SQLObject 0.10.2
Hello! I'm pleased to announce version 0.10.2, a bugfix release of 0.10 branch of SQLObject. What is SQLObject = SQLObject is an object-relational mapper. Your database tables are described as classes, and rows are instances of those classes. SQLObject is meant to be easy to use and quick to get started with. SQLObject supports a number of backends: MySQL, PostgreSQL, SQLite, Firebird, Sybase, MSSQL and MaxDB (also known as SAPDB). Where is SQLObject == Site: http://sqlobject.org Development: http://sqlobject.org/devel/ Mailing list: https://lists.sourceforge.net/mailman/listinfo/sqlobject-discuss Archives: http://news.gmane.org/gmane.comp.python.sqlobject Download: http://cheeseshop.python.org/pypi/SQLObject/0.10.2 News and changes: http://sqlobject.org/News.html What's New == News since 0.10.1 - Small Features ~~ * Use VARCHAR(MAX) and VARBINARY(MAX) for MSSQL = 9.0. * Run post_funcs after RowDestroySignal. Bug Fixes ~ * Fixed a minor bug in Set column. * A bug fixed for RowCreatedSignal together with InheritableSQLObject: run post_funcs after the entire hierarchy has been created. * Aggregate functions now honors 'distinct'. For a more complete list, please see the news: http://sqlobject.org/News.html Oleg. -- Oleg Broytmannhttp://phd.pp.ru/[EMAIL PROTECTED] Programmers don't die, they just GOSUB without RETURN. -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
ANN: NumPy 1.1.0
I'm pleased to announce the release of NumPy 1.1.0. NumPy is the fundamental package needed for scientific computing with Python. It contains: * a powerful N-dimensional array object * sophisticated (broadcasting) functions * basic linear algebra functions * basic Fourier transforms * sophisticated random number capabilities * tools for integrating Fortran code. Besides it's obvious scientific uses, NumPy can also be used as an efficient multi-dimensional container of generic data. Arbitrary data-types can be defined. This allows NumPy to seamlessly and speedily integrate with a wide-variety of databases. This is the first minor release since the 1.0 release in October 2006. There are a few major changes, which introduce some minor API breakage. In addition this release includes tremendous improvements in terms of bug-fixing, testing, and documentation. For information, please see the release notes: http://sourceforge.net/project/shownotes.php?release_id=602575group_id=1369 Thank you to everybody who contributed to this release. Enjoy, -- Jarrod Millman Computational Infrastructure for Research Labs 10 Giannini Hall, UC Berkeley phone: 510.643.4014 http://cirl.berkeley.edu/ -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
SQLObject 0.9.7
Hello! I'm pleased to announce version 0.9.7, a minor bug fix release of SQLObject. What is SQLObject = SQLObject is an object-relational mapper. Your database tables are described as classes, and rows are instances of those classes. SQLObject is meant to be easy to use and quick to get started with. SQLObject supports a number of backends: MySQL, PostgreSQL, SQLite, Firebird, Sybase, MSSQL and MaxDB (also known as SAPDB). Where is SQLObject == Site: http://sqlobject.org Development: http://sqlobject.org/devel/ Mailing list: https://lists.sourceforge.net/mailman/listinfo/sqlobject-discuss Archives: http://news.gmane.org/gmane.comp.python.sqlobject Download: http://cheeseshop.python.org/pypi/SQLObject/0.9.7 News and changes: http://sqlobject.org/News.html What's New == News since 0.9.6 Small Features ~~ * Use VARCHAR(MAX) and VARBINARY(MAX) for MSSQL = 9.0. * Run post_funcs after RowDestroySignal. Bug Fixes ~ * Fixed a minor bug in Set column. * A bug fixed for RowCreatedSignal together with InheritableSQLObject: run post_funcs after the entire hierarchy has been created. * Aggregate functions now honors 'distinct'. For a more complete list, please see the news: http://sqlobject.org/News.html Oleg. -- Oleg Broytmannhttp://phd.pp.ru/[EMAIL PROTECTED] Programmers don't die, they just GOSUB without RETURN. -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
NYC Python User Group Meeting Announcement....
Greetings! The next New York City Python Users Group meeting is planned for June 17th, 6:30pm at Daylife Inc. at 444 Broadway (between Howard St. and Grand St.) on the 5th Floor. We welcome all those in the NYC area who are interested in Python to attend. More information can be found on the users group wiki page: http://www.nycpython.org Hope to see you there! -John Clark -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
Re: Code execution in imported modules
On Thu, May 29, 2008 at 2:43 PM, Eric Wertman [EMAIL PROTECTED] wrote: So I'm working on some file parsing and building up a stack of regular expressions that I need to use. I was thinking of dropping them in an external module. I was wondering.. if I put them in a file called regex.py like so : import re re1 = .. re2 = .. and then do: rgx1 = re.compile(re1) rgx2 = re.compile(re2) and, in my script, parse.py py I do: from regex import * text = bunch of stuff... m = rgx1.search(text) Does the re get compiled when I import it, or every time I call it? Since I'm calling it often, I'd like to compile it once. Thanks! -- http://mail.python.org/mailman/listinfo/python-list Please correct me if I am wrong ... but I believe this should work, and rgx's will only be compiled on the first import. You could also place them in a class and get the same effect when you instantiate the class. class MyRegEx( object ): re1 = .. re2 = .. rgx1 = re.compile(re1) rgx2 = re.compile(re2) -- http://mail.python.org/mailman/listinfo/python-list
Re: Python and Flaming Thunder
On Thu, 29 May 2008 17:57:45 -0400, D'Arcy J.M. Cain wrote: I guess I am still new to this group and don't understand its charter. I wasn't aware that it was a Flaming Blunder group. Can someone please point me to a newsgroup or mailing list dedicated to the Python programming language? By discussing language design of FT compared to other languages you can learn about Python. We all know that Python is brilliant -- here's the opportunity to think about why it is. :-) And it's basically only this very long thread, so it's easy to filter and ignore in a decent news reader. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list
Re: question
On Thu, 29 May 2008 15:41:29 -0700, Gandalf wrote: On May 30, 12:14 am, John Henderson [EMAIL PROTECTED] wrote: Gandalf wrote: how do i write this code in order for python to understand it and print me the x variable x=1 def (): x++ if x 1: print wrong else : print x () Example: x=1 def (x): x += 1 if x 1: return wrong else : return x print (x) John mmm isn't their any global variable for functions? There is but you shouldn't use global variables as they make program and data flow harder to understand, the code more difficult to test, and usually couples functions more tightly then they should. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list
some question with Quixote and Nginx
hi,
i have some question with this,quixote publish width FastCGI.the two
scripts like this(root.ptl and hello.ptl):
class RootDirectory(Directory):
_q_exports = [, hello]
def _q_index [html] (self):
h4Hello,Blog/h4
lia href=hello/hello/a/li
hello = HelloDirectory()
class HelloDirectory(Directory):
_q_exports = [, hi]
def _q_index [html] (self):
h4hello page/h4
lia href=/back home/a/li
def hi [html] (self):
aaa
now, on the firefox input:
http://localhost/hello/ -- this ok
http://localhost/hello -- this will forward http://localhost/hello/hello/
, error.
other:
http://localhost/hello/hi -- this ok
http://localhost/hello/hi/ -- http://localhost/hello/hi//hello/hi/
i think,some problem with Nginx(PATH_INFO is not correct.)
==
nginx.conf:
location / {
fastcgi_pass 127.0.0.1:8000;
fastcgi_param SERVER_NAME nginx;
fastcgi_param PATH_INFO $request_uri;
fastcgi_param SCRIPT_NAME $fastcgi_script_name;
fastcgi_param REQUEST_METHOD $request_method;
fastcgi_param QUERY_STRING $query_string;
fastcgi_param CONTENT_TYPE $content_type;
fastcgi_param CONTENT_LENGTH $content_length;
fastcgi_intercept_errors off;
}
fastcgi:
spawn-fcgi -a 127.0.0.1 -p 8000 -f fastcgi_server.py -u nginx -P /var/
log/nginx/qfcgi.pid
thanks!
--
http://mail.python.org/mailman/listinfo/python-list
Re: question
Gandalf [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] On May 30, 12:14 am, John Henderson [EMAIL PROTECTED] wrote: Gandalf wrote: how do i write this code in order for python to understand it and print me the x variable x=1 def (): x++ if x 1: print wrong else : print x () Example: x=1 def (x): x += 1 if x 1: return wrong else : return x print (x) John mmm isn't their any global variable for functions? how about def (): y = x+1 if y 1: return wrong else: return y but if you really have to modify x outside of the scope of the function, well, i guess one possibility is to return a tuple, one element being a string that may or may not contain the word wrong and another being x, and then whatever's calling can change x in their own scope based on the return value. but other than that, the normal way to affect a variable beyond the scope of your function is to make a class and affect a class variable. although there is always the 'global' statement also. -- http://mail.python.org/mailman/listinfo/python-list
Re: make a string a list
On May 29, 11:30 pm, Nikhil [EMAIL PROTECTED] wrote: or a string iterable ? How can I do that. I have lots of '\r\n' characters in the string which I think can be easier if it were made into a list and I can easily see if the required value (its a numeral) is present in it or not after some position or after some characters' position. Thanks, Nikhil If you just want to check required value then you can even use Sets or build your own hash table. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python and Flaming Thunder
D'Arcy J.M. Cain [EMAIL PROTECTED] wrote: I guess I am still new to this group and don't understand its charter. I wasn't aware that it was a Flaming Blunder group. Can someone please point me to a newsgroup or mailing list dedicated to the Python programming language? A minor point of netiquette: it's fine to reply by email to a message if you want to make a point off group, but if you are following up to the newsgroup/mailing list please don't CC the original sender: they will see the message in any case on the newsgroup and getting it twice is just likely to annoy. I don't understand your problem: it's just a single thread so killfile or skip it. -- Duncan Booth http://kupuguy.blogspot.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Python and Flaming Thunder
Hallöchen! Duncan Booth writes: [...] I don't understand your problem: it's just a single thread so killfile or skip it. Although I agree with you that there is no problem, *this* is not a good justification for this thread. One should stay on topic in *every* thread. Tschö, Torsten. -- Torsten Bronger, aquisgrana, europa vetus Jabber ID: [EMAIL PROTECTED] (See http://ime.webhop.org for further contact info.) -- http://mail.python.org/mailman/listinfo/python-list
Re: Python threads and memory usage
On May 30, 9:16 am, Dennis Lee Bieber [EMAIL PROTECTED] wrote: On Thu, 29 May 2008 12:01:30 -0700 (PDT), Mike [EMAIL PROTECTED] declaimed the following in comp.lang.python: I observed, that every thread reserved some memory, and after exit thread doesn't freed it. When i leaved my server working for 3 days, then it takes 15% of 512MB memory (during that time about 15000 threads were created and stopped). When server starts it only takes about 1% of memory. Do you have any outstanding references to the threads? If so, have you performed a .join() with the thread? Until you join it, the thread state (thread local objects/variables) are probably being held for access from outside the thread. -- Wulfraed Dennis Lee Bieber KD6MOG [EMAIL PROTECTED] [EMAIL PROTECTED] HTTP://wlfraed.home.netcom.com/ (Bestiaria Support Staff: [EMAIL PROTECTED]) HTTP://www.bestiaria.com/ I'm joining threads only during my program exit. I'll try to do what You suggest. THX -- http://mail.python.org/mailman/listinfo/python-list
Re: should I put old or new style classes in my book?
