Classes and functions.

Hello folks , i am using the newick module http://www.daimi.au.dk/~mailund/newick.html.I am just learning to use it and i have a question about it. from newick.tree import parse_tree from newick.tree import add_parent_links from newick.tree import add_distance_from_root import sys t = parse_t

Re: Large Data Sets: Use base variables or classes? And some binding questions

On 26 Sep, 16:39, Patrick Sullivan <[EMAIL PROTECTED]> wrote: > Hello. > > I will be using some large data sets ("points" from 2 to 12 variables) > and would like to use one class for each point rather than a list or > dictionary. I imagine this is terribly inefficient, but how much? I can't real

Re: Quick sort implementation in python

On 26 Sep, 08:43, Terry Reedy <[EMAIL PROTECTED]> wrote: > That depends on the data structure.  Access to a singly-linked list is > by linear scanning from the front. Which is one reason why mergesort i preferred over quicksort for lists. Pythons built-in sort is a variant of mergesort and should

Re: Matplotlib Polar Plot Angles/Axes

In my rush I seem to have overlooked that, maybe because it's Friday afternoon. Converting the degrees to radians fixed it: rad_angles = [elem*(pi/180) for elem in angles] Thanks, -- http://mail.python.org/mailman/listinfo/python-list

Re: Are spams on comp.lang.python a major nuisance?

Hm, I guess you just filter mailing lists and can do nothing about the newsgroup if I'm fetching via the nntp server of my ISP itself, right? I'm using Thunderbird as news reader and this is probably not the smartest news reader, though I like it a lot for mails. Is there any pythonable (o

Re: Test if list contains another list

I suggest Python programmers to fill the holes in the Python std lib with some debugged & tuned implementations, their "bag of tricks", so they don't have to re-invent and debug things all the time. This works well with Psyco: def issubseq(sub, items): """issubseq(sub, items): return true if

Re: ConfigParser subclass problem

On Sep 26, 12:56 pm, Strato <[EMAIL PROTECTED]> wrote: > Hi folks, > > I think I do something wrong, but I don't see why it doesn't work, so I > will explain: > > I've searched in the list archive and found this thread, that explain > exactly what I want to have: the options strings returned by > C

Re: Are spams on comp.lang.python a major nuisance?

nntpman68 wrote: I guess you just filter mailing lists and can do nothing about the newsgroup if I'm fetching via the nntp server of my ISP itself, right? I am reading via gmane.comp.python.general, so I will benefit from filtering spam posted to c.l.p. Anyone with a news reader can do the

Re: Test if list contains another list

bearophile: > # searching > m, i = 0, 0 ... > i += 1 The name 'i' can be removed, sorry. Bye, bearophile -- http://mail.python.org/mailman/listinfo/python-list

Re: Large Data Sets: Use base variables or classes? And some binding questions

Patrick Sullivan wrote: Hello. I will be using some large data sets ("points" from 2 to 12 variables) and would like to use one class for each point rather than a list or dictionary. I imagine this is terribly inefficient, but how much? I strongly suspect that you should use one class and a cl

Re: Classes and functions.

aditya shukla wrote: Hello folks , i am using the newick module http://www.daimi.au.dk/~mailund/newick.html.I am just learning to use it and i have a question about it. from newick.tree import parse_tree from newick.tree import add_parent_links from newick.tree import add_distance_from_root

Re: Quick sort implementation in python

>> Can you please explain how you did that in C? IOW, how did you do >> the partition function (template) in case you don't have random >> access to the collection? >> > > Why exactly do you need random access for partition function? This is a counter-question, not an answer. Let me ask again: Ho

Re: how to search multiple textfiles ? (Python is slow ?)

