Steve Holden wrote:
> [EMAIL PROTECTED] wrote:
> > Hi,
> >
> > I'm building a multithreaded application and I encountered a tiny and
> > annoying problem. I use a select to wait for data to be read from a
> > socket, after some reads, the select simply block
Grant Edwards escreveu:
> On 2006-06-08, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
>
> > Well, actually I´m using a very simple protocol wich sends only
> > strings ended by newline. I need to send 3 chunks of information and a
> > newline after them. On the
Méta-MCI wrote:
> Hi!
>
> Look at: http://cjkpython.berlios.de (iconvcodec)
>
> (Serge Orlov has built a version for Python 2.4 "special for me"; thanks to
> him).
>
Thanks for the pointer.
iconvcodec should do the job, but I still want a native implementation
to be included with any python.
--
Martin v. Löwis wrote:
> Erik Max Francis wrote:
> >> The only reason is that nobody has needed one so far, and because
> >> it is quite some work to do if done correctly. Why do you need it?
> >
Somebody asked me about generating UTF-32 (he didn't have choice of the
output format).
I was about to
Grant Edwards escreveu:
> On 2006-06-08, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
>
> >>> Well, actually I´m using a very simple protocol wich sends
> >>> only strings ended by newline. I need to send 3 chunks of
> >>> information and a newli
see the calendar faq http://www.faqs.org/faqs/calendars/faq/part3/,
look especially in section 6.7.
Tim Chase wrote:
> I've been trying to come up with a good algorithm for determining
> the starting and ending dates given the week number (as defined
> by the strftime("%W") function).
>
> My prefe
JD wrote:
> Hello,
>
> I try to remove a dictionary key-pair (remove an entry),
> but I'm unsuccessful. Does anyone know how to achieve this?
>
> Thanks
Assuming you know the key:
d = {"foo":1,"bar":2}
print d
del(d["foo"])
print d
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JD wrote:
> Hello,
>
> I try to remove a dictionary key-pair (remove an entry),
> but I'm unsuccessful. Does anyone know how to achieve this?
>
> Thanks
d = dict(a=1, b=2, c=3)
print d
del d['a']
print d
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Hi folks,
I'm trying to use the nmap runtime interaction feature while using it
with the subprocess module. For those not familiar with nmap, the
runtime interaction feature allow users to get informations about the
scan stats during the nmap execution. More at:
http://www.insecure.org/nmap/man/ma
> Where can I find a good explanation when does an interpreter copy the
> value, and when does it create the reference.
Any good Python book. I have Learning Python and Programming Python 2nd
edition and they are very good IMO.
> I thought I understand
> it, but I have just typed in following comm
[EMAIL PROTECTED] wrote:
> All,
>
Hello and welcome to Python.
> Apologies in advance: I'm new to Python and OO, and I'm sure this is a
> really simple question, but I just can't seem to crack it on my own, or
> through looking at examples. I'm
> Please verify before asserting:
>
> >>> a = [[1, 2], [3, 4]]
> >>> b = a[1]
> >>> b is a[1]
> True
> >>> id(b)
> 46912496915448
> >>> id(a[1])
> 46912496915448
Right, I must have had slicing on the brain.
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Well...
I found pexpect as you said, but I also found that it doesn't work on
windows. I need a cross-platform solution, as the program is going to
run on several operating systems. Any other sugestion?
Cheers!
Diez B. Roggisch wrote:
> [EMAIL PROTECTED] schrieb:
> > Hi folk
Disclaimer - I recognize this is not a practical exercise. There are
many implementations around that would do the job better, more
efficiently (Meaning in C) or whatever.
I caught some thread about sorting and started thinking about shell
sort and as part of my trying to pythonise my mind an
Fredrik Lundh wrote:
> [EMAIL PROTECTED] wrote:
>
> > An aside - can anyone tell me where the use += and -= is documented?
>
> http://docs.python.org/ref/augassign.html
> http://pyref.infogami.com/assignments
>
>
Thanks!!!
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Hello!
> How can I determine if an attribute can be found in the usual places?
print "item1" in dir(root) # False
print "item3" in dir(root) # True
Is it the behavior you wanted?