Alan Isaac [EMAIL PROTECTED] writes: This thread raises two questions for me. 1. I take it from this thread that in Python 3 the following are equivalent: class Test: pass class Test(object): pass Is that correct, and if so, where is it stated explicitly? (I know about the all classes are new style classes statement.) I don't know where it is stated, but how could they *not* be equivalent? 2. I take it from this thread that in Python 2.2+ if I put the following at the top of a module :: __metaclass__ = type then all the classes defined in that module will be newstyle classes. Is that correct? Somehow I did not grok that from URL:http://docs.python.org/ref/metaclasses.html but it seems right. From the URL you quote: The appropriate metaclass is determined by the following precedence rules: * If dict['__metaclass__'] exists, it is used. * Otherwise, if there is at least one base class, its metaclass is used (this looks for a __class__ attribute first and if not found, uses its type). * Otherwise, if a global variable named __metaclass__ exists, it is used. * Otherwise, the old-style, classic metaclass (types.ClassType) is used. Look at the third point. -- Arnaud -- http://mail.python.org/mailman/listinfo/python-list
Re: code of a function
alex23 [EMAIL PROTECTED] writes: Which is very handy, like most of IPython. +1 QOTW -- Pete Forman-./\.- Disclaimer: This post is originated WesternGeco -./\.- by myself and does not represent [EMAIL PROTECTED]-./\.- the opinion of Schlumberger or http://petef.22web.net -./\.- WesternGeco. -- http://mail.python.org/mailman/listinfo/python-list
Re: seg. fault with Py_BuildValue?
Check if either x or y are NULL. They aren't. Just did an explicit check. -- http://mail.python.org/mailman/listinfo/python-list
free computer studies
free computer studies free computer programmes free computer education http://foodplantss.blogspot.com/ -- http://mail.python.org/mailman/listinfo/python-list
Re: should I put old or new style classes in my book?
2008/5/29 Alan Isaac [EMAIL PROTECTED]: This thread raises two questions for me. 1. I take it from this thread that in Python 3 the following are equivalent: class Test: pass class Test(object): pass Is that correct, and if so, where is it stated explicitly? (I know about the all classes are new style classes statement.) All classes are new style classes, and the usual class MyClass(object) pass should be replaced by the first class MyClass: pass IIRC. I don't know ATM where I read it. Matthieu -- French PhD student Website : http://matthieu-brucher.developpez.com/ Blogs : http://matt.eifelle.com and http://blog.developpez.com/?blog=92 LinkedIn : http://www.linkedin.com/in/matthieubrucher -- http://mail.python.org/mailman/listinfo/python-list
Re: Hungarian Notation
On May 27, 12:28 pm, inhahe [EMAIL PROTECTED] wrote: Does anybody know of a list for canonical prefixes to use for hungarian notation in Python? Not that I plan to name all my variables with hungarian notation, but just for when it's appropriate. If it was me, I'd use an empty-defined class: class Fake(object): pass data = 'headinfo=trash;headtrash=info' Header = Fake() Header.Str = data Header.Dict = parse(data) it saves name if it's important (alternatively, you may also use a dict or a tuple/list to store the string/dict pair). But using Fake class just like that is difficult to work with if I need to write to the data (not read only) and synchronizes the data, in that case, it's easy to extend the Fake Class: class Fake(object): def __init__(self, data): self.data = parse(data) def toStr(self): return str(self.data) def fromStr(self, s): self.data = parse(s) Str = property(toStr, fromStr) def toDict(self): return self.data def fromDict(self, s): self.data = s Dict = property(toDict, fromDict) you might go as far as overriding __str__ and __repr__ as appropriate. -- http://mail.python.org/mailman/listinfo/python-list
Re: should I put old or new style classes in my book?
On May 29, 12:07 pm, [EMAIL PROTECTED] wrote: The current edition of the book presents old style classes. I am considering switching to new style classes on the assumption that this should be the default choice for new programs. The drawback is that a lot of the online documentation still uses old style classes. New style, all the way. The drawback you speak of for new-style classes I think is today more of a drawback for old-style. The problem is, when a newbie goes looking for examples, there is a lot of code out there that uses things like properties, type(instance), @staticmethods, and so on. Those won't work, and will confuse the hell out of newbies, if you teach them old-style. OTOH, the examples out there that are written for old-style usually still work for new-style classes. The only significant issue, as far as I'm concerned, is the list of bases. Which is why, even if you only cover new-style classes, it's important to at least mention that there used to exist old-style that don't list any bases (in Python 2.x). And then tell the user, We're not covering it, it's not something you need to worry about, and most of the time you can and should add (object) and the code will still work. And leave it at that--let the interested newbie seek out more information on their own. Carl Banks -- http://mail.python.org/mailman/listinfo/python-list
How to covert ASCII to integer in Python?
YOU SHOULD REMOVE or CORRECT YOUR POST here: http://mail.python.org/pipermail/python-list/2007-February/427841.html It is not true - eg. try : a='P'# P is ASCII , isn't it ? b=int(a) and what you will get ? An error !!! Or probably you yourself should - quote : You probably should go through the tutorial ASAP that is located here: http://docs.python.org/tut/ Ivy.gif-- http://mail.python.org/mailman/listinfo/python-list
Re: Assignment and comparison in one statement
On May 24, 5:59 am, Johannes Bauer [EMAIL PROTECTED] wrote:
Hello group,
I'm just starting with Python and am extremely unexperienced with it so
far. Having a strong C/C++ background, I wish to do something like
if (q = getchar()) {
printf(%d\n, q);
}
or translated to Python:
if (p = myfunction()):
print p
However, this assignment and comparison is not working. What's the
Python way of doing this kind of thing?
Thanks a lot,
Johannes
Python often tries to avoid things it considers bad design in a
language, assignment and comparison is, for example, a bad design
because it is easily mistaken with equality comparison, among other
things. This avoidance of bad design sometimes go as far as making
the way to do something in python completely different than doing
the same thing in other languages, thus it is always a good idea to
state what you intent in doing, rather than stating what you think you
need to do. An example is python's notion for 'for' loop, which can
only loop a list, most people coming from other languages would use
range/xrange here and there, a pythonic code would only rarely use a
range/xrange (usually in situations where the number of repetition is
constant).
Try reasking by stating what you wanted to do, rather than the
abstract question that states what you think you need to do you've
just asked. What functions you wanted to use and for what?
--
http://mail.python.org/mailman/listinfo/python-list
FREE Tutorials on HTML XHTML CSS JavaScript XML XSL ASP SQL ADO VBScript, SAP - ABAP and more...
access all computer tutorials for free visit http://freecomputertutorialz1.blogspot.com/ -- http://mail.python.org/mailman/listinfo/python-list
Re: should I put old or new style classes in my book?
On May 29, 6:07 pm, [EMAIL PROTECTED] wrote: The current edition of the book presents old style classes. I am considering switching to new style classes on the assumption that this should be the default choice for new programs. The drawback is that a lot of the online documentation still uses old style classes. You should use new-style classes. It is the default in Python 2.6 and the only option in 3.0. These releases will be out before your book is on the market. -- http://mail.python.org/mailman/listinfo/python-list
Re: Assignment and comparison in one statement
On May 30, 7:39 pm, Lie [EMAIL PROTECTED] wrote: An example is python's notion for 'for' loop, which can only loop a list[...] Actually, the for statement steps through any object that provides an iterator interface. Lists just happen to be one such object type. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python threads and memory usage
On May 30, 9:42 am, Mike [EMAIL PROTECTED] wrote: On May 30, 9:16 am, Dennis Lee Bieber [EMAIL PROTECTED] wrote: On Thu, 29 May 2008 12:01:30 -0700 (PDT), Mike [EMAIL PROTECTED] declaimed the following in comp.lang.python: I observed, that every thread reserved some memory, and after exit thread doesn't freed it. When i leaved my server working for 3 days, then it takes 15% of 512MB memory (during that time about 15000 threads were created and stopped). When server starts it only takes about 1% of memory. Do you have any outstanding references to the threads? If so, have you performed a .join() with the thread? Until you join it, the thread state (thread local objects/variables) are probably being held for access from outside the thread. -- Wulfraed Dennis Lee Bieber KD6MOG [EMAIL PROTECTED] [EMAIL PROTECTED] HTTP://wlfraed.home.netcom.com/ (Bestiaria Support Staff: [EMAIL PROTECTED]) HTTP://www.bestiaria.com/ I'm joining threads only during my program exit. I'll try to do what You suggest. THX It helped. Now all threads are added to thread list and every some period of time I'm checking which threads are alive (enumerate), and joining all which aren't. Now [memory usage is still on 1% :D:D:D Thanks -- http://mail.python.org/mailman/listinfo/python-list
Re: Saving tif file from tricky webserver
schweet1 schrieb: Greetings, I am attempting to automate accessing and saving a file (a TIF) from the following URL: http://patimg1.uspto.gov/.DImg?Docid=US007376435PageNum=1IDKey=E21184B8FAD5 I have tried some methods using urllib, httplib, and web32com.client(InternetExplorer), but haven't been successful. Currently I am using (in Python 2.5) import webbrowser url = [see above] webbrowser.open(url, new=0, autoraise=0) When this is run a windows popup dialog opens asking me to Open, Save, or Cancel. However, if I query multiple such URLs, I do not want to have to respond manually. Is there a way I can use Python to save the TIF? You need to figure out what really becomes the download url, and use that. Use e.g. http live headers for firefox to get that information. If the server needs the form-submitting stuff to actually grant access to the TIFF, you might need to use mechanize to talk to the site as if you were a browser. Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: ctypes, function pointers and a lot of trouble
Matt [EMAIL PROTECTED] wrote: Okay, thanks a lot for your reply Nick, I think you pushed me back on the right way. Good! Now I started with trying to implement the callback functions and am stuck at the following point: I define my classes/structures/unions: class cdStream(Structure): _fields_ = [(contextH, c_uint), (open, c_void_p), [snip] then i define my functions (right now I do just nothing) and at the same time I define the datatypes like they're listed in my C sample program: def pystreamopen (contextH, mode, pErr): pass cstreamopen = CFUNCTYPE(c_uint, c_ushort, c_uint) [snip] and now the problem starts: i want the pointers in the cdStream Structure point at my functions and tried to do it the following way: data = cdStgMedium() data.type = 0 data.u.pStream.contextH = c_uint(3) #must be some kind of identifier. data.u.pStream.open = cstreamopen(pystreamopen) [snip] unfortunately that doesn't work because Python returns a TypeError: incompatible types, CFunctionType instance instead of c_void_p instance Any ideas/help (please)? Probably the best thing is if you define the union with the types of the pointers to your functions instead of c_void_p, eg class cdStream(Structure): _fields_ = [(contextH, c_uint), (open, cstreamopen), (close, cstreamclose), # etc... This will involve you re-ordering your definitions. Or alternatively, you could cast the function pointer to a c_void_p first, eg data.u.pStream.open = c_void_p( cstreamopen(pystreamopen) ) which should work but is less typesafe. -- Nick Craig-Wood [EMAIL PROTECTED] -- http://www.craig-wood.com/nick -- http://mail.python.org/mailman/listinfo/python-list
Re: Finding file details...
