Re: Doc suggestions (was: Why "class exceptions" are not deprecated?)
[EMAIL PROTECTED] wrote: > > and for the record: the infogami setup had never happened if Ed hadn't > > written that post. > > I wouldn't rest on my laurels quite yet if I were you. > You've provided a good piece to take care of the input > collection side of the equasion but I've seen nothing > that deals with the output side (wiki -> docs). no, but that's because you're the kind of pathetic loser who only sees problem with things, and only pops up when you have a chance to piss on something. -- http://mail.python.org/mailman/listinfo/python-list
PySimpleXML 1.0 Stable
PySimpleXML 1.0 stable has been released. It allows a Python user to easily access XML elements via a structure of Python dictionaries and lists, xml.dom.minidom Document, or string. PySimpleXML simplifies the translation of XML documents into very usable trees of Python structures (dictionaries, lists, etc), and also simplifies the translation from those structures back to XML or pretty XML. Specifically, this library can convert a DOM object, Python struct, XML file, or XML string into any other item in that list. Cheese Show Package: http://cheeseshop.python.org/pypi?name=PySimpleXML&version=1.0&:action=display For more information, examples, documentation, or to download PySimpleXML, please visit the homepage for PySimpleXML: http://shellsage.com/?q=node/12 -- Vic Fryzel (lists at shellsage dot com) http://shellsage.com/ Key id 237BD73A = 4511 20DB 3DCF 6856 12BB 888B 9343 B277 237B D73A pgpe5r0R8abhD.pgp Description: PGP signature -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 2.5 licensing: stop this change
"walterbyrd" wrote: > Please post a link to the original article. Not just a post to a blog. the pyfound blog is the official PSF blog; it's linked from the PSF:s homepage: http://www.python.org/psf/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Site err? - modpython - django?
"EP" <[EMAIL PROTECTED]> wrote: > i am gettng slow response from thssite en wonder if problem with gil? or > django bug. is this coded in modpython and to many instances? i need > to select web teknology en maybe python en zope is too old to handle > high volume of download objs. what cas problem? thks for your help. not sure what you're really saying here, but feeding downloads through mod_python is not a very efficient thing to do (no matter what frame- work you're using). the following page contains some more info: http://www.jacobian.org/2005/dec/12/django-performance-tips/ (alse see the comments) -- http://mail.python.org/mailman/listinfo/python-list
Re: Scatter/gather on sockets?
On 1 Apr 2006 14:56:02 -0500, Roy Smith <[EMAIL PROTECTED]> wrote:
>I've got a bunch of strings in a list:
>
>vector = []
>vector.append ("foo")
>vector.append ("bar")
>vector.append ("baz")
>
>I want to send all of them out a socket in a single send() call, so
>they end up in a single packet (assuming the MTU is large enough). I
>can do:
>
>mySocket.send ("".join (vector))
>
>but that involves creating an intermediate string. Is there a more
>efficient way, that doesn't involve that extra data copy?
There is a thing called "scatter-gather I/O", but it has nothing to do with
lumping things together in a single packet. It's all about minimizing memory
copying on the way to the network. The underlying call is writev(), and it is
not exposed to Python applications in the standard library. There are,
however, several third-party modules which provide access to it (google for
"python writev" - you'll find plenty of material). You can also call it via
the dl module, and in Python 2.5, the ctypes module.
Twisted also exposes this functionality via ITransport.writeSequence (silently
falling back to writing "".join(iovec) if a more efficient scatter-gather
mechanism is not available (which it isn't in any of the official Twisted
reactors (but someday it will be and your program will magically go faster))).
Jean-Paul
--
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Re: Looking for a language/framework
Scott David Daniels schrieb: > Using a relational DBMS is most definitely _not_ premature optimization. > A relational system provides a way to store data so that it is later I did not mean that using a relational DBMS is premature optimization but not using a ORM because of performance considerations is one . If it turns out that the ORM is a performance problem you can always tune it afterwards. (probably by the DBMS setup, indexes etc.) > structure. The database structures built are as good a DB organization > as code generated by code generation programs: the meaning is obscured, > and the generated (structure / code) is hard to work with. Its just a layer and therefore the endresult is SQL much the same as the one you would hand code. (and you still can use direct SQL if you like with most of them) In any way you have to bridge the logical gap between the relational and the object data model in your programm. So you will end up in building a layer between your persistence code and your problem and domain specific application code, so what you are actually doing is writing an ORM. Not reinventing the wheel every time and using a existing one is IMHO a better approach. -- Mit freundlichen Grüßen, Ing. Gregor Horvath, Industrieberatung & Softwareentwicklung http://www.gregor-horvath.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Pickle or Mysql
> Can I use Pickle to store about 500,000 key value pairs.. or should I > use mySql. Which one is best for performance, as the key value pair > increases. Pickle: absolutely out of the question. Mysql: might work, albeit slowly. Use berkeley DB (bsddb3), or zodb. I have no experience with the latter, but bdb's scale far beyond that magnitude if necessary. -Mike -- http://mail.python.org/mailman/listinfo/python-list
Re: Should any() and all() take a key= argument?
Steven D'Aprano <[EMAIL PROTECTED]> writes: > >> any(map(lambda x: x==42, lst)) > ... > In any case, I question your assumption that the version using map must > automatically "waste memory". There's also always itertools.imap. > But then, unless these are big complex objects, why are we > micro-optimizing our code anyway? I'm running a Python process, and > it is consuming 6.7MB of memory at the moment. Do I really care about > saving 80 or 100 bytes?, or even 100 kilobytes? I don't think so. The idea is to write code to be assumption-free when possible. A general purpose library function should work efficiently on big complex objects even if some specific application might use it only for small objects. Similarly, application programs that will stay in use for a while should be written to be able to handle large workloads even if the initial requirements are small, unless significant extra development effort is needed. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 2.5 licensing: stop this change
Steve Holden wrote: > Grant Edwards wrote: > > On 2006-04-01, walterbyrd <[EMAIL PROTECTED]> wrote: > > > > > >>Is this an April fool's joke? > > > > > > Did you read the blog entry? > > > I suspect he didn't. I'm guessing that eventually we'll have to remove > the blog entry just so's nobobdy's tempted to take it seriously. If a big corporation wants to take it seriously and pay 1.25, what's wrong with that? :) > > regards > Steve > -- > Steve Holden +44 150 684 7255 +1 800 494 3119 > Holden Web LLC/Ltd www.holdenweb.com > Love me, love my blog holdenweb.blogspot.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Should any() and all() take a key= argument?