Mike Driscoll wrote: On Sep 26, 8:35 am, Stef Mientki <[EMAIL PROTECTED]> wrote: hello, I want to search multiple textfiles (python source files) for a specific word. I can find all files, open them and do a search, but I guess that will be rather slow. I couldn't find any relevant informat

Re: Matplotlib Polar Plot Angles/Axes

On Sep 26, 10:33 pm, afrogazer <[EMAIL PROTECTED]> wrote: > rad_angles = [elem*(pi/180) for elem in angles] You are missing some more on a friday afternoon: angles is created by arange, so it is a numpy array. In that case you simply can do rad_angles = pi/180 * angles No need to use list-comprehen

Re: Matplotlib Polar Plot Angles/Axes

On Sep 26, 3:33 pm, afrogazer <[EMAIL PROTECTED]> wrote: > In my rush I seem to have overlooked that, maybe because it's Friday > afternoon. Converting the degrees to radians fixed it: > > rad_angles = [elem*(pi/180) for elem in angles] > > Thanks, One other caveat, some of the bars may over-lap.

Re: Matplotlib Polar Plot Angles/Axes

On Sep 26, 4:42 pm, Bas <[EMAIL PROTECTED]> wrote: > On Sep 26, 10:33 pm, afrogazer <[EMAIL PROTECTED]> wrote:> rad_angles = > [elem*(pi/180) for elem in angles] > > You are missing some more on a friday afternoon: angles is created by > arange, so it is a numpy array. In that case you simply can

Re: Large Data Sets: Use base variables or classes? And some binding questions

On Sep 26, 11:39 am, Patrick Sullivan <[EMAIL PROTECTED]> wrote: > Hello. Hi, I have a couple suggestions. > I will be using some large data sets ("points" from 2 to 12 variables) > and would like to use one class for each point rather than a list or > dictionary. Ok, point of terminology. It

Re: is decorator the right thing to use?

Dmitry S. Makovey a écrit : Paul McGuire wrote: see, in your code you're assuming that there's only 1 property ( 'b' ) inside of A that needs proxying. In reality I have several. No, really, Diez has posted the canonical Proxy form in Python, using __getattr__ on the proxy, and then redirect

Re: how to replace and string in a "SELECT ... IN ()"

so you wouldn't object then to something like ' in (%)' % ','.join([str_edit_for_exploit(x) for x in aList]) if str_edit_for_exploit applied security edits? On Fri, Sep 26, 2008 at 2:28 PM, Benjamin Kaplan <[EMAIL PROTECTED]>wrote: > > > On Fri, Sep 26, 2008 at 3:04 PM, Michael Mabin

Re: how to replace and string in a "SELECT ... IN ()"

oops. i meant. ' in (%s)' % ','.join([str_edit_for_exploit(x) for x in aList]) On Fri, Sep 26, 2008 at 5:05 PM, Michael Mabin <[EMAIL PROTECTED]> wrote: > so you wouldn't object then to something like ' in (%)' % > ','.join([str_edit_for_exploit(x) for x in aList]) > > if

Re: Time.sleep(0.0125) not available within Linux

In message <[EMAIL PROTECTED]>, Grant Edwards wrote: > Never assume somebody reading the article and attempting to > help you can see the subject line. Why not? -- http://mail.python.org/mailman/listinfo/python-list

Re: Not fully OO ?

Steven D'Aprano a écrit : On Fri, 26 Sep 2008 09:58:39 +0200, Bruno Desthuilliers wrote: "Procedural" is the opposite of "functional", not "object-oriented". AFAIK, the "opposite" if functional is imperative, not procedural. But let's not waste too much time on terminology arguments... We're

Re: Not fully OO ?

Steven D'Aprano a écrit : On Fri, 26 Sep 2008 17:00:59 +0200, Bruno Desthuilliers wrote: Patrick Mullen a écrit : Depending on the scale of the website I am making, how much I care about editing it in the future, and how much I just want to get something up, I will occasionally use php. And

Re: Not fully OO ?

Tim Rowe a écrit : 2008/9/26 Tino Wildenhain <[EMAIL PROTECTED]>: The question I usually ask is "Does this language help me get the job done?" Python often does. That's all that really matters, isn't it? Well then it still depends on the perception of "job done". For example PHP programmers w

Re: is decorator the right thing to use?

Bruno Desthuilliers wrote: > Hem... I'm afraid you don't really take Python's dynamic nature into > account here. Do you know that even the __class__ attribute of an > instance can be rebound at runtime ? What about 'once and for all' then ? must've been wrong wording on my part. Dynamic nature is

Re: is decorator the right thing to use?