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And yes, it is more to type ;)
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I had good results with os.symlink on Solaris, see
http://docs.python.org/lib/os-file-dir.html
Dan M wrote:
> I'm a little bit confused. According to the sources I've looked at on the
> net,
> os.link('file1', 'file2')
> should make a hard link from file1 to file2. But what I'm finding is that
Thanks for the critique.
John Machin wrote:
> On 10/06/2006 7:00 AM, [EMAIL PROTECTED] wrote:
> > Disclaimer - I recognize this is not a practical exercise. There are
> > many implementations around that would do the job better, more
> > efficiently (Meaning in C) or whate
I'm not sure if you ever got a good answer. I for one am too lazy to
look up the pages I found... but - check out
http://aspn.activestate.com/ASPN/search?query=combinations§ion=PYTHONCKBK&type=Subsection
Tons of nice recipes... Personally I liked the one that dynamically
generated a nested functi
I'm not sure how it's a comparison to class variables. So I wouldn't
worry about that. I think there are some advantages to having the
parent as an instance member. Intuitively, the name lookup on
self.parent.foo would be faster than if you passed in the object in
question - although I haven't t
Hello,
It is a pleasure to announce in this mailing list the newly released
Dao. This is the first release after the Dao interpreter being
re-designed and re-implemented as a virtual register machine since the
beginning of this year. There have been many great improvements on both
the language and
Girish Sahani wrote:
> Hi,
> I am trying to modify a list of pairs (l4) by removing those
> pairs which are not present in a third list called pairList.
> The following is a simplified part of the routine i have written. However
> it does not give the correct output. Please help!
> Its possible
Hi everyone.
I've just been trying to add a bit more granularity to my logging code,
as the jump from INFO (level 20) to DEBUG (level 10) is a bit too big.
I was thinking of borrowing a few levels from java: fine (18), finer
(16) and finest(14).
This is what I've tried:
log = logging.getLogger(a
bruno at modulix wrote:
> [EMAIL PROTECTED] wrote:
> (meta : please don't top-post)
> > Intuitively, the name lookup on
> > self.parent.foo would be faster than if you passed in the object in
> > question
>
>
> Each dot means doing a lookup in a namespace.
Ken Tilton wrote:
> The royal We has just learned that His Kennyness will be honoring the
> boozehounds of LispNYC with His Presence tonight (deets below).
>
> He will come bearing Celtk and news of PyCells, though the top billing
> tonight goes to SoC student Extraordinaire Samantha Kleinberg.
>
if you want to interrupt the code to find out where it is,
you can instead connect to it in gdb and get the python traceback of
each thread.
if you're interested I'll post the necesary gdb-macro for that (didn't
put it on the net yet)
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Nick Maclaren wrote:
> ...
> Now, I should like to improve this, but there are two problems. The
> first is political, and is whether it would be acceptable in Python to
> restore the semantics that were standard up until about 1980 in the
> numerical programming area. I.e. one where anything tha
luca72 wrote:
> Hello
> I have to make an easy operation but reading the pycrypto doc. a never
> see AES example
> I have to cript this key 'ea523a664dabaa4476d31226a1e3bab0' with the
> AES.
> Can you help me for make it with pycrypto
>
> Regards Luca
You can do this as follows:
py> from Crypto.C
Laszlo Nagy wrote:
> > You can do this as follows:
> >
> > py> from Crypto.Cipher import AES
> > py> # key has to be 16, 24 or 32 bytes for AES
> > py> crypt = AES.new('abcdefghijklmnop', AES.MODE_ECB)
> > # we're lucky, the string to encrypt is a multiple of 16 in length
> > py> txt = 'ea523a664d
Here is a code fragment, where I am trying to copy a file, avoiding
overwrites and race conditions. The filename gets a '02','03','04' etc
appended to the end if a file with that name already exists.
I know the writing of the single space is overkill, but I am surprised
I cannot find an example o
a wrote:
> thanks for reading
Their bread is awful.
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I would think everytime you add an item to a list you must increase
reference count of that
item.
http://docs.python.org/api/refcountDetails.html has an example that
seems to contradict that
int
set_all(PyObject *target, PyObject *item)
{
int i, n;
n = PyObject_Length(target);
if
nate wrote:
> Hey everyone,
>
> I am trying to figure out what is the largest integer I can. Lets say
> for 400 megabytes of memory at my disposal.