On Sat, 01 Apr 2006 08:12:25 -0300, Felipe Almeida Lessa wrote: > Em Sáb, 2006-04-01 às 20:44 +1000, Steven D'Aprano escreveu: >> Here's another way of doing it: >> >> lst = [2, 4, 42] >> any(map(lambda x: x==42, lst)) > > In fact, as we're talking about Python 2.5 anyway, it would be better > not to waste memory and use: > > any(x == 42 for x in lst) You might be talking about Python 2.5, but I certainly am not. any() and all() are easy to (almost) implement in earlier Python versions: try: any except NameError: # warning: this version will consume an iterator def any(seq): for s in seq: if s: return True return False and similarly for all(). In any case, I question your assumption that the version using map must automatically "waste memory". Iterators carry a certain amount of overhead which lists do not. For small enough lists, that overhead will be smaller than the extra memory used by the list. "Small enough" will depend on the type of objects involved: big complex objects created on the fly by the generator gives the generator the advantage, small simple objects like ints give the list the advantage. As Python doesn't give us any way to measure the memory used by an object, it is hard to say where that cut-off lies, but my wild guess is that for ints, it would probably be in the multiple tens. But then, unless these are big complex objects, why are we micro-optimizing our code anyway? I'm running a Python process, and it is consuming 6.7MB of memory at the moment. Do I really care about saving 80 or 100 bytes?, or even 100 kilobytes? I don't think so. -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 2.5 licensing: stop this change
Grant Edwards wrote: > On 2006-04-01, walterbyrd <[EMAIL PROTECTED]> wrote: > > >>Is this an April fool's joke? > > > Did you read the blog entry? > I suspect he didn't. I'm guessing that eventually we'll have to remove the blog entry just so's nobobdy's tempted to take it seriously. regards Steve -- Steve Holden +44 150 684 7255 +1 800 494 3119 Holden Web LLC/Ltd www.holdenweb.com Love me, love my blog holdenweb.blogspot.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 2.5 licensing: stop this change
Grant Edwards wrote: > On 2006-04-01, Steve Holden <[EMAIL PROTECTED]> wrote: > >>As the only director of the Python Software Foundation to vote against a >>recent Board motion to implement the change in licensing terms described in >> >> http://pyfound.blogspot.com/2006/04/python-25-licensing-change.html > > > Good one Steve. > > I particularly liked the Comments section. > > :) > Yes, lots of people joined in the spirit of the original post - the comments were added by others. Thanks for pointing them out: I hadn't noticed, having been out all day at a Make Beer Free rally. regards Steve -- Steve Holden +44 150 684 7255 +1 800 494 3119 Holden Web LLC/Ltd www.holdenweb.com Love me, love my blog holdenweb.blogspot.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Berkeley DB XML vs 4suite for fast searching in XML DB?
Last time I tried, BDB XML's Python extension crashed and I did not try too hard to figure out why and switched to something else that did not (eXist). BDB has been marketed for long as a fast database and will probably be faster than 4Suite. I doubt that you will find any benchmarks comparing those two. Why don't you try both yourself, with your own data and decide? -- http://mail.python.org/mailman/listinfo/python-list
Re: DO NOT USE JAVA BECAUSE IT IS NOT OPEN SOURCE
"steve" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > On Sat, 1 Apr 2006 13:06:52 +0800, Luc The Perverse wrote > (in article <[EMAIL PROTECTED]>): > >> <[EMAIL PROTECTED]> wrote in message >> news:[EMAIL PROTECTED] >>> Programing Languiges Are Ment to be free. That is why i am starting The >>> Coo De Tar thats french for Blow of state it is a flash/java >>> alternative and if you are going to use a server side languige use >>> Perl,Python or better yet Ruby. What is the point of a languige without >>> a standerd and without a open source distrabution. Coo De Tar will be >>> released as a api for perl,python and ruby. Java sucks because it IS >>> NOT FREE. I AM A GNU GUY I BELEVE THAT SOFTWARE MUST AND SHALL BE >>> FREE!! do not use java because it is an oxymoron >>> >> >> Dear Mr Troll, >> >> There are GNU implementations of JVM and compiler. >> >> And just because Sun's Java is not GNU does not mean it is not free. >> >> Now go get a life. >> >> -- >> LTP >> >> >> > > it's April 1st remember Ah! Thank you -- LTP :) -- http://mail.python.org/mailman/listinfo/python-list
Re: any() and all() on empty list?
Ron Adam wrote: > Steve R. Hastings wrote: >> This neatly replaces truecount(), and you can use it for other things as >> well. > > if True in talley(S): do_somthing() > > Works for me... ;-) > > > Cheers, > Ron Actulley talley isn't needed for this... if True in S: do_domething() That's what I get for staying up way too late last night. Cheers, Ron -- http://mail.python.org/mailman/listinfo/python-list
Re: any() and all() on empty list?
Steve R. Hastings wrote: > On Sat, 01 Apr 2006 14:35:58 -0300, Felipe Almeida Lessa wrote: >> Two changes: >> - Use "is None". >> - Use "try ... except" instead of "in" > > Yes. > > >> Maybe you don't like my version, and the gains aren't that much, but >> please use "is None" instead of "== None". > > Actually, I do like your version. And I try to always use "is None" > instead of "== None"; today I made a mistake about it. Thank you for your > comments. > > Ideally there should be an official tally() function in some module in > Python, and then we can just use it and not worry about how to write it. :-) And it's a good candidate to be written in C as well. Cheers, Ron -- http://mail.python.org/mailman/listinfo/python-list
Re: any() and all() on empty list?
Steve R. Hastings wrote:
> Here is a function called "tally()". It reduces a list to a dictionary
> of counts, with one key for each value from the list. The value for
> each key is the count of how many times it appeared in the list.
>
>
> def tally(seq, d=None):
> if d == None:
> d = {}
>
> for x in seq:
> if x in d:
> d[x] += 1
> else:
> d[x] = 1
> return d
>
>
> This neatly replaces truecount(), and you can use it for other things as
> well.
if True in talley(S): do_somthing()
Works for me... ;-)
Cheers,
Ron
--
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Re: running IDLE from another program?
Kent Johnson wrote: > John Salerno wrote: >> Kent Johnson wrote: >> >>> The working directory must be wrong. Try calling Python directly with >>> full paths: >>> >>> C:\Python24\pythonw C:\Python24\Lib\idlelib\idle.pyw -r C:\path\to\myprog.py >> >> Perfect! Thank you so much! >> >> I put this line in the command line field, and I left "working >> directory" empty because I'm not sure what goes there. Should it be the >> main python directory, or the directory of the file being run? Either >> way, it seems to work without a working directory. > > Great! I would set the working directory to the dir containing your > program. That way if you have multiple modules in the program you will > be able to import them without any trouble. > > Kent Ok, thanks again! I love how this works now! :) -- http://mail.python.org/mailman/listinfo/python-list
Re: Doc suggestions
Terry Reedy wrote: > Yes, there have been claims that doc patches have to be in Latex or are > otherwise not welcome. This is counter to my own experience and this page which says, "There's no need to worry about text markup; our documentation team will gladly take care of that." http://docs.python.org/about.html Submitting a proposed change or fix is easier and quicker than arguing about it on c.l.py and it seems to get pretty quickly to the actual document maintainers. Kent -- http://mail.python.org/mailman/listinfo/python-list
Re: any() and all() on empty list?
On Sat, 01 Apr 2006 14:35:58 -0300, Felipe Almeida Lessa wrote: > Two changes: > - Use "is None". > - Use "try ... except" instead of "in" Yes. > Maybe you don't like my version, and the gains aren't that much, but > please use "is None" instead of "== None". Actually, I do like your version. And I try to always use "is None" instead of "== None"; today I made a mistake about it. Thank you for your comments. Ideally there should be an official tally() function in some module in Python, and then we can just use it and not worry about how to write it. :-) -- Steve R. Hastings"Vita est" [EMAIL PROTECTED]http://www.blarg.net/~steveha -- http://mail.python.org/mailman/listinfo/python-list
Re: running IDLE from another program?