On Sep 26, 3:03 pm, Bruno Desthuilliers <[EMAIL PROTECTED]> wrote: > Dmitry S. Makovey a écrit : > > > > > Paul McGuire wrote: > >>> see, in your code you're assuming that there's only 1 property ( 'b' ) > >>> inside of A that needs proxying. In reality I have several. > > > >> No, really, Diez ha

Re: Not fully OO ?

On Sep 26, 11:48 am, "Tim Rowe" <[EMAIL PROTECTED]> wrote: > 2008/9/26 Tino Wildenhain <[EMAIL PROTECTED]>: > > >> The question I usually ask is "Does this language help me get the job > >> done?" Python often does. That's all that really matters, isn't it? > > > Well then it still depends on the p

Running IDLE on 3.0rc1

I have not seen this posted, so... To run IDLE with Python3.0rc1, edit Python30/Libs/idlelib/run.py, and change "set_daemon(True)" to "daemon = True" and save. (This is about line 75, and the only appearance of 'daemon'.) Otherwise, you get error message about not starting a subprocess. tjr -- h

Re: Are spams on comp.lang.python a major nuisance?

On Sep 26, 6:31 am, [EMAIL PROTECTED] wrote: > I took over spam filter management for the python.org mailing lists a couple > months ago and made a few changes to the way the spam filter is trained. > Things seem to be at a reasonable level as far as I can tell (I see a few > spams leak through eac

Re: Not fully OO ?

2008/9/26 Bruno Desthuilliers <[EMAIL PROTECTED]>: > Not to start a troll, but from what I've seen of C# so far I do find this a > bit surprising and really suspect more of a library issue than a language > one. Care to tell more about the problem and solution ? > > (NB : I wouldn't even asked if

Re: Are spams on comp.lang.python a major nuisance?

Aaron> Is there such a thing as an open-source spam filter? That way Aaron> any time anyone had spare time and got annoyed, they could dump a Aaron> short snippet of code into the grinder. Yes: though I think your model of how it works probably needs a bit

Re: is decorator the right thing to use?

Aaron "Castironpi" Brady wrote: > That prohibits using a descriptor in the proxied classes, or at least > the proxied functions, since you break descriptor protocol and only > call __get__ once. Better to cache and get by name. It's only slower > by the normal amount, and technically saves space,

Re: Large Data Sets: Use base variables or classes? And some binding questions

On Fri, 26 Sep 2008 14:54:36 -0700, Carl Banks wrote: > However, it seems from the rest of your comments that speed is your main > concern. Last time someone reported __slots__ didn't make a big > difference in access time, but it probably would speed up creating > objects a bit. Carl probably

Re: Not fully OO ?

2008/9/26 Aaron Castironpi Brady <[EMAIL PROTECTED]>: > If you have wxFormBuilder and the win32 library, it's pretty fast. Speed has never been an issue for me with Python. For my masters degree I did a project that involved a lot of number crunching, and in my proposal I wrote that I'd use Pytho

Re: Not fully OO ?

On Sep 26, 6:40 pm, "Tim Rowe" <[EMAIL PROTECTED]> wrote: > 2008/9/26 Aaron Castironpi Brady <[EMAIL PROTECTED]>: > > > If you have wxFormBuilder and the win32 library, it's pretty fast. > > Speed has never been an issue for me with Python. For my masters > degree I did a project that involved a lo

PyCon 2009 Call for Proposals

Call for proposals -- PyCon 2009 -- === Want to share your experience and expertise? PyCon 2009 is looking for proposals to fill the formal presentation tracks. The PyCon conference days will be March 27-29, 20

Re: Large Data Sets: Use base variables or classes? And some binding questions

On Sep 26, 7:43 pm, Steven D'Aprano <[EMAIL PROTECTED] cybersource.com.au> wrote: > On Fri, 26 Sep 2008 14:54:36 -0700, Carl Banks wrote: > > However, it seems from the rest of your comments that speed is your main > > concern.  Last time someone reported __slots__ didn't make a big > > difference

Re: Large Data Sets: Use base variables or classes? And some binding questions

On Sep 26, 8:53 pm, Carl Banks <[EMAIL PROTECTED]> wrote: > It might still end up being slower (creating slot descriptors might > take more time for all I know) but it's more than just an effect of > less memory. Actually scratch that. Descriptors are only created when the type object is created.

