2008/12/17 Terry Reedy tjre...@udel.edu:
Nodes only have single number indexes if you arrange them linearly. Then the
index depends on how you arrange them, whether you start the array indexes
with 0 or 1, and whether you start the level numbers with 0 or 1. Call the
breadth-first sequence
Hi,
I'm searching for a clear explanation of binary tree properties,
expecially the ones related to logarithms.
For example, I know that in a tree with 2n-1 nodes, we have log(n)
levels, from 0 to log(n).
So, if k is the level, the nodes on a level have indexes between 2^k
and 2^(k+1)-1.
For k=0
2008/12/16 feba feb...@gmail.com:
Stuff like code.google, sf.net, are more oriented towards serious
development, not just holding random apps, aren't they?
Anyway, I found MediaFire, which looks like it will suffice for now.
Take a look to Dropbox (http://www.getdropbox.com/).
You can use it
2008/11/21 harijay [EMAIL PROTECTED]:
Hi
I am a few months new into python. I have used regexps before in perl
and java but am a little confused with this problem.
I want to parse a number of strings and extract only those that
contain a 4 digit number anywhere inside a string
However the
Hi,
I'm trying the nose testing package. I've just started reading the
tutorial and I had a problem with the first simple example.
This is the test:
def test_b():
assert 'b' == 'b'
In the same directory I gave the command nosetests and it runs the test.
Then I try with nosetests -v, but it
On Thu, Nov 20, 2008 at 13:34, Ben Finney
[EMAIL PROTECTED] wrote:
Mr.SpOOn [EMAIL PROTECTED] writes:
Searching on google I found this: http://www.siafoo.net/article/61
He had the same issue and said to change permission of the file to 664.
Unit test modules, which are primarily meant to be
On Wed, Nov 19, 2008 at 1:50 PM, Jeremiah Dodds
[EMAIL PROTECTED] wrote:
If you need to do it on the extremely cheap, you can host on your own
machine on a port other than 80, make sure your router / firewall is
forwarding the port to your machine, and use dyndns (http://dyndns.com) to
give
On Wed, Nov 19, 2008 at 1:35 PM, Jeremiah Dodds
[EMAIL PROTECTED] wrote:
Personally, I prefer a host that gives me root on a box (or virtual
machine). I've had a great time with slicehost (http://slicehost.com).
Yes, I knew about slicehost, but it is expensive for what I need to
do, that is
On Wed, Nov 19, 2008 at 2:39 AM, Mensanator [EMAIL PROTECTED] wrote:
Another hobby I have is tracking movie box-office receipts
(where you can make interesting graphs comparing Titanic
to Harry Potter or how well the various sequels do, if Pierce
Brosnan saved the James Bond franchise, what
On Wed, Nov 19, 2008 at 3:41 PM, Philip Semanchuk [EMAIL PROTECTED] wrote:
I'm not sure why you'd need to host the Python code anywhere other than your
home computer. If you wanted to pull thousands of pages from a site like
that, you'd need to respect their robots.txt file. Don't forget to
I think I've found a nice way to represent and build chords. At least,
at the moment it satisfy me, maybe later I'll understand how it sucks.
I'm using two separate classes: one represent a chord and is
implemented as a set of Notes; the other represents the structure
(type) of the chord and is a
On Tue, Nov 18, 2008 at 1:59 AM, Gabriel Genellina
[EMAIL PROTECTED] wrote:
Yes, __cmp__ is gone in 3.0
You said you wrote __cmp__ the same as __eq__ and that's wrong, they return
different results. Try something like this (untested):
class X:
def __init__(self, a): self.a = a
def
It seems that I solved my main problem, but I still have some doubt.
I'll make an example:
class foo:
...def __init__(self, a):
...self.a = a
...
f = foo(1)
f2 = foo(2)
f3 = foo(3)
f1 = foo(1)
s = set()
s.add(f)
s
set([__main__.foo instance at 0x8311fac])
s.add(f2)
On Mon, Nov 17, 2008 at 8:30 PM, Terry Reedy [EMAIL PROTECTED] wrote:
Sets and dicts use __hash__ and __eq__ together, as documented.
If a class does not define an __eq__() method it should not define a
__hash__() operation either; (3.0 manual, but same earlier).
Well, maybe, but in the docs,
On Sun, Nov 16, 2008 at 7:21 AM, Lawrence D'Oliveiro
[EMAIL PROTECTED] wrote:
In message [EMAIL PROTECTED], Mr.SpOOn
wrote:
C 9 is a base chord plus a the ninth note, but this implies the
presence of the seventh too, so it results in: C E G B D
I don't recall such meanings in the chord
Hi,
I'm trying to create a class which inherit a list to change some behavior.