John Salerno wrote: > Kent Johnson wrote: > >>The working directory must be wrong. Try calling Python directly with >>full paths: >> >>C:\Python24\pythonw C:\Python24\Lib\idlelib\idle.pyw -r C:\path\to\myprog.py > > > Perfect! Thank you so much! > > I put this line in the command line field, and I left "working > directory" empty because I'm not sure what goes there. Should it be the > main python directory, or the directory of the file being run? Either > way, it seems to work without a working directory. Great! I would set the working directory to the dir containing your program. That way if you have multiple modules in the program you will be able to import them without any trouble. Kent -- http://mail.python.org/mailman/listinfo/python-list
Re: Identifying filled circles in a scanned image
"> Douglas Douglas <[EMAIL PROTECTED]> writes: > >> Hi everybody. >> >> I have a paper form that I scan into an image. My user fills some >> circles in >> this paper form using black ink. Every form has ten rows with five >> circles each >> and the user fills only one circle for each row. >> >> I was wondering if I could use the Python Imaging Library to process >> these >> forms. I know the Image class is really powerful, but I can't think of a >> way of >> how to locate wich circle was filled. I though about this problem once but never had occasion to do anything concrete. The key is to have some landmarks on the paper form that the analysis program can find. One can then convert between printed image coordinates and scanned image coordinates. This corrects for both variations in image placement on the sheet and sheet placement on the scanner. Terry Jan Reedy -- http://mail.python.org/mailman/listinfo/python-list
Re: Doc suggestions
<[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > "Terry Reedy" wrote: > Not sure how premature it is. I've been reading > c.l.p. on and off for nearly a year. Yes, there have been claims that doc patches have to be in Latex or are otherwise not welcome. But these mostly (all?) have lacked relevant concrete data, which would be actual responses to actual submissions to the Python SourceForge change trackers. There have also been fact-based postings at least partly refuting such claims, including some by me. >> > I gather corrections of factual >> > errors are welcome, but stylistic, or organizational >> > ones are not. I would not be surprised if the volunteer doc editors see corrections and the writing of missing docs as higher priority than sylistic upgrades, but that is different from 'not welcome'. Some time ago, Alex Martelli submitted several style change suggestions for at least one of the docs. As I remember, at least most of them were accepted. In any case, all were considered. And there have since been other changes that I have been involved with that were arguably style upgrades rather than corrections. A few organizational changes might be considered, especially if accompanied by an offer to make at least a prototype, but someone with fundamentally different ideas should write their own doc under their own name. >> If you wish to become a volunteer Python improver, let me know either >> here or privately and I will respond with a suggestion and an offer. > > Yes, please do. Frederik has one idea. Here is what I was going to say, and will anyway. Suggestion: You could submit the one improved sentence you previously suggested. But the overhead of any change is a bit high for just that. So gather at least a few suggestions, put them in order, include section number and identifier for each, and cut-and-paste urls from current docs at python.org. Offer: If you submit your 'text patch' to SourceForge and let me know, I will review it right away. If you prefer, post or email to me and I will 'pre' review it before submission. You can collect ideas from others if you want; I only care about formating that make the proposed change sites and contexts easy to find. Terry Jan Reedy -- http://mail.python.org/mailman/listinfo/python-list
Re: Scatter/gather on sockets?
Roy Smith <[EMAIL PROTECTED]> writes: > This is true, but I'm generating the message being sent in very small > chunks (often as small as 4 bytes at a time), and typically need to flush a > packet out onto the network after a few dozen bytes. Maybe at most a few > hundred. I don't know of any networks with MTU's smaller than that. > Measurements show a 10-fold improvement in protocol throughput with large > packets vs. small ones. The only question is what's the most efficient way > in Python to generate the large packets. Probably: build up the packet with cStringIO or with the array module instead of as a list of small strings. But if you time both versions I don't think it'll matter much. Python (at least CPython) simply will not be very fast no matter what you do. The overhead of building a large string (with ''.join, say) from a bunch of small ones isn't that big a deal compared with what you already lose in interpreter overhead running the application. -- http://mail.python.org/mailman/listinfo/python-list
Re: Scatter/gather on sockets?
In article <[EMAIL PROTECTED]>,
Anthony Greene <[EMAIL PROTECTED]> wrote:
> On Sat, 01 Apr 2006 14:56:02 -0500, Roy Smith wrote:
>
> > I've got a bunch of strings in a list:
> >
> > vector = []
> > vector.append ("foo")
> > vector.append ("bar")
> > vector.append ("baz")
> >
> > I want to send all of them out a socket in a single send() call, so
> > they end up in a single packet (assuming the MTU is large enough). I
> > can do:
> >
> > mySocket.send ("".join (vector))
> >
> > but that involves creating an intermediate string. Is there a more
> > efficient way, that doesn't involve that extra data copy?
>
> Is sendall() what you're looking for?
No. Sendall() is actually what I'm using now. It handles the other side
of the issue; issuing repeated send() calls if the system fragments your
buffer. I'm trying to aggregate lots of small buffers into one large one.
--
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Re: Scatter/gather on sockets?
Peter Hansen <[EMAIL PROTECTED]> wrote: > B. Don't bother trying, because even if the MTU is large enough there is > absolutely no guarantee that the packet will stay intact all the way > through the network anyway (even if you use sendall() instead of send()). This is true, but I'm generating the message being sent in very small chunks (often as small as 4 bytes at a time), and typically need to flush a packet out onto the network after a few dozen bytes. Maybe at most a few hundred. I don't know of any networks with MTU's smaller than that. Measurements show a 10-fold improvement in protocol throughput with large packets vs. small ones. The only question is what's the most efficient way in Python to generate the large packets. > So fixing your design not to require this appears to be the only viable > solution. My design is not broken. I'm writing code to drive a pre-existing binary communications protocol. It is what it is. The functionality I seek exists at the Unix system call level (writev, sendmsg), but doesn't appear to be exposed in the Python socket API. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 2.5 licensing: stop this change
Grant Edwards a écrit : > On 2006-04-01, Steve Holden <[EMAIL PROTECTED]> wrote: > >>As the only director of the Python Software Foundation to vote against a >>recent Board motion to implement the change in licensing terms described in >> >> http://pyfound.blogspot.com/2006/04/python-25-licensing-change.html > > > Good one Steve. > > I particularly liked the Comments section. > > :) > +42 And this pretty intersting link: http://www2.sqlonrails.org/ -- http://mail.python.org/mailman/listinfo/python-list
Re: running IDLE from another program?
Kent Johnson wrote: > The working directory must be wrong. Try calling Python directly with > full paths: > > C:\Python24\pythonw C:\Python24\Lib\idlelib\idle.pyw -r C:\path\to\myprog.py Perfect! Thank you so much! I put this line in the command line field, and I left "working directory" empty because I'm not sure what goes there. Should it be the main python directory, or the directory of the file being run? Either way, it seems to work without a working directory. Thanks again! -- http://mail.python.org/mailman/listinfo/python-list
Re: Connecting to gnuplot with Popen?
Anton81 <[EMAIL PROTECTED]> writes: > > Hi Anton, > > > > here is a little snippet using os.popen: > > Unfortunately I'm having more problem getting the output from Gnuplot, which > I'd like to examine for error messages and settings of options. If you must roll your own, look at standard module subprocess. John -- http://mail.python.org/mailman/listinfo/python-list
Re: Identifying filled circles in a scanned image
Douglas Douglas <[EMAIL PROTECTED]> writes: > Hi everybody. > > I have a paper form that I scan into an image. My user fills some circles in > this paper form using black ink. Every form has ten rows with five circles > each > and the user fills only one circle for each row. > > I was wondering if I could use the Python Imaging Library to process these > forms. I know the Image class is really powerful, but I can't think of a way > of > how to locate wich circle was filled. > > Could anybody please give me an advice on this? I think in astronomical / biological circles this kind or problem is known as "blob analysis", or something like that (certainly I remember the word "blob" correctly ;-). Try one of the numpy / numarray / Numerical Python / SciPy lists, bound to be people there who know a lot about this sort of problem, and your problem sounds quite a bit easier than the general one. John -- http://mail.python.org/mailman/listinfo/python-list
Re: running IDLE from another program?
