = re.split(r'(...)', n)
> >>> print o
> ['', 'xb1', ''
Rich Shepard wrote:
> On Wed, 8 Feb 2006, Kent Johnson wrote:
>
>> Evidently closeDb is an instance method of some class you don't show
>> here.
>> Does DBinterface create and maintain a single instance of this class? or
>> some other code creates an instance?
>
>
> Kent,
>
> closeDB() is de
Alan Gauld wrote:
> The problem is that super appears to only work with single inheritance.
> There may be a way to makle it work for multiple inheritance by changing
> the second parameter but the documentration is a bit thin!!
That's ironic - super() is intended to ease some of the problems wit
On 09/02/06, Victor Bouffier <[EMAIL PROTECTED]> wrote:
> I'd like to split a long string into equally long strings (len(str) =
> 3). I did the following using regexes:
Remember that a string is just like a list (except that you can't modify it).
So, for instance:
>>> n = 'xb1jyzqnd1eenkokqnhep6
Hi to all,
I'd like to split a long string into equally long strings (len(str) =
3). I did the following using regexes:
>>> n = 'xb1jyzqnd1eenkokqnhep6vp692qi9tmag3owzqw0sdq3zjf'
>>> o = re.split(r'(...)', n)
>>> print o
['', 'xb1', '', 'jyz', '', 'qnd', '', '1ee', '', 'nko', '', 'kqn', '',
'hep'
> I realise teachers have to test mastery of certain techniques, but they
> seem to lack the imagination.
I agree; the problem here, I think, is that these homework questions often
focus WAY too much on Python-specific features, rather than on fundamental
issues, and so the questions end up feel
Hi Danny,
> That web site (http://thedailywtf.com) is amusing in its way, but my
> problem with it is that so many of the people there enjoy mocking others
> in a mean-spirited and immature way. Programming well is a hard thing.
> The adolescent posturing I see there isn't admirable to me. It's a
Why are these homework programming challenges so
recognisable? It boils down to:
Write a function that that uses X and Y techniques.
The function may be hard and challenging to write but
doesn't ever do anything interesting or anything that
is useful and complete on its own.
I realise teachers ha
On Wed, 8 Feb 2006, Kent Johnson wrote:
> Evidently closeDb is an instance method of some class you don't show here.
> Does DBinterface create and maintain a single instance of this class? or
> some other code creates an instance?
Kent,
closeDB() is defined in the class DBinterface. That's th
# This *FAILS* with AttributeError: 'FancyPublisher'
# object has no attribute 'listeners'
class FancyPublisher(threading.Thread, Publisher):
def __init__(self):
super(FancyPublisher, self).__init__()
F = FancyPublisher()
F.register('me', None)
---
The problem is that su
Rich Shepard wrote:
>In my wxPython application the UI is run out of class MyFrame. The method
> associated with File->Quit is called OnFileQuit. All the code for pysqlite is
> in another class called DBinterface, and that has a method closeDB():
>
>def closeDb(self):
> """
> Clo
Marcus Goldfish wrote:
> Hi,
>
> I ran across a strange problem using mulitple inheritance that I hope
> someone can explain. Basically, I am implementing a Publisher pattern,
> and when I try to add threading, the order I list Base classes matters!
> Here is the short sample code-- all help
On 09/02/06, kevin parks <[EMAIL PROTECTED]> wrote:
> And i am not sure i want to have to go through what will be hundreds of
> sound files and scale their ratings by hand so that they all add up to
> 100%. I just want to have a long list that i can add too whenever i
> want, and assign it a grade/
I am a little bit stuck
I want to play a bunch of soundfiles randomly, but i want to give each
soundfile a rating (say 0-100) and have the likelihood that the file be
chosen be tied to its rating so that the higher the rating the more
likely a file is to be chosen. Then i need some addit
> There must be something that I'm missing here.
Triuple quoted strings :-)
Take a look at my Databases topic for examples using SqlLite and
triple quotes for the queries.
Alan G
Author of the learn to program web tutor
http://www.freenetpages.co.uk/hp/alan.gauld
.
__
Michael Lange wrote:
> Sorry, I missed to insert the time.sleep(0.1) I used in my original while
> loop into the example above.
> The reason for using time.sleep() is that I need to avoid lots of loops over
> an empty buffer.
> The amount of time until the producer thread reads a new data fragmen
> I've got this:
>
> ---
> def isBottomDir(path):
> for item in os.listdir(path):
> if os.path.isdir(os.path.join(path,item)):
> return False
> return True
> ---
>
> Is that an acceptable way of doing this?
Hi Simon,
Your code looks good to me!
> I've been
In my wxPython application the UI is run out of class MyFrame. The method
associated with File->Quit is called OnFileQuit. All the code for pysqlite is
in another class called DBinterface, and that has a method closeDB():
def closeDb(self):
"""
Closes the database connection explic
> I have a few doubts in python programming. C if any of u can help me out.
Have no doubts - Python can do all of this.
> In a file called string_stuff.py i have to write a function called
> frequencies
> that takes a string as a parameter and returns a dictionary where the keys
> are the char
Hi,
I ran across a strange problem using mulitple inheritance that I hope someone can explain. Basically, I am implementing a Publisher pattern, and when I try to add threading, the order I list Base classes matters! Here is the short sample code-- all help explaining this is appreciated!