>
> I have tried a few things
> c = 2**100
> d = 2**200
> print c**d
>
> Obviously I didn't have enough memory for that, but I was able to c**3
pygame.org is what you need
it has tutorials
it's cool
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Padraig wrote:
> Hi all,
>
> Just a quick question... when I try to install Python on Windows Vista
> Beta 2 the installer seems to hang after I select the destination
> folder, saying that it will "return when it has finished calculating
> disk space requirements". I just can't seem to get past t
Larry Bates wrote:
> I guess my approach would be different. To eliminate any race
> conditions, I would keep a small text file that always contained
> the next filename that is to be written. Something like:
>
> nextfiletowrite=/path/filename006.dat
>
> I would try to get a lock on this file, r
Suppose I have this module `mymodule.py' -
# mymodule.py - begin
def test():
print "original"
# mymodule.py - end
Now assume that I do this in some arbitrary module ->
def override():
print "test is overridden"
import mymodule
mymodule.test = override
Two questions -
1) If mymodule is
[EMAIL PROTECTED] wrote:
> Suppose I have this module `mymodule.py' -
>
> # mymodule.py - begin
> def test():
> print "original"
> # mymodule.py - end
>
> Now assume that I do this in some arbitrary module ->
>
> def override():
>
K P S wrote:
> Thanks everyone.
> routines to list all the files in a zip archive, but I don't see any to
> list only the first, or only the second, etc. It doesn't look like
If you can list all the files, then you can list only the first. :-)
Don't worry about python internal allocation proced
I'm not seeing much benefit from psyco (only 5-10% faster). Maybe this
example is too trivial? Can someone give me some pointers as to what
kind of code would see a dramatic benefit?
Here's the code:
import time
import psyco
n = 10
t1 = time.clock()
l = list(range(0,n))
l2 = [x**2 for x in
> Place all the code in a function. Even without psyco you might get
> somewhat better performances then. And I doubt psyco can optimise code
> that isn't in a function anyway.
>
> And lastly, most of the code is probably spend computing x**2 which is
> already optimised C code.
I've changed the c
dialog binary is 110 KB. Won't it fit ?
Eric S. Johansson wrote:
> I'm creating a dialogue style interface for an application on a
> dedicated system. All I have is basic Python 2.3. Is there anything
> like an all Python dialog equivalent floating around? I'm currently
> hacking away in curse
> > > Place all the code in a function. Even without psyco you might get
> > > somewhat better performances then. And I doubt psyco can optimise code
> > > that isn't in a function anyway.
Another thing I wasn't considering is that the first call with psyco
enabled might be slower. The 2nd time th
[EMAIL PROTECTED] wrote:
> Hi all,
> Is there a simple python function to return the list index of the
> minimum entry in a list of lists?
> ie, for [[3,3,3,3], [3,3,3,1], [3,3,3,3]] to return 2,4.
> Or, same question but just for a list of numbers, not a list of lists.
>
Thanks so much for your help. I was wondering if there was anything
even simpler, but this will be great.
[EMAIL PROTECTED] wrote:
> [EMAIL PROTECTED] wrote:
> > Hi all,
> > Is there a simple python function to return the list index of the
> > minimum entry in a list
[EMAIL PROTECTED] wrote:
> Hi all,
> Is there a simple python function to return the list index of the
> minimum entry in a list of lists?
> ie, for [[3,3,3,3], [3,3,3,1], [3,3,3,3]] to return 2,4.
> Or, same question but just for a list of numbers, not a list of lists.
&
Hello,
I thought that I should ask here for comments on a blog entry that I
wrote some weeks ago. I am sure that other people have been thinking
about this, but I didn't yet find them.
The Python standard library unfortunately doesn't provide a module that
gives unique names to common keyboard ev
[EMAIL PROTECTED] wrote:
> I am a newbie in python. I want to learn and implement a small
> networking concept. Please help me. Every help is appreciated.
(hums the Batman Theme song replacing the words Batman with Google)...
http://www.amk.ca/python/howto/sockets/
http://www.devshed.c
for x in range(self.MAX_CRAWL_THREADS+1):
self.con.append(
[MySQLdb.connect(host,username,passwor,database,PORT),0])
PORT is an extra argument you might not have perhaps
rodmc wrote:
> I have written an application that connects to a database on a remote
> machine which uses MySQLdb 1.