John Salerno wrote: > Kent Johnson wrote: >>One thing that is really useful about running in an editor window is >>that (in TextPad, anyway) I can double-click on an error message and go >>directly to the line with the error. > > > Interesting. The way I have it now, it shows errors the way I want to, > but it shows them just in a text file, nothing special, and I don't seem > to be able to double-click them. Is this just a feature of TextPad, or > did you have to set it up so you can double-click the errors? mmm, both. TextPad lets me set a regular expression to interpret errors as file/line. When that is set correctly the double-clicking works. > >>Try >>C:\Python24\Lib\idlelib\idle -r C:\path\to\myprog.py > > > I tried this but it said it couldn't find idle.pyw (even though it is > there). The working directory must be wrong. Try calling Python directly with full paths: C:\Python24\pythonw C:\Python24\Lib\idlelib\idle.pyw -r C:\path\to\myprog.py Kent -- http://mail.python.org/mailman/listinfo/python-list
Re: Can I export my datas in pickle format safely ?
In <[EMAIL PROTECTED]>, DurumDara wrote: > I thinking about that I can use the pickle to serialize/load my datas > from the file. > > But: I remember that in the year of 2004(?) I tried this thing. I store > my CD informations in pickled objects (in files). > And when I changed my python version from ??? to 2.3(?), and I get some > error messages... What are the error messages? Pickled data should survive such a version change. Remember that even "text protocol" pickles are binary data which may break across platforms if the files are not opened in binary mode for writing and reading. And all classes of the types that were pickled must be "reachable" when unpickling. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list
Re: urllib2 through basic auth'ed proxy
[EMAIL PROTECTED] (John J. Lee) writes:
> Alejandro Dubrovsky <[EMAIL PROTECTED]> writes:
[...Alejandro complains about non-working HTTP proxy auth in urllib2...]
[...John notes urllib2 bug...]
> A workaround is to supply a stupid HTTPPasswordMgr that always returns
> the proxy credentials regardless of what the handler asks it for (only
> tested with a perhaps-broken 2.5 install, since I've broken my 2.4
> install):
[...snip ugly code]
> Yuck, yuck, yuck! I had realised the auth/proxies code in urllib2 was
> buggy, but... And all those hoops to jump through.
>
> Also, if you're using 2.5 SVN HEAD, it seems revision 42133 broke
> ProxyHandler in an attempt to fix the URL host:post syntax!
[...]
In fact the following also works with Python 2.3.4:
import urllib2
proxy_handler = urllib2.ProxyHandler({"http": "http://john:[EMAIL
PROTECTED]:3128"})
print urllib2.build_opener(proxy_handler).open('http://python.org/').read()
...but only just barely skirts around the bugs!-) :-(
(at least, the current bugs: I've no reason to work out what things
were like back in 2.3.4, but the above certainly works with that
version)
John
--
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Python-implimenting-valueweb
Hi All, I hope this post is acceptable on this list. I'm wondering if anyone here has experience using python on a web server? Specifically, has anyone used python on value web's servers? If anyone has any info, general or specific, please let me know. All help is appreciated. Sincerely, Brandon mcginty -- Feel free to contact me for technical support, or just to chat; I always have time to talk and help, and an open ear. Email:[EMAIL PROTECTED] Skype:brandon.mcginty Msn:[EMAIL PROTECTED] Aim:brandonmcginty (Not currently available.) Cell:4802025790 (Weekends and nights only, please.) "Kindness is a language that the deaf can hear and the blind can see." Mark Twain -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.385 / Virus Database: 268.3.4/299 - Release Date: 3/31/2006 -- http://mail.python.org/mailman/listinfo/python-list
Berkeley DB XML vs 4suite for fast searching in XML DB?
Storing XML in relational database with indexing feature is exactly what I need. But 4suite is mentioned from time to time and seemingly holding better support for python. I have no idea if 4 suite has provide strong support for random access or relatively random access for XML database and with indexing features, to support fast search. Who could compare the efficiency different between the two? -- http://mail.python.org/mailman/listinfo/python-list
Re: Scatter/gather on sockets?
On Sat, 01 Apr 2006 14:56:02 -0500, Roy Smith wrote:
> I've got a bunch of strings in a list:
>
> vector = []
> vector.append ("foo")
> vector.append ("bar")
> vector.append ("baz")
>
> I want to send all of them out a socket in a single send() call, so
> they end up in a single packet (assuming the MTU is large enough). I
> can do:
>
> mySocket.send ("".join (vector))
>
> but that involves creating an intermediate string. Is there a more
> efficient way, that doesn't involve that extra data copy?
Is sendall() what you're looking for?
--
A wise man knows he knows nothing.
--
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Re: running IDLE from another program?
Kent Johnson wrote: > I'm not sure what you mean by a 'debug' type environment. If you mean, > you want to run the program in a debugger and step through it, then this > approach won't work. If you just mean that you want to see the output of > the program, it will work. No, just an environment like IDLE that shows errors instead of just killing the program. > OK, your program is reading from standard input and the environment set > up by UltraEdit doesn't support this. If you are trying to run > interactive programs this approach won't work. Oh, I see! I had the raw_input() in there so it would pause the DOS prompt for me, but after taking out that line, then it works how I want it to. > One thing that is really useful about running in an editor window is > that (in TextPad, anyway) I can double-click on an error message and go > directly to the line with the error. Interesting. The way I have it now, it shows errors the way I want to, but it shows them just in a text file, nothing special, and I don't seem to be able to double-click them. Is this just a feature of TextPad, or did you have to set it up so you can double-click the errors? > Anyway, it turns out IDLE has a command-line switch that lets you pass a > file to run. Try > C:\Python24\Lib\idlelib\idle -r C:\path\to\myprog.py I tried this but it said it couldn't find idle.pyw (even though it is there). -- http://mail.python.org/mailman/listinfo/python-list
Re: Scatter/gather on sockets?
Roy Smith wrote:
> I've got a bunch of strings in a list:
>
> vector = []
> vector.append ("foo")
> vector.append ("bar")
> vector.append ("baz")
>
> I want to send all of them out a socket in a single send() call, so
> they end up in a single packet (assuming the MTU is large enough). I
> can do:
>
> mySocket.send ("".join (vector))
>
> but that involves creating an intermediate string. Is there a more
> efficient way, that doesn't involve that extra data copy?
Two possible answers that I can see:
A. No, the send call is implemented in C and requires a single buffer
with the entire piece of data that will be sent. Ultimately this gets
passed down to the NIC hardware in some fashion, so there's certainly no
hope of using something like a generator to send it in pieces.
B. Don't bother trying, because even if the MTU is large enough there is
absolutely no guarantee that the packet will stay intact all the way
through the network anyway (even if you use sendall() instead of send()).
So fixing your design not to require this appears to be the only viable
solution.
-Peter
--
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Re: wx.checklistbox
Thank Fredrik I try and then i will inform you Luca -- http://mail.python.org/mailman/listinfo/python-list
Scatter/gather on sockets?
I've got a bunch of strings in a list:
vector = []
vector.append ("foo")
vector.append ("bar")
vector.append ("baz")
I want to send all of them out a socket in a single send() call, so
they end up in a single packet (assuming the MTU is large enough). I
can do:
mySocket.send ("".join (vector))
but that involves creating an intermediate string. Is there a more
efficient way, that doesn't involve that extra data copy?