Re: lxml question

On Sep 27, 1:19 am, Uwe Schmitt <[EMAIL PROTECTED]> wrote: > I have to parse some text which pretends to be XML. lxml does not want > to parse it, because it lacks a root element. Another option is BeautifulSoup, which handles badly formed XML really well: http://www.crummy.com/software/Beautiful

Re: Not fully OO ?

2008/9/27 Aaron Castironpi Brady <[EMAIL PROTECTED]>: > But I, and I imagine I'm not the only one, would love to know the > example that C# developed faster than Python. I suppose the fact that > the line of wx specification that has two identifiers where C# has one > is more of a drain on progra

Re: Are spams on comp.lang.python a major nuisance?

On 2008-09-26, nntpman68 <[EMAIL PROTECTED]> wrote: > Hm, > > > I guess you just filter mailing lists and can do nothing about the > newsgroup if I'm fetching via the nntp server of my ISP itself, right? I read the group via NNTP, and I find that blocking all articles posted from google.groups ge

Re: Time.sleep(0.0125) not available within Linux

On 2008-09-26, Lawrence D'Oliveiro <[EMAIL PROTECTED]> wrote: > In message <[EMAIL PROTECTED]>, Grant Edwards > wrote: > >> Never assume somebody reading the article and attempting to >> help you can see the subject line. > > Why not? Because it might not be. It depends on the user's newsreader a

Re: is decorator the right thing to use?

On Sep 26, 6:38 pm, "Dmitry S. Makovey" <[EMAIL PROTECTED]> wrote: > I actually ended up rewriting things (loosely based on George's suggested > code) with descriptors and not using metaclasses or decorators (so much for > my desire to use them). > > With following implementation (unpolished at th

Re: Not fully OO ?

On Sep 26, 8:10 pm, "Tim Rowe" <[EMAIL PROTECTED]> wrote: > 2008/9/27 Aaron Castironpi Brady <[EMAIL PROTECTED]>: > > > But I, and I imagine I'm not the only one, would love to know the > > example that C# developed faster than Python.  I suppose the fact that > > the line of wx specification that

getting global variables from dictionary

global_vars.py has the global variables set_var.py changes one of the values on the global variables (don't close it or terminate) get_var.py retrieves the recently value changed (triggered right after set_var.py above) Problem: get_var.py retrieves the old value, the built-in one but not the rece

Re: Are spams on comp.lang.python a major nuisance?

On Sep 26, 9:30 pm, Grant Edwards <[EMAIL PROTECTED]> wrote: > On 2008-09-26, nntpman68 <[EMAIL PROTECTED]> wrote: > > > Hm, > > > I guess you just filter mailing lists and can do nothing about the > > newsgroup if I'm fetching via the nntp server of my ISP itself, right? > > I read the group via

Re: getting global variables from dictionary

When you do "Variables()" in your code, you're making a new instance of that class that has no relation to any other instances. This is the cause of your problem. To just reference a class, use just "Variables". But that doesn't help in this case because var_dict is an instance variable, not a clas

Re: getting global variables from dictionary

On Sep 26, 9:01 pm, icarus <[EMAIL PROTECTED]> wrote: > global_vars.py has the global variables > set_var.py changes one of the values on the global variables (don't > close it or terminate) > get_var.py retrieves the recently value changed (triggered right after > set_var.py above) > > Problem: ge

Re: Are spams on comp.lang.python a major nuisance?

On Sep 26, 9:09 pm, George Sakkis <[EMAIL PROTECTED]> wrote: > On Sep 26, 9:30 pm, Grant Edwards <[EMAIL PROTECTED]> wrote: > > > On 2008-09-26, nntpman68 <[EMAIL PROTECTED]> wrote: > > > > Hm, > > > > I guess you just filter mailing lists and can do nothing about the > > > newsgroup if I'm fetchin

Re: getting global variables from dictionary

icarus <[EMAIL PROTECTED]> writes: > global_vars.py has the global variables > set_var.py changes one of the values on the global variables (don't > close it or terminate) > get_var.py retrieves the recently value changed (triggered right after > set_var.py above) > > Problem: get_var.py retrieve

Re: getting global variables from dictionary

On Sep 26, 10:01 pm, icarus <[EMAIL PROTECTED]> wrote: > global_vars.py has the global variables > set_var.py changes one of the values on the global variables (don't > close it or terminate) > get_var.py retrieves the recently value changed (triggered right after > set_var.py above) > > Problem: g

Re: Are spams on comp.lang.python a major nuisance?