This list should contain other instance objects and has to manage
these instances in a particular way.
1) I need to sort this elements in this list, but they must be sorted
using an instance variable. What does Python
On Sun, Nov 16, 2008 at 7:15 PM, Arnaud Delobelle
[EMAIL PROTECTED] wrote:
Mr.SpOOn [EMAIL PROTECTED] writes:
Hi,
I'm trying to create a class which inherit a list to change some behavior.
This list should contain other instance objects and has to manage
these instances in a particular way.
Hi,
I've never used exception before, but I think now it's time to start.
I've seen that there is a list of the built-in exceptions in the
Python docs, but this explains the meaning of every exception. Does
exist an inverted list? I mean, how may I know what kind of exception
is going to raise
Hi,
I'm writing a method to create musical chords.
This method must follow a specific set of syntax rules. At least, this
is my idea, but maybe there's a better way.
Anyway, in the code I have class Chord which is a set.
The costrunction of a chord is based on a root note and a structure,
so by
Thanks, I just have to choose which one to use :)
--
http://mail.python.org/mailman/listinfo/python-list
Hi,
is there any way to search elements in a list using wildcards?
I have a list of various elements and I need to search for elements
starting with 'no', extract them and put in a new list.
I was thinking about something like:
mylist.index('no*')
Of course this doesn't work.
--
On Sun, Nov 9, 2008 at 12:29 AM, Stef Mientki [EMAIL PROTECTED] wrote:
Qt seems to be good, but I don't like their licence.
What's the problem with qt licence?
--
http://mail.python.org/mailman/listinfo/python-list
On Thu, Nov 6, 2008 at 11:00 PM, Ben Finney
[EMAIL PROTECTED] wrote:
Yes, the main reason is that it kills duck typing. The initialiser
should *use* the parameters passed, and allow exceptions to propagate
back to the caller if the parameters don't behave as expected.
Another good reason to
On Fri, Nov 7, 2008 at 4:16 PM, Duncan Booth
[EMAIL PROTECTED] wrote:
There is a really big advantage to being explicit in this situation: you no
longer have to make sure that all your constructors use a unique set of
types. Consider:
class Location(object):
def __init__(self, lat, long):
On Thu, Nov 6, 2008 at 11:00 PM, Ben Finney
[EMAIL PROTECTED] wrote:
Yes, the main reason is that it kills duck typing. The initialiser
should *use* the parameters passed, and allow exceptions to propagate
back to the caller if the parameters don't behave as expected.
Another good reason to
On Fri, Nov 7, 2008 at 7:02 PM, Marc 'BlackJack' Rintsch [EMAIL PROTECTED]
wrote:
What if I need the parse method to be called in other parts of the
program?
I don't understand!? Then you call it from those other parts.
Yes, you're right. Don't know why, but I was thinking to use
On Wed, Nov 5, 2008 at 10:03 PM, Arnaud Delobelle
[EMAIL PROTECTED] wrote:
Only hashable objects can go in a set. By default a class you define is
not hashable (unless it descends from a hashable class). To remedy this
you can define a __hash__ method in your class. IIRC the only
Hi,
I know there can be only one __init__ method (at least, I think).
Often I need an object to be created in different ways, for example
passing a string as argument, or an integer, or another object. To
achieve this I put the default value of the arguments to None and then
I some if...elif
On Thu, Nov 6, 2008 at 4:59 PM, Marc 'BlackJack' Rintsch [EMAIL PROTECTED]
wrote:
class A(object):
def __init__(self, a, b, c):
self.a = a
# ...
@classmethod
def from_string(cls, s):
# ...
return cls(a, b, c)
Thanks.
I think it's time to study
On Thu, Nov 6, 2008 at 7:44 PM, Tim Golden [EMAIL PROTECTED] wrote:
While that's no bad thing, you don't really need to do
that simply to understand these examples: they're just
saying do whatever you need to to make these method
class methods, not instance methods.
Yes.