--
http://mail.python.org/mailman/listinfo/python-list
Re: DO NOT USE JAVA BECAUSE IT IS NOT OPEN SOURCE
Jack Diederich wrote: > Xah, is that you? Nope, can't be. Xah doesn't use caps like that, and Xah also is very big Free Software not Open Source... Xah also tends to communicate in a slightly more intelligent fashion. (note: do not take this as a defense of Xah) - Michael -- mouse, n: a device for pointing at the xterm in which you want to type. -- Fortune Visit me on the Web: http://www.elehack.net -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 2.5 licensing: stop this change
On 2006-04-01, walterbyrd <[EMAIL PROTECTED]> wrote: > Is this an April fool's joke? Did you read the blog entry? -- Grant Edwards grante Yow! I will invent "TIDY at BOWL"... visi.com -- http://mail.python.org/mailman/listinfo/python-list
Site err? - modpython - django?
Hi i am gettng slow response from thssite en wonder if problem with gil? or django bug. is this coded in modpython and to many instances? i need to select web teknology en maybe python en zope is too old to handle high volume of download objs. what cas problem? thks for your help. http://www2.sqlonrails.org/ -- http://mail.python.org/mailman/listinfo/python-list
wxpython in action book
any recommendations? any opinions? I want to learn to program in python and need a gui reference. I'll be updating various mysql tables. I have most of the code ready to roll by using a command line. I need put some lipstick on my project. pyQT seems viable but there is not really a good reference and tutorial so now I'm considering wxPython and saw this book and I'm wanting to know if if's even worth spending my $40 on. Thanks. -- http://mail.python.org/mailman/listinfo/python-list
Re: DO NOT USE JAVA BECAUSE IT IS NOT OPEN SOURCE
Xah, is that you? -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 2.5 licensing: stop this change
Is this an April fool's joke? Please post a link to the original article. Not just a post to a blog. -- http://mail.python.org/mailman/listinfo/python-list
Re: PIL ImageDraw line not long enough
"Fredrik Lundh" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > Bob Greschke wrote: > >> I have to extend the vertical line to y+8, instead of y+7 to get the line >> segment to be drawn long enough. This is on Linux, Solaris, 2.x versions >> of >> Python, 1.1.5 version of PIL, and on Windows with the latest of >> everything. >> Am I missing a setting somewhere? > > I recently got another bug reported that talked about the same thing, so > it's probably a bug in 1.1.5 that nobody has noticed before. > > (as nikie mentions, the low-level line segment drawer avoids drawing over- > lapping points, but the "line" wrapper should add the last pixel) > > Hey! It's not ME for once. :) It seems to only happen with lines that have a vertical-ness to them (straight up-down or diagonal). It doesn't seem to happen when the line segment is just horizontal. These are the characters that I am drawing www.greschke.com/unlinked/images/graphs.png It works really well. Thanks! Bob -- http://mail.python.org/mailman/listinfo/python-list
Application Generators
I would like to put together a very simple inventory program. When I ship an item, and edit the quantity; I would like the quantity _on_hand to auto-decrement, and the quantity_to_reorder to auto-increment. Also, when the data is displayed in a table format, I would like to be able to edit the quantity field as I would in a spreadsheet, just edit that field, without having to change to an edit-record screen. I thought the easiest way to do this would be to use a PHP code generator. But I'm not having any luck. Maybe I give up and code by hand? Or maybe I should use django? It seems that application generators never do exactly what you want, and even if they do, what about future development? I am looking for something that will make it easy to put together this simple project, and be flexible enough that I can easily modify the project. This application is supposed to run on hosted server, so that is also a concern. The present host doesn't even have python, but I could move the site to a new host, which has cgi python. I have an open mind. If anybody can suggest anything, I will take a look. Application generators that I have tried: dbQwikSite: I found it difficult to get it to work, and very slow. I had to uninstall Xampp, and install AppServ just to get it to work at all. I don't know why, maybe Xampp's versions of php/mysql were too new? I still can not get it to generate php code that I can use. AppGini: works as advertised, easy to use, inexpensive, and fast. But, frankly, it doesn't do much. As far as I could see, it doesn't even offer the basic security of a login. It just displays data, and allows you to add/delete records. I don't even think you can interactively edit records. Not much reporting capability. PHP-Runner: the best so far. Fast, easy, nice looking display, has basic security, allows editing records. Still does not seem to have the basic functionallity I'm looking for. Other app generators that I have looked at, but not tried: PHP-Peanuts PHPMaker phpmysql DaDaBik WizzyWeb Navicat Again, glad to read any opinions. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 2.5 licensing: stop this change
> > >Hmmm... after due consideration (and reading the announcmement >properly), I support this license change in full. > > > If I could read past the first paragraph do you think I would really hang onto this newsgroup asking stupid questions?! The personal harm caused readers of this announcement should entitle each reader to a free beer (or for those with bad hearts, a nitroglycerin pill) at the expense of the perpetrator - though I imagine the PSF team of lawyers retained for license enforcement may take up the case on his side - money talks. - As an aside, I should mention that I have countered the announced licensing change with a patent application for the use of 3, 4, or 5 spaces as an indent for purposes of establishing a code block. I have written a tidy little program that will count indent spaces in all Python programs and expect to negotiate royalty settlements on a per space basis ($.0001 per space proposed). Anyone who prefers to avoid a call from my legal team can simply send me their source code for royalty calculation, and provide a credit card or bank account number. Thanks. EP -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 2.5 licensing: stop this change
Fuzzyman wrote: > From the site: "Advanced Program for Research In Licensing, whose First Object-Oriented License" string = "Advanced Program for Research In Licensing, whose First Object-Oriented License" for letter in string: if ord(letter) in range(65,91): print(letter), -- mph -- http://mail.python.org/mailman/listinfo/python-list
Re: Looking for a language/framework
Gregor Horvath wrote: >> But what you overlook is SQL's strength: >> >> SQL can be translated into _very_ efficient query plans w/o changing >> the SQL. SQL's query optimizers (more properly, de-pessimizers) give > > Premature optimization is the root of all evil. > > On the top level of an appliciation the goal is to only have problem or > domain specific code. > Middelware or ORM is a way to this goal because it encapsulates and > hides the technical details of persistence and helps for cleaner code. > Using a relational DBMS is most definitely _not_ premature optimization. A relational system provides a way to store data so that it is later possible to go back into your DBMS setup and improve the performance of your program _without_changing_the_program's_code_. The ORM structure prevents this ability by abstracting away the meaningful structure. The database structures built are as good a DB organization as code generated by code generation programs: the meaning is obscured, and the generated (structure / code) is hard to work with. --Scott David Daniels [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
Re: New Python Logo Revealed
Giovanni Bajo wrote: > robin wrote: > > > http://diagrammes-modernes.blogspot.com > > Tell me tell me it's an april's joke, please? :) Well, I thought that the Python mimetype icon from the Crystal SVG icon set always looked pretty good - it employs a recognisable snake image, although no batteries are included. Paul P.S. A search for source_py.svgz gave the following URL, for those unfamiliar with the icon concerned: http://suse.osuosl.org/people/wimer/already_checked_into_kde/crsc-mime-source_py.svgz -- http://mail.python.org/mailman/listinfo/python-list
Re: Doc suggestions (was: Why "class exceptions" are not deprecated?)
"Fredrik Lundh" wrote: > > > I'm not much of an expert in anything yet, but I had an idea, and then > > managed to put the documents in a wiki, which was at least trying to > > do something. Fredrik beat me to it and did a much better job, but > > even so I feel quite proud that I did something and tried to move > > things on, rather than just post to a mailing list and hope someone > > else does it. > > and for the record: the infogami setup had never happened if Ed hadn't > written that post. I wouldn't rest on my laurels quite yet if I were you. You've provided a good piece to take care of the input collection side of the equasion but I've seen nothing that deals with the output side (wiki -> docs). Are the same people who don't have time to deal with doc patches going to be sifting though the wiki entries, editing for consistent style, etc, and updating the docs? Without that we have just YAW (yet another wiki). I notice that Postgresql has user-annotated pages. They dump the added comments with each new doc point release becauase it is too much work to merge them into the docs. > (sure, the wiki idea isn't new, and I've been investigating edit-through- > the-web solutions a lot lately in response to the python.org fiasco, but > there's a lot of stop energy in the python universe these days. python > needs more "let's try it; it may work" and less "let's set up a committee > and thoroughly investigate all possible technical solutions before anyone > is allowed to do anything"...) The two approaches are often not mutually exclusive. -- http://mail.python.org/mailman/listinfo/python-list
datetime, tzinfo ... strange conversion?