>> > I read the group via NNTP, and I find that blocking all articles >> > posted from google.groups gets rid of all of the spam. >> >> ... along with a far from trivial (I guess) percentage of non-spam, >> such as this post. Aaron> Every method has false positives, Georg

Re: Are spams on comp.lang.python a major nuisance?

George Sakkis <[EMAIL PROTECTED]> writes: > On Sep 26, 9:30 pm, Grant Edwards <[EMAIL PROTECTED]> wrote: > > I read the group via NNTP, and I find that blocking all articles > > posted from google.groups gets rid of all of the spam. > > ... along with a far from trivial (I guess) percentage of no

what does ` ` do in ' '.join([`x * x` for x in range(1, 6)])?

' '.join([`x * x` for x in range(1, 6)]) exactly what does this symbol do and what does it stand for? -- http://mail.python.org/mailman/listinfo/python-list

Re: Are spams on comp.lang.python a major nuisance?

On 2008-09-27, George Sakkis <[EMAIL PROTECTED]> wrote: > On Sep 26, 9:30 pm, Grant Edwards <[EMAIL PROTECTED]> wrote: > >> On 2008-09-26, nntpman68 <[EMAIL PROTECTED]> wrote: >> >> > Hm, >> >> > I guess you just filter mailing lists and can do nothing about the >> > newsgroup if I'm fetching via t

Build-in 'repr' function (was: what does ` ` do in ' '.join([`x * x` for x in range(1, 6)])?)

process <[EMAIL PROTECTED]> writes: > ' '.join([`x * x` for x in range(1, 6)]) > > exactly what does this symbol do and what does it stand for? It's an obsolete, deprecated syntactic sugar for (what is now implemented as) the built-in 'repr' function. Instead, write the above as: ' '.join(

Re: Python style: exceptions vs. sys.exit()

Bruno Desthuilliers <[EMAIL PROTECTED]> wrote: > Also note that there are quite a couples cases where the library authors > themselves cannot predict which exception types may be raised - as soon > as the library functions expect callback functions, file-like or > dict-like or whatever-like obj

Re: Are spams on comp.lang.python a major nuisance?

On Sep 26, 9:33 pm, Ben Finney <[EMAIL PROTECTED]> wrote: > George Sakkis <[EMAIL PROTECTED]> writes: > > On Sep 26, 9:30 pm, Grant Edwards <[EMAIL PROTECTED]> wrote: > > > I read the group via NNTP, and I find that blocking all articles > > > posted from google.groups gets rid of all of the spam.

Re: what does ` ` do in ' '.join([`x * x` for x in range(1, 6)])?

On Sep 27, 12:39 pm, process <[EMAIL PROTECTED]> wrote: > ' '.join([`x * x` for x in range(1, 6)]) > > exactly what does this symbol do and what does it stand for? `` is the same as repr(). I'm pretty sure the backtick operator has been removed from 3.0. In the context of the code sample you post

Re: Why are "broken iterators" broken?

Craig Allen wrote: In the end I interpreted that statement as if "unless __iter__()" is called again It seems you were confusing iterators and iterables. The iterator is the object that is returned by calling __iter__() on an iterable, and yes, you are expected to get a new one each time you w

Re: multiprocessing eats memory

On Sep 26, 4:52 am, redbaron <[EMAIL PROTECTED]> wrote: > How could I avoid of storing them? I need something to check does it > ready or not and retrieve results if ready. I couldn't see the way to > achieve same result without storing asyncs set. It all depends on what you are trying to do. The