I think this changes
Hi,
I have a problem with this piece of code:
class NoteSet(OrderedSet):
def has_pitch(self):
pass
def has_note(self):
pass
class Scale(NoteSet):
def __init__(self, root, type):
self.append(root)
self.type = type
ScaleType(scale=self)
On Wed, Nov 5, 2008 at 6:59 PM, Diez B. Roggisch [EMAIL PROTECTED] wrote:
You need to call the __init__ of NoteSet inside Scale, as otherwise the
instance isn't properly initialized.
Thanks, solved.
--
http://mail.python.org/mailman/listinfo/python-list
The discussion's gone a bit off topic so I don't know if it is a good
idea to continue here. I'll try.
My first question was about a way to order a python set. Someone
suggested to try this module:
http://code.activestate.com/recipes/528878/
It seemed pretty good, but I've tried it just today
On Tue, Nov 4, 2008 at 5:20 AM, Joe Strout [EMAIL PROTECTED] wrote:
We've got a need to generate short samples of songs that are in MIDI
format, to provide a preview function in a web app. We'd like to do
something more clever than just taking the middle 20 seconds (or whatever)
of the song
On Sat, Nov 1, 2008 at 1:57 AM, Lawrence D'Oliveiro
[EMAIL PROTECTED] wrote:
In message [EMAIL PROTECTED], Rob
Williscroft wrote:
Read (and bookmark) this:
http://www.python.org/doc/2.5.2/lib/re-syntax.html
Funny how you never get a thank-you when you tell people to RTFM.
My fault :\
I
Hi,
I'd like to use regular expressions to parse a string and accept only
valid strings. What I mean is the possibility to check if the whole
string matches the regex.
So if I have:
p = re.compile('a*b*')
I can match this: 'aabbb'
m = p.match('aabbb')
m.group()
'aabbb'
But I'd
On Sun, Oct 26, 2008 at 9:54 PM, sonich [EMAIL PROTECTED] wrote:
I need simple web crawler,
I found Ruya, but it's seems not currently maintained.
Does anybody know good web crawler on python or with python interface?
What about BeautifulSoup?
http://www.crummy.com/software/BeautifulSoup/
--
Hi,
in an application I have to use some variables with fixed valuse.
For example, I'm working with musical notes, so I have a global
dictionary like this:
natural_notes = {'C': 0, 'D': 2, 'E': 4 }
This actually works fine. I was just thinking if it wasn't better to
use class variables.
Hi,
I need a structure to represent a set of integers. I also need to
perform on this set some basic set operations, such as adding or
removing elements, joining with other sets and checking for the
presence of specific elements.
I think that using Python sets would be the best choice, but I also
On Wed, Oct 22, 2008 at 3:37 PM, Peter Otten [EMAIL PROTECTED] wrote:
Tim Chase wrote:
Though for each test, in 2.3, 2.4, and 2.5 that I've got
installed on my local machine, they each printed s in-order,
and the iteration occurred in-order as well, even without the
added sorted(list(s))
On Wed, Oct 22, 2008 at 4:30 PM, Roy Smith [EMAIL PROTECTED] wrote:
In article [EMAIL PROTECTED],
Mr.SpOOn [EMAIL PROTECTED] wrote:
It seems to me that it orders elements when you add using the add()
method, but if you create a set starting from a list, it may result
unordered.
Thanks for the suggestion. I think I'm gonna try the multimethods way,
that I didn't know about it.
--
http://mail.python.org/mailman/listinfo/python-list
On Thu, Oct 16, 2008 at 10:54 PM, Lie Ryan [EMAIL PROTECTED] wrote:
On Wed, 15 Oct 2008 14:34:14 +0200, Mr.SpOOn wrote:
Something that is more pythonic is something that doesn't use
multimethods. It's just an elaborated way to do type checking. In python,
you usually avoid type checking and
Hi,
in a project I'm overloading a lot of comparison and arithmetic
operators to make them working with more complex classes that I
defined.
Sometimes I need a different behavior of the operator depending on the
argument. For example, if I compare a object with an int, I get a
result, but if I
Hi,
I have this piece of code:
class Note():
...
...
def has_the_same_name(self, note):
return self == note
def __str__(self):
return self.note_name + accidentals[self.accidentals]
__repr__ = __str__
if __name__ == '__main__':
n = Note('B')
On Tue, Sep 30, 2008 at 12:55 PM, Ken Seehart [EMAIL PROTECTED] wrote:
Instance comparison is not necessarily the same as string comparison.
Neither __str__ nor __repr__ are implicitly used at all for comparison.
Ok, I see.
In fact, by default a pair of instances are not equal unless they
46 matches
Mail list logo