Hi!
I'm surprised about the following code, maybe you can give me a hint whether
that's bug or feature? I'm just trying to convert local time to GMT and one
method gives a strange result:
##
> #! /usr/bin/env python
>
> import datetime, pytz
>
> _tz_utc = pytz.timezone("UTC")
> _tz_germany = pytz.timezone("Europe/Berlin")
>
> local = datetime.datetime.now(_tz_germany)
> print "Local: ", local
>
> gmt = local.astimezone(_tz_utc)
> print "GMT (1)", gmt
>
> gmt = datetime.datetime.combine(local.date(),
local.timetz()).astimezone(_tz_utc)
> print "GMT (2)", gmt
>
> gmt = datetime.datetime.combine(datetime.date.today(),
datetime.time(local.hour, local.minute, local.second, local.microsecond,
_tz_germany)).astimezone(_tz_utc)
> print "GMT (3)", gmt
>
> gmt = datetime.datetime.combine(datetime.date.today(),
datetime.time(local.hour, local.minute, local.second, local.microsecond,
local.tzinfo)).astimezone(_tz_utc)
> print "GMT (4)", gmt
>
> print "_tz_germany:", _tz_germany, "(id: %s)" % id(_tz_germany), ",
local.tzinfo:", local.tzinfo, "(id: %s)" % id(local.tzinfo)
##
Result:
> [EMAIL PROTECTED]:~/is.work/Scripts$ ./timeconv.py
> Local: 2006-04-01 20:09:26.469445+02:00
> GMT (1) 2006-04-01 18:09:26.469445+00:00
> GMT (2) 2006-04-01 18:09:26.469445+00:00
> GMT (3) 2006-04-01 19:09:26.469445+00:00
> GMT (4) 2006-04-01 18:09:26.469445+00:00
> _tz_germany: Europe/Berlin (id: -1212869684) , local.tzinfo: Europe/Berlin
(id: -1212868756)
--> Why is GMT (3) wrong?
Cheers,
Tino
--
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trouble with mxODBC, unixODBC and MSSQL
I am using a script that's worked for me in the past on Windows, but
now that i've moved it to a Linux machine it is not. The trouble seems
to be when trying to insert escaped characters into a varchar field
(\n \r ,etc.).
-
# conn = mx.ODBC.WINDOWS.DriverConnect('DSN=myDSN;UID=sa;PWD=pwd')
conn = mx.ODBC.unixODBC.DriverConnect('DSN=myDSN;UID=sa;PWD=pwd')
curr = conn.cursor()
# These strings do not work:
# mystring = "Some text \n and some other text"
# mystring = "Some text \t and some other text"
# mystring = """Some text
and some other text"""
# This tring works just fine:
mystring = "Some text and some other text"
sql_insert = "insert into DEV..msg(message_id,body) values(?,?)"
curr.execute(sql_insert, (1,mystring))
curr.close()
conn.commit()
-
Here's the error message:
Error Type: OperationalError
Error Value: ('', 8179, '[unixODBC][FreeTDS][SQL Server]Could not find
prepared statement with handle 0.', 6083)
Any ideas greatly appreciated.
--
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Re: newbie string conversion question
Rohit wrote:
> As part of a proprietary socket based protocol I have to convert a
> string of length 10,
>
> say, "1234567890"
>
> to send it as 5 characters such that their hex values are
>
> 0x21 0x43 0x65 0x87 0x09
>
> (Hex value of each character is got by transposing two digits at a
> time)
>
> How can I do this in python? I would like the result to be available
> as a string since I am concatenating it to another string before
> sending it out.
>
> Thanks,
> Rohit
>
For a horrendously obscure version, try:
def mangle(digits):
length = (len(digits) + 1) >> 1
v = int(digits, 16)
mask = int('0F' * length, 16)
smunch = (v ^ (v >> 4)) & mask
swapped = v ^ (smunch | (smunch << 4))
return ''.join(chr(255 & (swapped >> (8 * n)))
for n in reversed(range(length)))
--Scott David Daniels
[EMAIL PROTECTED]
--
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Re: New Python Logo Revealed
robin wrote: > I have an entry on my blog discussing the new Python logo, which is > apparently due to replace the current one within the month. I'd be > interested in what people think of it. > > Surf: > http://diagrammes-modernes.blogspot.com Tell me tell me it's an april's joke, please? :) -- Giovanni Bajo -- http://mail.python.org/mailman/listinfo/python-list
Re: any() and all() on empty list?
Em Sáb, 2006-04-01 às 08:35 -0800, Steve R. Hastings escreveu:
> def tally(seq, d=None):
> if d == None:
> d = {}
>
> for x in seq:
> if x in d:
> d[x] += 1
> else:
> d[x] = 1
> return d
Two changes:
- Use "is None".
- Use "try ... except" instead of "in"
def tally2(seq, d=None):
if d is None:
d = {}
for x in seq:
try:
d[x] += 1
except KeyError:
d[x] = 1
return d
It's also faster:
>>> from random import choice
>>> a = []
>>> for i in xrange(10):
... a.append(choice([False, True]))
...
>>> tally(a)
{False: 49922, True: 50078}
>>> tally2(a)
{False: 49922, True: 50078}
>>> from timeit import Timer
>>> min(Timer(stmt='b=tally(a)', setup='from __main__ import a,
tally').repeat(3, 100))
4.2756481170654297
>>> min(Timer(stmt='b=tally2(a)', setup='from __main__ import a,
tally2').repeat(3, 100))
3.812028169631958
Maybe you don't like my version, and the gains aren't that much, but
please use "is None" instead of "== None".
Cheers,
--
Felipe.
--
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Re: wx.checklistbox
"luca72" wrote:
> i have again one simple problem:
> the script is this:
>
> def output(self):
> global lista2
> lista2 = open('/lista2', 'w')
> iteminlista2 = self.checkListBox2.GetStrings()
> lista2.writelines(iteminlista2)
>
> def input1(self):
> lista2leggi = open('/lista2', 'r')
> cd = lista2leggi.readlines()
> self.checkListBox2.AppendItems(cd)
>
> The write file is like:
>
> item1item2item3
writelines doesn't add newlines; you have to do that yourself. try
using a plain loop instead:
for item in iteminlista2:
lista2.write(item + "\n")
--
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Re: Exception handling....dumb question?
kbperry wrote: > I have a Python book, but it didn't mention this at all. I also tried > looking through the online docs to no avail. This is covered by the tutorial though, and if you're a Python rookie it would be a good idea to step your way through most of it soon: See http://docs.python.org/tut/node10.html for the section on exception handling. -Peter -- http://mail.python.org/mailman/listinfo/python-list
New Python Logo Revealed
I have an entry on my blog discussing the new Python logo, which is apparently due to replace the current one within the month. I'd be interested in what people think of it. Surf: http://diagrammes-modernes.blogspot.com - robin noisetheatre.blogspot.com -- http://mail.python.org/mailman/listinfo/python-list
Re: smtplib "authentication required" error
Dear tjg: That was extremely helpful. Thank you very kindly. The server did not respond to the .starttls() method but authentication was successful after, it seems, the .ehlo() was specified. I have tried the script without the first s.ehlo() and without s.starttls() and it works perfectly. My authentication problems seem to have been that the server uses EHLO, which must be specified! Thank you very kindly. -- http://mail.python.org/mailman/listinfo/python-list
Re: any() and all() on empty list?