On May 30, 3:03 pm, Kam-Hung Soh [EMAIL PROTECTED] wrote:
Kalibr wrote:
On May 30, 1:41 am, Roger Upole [EMAIL PROTECTED] wrote:
You can use the shell COM objects to access media properties
as shown by Explorer.
import win32com.client
sh=win32com.client.Dispatch('Shell.Application')
folder= r'M:\Music\Bob Dylan\Highway 61 Revisited'
ns=sh.NameSpace(folder)
## the column index for Artist may vary from folder to folder
for c in range(0,255):
colname=ns.GetDetailsOf(None, c)
if colname=='Artists': ## This shows up as just Artist on XP
for i in ns.Items():
artist=ns.GetDetailsOf(i, c)
if artist:
print ns.GetDetailsOf(i, 0), artist
break
Roger
I shall give that a go. (is the module you reference this one?
http://python.net/crew/mhammond/win32/Downloads.html)
If you installed ActiveState's Python, the win32com module should be
installed.
--
Kam-Hung Soh a href=http://kamhungsoh.com/blog;Software Salariman/a
I gave your program a go, and it works magnificently.
Now I have to figure out how tro use it on a song by song basis
(I still suck at using classes).
Thanks so much for your help.
--
http://mail.python.org/mailman/listinfo/python-list
Re: should I put old or new style classes in my book?
[EMAIL PROTECTED] a écrit : Hi All, I am working on a revised edition of How To Think Like a Computer Scientist, which is going to be called Think Python. It will be published by Cambridge University Press, but there will still be a free version under the GNU FDL. You can see the latest version at thinkpython.com; I am revising now, so I welcome all comments, suggestions, corrections, etc. Anyway, I am posting to ask about the current status of new style classes. I am planning to present only one style in the book, because the differences between them don't matter for anything I am doing in the book. The current edition of the book presents old style classes. I am considering switching to new style classes on the assumption that this should be the default choice for new programs. The drawback is that a lot of the online documentation still uses old style classes. Thanks for any guidance you can provide. Same remarks as anyone else that answered so far: definitively use new-style classes, and just add a note about the old-style syntax. -- http://mail.python.org/mailman/listinfo/python-list
Re: Hungarian Notation
Variable names should have prefixes or suffixes (as I prefer) that represent the kind of data they represent rather than the data type itself. For example account_bal_am, order_qt, line_ct, first_nm. Where am is amount, qt is quantity and ct is count. Coding standards could impose rules on datatypes that should be used for these kinds: am (amount) is a currency field and should be represented by decimal values. qt (quantity) is a long, nm a string and so on. On Fri, May 30, 2008 at 3:31 AM, Lie [EMAIL PROTECTED] wrote: On May 27, 12:28 pm, inhahe [EMAIL PROTECTED] wrote: Does anybody know of a list for canonical prefixes to use for hungarian notation in Python? Not that I plan to name all my variables with hungarian notation, but just for when it's appropriate. If it was me, I'd use an empty-defined class: class Fake(object): pass data = 'headinfo=trash;headtrash=info' Header = Fake() Header.Str = data Header.Dict = parse(data) it saves name if it's important (alternatively, you may also use a dict or a tuple/list to store the string/dict pair). But using Fake class just like that is difficult to work with if I need to write to the data (not read only) and synchronizes the data, in that case, it's easy to extend the Fake Class: class Fake(object): def __init__(self, data): self.data = parse(data) def toStr(self): return str(self.data) def fromStr(self, s): self.data = parse(s) Str = property(toStr, fromStr) def toDict(self): return self.data def fromDict(self, s): self.data = s Dict = property(toDict, fromDict) you might go as far as overriding __str__ and __repr__ as appropriate. -- http://mail.python.org/mailman/listinfo/python-list -- | _ | * | _ | | _ | _ | * | | * | * | * | -- http://mail.python.org/mailman/listinfo/python-list
Re: should I put old or new style classes in my book?
On Thu, May 29, 2008 at 3:06 PM, Jason [EMAIL PROTECTED] wrote: I've got Python 3.0 alpha 2. In this version, it looks like you can define classes in either the old style or new style. (I snipped the top line a bit in the following example): Wrong. Py3k Classes are always new-style. They subclass object implicitly when no superclass is given. Python 3.0a2 (r30a2:59405M, Dec 7 2007, 15:23:28 Type help, copyright, credits or license class one(object): pass ... class two: pass ... two class '__main__.two' one class '__main__.one' type(one) type 'type' type(two) type 'type' Both classes are new style. -- Eduardo de Oliveira Padoan http://www.advogato.org/person/eopadoan/ http://twitter.com/edcrypt Bookmarks: http://del.icio.us/edcrypt -- http://mail.python.org/mailman/listinfo/python-list
Python 2.5.2 on Ubuntu Hardy Utf-8-Euro error
I'm playing with an application framework (or kinda) that's developed with python, and it throws this error: File /usr/lib/python2.5/site-packages/Dabo-0.8.3-py2.5.egg/dabo/db/dCursorMixin.py, line 281, in execute sql = unicode(sql, self.Encoding) LookupError: unknown encoding: utf_8_euro At the application (DABO) mailing list, they have pointed that this has to be a Python issue. As I'm a totally python newbie, I would ask if somebody has experimented this kind of error, and if there is any known solution. I've found no clue searching at Google right now. My Python version is 2.5.2, Ubuntu Hardy .deb package. Thanks in advance for your help. -- Josep Sànchez [papapep] -- http://extralinux.net -- signature.asc Description: Això és una part d'un missatge signada digitalment -- http://mail.python.org/mailman/listinfo/python-list
how can i stop script from running on login ?
Hi all, One of my friends played some tricky thing, and now I am in great trouble, please help Here is the scenario [windows xp ]: He wrote one login script and put it on the start program folder under 'All Users' The script is like this it will issue a log off command when we login; due to this I am not able to login to my system even he himself not able to access the system and solve the problem. The main thing is the script is of '.pyw' type so I can't able to close the CMD window to stop this script How can I remove that script? Any help will be appreciated, thanks in advance Abhilash -- http://mail.python.org/mailman/listinfo/python-list
Re: How to get all the variables in a python shell
Your project interests me. Actually I was thinking about doing the same. I hadn't worked on it at all, but I though about it and had the idea about reading the session namespace directly, which I though would be stored in the __dict__ attribute of something. After reading your post, I have been trying a little bit, and I have found a way to do it with ipython. If you open an ipython console, press _ then hit TAB, you'll see it stores some useful information, including all input, all output, and after some searching, a dictionary matching all variables to its values. __IPYTHON__.user_ns There is a little extra stuff in there that you don't want, but that can be easily filtered (the extra stuff is either 'In', 'Out', 'help' or starts with '_'). I've tried it, and you can change the value in that dict to alter the value of the real variable. Say you have a variable 'test': test=5 __IPYTHON__.user_ns['test']=4 print test #prints 5 If I get it right, python is a dynamic language, and you won't break things by messing around with its inner stuff like this, but you better check it. Is this what you had in mind? -- http://mail.python.org/mailman/listinfo/python-list
Generating event from event
I have script which being triggered by pressing CTRL+Right mouse click from any place in my O.P , Now I need to generate automatically event like copy my selected item or double clicking the right mouse cursor without user interfering. how can i implement this width python? thanks! -- http://mail.python.org/mailman/listinfo/python-list
Re: how can i stop script from running on login ?
On Fri, May 30, 2008 at 8:44 AM, abhilash pp [EMAIL PROTECTED][EMAIL PROTECTED] wrote: Hi all, One of my friends played some tricky thing, and now I am in great trouble, please help Here is the scenario [windows xp ]: He wrote one login script and put it on the start program folder under 'All Users' The script is like this it will issue a log off command when we login; due to this I am not able to login to my system even he himself not able to access the system and solve the problem. The main thing is the script is of '.pyw' type so I can't able to close the CMD window to stop this script How can I remove that script? Any help will be appreciated, thanks in advance Abhilash Try running the machine in safe mode, then delete the script. -- http://mail.python.org/mailman/listinfo/python-list
help
hi i wanna paginate my table (x lines per pages),the size of my table is changing according to the user. i wanna know if paginator.py can help me ,if yes how? some one can help me ps:i use django thank you _ Découvrez Windows Live Spaces et créez votre site Web perso en quelques clics ! http://spaces.live.com/signup.aspx-- http://mail.python.org/mailman/listinfo/python-list
Re: seg. fault with Py_BuildValue?
Ok now, I know where the error is: y actually contained refcounts. This, of course, is complete nonsense and causes the interpreter to crash at some point. Thanks to all of you: You helped at least to track down the problem. Christian -- http://mail.python.org/mailman/listinfo/python-list
SQLObject 0.9.7
Hello! I'm pleased to announce version 0.9.7, a minor bug fix release of SQLObject. What is SQLObject = SQLObject is an object-relational mapper. Your database tables are described as classes, and rows are instances of those classes. SQLObject is meant to be easy to use and quick to get started with. SQLObject supports a number of backends: MySQL, PostgreSQL, SQLite, Firebird, Sybase, MSSQL and MaxDB (also known as SAPDB). Where is SQLObject == Site: http://sqlobject.org Development: http://sqlobject.org/devel/ Mailing list: https://lists.sourceforge.net/mailman/listinfo/sqlobject-discuss Archives: http://news.gmane.org/gmane.comp.python.sqlobject Download: http://cheeseshop.python.org/pypi/SQLObject/0.9.7 News and changes: http://sqlobject.org/News.html What's New == News since 0.9.6 Small Features ~~ * Use VARCHAR(MAX) and VARBINARY(MAX) for MSSQL = 9.0. * Run post_funcs after RowDestroySignal. Bug Fixes ~ * Fixed a minor bug in Set column. * A bug fixed for RowCreatedSignal together with InheritableSQLObject: run post_funcs after the entire hierarchy has been created. * Aggregate functions now honors 'distinct'. For a more complete list, please see the news: http://sqlobject.org/News.html Oleg. -- Oleg Broytmannhttp://phd.pp.ru/[EMAIL PROTECTED] Programmers don't die, they just GOSUB without RETURN. -- http://mail.python.org/mailman/listinfo/python-list
SQLObject 0.10.2
Hello! I'm pleased to announce version 0.10.2, a bugfix release of 0.10 branch of SQLObject. What is SQLObject = SQLObject is an object-relational mapper. Your database tables are described as classes, and rows are instances of those classes. SQLObject is meant to be easy to use and quick to get started with. SQLObject supports a number of backends: MySQL, PostgreSQL, SQLite, Firebird, Sybase, MSSQL and MaxDB (also known as SAPDB). Where is SQLObject == Site: http://sqlobject.org Development: http://sqlobject.org/devel/ Mailing list: https://lists.sourceforge.net/mailman/listinfo/sqlobject-discuss Archives: http://news.gmane.org/gmane.comp.python.sqlobject Download: http://cheeseshop.python.org/pypi/SQLObject/0.10.2 News and changes: http://sqlobject.org/News.html What's New == News since 0.10.1 - Small Features ~~ * Use VARCHAR(MAX) and VARBINARY(MAX) for MSSQL = 9.0. * Run post_funcs after RowDestroySignal. Bug Fixes ~ * Fixed a minor bug in Set column. * A bug fixed for RowCreatedSignal together with InheritableSQLObject: run post_funcs after the entire hierarchy has been created. * Aggregate functions now honors 'distinct'. For a more complete list, please see the news: http://sqlobject.org/News.html Oleg. -- Oleg Broytmannhttp://phd.pp.ru/[EMAIL PROTECTED] Programmers don't die, they just GOSUB without RETURN. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 2.5.2 on Ubuntu Hardy Utf-8-Euro error
On May 30, 8:24 am, Josep [EMAIL PROTECTED] wrote: I'm playing with an application framework (or kinda) that's developed with python, and it throws this error: File /usr/lib/python2.5/site-packages/Dabo-0.8.3-py2.5.egg/dabo/db/dCursorMixin.py, line 281, in execute sql = unicode(sql, self.Encoding) LookupError: unknown encoding: utf_8_euro At the application (DABO) mailing list, they have pointed that this has to be a Python issue. As I'm a totally python newbie, I would ask if somebody has experimented this kind of error, and if there is any known solution. I've found no clue searching at Google right now. I've had nothing but problems ever since I upgraded to Hardy. I used to be a die hard Ubuntu fan until recently. Maybe try a better OS My Python version is 2.5.2, Ubuntu Hardy .deb package. Thanks in advance for your help. -- Josep Sànchez [papapep] --http://extralinux.net -- signature.asc 1KDownload -- http://mail.python.org/mailman/listinfo/python-list
Re: should I put old or new style classes in my book?