Re: Comparing float and decimal

Mark Dickinson <[EMAIL PROTECTED]> wrote: >On Sep 25, 8:55 am, Tim Roberts <[EMAIL PROTECTED]> wrote: >> Marc 'BlackJack' Rintsch <[EMAIL PROTECTED]> wrote: >> >0.1 actually is >> >> >In [98]: '%.50f' % 0.1 >> >Out[98]: '0.1555111512312578270211815834045410' >> >? >> >> Actually, i

Re: Comparing float and decimal

Mark Dickinson <[EMAIL PROTECTED]> wrote: >On Sep 25, 8:55 am, Tim Roberts <[EMAIL PROTECTED]> wrote: >> Marc 'BlackJack' Rintsch <[EMAIL PROTECTED]> wrote: >> >0.1 actually is >> >> >In [98]: '%.50f' % 0.1 >> >Out[98]: '0.1555111512312578270211815834045410' >> >? >> >>  0.1 i

Re: Time.sleep(0.0125) not available within Linux

In message <[EMAIL PROTECTED]>, Grant Edwards wrote: > On 2008-09-26, Lawrence D'Oliveiro <[EMAIL PROTECTED]> > wrote: >> In message <[EMAIL PROTECTED]>, Grant Edwards >> wrote: >> >>> Never assume somebody reading the article and attempting to >>> help you can see the subject line. >> >> Why not?

Re: What do you call a class not intended to be instantiated

In article <[EMAIL PROTECTED]>, Steven D'Aprano <[EMAIL PROTECTED]> wrote: >On Thu, 25 Sep 2008 21:17:14 -0700, Aahz wrote: >> >> Seems to me that if all the module is used for is to store state, you're >> wasting a file on disk. I personally prefer to use a class singleton. > >I don't recognise

Re: is decorator the right thing to use?

George Sakkis wrote: > You seem to enjoy pulling the rug from under our feet by changing the > requirements all the time :) but that's half the fun! ;) Bit more seriously - I didn't know I had those requirements until now :) I'm kind of exploring where can I get with those ideas. Initial post was

Re: Spring Python 0.7.0 is released

Goldfish <[EMAIL PROTECTED]> wrote: > >Release 0.7.0 was completed last night, and released to >sourceforge.net. > >NOTE: This release included a lot of API scrubbing, in order to bring >things more in tune with PEP-0008 (python's style guide). You're >existing apps PROBABLY were impacted, if you u

Re: what does ` ` do in ' '.join([`x * x` for x in range(1, 6)])?

process wrote: > ' '.join([`x * x` for x in range(1, 6)]) > > exactly what does this symbol do and what does it stand for? Which symbol, the '*' ??? Are you kidding? -- http://mail.python.org/mailman/listinfo/python-list

Re: what does ` ` do in ' '.join([`x * x` for x in range(1, 6)])?

process wrote: > ' '.join([`x * x` for x in range(1, 6)]) > > exactly what does this symbol do and what does it stand for? Ah, just spotted the backticks - they just return whatever's inside them as a string. -- http://mail.python.org/mailman/listinfo/python-list

Re: Eggs, VirtualEnv, and Apt - best practices?

Diez B. Roggisch wrote: >> that is a very valid point, but it seemed that Scott has homogeneous >> environment: Debian/Ubuntu so my post was relative to the original >> request. >> I agree that when you throw Windows/MacOS into the mix things >> become "interesting". But then it's better when your

Re: How to get the filename in the right case ?

Steven D'Aprano wrote: > On Fri, 26 Sep 2008 01:46:15 +0200, Stef Mientki wrote: > >> Secondly thoughtless copying of current behavior, doesn't bring any >> progress, >> and I think that's one of the reasons why we're still burdened by >> inventions done 20 years ago, >> e.g. "do you want to save

Re: What do you call a class not intended to be instantiated

On Fri, 26 Sep 2008 22:15:43 -0700, Aahz wrote: > In article <[EMAIL PROTECTED]>, > Steven D'Aprano <[EMAIL PROTECTED]> wrote: >>On Thu, 25 Sep 2008 21:17:14 -0700, Aahz wrote: >>> >>> Seems to me that if all the module is used for is to store state, >>> you're wasting a file on disk. I personal

<    1   2