On Sat, 01 Apr 2006 00:38:08 -0800, Steve R. Hastings wrote:
> my proposed truecount() returns a tuple, with the length and
> the count of true values.
I never liked the name truecount(), and the more I think about it, the
less I like the function. It should either solve a very important need,
or else it should be general enough to solve multiple needs; truecount()
doesn't really do either.
I kept thinking about this, and then suddenly I remembered an idea I read
about before. I'm not sure who invented this idea, but it wasn't me.
Here is a function called "tally()". It reduces a list to a dictionary
of counts, with one key for each value from the list. The value for
each key is the count of how many times it appeared in the list.
def tally(seq, d=None):
if d == None:
d = {}
for x in seq:
if x in d:
d[x] += 1
else:
d[x] = 1
return d
This neatly replaces truecount(), and you can use it for other things as
well.
Let's revisit my example from before:
> Suppose you wanted, for some reason, to know how many lines in a file
> start with a vowel:
vowels = frozenset("aeiouAEIOU")
f = open("a_file.txt") # note that f is an iterator
counts = tally(line[0] in vowels for line in f)
# counts is a dict; counts.keys() == [False, True]
count_nonvowels, count_vowels = counts.values()
total = count_nonvowels + count_vowels
print "%d lines in file; %d start with a vowel" % (total, count_vowels)
--
Steve R. Hastings"Vita est"
[EMAIL PROTECTED]http://www.blarg.net/~steveha
--
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Re: wx.checklistbox
Hi,
I do not see where you close the file: I beleve you need to close it to
flush information prior to reading again.
Philippe
luca72 wrote:
> i have again one simple problem:
> the script is this:
>
> def output(self):
> global lista2
> lista2 = open('/lista2', 'w')
> iteminlista2 = self.checkListBox2.GetStrings()
> lista2.writelines(iteminlista2)
>
> def input1(self):
> lista2leggi = open('/lista2', 'r')
> cd = lista2leggi.readlines()
> self.checkListBox2.AppendItems(cd)
>
>
>
> The write file is like:
>
> item1item2item3
>
> when i read the and i put the item in the checklistbox , i don't find :
>
> item1
> item2
> item3
>
> but :
>
> item1item2item3
>
> How to do for have it like :
>
> item1
> item2
> item3
>
> Regards
>
> Luca
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Re: Logging and threading
As simple and as obvious as I expected, thanks Dennis. -Alex -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 2.5 licensing: stop this change
That isn't in the published 2.5 License. http://docs.python.org/dev/ref/node110.html Thanks for the scare.. ~r -- http://mail.python.org/mailman/listinfo/python-list
Re: newbie string conversion question
Felipe Almeida Lessa wrote: a = "1234567890" b = [] for i in range(len(a)/2): > ... b.append(chr(int(a[i*2:i*2+2][::-1], 16))) > ... b = ''.join(b) print b > !Ce� print repr(b) > '!Ce\x87\t' Alternatively: >>> s = "1234567890" >>> ''.join(chr(int(b+a,16)) for a,b in zip(s[::2],s[1::2])) '!Ce\x87\t' -- http://mail.python.org/mailman/listinfo/python-list
Re: python tutorial: popular/informative Python sites ?
Fredrik Lundh wrote: > the "what now?" page in the tutorial > > to replace it with something else, what should that be? what sites > do pythoneers and pythonistas visit these days? > > post your suggestions in this thread or on this page: > Pilgrims tricks/ips http://diveintopython.org/appendix/tips.html online cookbook http://aspn.activestate.com/ASPN/Cookbook/Python soem quick refs http://www.onlamp.com/pub/a/python/excerpt/PythonPocketRef/index.html http://rgruet.free.fr/PQR24/PQR2.4.html tutorials http://www.awaretek.com/tutorials.html -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 2.5 licensing: stop this change
In article <[EMAIL PROTECTED]>, Steve Holden <[EMAIL PROTECTED]> wrote: > As the only director of the Python Software Foundation to vote against a > recent Board motion to implement the change in licensing terms described in > >http://pyfound.blogspot.com/2006/04/python-25-licensing-change.html > > I would like to place on record my protest against this change. I think > it will harm the Python language and ultimately be counter-productive, > reducing the user base and discouraging open source programmers from > contributing to the code base. > > If you disagree with this proposed change it's not too late to do > something about it. If this change goes ahead it will be the end of > Python as we know it. > > regards > Steve Absolutely agree. This is a disaster. Specifying the use of $US will shut out our friends who use quatloos or gold pressed latinum for currency. Bad idea. -- http://mail.python.org/mailman/listinfo/python-list
ANN: PyGUI 1.7
PyGUI 1.7 is now available: http://www.cosc.canterbury.ac.nz/~greg/python_gui/ New features: * GL.DisplayList class for managing OpenGL display lists in a similar way to the GL.Texture class introduced in 1.6. * Facilites for displaying a chosen cursor when the mouse is over a View. * Facilities for locating resources associated with an application. Bug fixes: * Cocoa: Getting the extent property of a ScrollableView did not work. * Cocoa: Worked around a PyObjC bug that was causing Tasks to leak memory. * Cocoa: Request New File dialog with a file type having a Macintosh type code did not work. Plus a number of other modifications, see CHANGES.txt in the distribution for details. What is PyGUI? -- PyGUI is an experimental highly-Pythonic cross-platform GUI API. Implementations are currently available for MacOSX and Gtk. For a full description of the project goals, see the PyGUI web page at the above address. -- http://mail.python.org/mailman/listinfo/python-list
Re: newbie string conversion question
Em Sáb, 2006-04-01 às 06:17 -0800, Rohit escreveu: > As part of a proprietary socket based protocol I have to convert a > string of length 10, > > say, "1234567890" > > to send it as 5 characters such that their hex values are > > 0x21 0x43 0x65 0x87 0x09 > > (Hex value of each character is got by transposing two digits at a > time) > > How can I do this in python? I would like the result to be available > as a string since I am concatenating it to another string before > sending it out. You mean: >>> a = "1234567890" >>> b = [] >>> for i in range(len(a)/2): ... b.append(chr(int(a[i*2:i*2+2][::-1], 16))) ... >>> b = ''.join(b) >>> print b !Ce� >>> print repr(b) '!Ce\x87\t' >>> print [ord(x).__hex__() for x in b] ['0x21', '0x43', '0x65', '0x87', '0x9'] ?? But I'm not sure if this is the best solution... > Thanks, > Rohit HTH, -- Felipe. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 2.5 licensing: stop this change
On 2006-04-01, Piet van Oostrum <[EMAIL PROTECTED]> wrote: >> "Fuzzyman" <[EMAIL PROTECTED]> (F) wrote: > >>F> Can I ask for clarification. The charge applies to any commercial use >>F> of a derivative work based on the Python source code ? > >>F> Normal applications that use Python, including bunding the standard >>F> CPython as an executable, using tools like py2exe, won't be covered. >>F> Right ? > > As I understand it, distributing Python is also covered. For a commercial > vendor $1.25 is peanuts, but for the PSA it is a significant amount (think > about all the Mac OSX copies if Apple decides to switch to 2.5). I just found last night that my spankin' new Thinkpad came with Python 2.2 pre-installed underneath an "IBMTOOLS" directory on the C: drive. Don't let Lenovo slide by without paying... -- Grant Edwards grante Yow! I'll take ROAST BEEF at if you're out of LAMB!! visi.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 2.5 licensing: stop this change