Eduardo O. Padoan [EMAIL PROTECTED] writes: On Thu, May 29, 2008 at 3:06 PM, Jason [EMAIL PROTECTED] wrote: I've got Python 3.0 alpha 2. In this version, it looks like you can define classes in either the old style or new style. (I snipped the top line a bit in the following example): Wrong. Py3k Classes are always new-style. They subclass object implicitly when no superclass is given. I think he was talking about syntax, not object types. -- Arnaud -- http://mail.python.org/mailman/listinfo/python-list
Re: Generating event from event
Gandalf wrote: I have script which being triggered by pressing CTRL+Right mouse click from any place in my O.P , Now I need to generate automatically event like copy my selected item or double clicking the right mouse cursor without user interfering. how can i implement this width python? thanks! You didn't tell us enough to answer your question. What GUI are you using? Nearly every one of them that I'm aware of allow you to register handlers for such events. -Larry -- http://mail.python.org/mailman/listinfo/python-list
Has a file been opened by another program ?
Hello All, First, Is there a python library, method or module that will tell you if a file has been opened by another program (i.e: Word, PowerPoint, IE etc.), the methods I have found in the standard library will only work with the python open method. Second, I want to take the time to thank each and everyone of you for your help. If you have not already guessed, I am a python novice ( I know your surprised), and I am learning a lot and have discovered alot about python from your answers. So, I just want to say... THANK YOU ! -- http://mail.python.org/mailman/listinfo/python-list
convert string containing list to list (or tuple) type
I'm reading from a database a column that has a list of codes (comma seperated). When I read in the list I have a single value, see code sample below values for a, b, and c. These represent possible values in my database. I need to loop through each value so I can expand my data from this compressed view. My code below works and creates my desired output but I believe there must be a better way this is very messy. My messy function that I'd like to replace is lst_codes(codes). Any alternative suggestions? this is what I begin with a = ',P,' b = ',I,G,AQ,ET,K,BF,' c = ',DZ,' this is what I want (lists or tuples are fine) ['P'] ['I', 'G', 'AQ', 'ET', 'K', 'BF'] ['DZ'] def lst_codes(codes): turn a string of comma seperated codes into a real list object i = 0 lstD = [] while i len(codes): a = codes[i] b = , if (i + 1) len(codes): b = codes[i + 1] i = i + 1 else: b = , if b ,: lstD.append(a + b) i = i + 2 else: lstD.append(a) i = i + 1 return lstD a = ',P,' b = ',I,G,AQ,ET,K,BF,' c = ',DZ,' for ea in (a,b,c): print lst_codes(ea.strip(,)) -- http://mail.python.org/mailman/listinfo/python-list
Re: convert string containing list to list (or tuple) type
Poppy [EMAIL PROTECTED] wrote:
a = ',P,'
b = ',I,G,AQ,ET,K,BF,'
c = ',DZ,'
for ea in (a,b,c):
print lst_codes(ea.strip(,))
Why not just use:
ea.strip(',').split(',')
?
--
Duncan Booth http://kupuguy.blogspot.com
--
http://mail.python.org/mailman/listinfo/python-list
Re: convert string containing list to list (or tuple) type
Arrgh. One of those days where I find an answer just after posting. I spend hours on the code below only to find I don't know how to use split to it's fullest. b.strip(,).split(,) ['I', 'G', 'AQ', 'ET', 'K', 'BF'] Poppy [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] I'm reading from a database a column that has a list of codes (comma seperated). When I read in the list I have a single value, see code sample below values for a, b, and c. These represent possible values in my database. I need to loop through each value so I can expand my data from this compressed view. My code below works and creates my desired output but I believe there must be a better way this is very messy. My messy function that I'd like to replace is lst_codes(codes). Any alternative suggestions? this is what I begin with a = ',P,' b = ',I,G,AQ,ET,K,BF,' c = ',DZ,' this is what I want (lists or tuples are fine) ['P'] ['I', 'G', 'AQ', 'ET', 'K', 'BF'] ['DZ'] def lst_codes(codes): turn a string of comma seperated codes into a real list object i = 0 lstD = [] while i len(codes): a = codes[i] b = , if (i + 1) len(codes): b = codes[i + 1] i = i + 1 else: b = , if b ,: lstD.append(a + b) i = i + 2 else: lstD.append(a) i = i + 1 return lstD a = ',P,' b = ',I,G,AQ,ET,K,BF,' c = ',DZ,' for ea in (a,b,c): print lst_codes(ea.strip(,)) -- http://mail.python.org/mailman/listinfo/python-list
Re: How to covert ASCII to integer in Python?
In article [EMAIL PROTECTED], Skonieczny, Chris [EMAIL PROTECTED] wrote: YOU SHOULD REMOVE or CORRECT YOUR POST here: http://mail.python.org/pipermail/python-list/2007-February/427841.html Why? There's nothing wrong there. It is not true - eg. try : a='P'# P is ASCII , isn't it ? b=int(a) and what you will get ? An error !!! You really don't see any difference between convert '1' to an integer and convert 'P' to an integer? In case there's actually a problem you're trying to solve here, try ord instead of int. Or probably you yourself should - quote : You probably should go through the tutorial ASAP that is located here: http://docs.python.org/tut/ - [Image] -- David C. Ullrich -- http://mail.python.org/mailman/listinfo/python-list
Re: definition of a highlevel language?
On May 26, 6:06 pm, Paul Miller [EMAIL PROTECTED] wrote: On Mon, 26 May 2008 15:49:33 -0400, Dan Upton wrote: On Mon, May 26, 2008 at 3:22 PM, [EMAIL PROTECTED] wrote: I don't know if it would necessarily look like the CPython VM, except for the decode stage (this being said without any knowledge of the CPython implementation, but with more than I ever thought I'd know about processor architecture/microarchitecture) Out of curiosity, do you know how easy it would be to make a Python chip using FPGAs? I have little to no hardware knowledge, but it sounds like a fun project in any case. Even if it's not likely to have blazing performance, it'd be cool to load Python bytecode directly into memory. :-) -- code.py: a blog about Python. http://pythonista.wordpress.com ** Posted fromhttp://www.teranews.com** The python VM is too high level. :-) I think a python CPU would need to be developed in two layers, one that looks like a typical processor and another that executes complex instructions (microcode ?). The low level part takes some weeks (one week or so if you have the whole architecture figured out) in VHDL. Once I claimed to have done this in an April Fool's day. It was fun. :-D -- http://mail.python.org/mailman/listinfo/python-list
Re: UNIX credential passing
[ Kris Kennaway [EMAIL PROTECTED] ] I want to make use of UNIX credential passing on a local domain socket to verify the identity of a user connecting to a privileged service. However it looks like the socket module doesn't implement sendmsg/recvmsg wrappers, and I can't find another module that does this either. Is there something I have missed? http://pyside.blogspot.com/2007/07/unix-socket-credentials-with-python.html Illustrates, how to use socket credentials without sendmsg/recvmsg and so without any need for patching. -- Freedom is always the freedom of dissenters. (Rosa Luxemburg) -- http://mail.python.org/mailman/listinfo/python-list
Re: Generating event from event
On May 30, 3:43 pm, Larry Bates [EMAIL PROTECTED] wrote: Gandalf wrote: I have script which being triggered by pressing CTRL+Right mouse click from any place in my O.P , Now I need to generate automatically event like copy my selected item or double clicking the right mouse cursor without user interfering. how can i implement this width python? thanks! You didn't tell us enough to answer your question. What GUI are you using? Nearly every one of them that I'm aware of allow you to register handlers for such events. -Larry windows xp -- http://mail.python.org/mailman/listinfo/python-list
Re: Getting up and running with Python on a Mac
In article [EMAIL PROTECTED], [EMAIL PROTECTED] wrote: I've just bought an iMac (OS X 10.5.2, will almost immediately jump to 10.5.3), and am looking to install Python on it, and to use it with XCode, Apple's IDE. If that's what you really want to do then start XCode, select New Project and look for the ones with Python in their names. I was excited to hear that Python was going to be automatically integrated into XCode in OS 10.5. I tried it once. I should say I really didn't give it a fair trial - the impression I got from my unfair trial was I'd have to learn a lot about Cocoa to do anything useful. Searched a little, decided to try wxPython next, and I was very happy with that. Seems much easier - also as far as I could see there was nothing but a 'Hello World' example included in XCode, while wxPython comes with a truly amazing suite of complete examples (the C++ wxWidgets book recommends looking at wxPython for the examples!) Some googling suggests that a number of people have had trouble getting Python to run satisfactorily on their Macs. This is my first Mac, and I'd appreciate some guidance on what to do (and what not to) when installing Python and potential problems to keep an eye open for. I want to do a fair bit of scientific / numerical computing, so it would seem that SAGE ot the Enthought Python distribution would seem to be the most relevant - I'd appreciate your guidance on getting Python to run on a Mac with a particular focus on these two distributions. Thank you in advance Thomas Philips -- David C. Ullrich -- http://mail.python.org/mailman/listinfo/python-list
Re: Help needed in choosing an algorithm for Cryptographic services.