Is there any good methods to read a encrypted password file?
hi, all:
I've a zipped file with a password .
currently i use it by this method:
$ unzip -p secret.zip | python my-pexpect.py
but i want to remove the unzip -p secret.zip process.
that is :
$ python my-pexpect.py [whe py
Daniel Schüle wrote:
> Hello,
>
> currently I am using this instance method
>
> def getFilecontent(self, filename):
> try:
> return file(filename).read()
> except IOError, err_msg:
> print err_msg
>
I'm writing a GUI application in Jython which takes a database text
file and performs some operations on the data, finally spitting out a
group of CSV files.
I generate a log file and several CSV files and I thought it would be
helpful if I could add a button the user could click on to
automatical
Bruno Desthuilliers wrote:
> [EMAIL PROTECTED] wrote:
> > Does anyone know of a way to embed python scripts into html, much like
> > you would javascript or php?
>
> I think you'd better learn the profound difference between client-side
> and server-side scriptin
Claudio Grondi wrote:
> [EMAIL PROTECTED] wrote:
> > I am doing alot of reading and trying to teach myself how to program.
> > I can not figure out how to make "Write a program that continually
> > reads in numbers from the user and adds them together until the sum
>
[EMAIL PROTECTED] wrote:
> Claudio Grondi wrote:
> > [EMAIL PROTECTED] wrote:
> > > I am doing alot of reading and trying to teach myself how to program.
> > > I can not figure out how to make "Write a program that continually
> > > reads in numbers from
Rune Strand wrote:
> >
> > I am doing alot of reading, and the problem didnt come with an answer.
> > I dont understand how to get it to continually input numbers and add
> > all those together
>
> Use while, raw_input, sys.argv[1] and int() and break the loop when the
> sum is above 100.
>
> ;-)
Rune Strand wrote:
> [EMAIL PROTECTED] wrote:
> > Rune Strand wrote:
> > > >
> > > > I am doing alot of reading, and the problem didnt come with an answer.
> > > > I dont understand how to get it to continually input numbers and add
> > >
Tim Chase wrote:
> > bigone = 100
> >
> > number = input("Whats the first number?")
> > number2 = input ("Whats the second number?")
> > nu3 = number+number2
> > while nu3 < bigone:
> > print ("Not there yet, next number please")
> >
> > print "Finally there!"
> >
> > thats what i thought mayb
I find the answer to my own question. The inspect module have what I
need.
Here is the sample code:
a.py
import b
print 'hello world from module a'
b
and is it a good idea???
I am thinking of writing a controlling module - call it a postmaster if
you will - that will start submodules and pass them work via queues -
one input queue per module. The modules will send their results back to
the postmaster via its queue. The postmaster will the
hi guys ,
I' m new to python ...and I would like to ask you , wich is the best
template for developing dinamic generated pages using python ?
I would like to use something easy to install and develop like php tags and with a lots of features .
thanks in advance and sorry for this silly questio
I use generators a lot. E.g.
def gen_words(text)
... parse text ...
yield each word in text
for word in gen_words(text):
print word
I don't like the name gen_xxx() very much. Looking for some inspiration
to name generators. Here are some of my ideas:
enumerate_words
gen_words
gene
i was wondering if anyone could point me to some good reading about the
for and while loops
i am trying to write some programs
"Exercise 1
Write a program that continually reads in numbers from the user and
adds them together until the sum reaches 100. Write another program
that reads 100 numbers
iter- clicks for me, thanks :)
wy
infidel wrote:
> > Any idea? Do you have a naming convention for generators?
>
> Sometimes I use the prefix 'iter', like dictionaries have .items() and
> .iteritems(). sometimes I use 'x', like range() vs. xrange(). You
> could simply use 'i' like some of the
Dear Luis ,
Thanks for your kindly answer , so you say that installing mod_python
and a template like chetaah or dyango I can do like as I do with php
and Apache ?
< ?
print
?>
Thanks ,
regards
Richard
Luis M. González ha escrito:
> [EMAIL PROTECTED] wrote:
&g
Andy Dingley <[EMAIL PROTECTED]> wrote:
> Simon Forman wrote:
>
> > There's more to it, but that's the basic idea.