Th
On 09/02/06, Rich Shepard <[EMAIL PROTECTED]> wrote:
> self.cur.execute("CREATE TRIGGER fki_comp_cat BEFORE INSERT ON component
> FOR EACH ROW BEGIN SELECT RAISE(ROLLBACK, 'insert on table "category"
> violates foreign key constraint "fk_comp_cat"') WHERE NEW.comp_cat IS NOT
> NULL AND (SELECT
On Wed, 08 Feb 2006 13:47:39 -0500
Kent Johnson <[EMAIL PROTECTED]> wrote:
> > while self.recording:
> > data = []
> > while not self.rec_queue.empty():
> > try:
> >data.append(self.rec_queue.get(block=0))
> > except Queue.Empty:
> >
On Wed, 8 Feb 2006, Danny Yoo wrote:
> Odd. Can you show us that complaint? Show us the error string. There are
> several possibilities here, but I hate guessing. *grin* Show us the exact
> error message you're getting, and that'll hint at what's really going on.
>
> Normal string literals can'
On Wed, 8 Feb 2006, Rich Shepard wrote:
>I'm trying to understand how to write SQL statements using pysqlite.
> The problem is that if I use newlines to format the SQL statements as I
> would with straight SQLite or PostgreSQL, python complains because it
> sees the newline before the end of
> These sound like homework questions, in which case it would not be right
> for us to just give you the answer (and it would not be right for you to
> ask for it).
Agreed; these are not small questions at all. Natasha, if you're having
trouble, please be more specific about what you're getting
I'm trying to understand how to write SQL statements using pysqlite. The
problem is that if I use newlines to format the SQL statements as I would
with straight SQLite or PostgreSQL, python complains because it sees the
newline before the end of the quoted string.
So, I make the CREATE TABLE
On Wed, 8 Feb 2006, le dahut wrote:
> I've Python 2.4.1 installed and 'setup.py' doesn't recognize the
> '--record-rpm' option :
> "error: option --record-rpm not recognized"
>
> The patch including this feature is available since a long time so
> what's happening ?
Hi Le Dahut,
You may be bet
[Raymond Hettinger]
> ...
> The asymmetric handling of denormals by the atof() and ftoa() functions is
> why you see a difference. A consequence of that asymmetry is the breakdown
> of the expected eval(repr(f))==f invariant:
Just noting that such behavior is a violation of the 754 standard for
s
Michael Lange wrote:
> On Wed, 08 Feb 2006 08:37:18 -0500
> Kent Johnson <[EMAIL PROTECTED]> wrote:
>>child thread 2:
>>
>> while self.recording:
>> data = self.rec_queue.get()
>> for d in data:
>> self._waveobj.writeframesraw(d)# write data to file
>
On Wed, 08 Feb 2006 08:37:18 -0500
Kent Johnson <[EMAIL PROTECTED]> wrote:
> Another architecture you might consider is to have thread 1 put the
> actual acquired buffers into two Queues that are read by the two
> consumer threads. This would save you a lot of copying and give you a
> cleaner i
These sound like homework questions, in which case it would not be right for
us to just give you the answer (and it would not be right for you to ask for
it).
If you can show us what you have tried so far, maybe we can give you some
hints ...
From: [EMAIL
Hi, I have a few doubts in python programming. C if any of u can help me out. 1. In a file called string_stuff.py i have to write a function called frequencies that takes a string as a parameter and returns a dictionary where the keys are the characters from the string and each value is
Michael Lange wrote:
> On Tue, 7 Feb 2006 23:31:06 +0100
> Michael Lange <[EMAIL PROTECTED]> wrote:
>
>
>>So I think I need two Condition objects here; it is most important here that
>>thread 1 does not
>>block to minimize the risk of recording buffer overruns, but from reading the
>>docs I am
Simon Gerber wrote:
> I've got this:
>
> ---
> def isBottomDir(path):
> for item in os.listdir(path):
> if os.path.isdir(os.path.join(path,item)):
> return False
> return True
> ---
>
> Is that an acceptable way of doing this? I've been reading
> http://thedail
I've Python 2.4.1 installed and 'setup.py' doesn't recognize the
'--record-rpm' option :
"error: option --record-rpm not recognized"
The patch including this feature is available since a long time so
what's happening ?
K.
___
Tutor maillist - Tutor
On Tue, 7 Feb 2006 23:31:06 +0100
Michael Lange <[EMAIL PROTECTED]> wrote:
>
> So I think I need two Condition objects here; it is most important here that
> thread 1 does not
> block to minimize the risk of recording buffer overruns, but from reading the
> docs I am
> not sure about the correc
guy wrote:
> I would like to understand how one can right unit test cases using python
> and how to utilize them on a giving application.
There are several Python packages that help to automate Windows GUI
applications. These could be used to write tests.
winguiauto has the basics
http://www.br
[Smith]
>I just ran into a curious behavior with small floating points, trying to
>find the limits of them on my machine (XP). Does anyone know why the '0.0'
>is showing up for one case below but not for the other? According to my
>tests, the smallest representable float on my machine is much sm
hi all.
I am working with a list and would like to choose from the list
randomly but not uniformly. I am interested in several distributions
but the first one i looked at is Gaussian.
which you call like so:
random.gauss(mean, dev)
You can try this code courtesy of effbot (http://effbot.org
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