On Thu, 29 May 2008 20:27:35 -0500, Larry Bates wrote: abhishek wrote: Hi group, recently my employer asked me too implement encryption/ decryption for secure data transfer over internet. Problem is that the client application is written using C# and the webserver where i need to store the information is developed using python. My situation of dilemma is which cryptographic method suits me best for this purpose. Help/Suggestions are urgently required The proper newsgroup for this question is sci.crypt. Data security is a complex and difficult problem, and you are likely to fail in the worst possible way: implementing something that is weak but that you believe to be strong. Some advice: (1) Use off-the-shelf products like PGP or GPG; don't write your own. (2) Read Bruce Schneier's Applied Cryptography to get a feeling for the dimensions of the problem. (3) Start by composing a clear statement of what you need, avoiding vague terms like security. If you don't know where you're going, you can't tell whether you've arrived. -- To email me, substitute nowhere-spamcop, invalid-net. -- http://mail.python.org/mailman/listinfo/python-list
Re: A video introducing Ulipad, an IDE mainly for Python
In article [EMAIL PROTECTED], Dick Moores [EMAIL PROTECTED] wrote: I've been using Ulipad, a free IDE mainly for Python, and written in wxPython, for a couple of years, and think it's terrific. Now another user, Kelie Feng, has made an 8-minute video showing it off. The visual clarity of the video is remarkable. You can download it (Introducing_Ulipad_2008-05-22.avi), and a codec (tscc.exe) that may be necessary for your player, from http://www.rcblue.com/u3/. I skipped the video and tried Ulipad. Looks very interesting. The documentation I got is mostly in Chinese. Is there an English version somewhere? Dick Moores -- David C. Ullrich -- http://mail.python.org/mailman/listinfo/python-list
Re: How to covert ASCII to integer in Python?
Skonieczny, Chris [EMAIL PROTECTED] wrote: YOU SHOULD REMOVE or CORRECT YOUR POST here: http://mail.python.org/pipermail/python-list/2007-February/427841.html It is not true - eg. try : a='P'# P is ASCII , isn't it ? b=int(a) and what you will get ? An error !!! 'P' is obviously not an ASCII representation of a number. What did you expect? The closest number by visual appearance? cu Philipp -- Dr. Philipp Pagel Lehrstuhl f. Genomorientierte Bioinformatik Technische Universität München http://mips.gsf.de/staff/pagel -- http://mail.python.org/mailman/listinfo/python-list
Re: definition of a highlevel language?
On Mon, May 26, 2008 at 5:06 PM, Paul Miller [EMAIL PROTECTED] wrote: On Mon, 26 May 2008 15:49:33 -0400, Dan Upton wrote: On Mon, May 26, 2008 at 3:22 PM, [EMAIL PROTECTED] wrote: I don't know if it would necessarily look like the CPython VM, except for the decode stage (this being said without any knowledge of the CPython implementation, but with more than I ever thought I'd know about processor architecture/microarchitecture) Out of curiosity, do you know how easy it would be to make a Python chip using FPGAs? I have little to no hardware knowledge, but it sounds like a fun project in any case. Even if it's not likely to have blazing performance, it'd be cool to load Python bytecode directly into memory. :-) I don't really know, but I would guess that it's hard, or at least time-consuming. The best example I can give you is JOP: A Java Optimized Processor which was basically an FPGA-based chip that executed Java bytecode natively. If you're curious, you can read about it at http://www.jopdesign.com/ . It looks like it was done as a PhD thesis at the Vienna University of Technology, and unless Austria has significantly lower PhD requirements... ;) -- http://mail.python.org/mailman/listinfo/python-list
running on WinPC + comunication via USB
Hello, I have two questions. 1/ If I want to use Python and let my WinPC communicate via RS-232 with external embedded computer I know there is a pyserial module, which I can use it. But what will happen if I want to replace RS-232 by USB? I know I can have virtual COM port, but all the configuration parameters basically refer to RS-232 parameters - baudrate, bits, stopbits, parity. In case of USB that's a nonsense I think. Does anybody know? 2/ Second is a basic question. Do I need also cygwin running on my Windows PC to get running Python scripts? Or is that Python interpreter (Win executable) self efficient? Thanks. -- http://mail.python.org/mailman/listinfo/python-list
Re: How to covert ASCII to integer in Python?
On May 30, 10:03�am, Philipp Pagel [EMAIL PROTECTED] wrote: Skonieczny, Chris [EMAIL PROTECTED] wrote: YOU SHOULD REMOVE or CORRECT YOUR POST here: http://mail.python.org/pipermail/python-list/2007-February/427841.html� It is not true - eg. try : a='P' � � � � � �# P is ASCII , isn't it ? b=int(a) and what you will get ? An error !!! 'P' is obviously not an ASCII representation of a number. It is in base 36. a='P' b=int(a,36) b 25 What did you expect? The closest number by visual appearance? cu � � � � Philipp -- Dr. Philipp Pagel Lehrstuhl f. Genomorientierte Bioinformatik Technische Universit�t M�nchenhttp://mips.gsf.de/staff/pagel -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 2.5.2 on Ubuntu Hardy Utf-8-Euro error
Josep wrote:
I'm playing with an application framework (or kinda) that's developed
with python, and it throws this error:
File
/usr/lib/python2.5/site-packages/Dabo-0.8.3-py2.5.egg/dabo/db/dCursorMixin.py,
line 281, in execute
sql = unicode(sql, self.Encoding)
LookupError: unknown encoding: utf_8_euro
At the application (DABO) mailing list, they have pointed that this has
to be a Python issue. As I'm a totally python newbie, I would ask if
somebody has experimented this kind of error, and if there is any known
solution. I've found no clue searching at Google right now.
My Python version is 2.5.2, Ubuntu Hardy .deb package.
Python might get confused by an @EURO suffix in the locale:
$ [EMAIL PROTECTED]
$ python -cimport locale; print locale.getdefaultlocale()
('de_DE', 'utf_8_euro')
Try setting the LANG environment variable to something like
$ LANG=de_DE.UTF-8
$ python -cimport locale; print locale.getdefaultlocale()
('de_DE', 'UTF8')
before you run your program (use ca_ES or whatever you need instead of
de_DE).
Peter
--
http://mail.python.org/mailman/listinfo/python-list
Re: Python and Flaming Thunder
On 2008-05-30, Torsten Bronger [EMAIL PROTECTED] wrote: Hall?chen! Duncan Booth writes: [...] I don't understand your problem: it's just a single thread so killfile or skip it. Although I agree with you that there is no problem, *this* is not a good justification for this thread. One should stay on topic in *every* thread. I've noticed that a lot of things that should be, aren't. The percentage of off-topic threads in c.l.p is extraordinarily low by normal Usenet standards. One oughtn't complain about it lest one jinx things and reduce c.l.p to the state of the rest of Usenet. I wouldn't even consider the thread all that OT, but maybe that's just me. -- Grant Edwards grante Yow! ! Everybody out of at the GENETIC POOL! visi.com -- http://mail.python.org/mailman/listinfo/python-list
Re: help
Take a look at django's built in pagination features: http://www.djangoproject.com/documentation/generic_views/ http://www.djangoproject.com/documentation/pagination/ Also, take a look at the django specific mailing list. [EMAIL PROTECTED] Cheers, Cliff On Fri, 2008-05-30 at 12:59 +, ha bo wrote: hi i wanna paginate my table (x lines per pages),the size of my table is changing according to the user. i wanna know if paginator.py can help me ,if yes how? some one can help me ps:i use django thank you __ Tous vos amis discutent sur Messenger, et vous ? Téléchargez Messenger, c'est gratuit ! -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: running on WinPC + comunication via USB
[EMAIL PROTECTED] schrieb: Hello, I have two questions. 1/ If I want to use Python and let my WinPC communicate via RS-232 with external embedded computer I know there is a pyserial module, which I can use it. But what will happen if I want to replace RS-232 by USB? I know I can have virtual COM port, but all the configuration parameters basically refer to RS-232 parameters - baudrate, bits, stopbits, parity. In case of USB that's a nonsense I think. Does anybody know? Depending on the setup - no, it's the exact same thing. If e.g. the usb-device is a usb2serial converter or otherwise offers it's serveces as a serial-like device, it should work. Additionally, there is libusb + a python-wrapping for that. 2/ Second is a basic question. Do I need also cygwin running on my Windows PC to get running Python scripts? Or is that Python interpreter (Win executable) self efficient? Thanks. No cygwin needed. In fact you need to be careful *not* to mix python and cygwin-python. They can happily co-exist - but installing 3rd-party-packages for one doesn't imply they are available for the other. Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: Generating event from event
Gandalf schrieb: On May 30, 3:43 pm, Larry Bates [EMAIL PROTECTED] wrote: Gandalf wrote: I have script which being triggered by pressing CTRL+Right mouse click from any place in my O.P , Now I need to generate automatically event like copy my selected item or double clicking the right mouse cursor without user interfering. how can i implement this width python? thanks! You didn't tell us enough to answer your question. What GUI are you using? Nearly every one of them that I'm aware of allow you to register handlers for such events. -Larry windows xp Oh please. You have been around here asking enough questions to finally notice that more information is needed - actually, you have been providing this at other times. What GUI-Toolkit are you using, on which OS? Yes, I now *know* that it is WX - because I searched the archives. But that is not the thing here - provide enough information yourself. Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: Python and Flaming Thunder
Hallöchen! Grant Edwards writes: On 2008-05-30, Torsten Bronger [EMAIL PROTECTED] wrote: Duncan Booth writes: [...] I don't understand your problem: it's just a single thread so killfile or skip it. Although I agree with you that there is no problem, *this* is not a good justification for this thread. One should stay on topic in *every* thread. [...] I wouldn't even consider the thread all that OT, but maybe that's just me. Me too, and therefore I see no problem. But one shouldn't break the rules, relying on all others sticking to them. Tschö, Torsten. -- Torsten Bronger, aquisgrana, europa vetus Jabber ID: [EMAIL PROTECTED] (See http://ime.webhop.org for further contact info.) -- http://mail.python.org/mailman/listinfo/python-list
Re: how can i stop script from running on login ?
thanks Benjamin, i have to try it out On Fri, May 30, 2008 at 6:31 PM, Benjamin Kaplan [EMAIL PROTECTED] wrote: On Fri, May 30, 2008 at 8:44 AM, abhilash pp [EMAIL PROTECTED][EMAIL PROTECTED] wrote: Hi all, One of my friends played some tricky thing, and now I am in great trouble, please help Here is the scenario [windows xp ]: He wrote one login script and put it on the start program folder under 'All Users' The script is like this it will issue a log off command when we login; due to this I am not able to login to my system even he himself not able to access the system and solve the problem. The main thing is the script is of '.pyw' type so I can't able to close the CMD window to stop this script How can I remove that script? Any help will be appreciated, thanks in advance Abhilash Try running the machine in safe mode, then delete the script. -- http://mail.python.org/mailman/listinfo/python-list
Re: Generating event from event
Hi Diez, I can't see how it matter which GUI-Toolkit i uses because I can combine libraries. I think all that matter is that i work with windows XP. if you ever done something like that or you familiar with article which can show me how to implement what I asked it would help me Thank you very much -- http://mail.python.org/mailman/listinfo/python-list
Calling instance methods from a decorator
I'm trying to write a decorator that would do something like:
def trace(before, after):
def middle(func):
def inner(*args, **kwargs):
func.im_self.debugfunction(before)
result = func(*args, **kwargs)
func.im_self.debugfunction(after)
return result
return inner
return middle
class Foo(object):
def __init__(self, myname):
self.name = myname
def debugfunction(self, message):
print 'Instance %s says: %s' % (self.name, message)
@trace('calling', 'finished')
def bar(self, arg):
print arg
Foo('snake').bar(123)
Instance snake says: calling
123
Instance snake says: finished
The gotcha seems to be that there's no way to get to 'self' from within the
inner function, since func will only have the normal attributes:
print dir(func)
['__call__', '__class__', '__delattr__', '__dict__', '__doc__', '__get__',
'__getattribute__', '__hash__', '__init__', '__module__', '__name__',
'__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__str__',
'func_closure', 'func_code', 'func_defaults', 'func_dict', 'func_doc',
'func_globals', 'func_name']
There's no nice im_self to bounce off of or anything. I seem to be going
about this all wrong. What's a good approach to get the desired effect?