>
> This much I knew, but _why_ and _when_ would I choose to use list
> comprehension (for good Python style), rather than using a simple
> &
I'm pleased to announce the release of nose 0.9. nose provides an
alternate test discovery and running process for unittest, one that is
intended to mimic the behavior of py.test as much as is reasonably
possible without resorting to too much magic.
nose can be installed via easy_install: easy_ins
Fredrik Lundh wrote:
>
> when in doubt, ask the compiler:
>
> def code(x):
> if x in ("abc", "def", "xyz"):
> doStuff()
> elif x in ("pqr", "tuv", "123"):
> doOtherStuff()
>
> import dis
> dis.dis(code)
>
> prints:
>
> 2 0 LOAD_FAST0 (x)
>
I found the Wiki article on list comprehensions useful for
understanding the general concept.
See it at: http://en.wikipedia.org/wiki/List_comprehension
It talks about how a list comprehension can be thought of as equivalent
to a traditional set-builder notation in math. For example in math
notatio
That is why I don't like the use of @property. Even though the
decorator is a nice short-hand notation, it is more confusing in my
oppinion. So someone is more likely still call the property as a
function when looking at:
class C:
@property
def data(self):
return 42
rather than if
This has been bothering me for a while. Just want to find out if it
just me or perhaps others have thought of this too: Why shouldn't the
keyset of a dictionary be represented as a set instead of a list? I
know that sets were introduced a lot later and lists/dictionaries were
used instead but I thi
I'm getting rather inconsistent behavior with staticmethod.
@staticmethod has the same problems, but I'm demonstrating it with
staticmethod() because it shows things more clearly
---
>>> class A:
def orig():
print "hi"
There's a few good reasons.
1 - golden handcuffs. Breaking old code is bad 90% of the time
2 - creating a set MAY be slower.
Python's sets seem to imply to that they will always be a hash map. in
this case, some creative hash map "mapping" could allow one to create a
set without calculating hash
I would sugest looking at http://pexpect.sourceforge.net/ The Expect
metalanguage was specifically designed for the kind of things you are
trying to do. I used it recently on a project to configure 25
instances of an application, remotly, half over ssh half over telnet.
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sses.
Anyone have a URL?
Scott David Daniels wrote:
> [EMAIL PROTECTED] wrote:
> > I'm getting rather inconsistent behavior with staticmethod.
> Not really.
>
> >>>> class A:
> > def orig():
> > print "hi"
> > s
THANK YOU!
Now I can actually worry about the advantages/disadvantages!
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If anyone has a way to contact thesamet, please tell him to check his
private messages at the Python Challenge website; I have a couple of
ideas for more challenges.
Cheers all.
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I used this _EXACT_ solution(copied below) at work a month ago, to
start 20ish programs, each with different settings. In this case I HAD
to use telnet for some of them, because they were on an embedded
machine, 4 of them used SSH(across the internet), and the rest were
local programs. It worked
agreed, SSH is advisable over telnet in nearly all situations.
However, there are a few times where telnet is better.
1. Embeded machines often have stripped down OS's. Telnet is much
smaller and cheaper than a full blown SSH install. When every byte
counts, you wont find SSH
2. He may have a pre
Code -
# assumes hosts is a list of hostnames
for host in hosts:
child = pexpect.spawn("ssh [EMAIL PROTECTED]" % host)
child.expect ('Password:')
child.sendline ("the correct root password")
child.expect ('#') # root prompt
Yes, this is what he's saying. Its not "broken," just a bit different.
After all, you dont have a problem with:
lst = [1, 2, 3]
ptr = lst
lst.append(4) # this changes ptr
And a "view" of the dictionary is orders faster than creating a copy of
it (which is required to keep k0 from changing in you
ur code up.
Bruno Desthuilliers wrote:
> . wrote:
> > What is the fast way for a fast implementation of Python?
>
> Please define "fast".
>
> --
> bruno desthuilliers
> python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.
Wow, so many people with the same solution... where's the creativity
folks?
Whenever sys.exit() doesn't work for me, I find that a good solid thump
on the side of the computer case with a large mallet tends to do the
job. And there's always threatening the computer with a degaussing gun!
--
htt
Ooh, can you point me to them? This sounds very interesting.