--
Kirk Strauser
The Day Companies
--
http://mail.python.org/mailman/listinfo/python-list
Re: Calling instance methods from a decorator
Kirk Strauser schrieb:
I'm trying to write a decorator that would do something like:
def trace(before, after):
def middle(func):
def inner(*args, **kwargs):
func.im_self.debugfunction(before)
result = func(*args, **kwargs)
func.im_self.debugfunction(after)
return result
return inner
return middle
class Foo(object):
def __init__(self, myname):
self.name = myname
def debugfunction(self, message):
print 'Instance %s says: %s' % (self.name, message)
@trace('calling', 'finished')
def bar(self, arg):
print arg
Foo('snake').bar(123)
Instance snake says: calling
123
Instance snake says: finished
The gotcha seems to be that there's no way to get to 'self' from within the
inner function, since func will only have the normal attributes:
print dir(func)
['__call__', '__class__', '__delattr__', '__dict__', '__doc__', '__get__',
'__getattribute__', '__hash__', '__init__', '__module__', '__name__',
'__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__str__',
'func_closure', 'func_code', 'func_defaults', 'func_dict', 'func_doc',
'func_globals', 'func_name']
There's no nice im_self to bounce off of or anything. I seem to be going
about this all wrong. What's a good approach to get the desired effect?
Of course you can get the self - just use the first paramter, because it
*is* self. Self is just a parameter - nothing special.
Alternatively, declare inner like this:
def inner(self, *args, **kwargs):
...
try:
return func(self, *args, **kwargs)
finally:
Note the additional try/finally. It's got nothing todo with your
original problem - but you should use it to guarantee that your trace
gets called when leaving the call.
Diez
--
http://mail.python.org/mailman/listinfo/python-list
Re: A video introducing Ulipad, an IDE mainly for Python
At 07:57 AM 5/30/2008, David C. Ullrich wrote: In article [EMAIL PROTECTED], Dick Moores [EMAIL PROTECTED] wrote: I've been using Ulipad, a free IDE mainly for Python, and written in wxPython, for a couple of years, and think it's terrific. Now another user, Kelie Feng, has made an 8-minute video showing it off. The visual clarity of the video is remarkable. You can download it (Introducing_Ulipad_2008-05-22.avi), and a codec (tscc.exe) that may be necessary for your player, from http://www.rcblue.com/u3/. I skipped the video and tried Ulipad. Looks very interesting. The documentation I got is mostly in Chinese. Is there an English version somewhere? F1 will open UliPad Documentations. Check out the HowTo's and the FAQ. And subscribe to the Ulipad list at Google Groups (http://groups.google.com/group/ulipad). The main developer, Limodou, is in Beijing, but he's very quick in answering questions posed to the list. Dick Moores -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 2.5.2 on Ubuntu Hardy Utf-8-Euro error
File /usr/lib/python2.5/site-packages/Dabo-0.8.3-py2.5.egg/dabo/db/dCursorMixin.py, line 281, in execute sql = unicode(sql, self.Encoding) LookupError: unknown encoding: utf_8_euro At the application (DABO) mailing list, they have pointed that this has to be a Python issue. It's definitely not a Python issue. As I'm a totally python newbie, I would ask if somebody has experimented this kind of error, and if there is any known solution. I've found no clue searching at Google right now. The problem is that self.Encoding is incorrect - it should not be utf_8_euro. Instead, it should be UTF-8 (or perhaps utf_8). DABO shouldn't use locale.getdefaultlocale()[1], but locale.getpreferredencoding(). Regards, Martin -- http://mail.python.org/mailman/listinfo/python-list
PyDev multiple source files?
Newbie questions on PyDev project setup. Things are going fine - writing python code in eclipse/pydev and running them with various imports etc, doing wxpython stuff blah, blah, blah. My .py code is in a module, in a package, in a project. It runs fine. Now I want to be able to break my single source file up into multiple files to segregate functions, divide up with others, etc, but I don't know how to configure it. I pulled one simple class definition out of my single source file and created a new .py file with just that in there. But now I'm stalled... What is the equivalent of an 'include' statement. I assume there's something I put into one .py file to say I'm using stuff in another local .py file. I tried using import but it doesn't seem to work - ie code doesn't know about the class in the other file. Also, how about global vars that are needed across multiple .py files? Where do I declare them to be understood in all the files that use that global. I suspect there is something I do in __init__.py - perhaps the equivalent of 'include' statements in there with all my globals stuffed in there too??? I'm lost here, but will continue to play with it. Any hints appreciated. Surely all python developers don't cram everything into one huge file (I hope). Ross. -- http://mail.python.org/mailman/listinfo/python-list
Re: Help needed in choosing an algorithm for Cryptographic services.
abhishek [EMAIL PROTECTED] writes: Hi group, recently my employer asked me too implement encryption/ decryption for secure data transfer over internet. Problem is that the client application is written using C# and the webserver where i need to store the information is developed using python. Use one of the SSL wrappers. Note that if you're using a recent Debian distro, make sure to take the latest OpenSSL update since they had an unbelievably bad screwup that destroyed their versions of OpenSSL's security for a while. That applies to all Debian based distros including Ubuntu, but not to non-Debian derivatives such as Fedora. -- http://mail.python.org/mailman/listinfo/python-list
Re: Generating event from event
On May 30, 12:11 pm, Gandalf [EMAIL PROTECTED] wrote: Hi Diez, I can't see how it matter which GUI-Toolkit i uses because I can combine libraries. I think all that matter is that i work with windows XP. if you ever done something like that or you familiar with article which can show me how to implement what I asked it would help me Thank you very much It matters because each Python GUI toolkit works differently. Tkinter does it via Tk/tcl calls, wxPython uses the wx library and pyGTK does it in yet another way. The basic ideas are the same, but the implementations are quite different. In wx, for example, there are mouse events called wx.MouseEvent: http://www.wxpython.org/docs/api/wx.MouseEvent-class.html In Tkinter, they do the same thing, but the calls are almost completely different. See the following for examples: http://www.pythonware.com/library/tkinter/introduction/events-and-bindings.htm You probably either want the MouseEvents or to create an AcceleratorTable. Mike -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 2.5.2 on Ubuntu Hardy Utf-8-Euro error
Martin v. Löwis wrote:
File
/usr/lib/python2.5/site-packages/Dabo-0.8.3-py2.5.egg/dabo/db/dCursorMixin.py,
line 281, in execute
sql = unicode(sql, self.Encoding)
LookupError: unknown encoding: utf_8_euro
At the application (DABO) mailing list, they have pointed that this has
to be a Python issue.
It's definitely not a Python issue.
As I'm a totally python newbie, I would ask if
somebody has experimented this kind of error, and if there is any known
solution. I've found no clue searching at Google right now.
The problem is that self.Encoding is incorrect - it should not be
utf_8_euro. Instead, it should be UTF-8 (or perhaps utf_8). DABO
shouldn't use locale.getdefaultlocale()[1], but
locale.getpreferredencoding().
I think that is the effect of a bug:
locale._parse_localename([EMAIL PROTECTED])
('en_US', 'utf_8_euro')
The function first normalizes the @ away and then looks for it. Is that
the expected behaviour?
Peter
--
http://mail.python.org/mailman/listinfo/python-list
Re: PyDev multiple source files?
On May 30, 2:10 pm, RossGK [EMAIL PROTECTED] wrote: Now I want to be able to break my single source file up into multiple files to segregate functions, divide up with others, etc, but I don't know how to configure it. Found a reference that helped me out: http://www.python.org/doc/2.1.3/tut/node8.html The keys for me are that a) a file named junk.py is called a module (I thought a module was a set of files within a package - nope just a source file). Import is the right thing for an 'include' action - but after you import you need to hierarchically reference the contents of the imported module. So if my junk.py 'module' contains a def things, then after I have done my import junk I refer to things as junk.things Global seem to have a scope of only their current module. So the question that comes to mind is how to create a global global. Can I stick it into __init_.py or something and have it available for the whole package? -- http://mail.python.org/mailman/listinfo/python-list
RE: PyDev multiple source files?
the short answer is a file is a module; therefore to 'include' access to 'myclass' in file xyz.py from another file called 'abc.py' you would put this in abc.py import xyz #note no '.py' x = xyz.myclass() or from xyz import myclass #if you're lazy use ... import * x = myclass() see the basic tutorial on modules and importing -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of RossGK Sent: Friday, May 30, 2008 2:10 PM To: python-list@python.org Subject: PyDev multiple source files? Newbie questions on PyDev project setup. Things are going fine - writing python code in eclipse/pydev and running them with various imports etc, doing wxpython stuff blah, blah, blah. My .py code is in a module, in a package, in a project. It runs fine. Now I want to be able to break my single source file up into multiple files to segregate functions, divide up with others, etc, but I don't know how to configure it. I pulled one simple class definition out of my single source file and created a new .py file with just that in there. But now I'm stalled... What is the equivalent of an 'include' statement. I assume there's something I put into one .py file to say I'm using stuff in another local .py file. I tried using import but it doesn't seem to work - ie code doesn't know about the class in the other file. Also, how about global vars that are needed across multiple .py files? Where do I declare them to be understood in all the files that use that global. I suspect there is something I do in __init__.py - perhaps the equivalent of 'include' statements in there with all my globals stuffed in there too??? I'm lost here, but will continue to play with it. Any hints appreciated. Surely all python developers don't cram everything into one huge file (I hope). Ross. -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: Calling instance methods from a decorator
At 2008-05-30T17:40:17Z, Diez B. Roggisch [EMAIL PROTECTED] writes: Of course you can get the self - just use the first paramter, because it *is* self. Self is just a parameter - nothing special. If I blame it on being a long week, can I keep my geek card? -- Kirk Strauser The Day Companies -- http://mail.python.org/mailman/listinfo/python-list
Spring Python version 0.5.0 is released
Spring Python (http://springpython.webfactional.com) version 0.5.0 was released today. It contains updates to DatabaseTemplate and DatabaseTransactions, along with more testing underneath MySQL, PostGreSQL, and Sqlite. Support for Oracle has been added, but only minimally tested so far. Spring Python has been re-licensed underneath the Apache License 2.0, making it more business friendly. Greg -- http://mail.python.org/mailman/listinfo/python-list
python, dlls, and multiple instances
Is it a correct to assume that you can use multiple instances of python altogether if each is loaded from a separate dll? For instance, if I write a couple of dll/so libs, and each has python statically linked in, is it safe to assume that since dlls use their own address space then each dll would have it's own GIL, and will therefore coexist safely within the same app? This is correct across all platforms, yes? I ask because I will be writing an audio plugin that uses python both for the gui and the audio thread. The audio thread must not be blocked, and will also be set up as a restricted execution environment to prevent the usual dangerous calls to open, socket, etc. The python running in the application thread may be blocked and may do whatever it wants. I think my understanding is correct since our current dll implementation statically links python, and I know that the host app (Ableton Live) also uses python for it's scripting engine. This should be fun, since I've wanted to write a recipe for using python in an audio plugin GUIs for a while now. Cheers! -- http://mail.python.org/mailman/listinfo/python-list
Re: make a string a list
or a string iterable ? How can I do that. I have lots of '\r\n' characters in the string which I think can be easier if it were made into a list and I can easily see if the required value (its a numeral) is present in it or not after some position or after some characters' position. They already are. They are quite like lists in many ways: s = 'abcdefg' for c in s: print c ... a b c d e f g s[3] 'd' s = foo\r\n s.find(\r) 3 s.replace(\r, ).replace(\n, ) 'foo' ** Posted from http://www.teranews.com ** -- http://mail.python.org/mailman/listinfo/python-list
accumulator generators
I was reading this a href=this http://www.paulgraham.com/icad.html;Paul Graham article/a and he builds an accumuator generator function in the appendix. His looks like this: pre def foo(n): s = [n] def bar(i): s[0] += i return s[0] return bar /pre Why does that work, but not this: pre def foo(n): s = n def bar(i): s += i return s return bar /pre -- http://mail.python.org/mailman/listinfo/python-list
Re: should I put old or new style classes in my book?
In article [EMAIL PROTECTED], [EMAIL PROTECTED] wrote: Anyway, I am posting to ask about the current status of new style classes. I am planning to present only one style in the book, because the differences between them don't matter for anything I am doing in the book. You've got a tough use-case. When is your book supposed to be done? To what extent to you want to make your book work with 3.x? Overall, I'm generally in favor of presenting both (I'm opposed to new-style-only), but in your case it sounds like just new-style would be better. -- Aahz ([EMAIL PROTECTED]) * http://www.pythoncraft.com/ Need a book? Use your library! -- http://mail.python.org/mailman/listinfo/python-list
Re: The Importance of Terminology's Quality
På Fri, 30 May 2008 02:56:37 +0200, skrev David Combs [EMAIL PROTECTED]: In article [EMAIL PROTECTED], Robert Maas, http://tinyurl.com/uh3t [EMAIL PROTECTED] wrote: From: [EMAIL PROTECTED] [EMAIL PROTECTED] the importance of naming of functions. Lisp is *so* early a language (1960?), preceeded mainly only by Fortran (1957?)?, and for sure the far-and-away the first as a platform for *so many* concepts of computer-science, eg lexical vs dynamic (special) variables, passing *unnamed* functions as args (could Algol 60 also do something like that, via something it maybe termed a thunk), maybe is still the only one in which program and data have the same representation -- that it'd seem logical to use it's terminology in all languages. From C is the very nice distinction between formal and actual args. And from algol-60, own and local -- own sure beats static! And so on. To me, it's too bad that that hacker-supreme (and certified genius) Larry W. likes to make up his own terminology for Perl. Sure makes for a lot of otherwise-unnecessary pages in the various Perl texts, as well as posts here. Of course, a whole lot better his terminology than no language at all! David Perl is solidly based in the UNIX world on awk, sed, bash and C. I don't like the style, but many do. -- John Thingstad -- http://mail.python.org/mailman/listinfo/python-list
Re: accumulator generators
Cameron schrieb: I was reading this a href=this http://www.paulgraham.com/icad.html;Paul Graham article/a and he builds an accumuator generator function in the appendix. His looks like this: pre def foo(n): s = [n] def bar(i): s[0] += i return s[0] return bar /pre Why does that work, but not this: pre def foo(n): s = n def bar(i): s += i return s return bar /pre Because python's static analysis infers s as being a variable local to bar in the second case - so you can't modify it in the outer scope. In the future, you may declare def bar(i): nonlocal s ... Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: Showing the method's class in expection's traceback
To this therad, I received 2 kinds of anwsers: - some that help me in - and other where some guy thinks that has the right to rule if my need has some value Thanksfully, Python is an open platform, and with the help obtained here, now I can fullfill my needs. Who is the arrogant? On 22 mayo, 11:59, Bruno Desthuilliers bruno. [EMAIL PROTECTED] wrote: Agustin Villena a écrit : On May 22, 5:19 am, Bruno Desthuilliers bruno. [EMAIL PROTECTED] wrote: Agustin Villena a écrit : And not that useful - why would one care about the function being defined in class X or Y when one have the exact file and line ? I have 3 reasons: 1) My developing time is expended running unit tests and browsing tracebacks to find which is the real problem. Knowing the offender class (instead of the method alone) makes me understand more quickly which component of my software is failing. This is only true when there is an obvious, one-to-one, unambiguous relationship between the physical location of the error (file, line) and the class of the object the method has been called on. Which is not necessarily the case (inheritance, method decoration and monkeypatching comes to mind here...). Also, your above statement seems to imply that component==class, which is not the case in Python. 2) There are some ocassions where I only have the traceback (e.g. when analyzing an app's log) and no inmediate access to teh source code Ok. But the above still apply... 3) And finally, for completeness: If a function is really a method, if the tracebackshowonly its name and not the class that defines it, for me its a bug, because the method name has no sense out of its class. I'm not sure you really grasp what methods are in Python. What you define (using the def statement) within a class is function, not a method. It only becomes a method when it's looked up on an instance or class object, and this 'method' is only a thin wrapper around the instance, class and function objects. And FWIW, you don't need to define the function within the class to make it a method: # bar.py def bar(obj): print function bar.bar called on obj %s % obj # foo.py class Foo(object): pass # baaz.py from foo import Foo import bar Foo.baaz = bar.bar def guux(obj): print function baaz.guux called on obj %s % obj # main.py from baaz import Foo f = Foo() f.bar() f.gnix = baae.guux.__get__(f, type(f)) f.gnix() Not to say that your concerns are pointless, and that things cannot be improved somehow, but this is not that trivial, and there may be ambuiguities in some not so rare cases. Well, the solution given in an early response is good enough for me. Not for me. I don't see things like you, because I'm accustomed to design my software though classes and see the code in an object = software's functional atom/component way I guess you mean 'class = software's functional atom/component' - because it's perfectly legal, in Python, to have per-instance methods... Now the fact that *you* see it that way doesn't mean Python (and most Python users) have to share your views, so labelling the way it works as a bug sounds a bit arrogant to me. I agree that python's dynamic nature make things complicated here, but for me it its just an implementation problem derived of the recent OOP support of python I beg your pardon ? recent OOP support in Python ? Python had classes and objects years before Oak was renamed as Java and made public, you know. -- http://mail.python.org/mailman/listinfo/python-list
Re: accumulator generators
At 2008-05-30T19:50:43Z, Cameron [EMAIL PROTECTED] writes: Why does that work, but not this: def foo(n): s = n def bar(i): s += i return s return bar Assume that n is an int, making s one also. Ints are immutable; you can only copy them. So your bar is taking s, adding i to it, then assigning the value back to the local variable named s. -- Kirk Strauser The Day Companies -- http://mail.python.org/mailman/listinfo/python-list
Re: php vs python
Jerry Stuckle wrote: As I've said before - good programmers can write good code in any language. So... an eloquent speaker of English is also an eloquent speaker of Spanish/French/German? I think your statement would be correct if worded: some programmers can write good code in any language. There's a reason why computer coding paradigms are called 'languages' -- because they are, and as such they require different ways of thinking. Just because someone is good at playing pianos doesn't mean they are also good at wood carving. Just because someone is good (i.e. writes good code) in C / PHP / Python / Perl / Assembly / whatever does not inherently mean that that same person will be able to write good code in any other language. That's one reason why there are so many to choose from: different people think differently and most are only optimal in certain areas. Or perhaps your definition of a good programmer means somebody who can write good code in any language? What then is a programmer who can only write good code in a handful of languages? Or maybe only two languages? Or even only one? My definition of a good programmer is someone who can write good code in a computer language. I would use the word 'versatile' or even 'multi-lingual' to broaden the scope to more than one language. -- Ethan P.S. My apologies, Jerry, for writing back to you directly -- I haven't yet discovered how to post to newsgroups, and I do not know the php mailing list address. I guess by both our definitions I am not a 'good newsgroup poster.' ;-) -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 2.5.2 on Ubuntu Hardy Utf-8-Euro error
On 2008-05-30 17:41, Peter Otten wrote:
Josep wrote:
I'm playing with an application framework (or kinda) that's developed
with python, and it throws this error:
File
/usr/lib/python2.5/site-packages/Dabo-0.8.3-py2.5.egg/dabo/db/dCursorMixin.py,
line 281, in execute
sql = unicode(sql, self.Encoding)
LookupError: unknown encoding: utf_8_euro
At the application (DABO) mailing list, they have pointed that this has
to be a Python issue. As I'm a totally python newbie, I would ask if
somebody has experimented this kind of error, and if there is any known
solution. I've found no clue searching at Google right now.
My Python version is 2.5.2, Ubuntu Hardy .deb package.
Python might get confused by an @EURO suffix in the locale:
Right, that's what's happening.
The locale module uses a locale aliasing table that help map environment
locale settings to C local names.
That table was last updated in 2004 and since then a lot more
locale variable strings have made their way into the Linux
distros.
I guess we need to update the table...
$ [EMAIL PROTECTED]
$ python -cimport locale; print locale.getdefaultlocale()
('de_DE', 'utf_8_euro')
Try setting the LANG environment variable to something like
$ LANG=de_DE.UTF-8
$ python -cimport locale; print locale.getdefaultlocale()
('de_DE', 'UTF8')
before you run your program (use ca_ES or whatever you need instead of
de_DE).
Peter
--
http://mail.python.org/mailman/listinfo/python-list
--
Marc-Andre Lemburg
eGenix.com
Professional Python Services directly from the Source (#1, May 30 2008)
Python/Zope Consulting and Support ...http://www.egenix.com/
mxODBC.Zope.Database.Adapter ... http://zope.egenix.com/
mxODBC, mxDateTime, mxTextTools ...http://python.egenix.com/
Try mxODBC.Zope.DA for Windows,Linux,Solaris,MacOSX for free !
eGenix.com Software, Skills and Services GmbH Pastor-Loeh-Str.48
D-40764 Langenfeld, Germany. CEO Dipl.-Math. Marc-Andre Lemburg
Registered at Amtsgericht Duesseldorf: HRB 46611
--
http://mail.python.org/mailman/listinfo/python-list
Re: should I put old or new style classes in my book?