The only way I can think of doing it is to have some fun with pointers
and not make the final copy until a change is made to the table. I'd
love to read about an algoritm which can get around this! I feel so
behind in the times, I st
I may be wrong, but I've never heard of Windows being fully posix
compliant. I guarentee you that they dont support pthreads.
It is possible that by "posix compliant" the marketting execs mean
"supports all posix commands which dont interfere with our way of doing
things"
Windows version of pyth
Q: I have been looking through Volume 1 & 2 on the topics of TCP
timeouts. I have been looking in the section on "Timeout And
Retransmission" where you talk about round trip times. My question to
you would be what would make a tcp connection timeout? Is there a
certain number of retries that need t
Hi, all
I am learning how to import c code in python.
Here is my simple code foo.c:
=
#include
void bar()
{
printf("Hello! C wrap!");
}
static PyObject *foo_bar(PyObject *self, PyObject *args) {
/* Do something interesting here. */
bar();
Py_RETURN_NONE;
}
static PyMethod
indicate this,
and linux's library loading code will ignore it when loading libraries
for 64-bit programs.
I think there' might be a trick that lets you compile ELF files with
both 64-bit and 32-bit code, but actually doing so is outside of my
expertise.
[EMAIL PROTECTED] wrote:
> H
My experiance is mostly with old-style classes, but here goes.
first off, the question is actually easier than you think.
After all, self is an instance of a string, so self[3:4] would grab
the slice of characters between 3 and 4 =)
as for __init__, what I have found is that if you do not incl
() created
an independant list, python would first need to create a list, then
create a set.
Paul Rubin wrote:
> "Delaney, Timothy (Tim)" <[EMAIL PROTECTED]> writes:
> > If you want an independent data set, you have to take a snapshot. For
> > the above, that's d
Peter Otten wrote:
> Kirk McDonald wrote:
>
> > Let's say I have a function that takes a callback function as a
> > parameter, and uses it to describe an iteration:
> >
> > def func(callback):
> > for i in [1, 2, 3, 4, 5]:
> > callback(i)
> >
Which object is immutable? the callback
I can get to my code on wednesday, I'll upload it somewhere you can get
a copy of it. But do look into using SSH, because in the long run it
is a far better tool. A properly configured SSHD also opens the way to
scp. Without scp, copying files means ftp, or unsecured rsync.
Do you want tabbed w
I woulkdn't interate at the same time. zip takes two lists, and makes
a single list of tuples, not the other way around. The easilest
solution is
feed_list = [ix.url for ix in feeds_list_select]
feed_id = [ix.id for ix in feeds_list_select]
Also, a big feature of list comprehension is it filters
I hope I am not being too ignorant :p but here goes... my boss has
written a bit of python code and asked me to speed it up for him...
I've reduced the run time from around 20 minutes to 13 (not bad I think
;) to speed it up further I asked him to replace a loop like this:-
index = 0
for element
Rune Strand wrote:
> itertools.izip is usually faster than zip. You can try that.
Thanks very much
timing for itertools.izip
for av, bv, cv, dv in itertools.izip(a, b, c, d):
avbv = (av-bv) * (av - bv)
diff = cv - dv
e.append(diff - avbv)
on a 4 million element aray:
slice:
8.06299
Steven D'Aprano wrote:
> On Tue, 04 Jul 2006 07:18:29 -0700, [EMAIL PROTECTED] wrote:
>
> > I hope I am not being too ignorant :p but here goes... my boss has
> > written a bit of python code and asked me to speed it up for him...
> > I've reduced the run time fro
Fredrik Lundh wrote:
> [EMAIL PROTECTED] wrote:
>
> > ## just for a laugh my own zip function
> > ## the joke is it runs faster than built in zip ??
>
> since it doesn't do the same thing, it's not a very good joke.
>
> > def myzip(*args):
&
aliassaf wrote:
> Hello,
>
> If we write = x^2 and if I give to the program the values of x, it will
> going to calculate the values of y, and also for x.
>
> But it is possible ? that is if I give to the program the values of X and Y,
> it will indicate to me the relation between the two variabl
PyList_Append requires explicit Py_INCREF after?
(I didn't see in docs where it said if appends a new reference
or a borrowed reference like other APIs.)
thanks!
Chris
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