Alan Isaac [EMAIL PROTECTED] writes: I take it from this thread that in Python 3 the following are equivalent: class Test: pass class Test(object): pass Arnaud Delobelle wrote: I don't know where it is stated, but how could they *not* be equivalent? The most obvious way would be that the former became an illegal syntax. But in Python 3 alpha, it is accepted, so I assume that it will continue to be? Cheers, Alan Isaac -- http://mail.python.org/mailman/listinfo/python-list
ThreadPoolingMixIn
Hi, everybody! I wrote a useful class ThreadPoolingMixIn which can be used to create fast thread-based servers. This mix-in works much faster than ThreadingMixIn because it doesn't create a new thread on each request. Is it worth including in SocketServer.py? from __future__ import with_statement from SocketServer import ThreadingMixIn import threading import Queue class ThreadPoolingMixIn(ThreadingMixIn): Mix-in class to handle requests in a thread pool. The pool grows and thrinks depending on load. For instance, a threading UDP server class is created as follows: class ThreadPoolingUDPServer(ThreadPoolingMixIn, UDPServer): pass __author__ = 'Pavel Uvarov [EMAIL PROTECTED]' def init_thread_pool(self, min_workers = 5, max_workers = 100, min_spare_workers = 5): Initialize thread pool. self.q = Queue.Queue() self.min_workers = min_workers self.max_workers = max_workers self.min_spare_workers = min_spare_workers self.num_workers = 0 self.num_busy_workers = 0 self.workers_mutex = threading.Lock() self.start_workers(self.min_workers) def start_workers(self, n): Start n workers. for i in xrange(n): t = threading.Thread(target = self.worker) t.setDaemon(True) t.start() def worker(self): A function of a working thread. It gets a request from queue (blocking if there are no requests) and processes it. After processing it checks how many spare workers are there now and if this value is greater than self.min_spare_workers then the worker exits. Otherwise it loops infinitely. with self.workers_mutex: self.num_workers += 1 while True: (request, client_address) = self.q.get() with self.workers_mutex: self.num_busy_workers += 1 self.process_request_thread(request, client_address) self.q.task_done() with self.workers_mutex: self.num_busy_workers -= 1 if self.num_workers - self.num_busy_workers \ self.min_spare_workers: self.num_workers -= 1 return def process_request(self, request, client_address): Puts a request into queue. If the queue size is too large, it adds extra worker. self.q.put((request, client_address)) with self.workers_mutex: if self.q.qsize() 3 and self.num_workers self.max_workers: self.start_workers(1) def join(self): Wait for all busy threads self.q.join() -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 2.5.2 on Ubuntu Hardy Utf-8-Euro error
On 2008-05-30 22:37, M.-A. Lemburg wrote:
On 2008-05-30 17:41, Peter Otten wrote:
Josep wrote:
I'm playing with an application framework (or kinda) that's developed
with python, and it throws this error:
File
/usr/lib/python2.5/site-packages/Dabo-0.8.3-py2.5.egg/dabo/db/dCursorMixin.py,
line 281, in execute
sql = unicode(sql, self.Encoding)
LookupError: unknown encoding: utf_8_euro
At the application (DABO) mailing list, they have pointed that this has
to be a Python issue. As I'm a totally python newbie, I would ask if
somebody has experimented this kind of error, and if there is any known
solution. I've found no clue searching at Google right now.
My Python version is 2.5.2, Ubuntu Hardy .deb package.
Python might get confused by an @EURO suffix in the locale:
Right, that's what's happening.
The locale module uses a locale aliasing table that help map environment
locale settings to C local names.
That table was last updated in 2004 and since then a lot more
locale variable strings have made their way into the Linux
distros.
I guess we need to update the table...
I've opened ticket http://bugs.python.org/issue3011 for this.
$ [EMAIL PROTECTED]
$ python -cimport locale; print locale.getdefaultlocale()
('de_DE', 'utf_8_euro')
Try setting the LANG environment variable to something like
$ LANG=de_DE.UTF-8
$ python -cimport locale; print locale.getdefaultlocale()
('de_DE', 'UTF8')
before you run your program (use ca_ES or whatever you need instead of
de_DE).
Peter
--
http://mail.python.org/mailman/listinfo/python-list
--
Marc-Andre Lemburg
eGenix.com
Professional Python Services directly from the Source (#1, May 30 2008)
Python/Zope Consulting and Support ...http://www.egenix.com/
mxODBC.Zope.Database.Adapter ... http://zope.egenix.com/
mxODBC, mxDateTime, mxTextTools ...http://python.egenix.com/
Try mxODBC.Zope.DA for Windows,Linux,Solaris,MacOSX for free !
eGenix.com Software, Skills and Services GmbH Pastor-Loeh-Str.48
D-40764 Langenfeld, Germany. CEO Dipl.-Math. Marc-Andre Lemburg
Registered at Amtsgericht Duesseldorf: HRB 46611
--
http://mail.python.org/mailman/listinfo/python-list
SMS sending and receiving from website?
can i send and receive messages from a website using python? how would that work with costs? would the mobileowner pay both ways? -- http://mail.python.org/mailman/listinfo/python-list
Importing modules from packages with relative imports
With the old import system, and a package that looks like this: foo/ __init__.py main.py bar/ __init__.py baz.py If I wanted to delay importing baz until it was actually used, I could leave the __init__.py files empty and simply import bar.baz. However, with the new relative imports syntax, from . import bar.baz causes a syntax error. I could use something like from .bar import baz as bar_baz, but that's long, annoying to write, and requires changing all the uses of bar.baz.spam to bar_baz.spam through the file. Is there any way to achieve the bar.baz name with relative imports? -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 2.5.2 on Ubuntu Hardy Utf-8-Euro error
The function first normalizes the @ away and then looks for it. Is that the expected behaviour? I believe this functionality is broken by design. Python can't possibly know correctly what each locale name on each system means, and what encoding is used in the locale. Instead, the system's API to find out the encoding should be used, as exposed in locale.getpreferredencoding(). Regards, Martin -- http://mail.python.org/mailman/listinfo/python-list
Re: accumulator generators
On May 30, 1:04 pm, Diez B. Roggisch [EMAIL PROTECTED] wrote: Cameron schrieb: I was reading this a href=thishttp://www.paulgraham.com/icad.html;Paul Graham article/a and he builds an accumuator generator function in the appendix. His looks like this: pre def foo(n): s = [n] def bar(i): s[0] += i return s[0] return bar /pre Why does that work, but not this: pre def foo(n): s = n def bar(i): s += i return s return bar /pre Because python's static analysis infers s as being a variable local to bar in the second case - so you can't modify it in the outer scope. In the future, you may declare def bar(i): nonlocal s ... Diez thanks for the response. Just to make sure I understand- Is the reason it works in the first case because s[0] is undefined at that point (in bar), and so python looks in the outer scope and finds it there? Cameron -- http://mail.python.org/mailman/listinfo/python-list
Re: Help needed in choosing an algorithm for Cryptographic services.
[ Peter Pearson [EMAIL PROTECTED] ] On Thu, 29 May 2008 20:27:35 -0500, Larry Bates wrote: abhishek wrote: Hi group, recently my employer asked me too implement encryption/ decryption for secure data transfer over internet. Problem is that the client application is written using C# and the webserver where i need to store the information is developed using python. My situation of dilemma is which cryptographic method suits me best for this purpose. Help/Suggestions are urgently required Data security is a complex and difficult problem, and you are likely to fail in the worst possible way: implementing something that is weak but that you believe to be strong. Some advice: (1) Use off-the-shelf products like PGP or GPG; don't write your own. full ack. (2) Read Bruce Schneier's Applied Cryptography to get a feeling for the dimensions of the problem. While this book is most certainly worth reading, I doubt, that it is necessary to gain in-depth knowledge of cryptography to make use of it in your code. If you transfer data over SSL-connection, you should rely on them being safe, you don't need to understand the details. You only need to know, what SSL can protect against, and what it can't protect against. -- Freedom is always the freedom of dissenters. (Rosa Luxemburg) -- http://mail.python.org/mailman/listinfo/python-list
Re: accumulator generators
Cameron wrote: On May 30, 1:04 pm, Diez B. Roggisch [EMAIL PROTECTED] wrote: Cameron schrieb: I was reading this a href=thishttp://www.paulgraham.com/icad.html;Paul Graham article/a and he builds an accumuator generator function in the appendix. His looks like this: pre def foo(n): s = [n] def bar(i): s[0] += i return s[0] return bar /pre Why does that work, but not this: pre def foo(n): s = n def bar(i): s += i return s return bar /pre Because python's static analysis infers s as being a variable local to bar in the second case - so you can't modify it in the outer scope. In the future, you may declare def bar(i): nonlocal s ... Diez thanks for the response. Just to make sure I understand- Is the reason it works in the first case because s[0] is undefined at that point (in bar), and so python looks in the outer scope and finds it there? You can refer to variables in enclosing scopes, just not redefine them in that same scope. That's why in the first example, bar can refer to to s (defined in foo). By assigning to s[0], it modifies the list, which is OK; trying to redefine the name 's' (like the second example tries to do) would not be OK. Also see: http://zephyrfalcon.org/labs/python_pitfalls.html (pitfall #6). -- Hans Nowak (zephyrfalcon at gmail dot com) http://4.flowsnake.org/ -- http://mail.python.org/mailman/listinfo/python-list
Re: UNIX credential passing
Sebastian 'lunar' Wiesner wrote:
[ Kris Kennaway [EMAIL PROTECTED] ]
I want to make use of UNIX credential passing on a local domain socket
to verify the identity of a user connecting to a privileged service.
However it looks like the socket module doesn't implement
sendmsg/recvmsg wrappers, and I can't find another module that does this
either. Is there something I have missed?
http://pyside.blogspot.com/2007/07/unix-socket-credentials-with-python.html
Illustrates, how to use socket credentials without sendmsg/recvmsg and so
without any need for patching.
Thanks to both you and Paul for your suggestions. For the record, the
URL above is linux-specific, but it put me on the right track. Here is
an equivalent FreeBSD implementation:
def getpeereid(sock):
Get peer credentials on a UNIX domain socket.
Returns a nested tuple: (uid, (gids))
LOCAL_PEERCRED = 0x001
NGROUPS = 16
#struct xucred {
#u_int cr_version; /* structure layout version */
#uid_t cr_uid; /* effective user id */
#short cr_ngroups; /* number of groups */
#gid_t cr_groups[NGROUPS]; /* groups */
#void*_cr_unused1; /* compatibility with old ucred */
#};
xucred_fmt = '2ih16iP'
res = tuple(struct.unpack(xucred_fmt, sock.getsockopt(0,
LOCAL_PEERCRED, struct.calcsize(xucred_fmt
# Check this is the above version of the structure
if res[0] != 0:
raise OSError
return (res[1], res[3:3+res[2]])
Kris
--
http://mail.python.org/mailman/listinfo/python-list
Re: The Importance of Terminology's Quality
John Thingstad wrote: Perl is solidly based in the UNIX world on awk, sed, bash and C. I don't like the style, but many do. Please exclude the Java newsgroups from this discussion. -- Lew -- http://mail.python.org/mailman/listinfo/python-list