On 2006-04-01, Steve Holden <[EMAIL PROTECTED]> wrote: > As the only director of the Python Software Foundation to vote against a > recent Board motion to implement the change in licensing terms described in > >http://pyfound.blogspot.com/2006/04/python-25-licensing-change.html Good one Steve. I particularly liked the Comments section. :) -- Grant Edwards grante Yow! I represent a at sardine!! visi.com -- http://mail.python.org/mailman/listinfo/python-list
newbie string conversion question
As part of a proprietary socket based protocol I have to convert a string of length 10, say, "1234567890" to send it as 5 characters such that their hex values are 0x21 0x43 0x65 0x87 0x09 (Hex value of each character is got by transposing two digits at a time) How can I do this in python? I would like the result to be available as a string since I am concatenating it to another string before sending it out. Thanks, Rohit -- http://mail.python.org/mailman/listinfo/python-list
Re: String pattern matching
Firstly sort variable expressions by its length xy = 'abca' xyz = 'abcaaab' vxw = 'eeabcac' Expand all expressions by its values except itself xy = 'abca' 'abca' z = 'abcaaab' vxw = 'eeabcac' Cut all left and right matches xy = 'abca' z = 'aab' vxw = 'eeabcac' Repeat until you can. z = 'aab' xy = 'abca' vxw = 'eeabcac' Get first variable expression intersection - variables: x is longest intersection of xy and vxw - value: 'abca' starting at position 2 of vxw (longest intersection of 'abca' and 'eeabcac') 'a' starting at position 5 of vxw Then try matching: x='abca' (at position 2 of vxw) x='abc' (at position 2 of vxw) x='ab' (at position 2 of vxw) x='a'(at position 2 of vxw) x='a'(at position 5 of vxw) x='' (at position arbitrary position of vxw) and calculate the others. Repeat all step until you can. In your example, there are 13 results. x='abca' y='' z='aab' v='ee' w='c' x='abc' y='a'z='aab' v='ee' w='ac' x='ab' y='ca' z='aab' v='ee' w='cac' x='a'y='bca' z='aab' v='ee' w='bcac' x='a'y='bca' z='aab' v='eeabc' w='c' x='' y='abca' z='aab' v=''w='' x='' y='abca' z='aab' v='e' w='eabcac' x='' y='abca' z='aab' v='ee' w='abcac' x='' y='abca' z='aab' v='eea' w='bcac' x='' y='abca' z='aab' v='eeab'w='cac' x='' y='abca' z='aab' v='eeabc' w='ac' x='' y='abca' z='aab' v='eeabca' w='c' x='' y='abca' z='aab' v='eeabcac' w='' with the same original expressions xy = 'abca' xyz = 'abcaaab' vxw = 'eeabcac' Note that maximum matching is best matching in some kind of problems. Cutting off empty values, you can get 4 results: x='abc' y='a'z='aab' v='ee' w='ac' x='ab' y='ca' z='aab' v='ee' w='cac' x='a'y='bca' z='aab' v='ee' w='bcac' x='a'y='bca' z='aab' v='eeabc' w='c' -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 2.5 licensing: stop this change
Look at the date. Worry about this if it is still around tomarrow -- http://mail.python.org/mailman/listinfo/python-list
Re: wx.checklistbox
i have again one simple problem:
the script is this:
def output(self):
global lista2
lista2 = open('/lista2', 'w')
iteminlista2 = self.checkListBox2.GetStrings()
lista2.writelines(iteminlista2)
def input1(self):
lista2leggi = open('/lista2', 'r')
cd = lista2leggi.readlines()
self.checkListBox2.AppendItems(cd)
The write file is like:
item1item2item3
when i read the and i put the item in the checklistbox , i don't find :
item1
item2
item3
but :
item1item2item3
How to do for have it like :
item1
item2
item3
Regards
Luca
--
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Re: Tkinter divider
That did the trick - thanks. -- http://mail.python.org/mailman/listinfo/python-list
Re: why doesn't is work?a script to backup a directory
i am very sorry . the erroer was from my Portable Hard Disk because its disk sign has changed from "o" to "h" ,from "p" to "i" i'm very sorry -- http://mail.python.org/mailman/listinfo/python-list
Re: why doesn't is work?a script to backup a directory
[EMAIL PROTECTED] wrote: > please don't read the prevous post ,please read this one: > > thank you for your suggestion and apologize for my mistake. > if i run it and answer the raw_input with "Enter" i get > > sth is wrong > press Return> > > i comment the try-except and run it and answer the raw_input with > "Enter" > and get message following: > > > Traceback (most recent call last): > File "G:\9\Eb\updateEbBb.py", line 41, in -toplevel- > updateNow(base) > File "G:\9\Eb\updateEbBb.py", line 28, in updateNow > update(d0) > File "G:\9\Eb\updateEbBb.py", line 16, in update > shutil.rmtree(i) > File "D:\Program Files\Python24\lib\shutil.py", line 155, in rmtree > onerror(os.listdir, path, sys.exc_info()) > File "D:\Program Files\Python24\lib\shutil.py", line 153, in rmtree > names = os.listdir(path) > WindowsError: [Errno 3] : 'O:/eb/mb/S/*.*' shutil.rmtree() expects a directory name, not a file pattern. if you leave out the "*.*" part at the end, it should do what you want. (assuming you want to remove the eb/mb/S directory, that is) -- http://mail.python.org/mailman/listinfo/python-list
Re: Tkinter divider
Jim Lewis wrote: > Anyone know how to create a draggable divider between two Tkinter > windows? http://effbot.org/tkinterbook/panedwindow.htm might be what you need. -- http://mail.python.org/mailman/listinfo/python-list
COM Server & wxPython
Hi all, i'm doing a COM server that have to expose some graphics (panels and configuration controls), that would be embedded in an application through OLE. I was wondering if I can do this using wxPython. Another question is if my COM server would inherits from one of the wxPython class. If it's true, from which? wx.App, wx.Frame, wx.Panel. The important thing is that i would to have the same effect that you have when you the calendar OLE control on a Delphi or VB form (you see the graphics ;) ) thanks, nelson -- http://mail.python.org/mailman/listinfo/python-list
Re: why doesn't is work?a script to backup a directory
please don't read the prevous post ,please read this one: thank you for your suggestion and apologize for my mistake. if i run it and answer the raw_input with "Enter" i get sth is wrong press Return> i comment the try-except and run it and answer the raw_input with "Enter" and get message following: Traceback (most recent call last): File "G:\9\Eb\updateEbBb.py", line 41, in -toplevel- updateNow(base) File "G:\9\Eb\updateEbBb.py", line 28, in updateNow update(d0) File "G:\9\Eb\updateEbBb.py", line 16, in update shutil.rmtree(i) File "D:\Program Files\Python24\lib\shutil.py", line 155, in rmtree onerror(os.listdir, path, sys.exc_info()) File "D:\Program Files\Python24\lib\shutil.py", line 153, in rmtree names = os.listdir(path) WindowsError: [Errno 3] : 'O:/eb/mb/S/*.*' -- http://mail.python.org/mailman/listinfo/python-list
Re: why doesn't is work?a script to backup a directory
thank you for your suggestion and apologize for my mistake. if i run it and answer the raw_input with "Enter" i get sth is wrong press Return> i comment the try-except and run it and answer the raw_input with "Enter" and get message following: Traceback (most recent call last): File "G:\9\Eb\updateEbBb.py", line 41, in -toplevel- updateNow(base) File "G:\9\Eb\updateEbBb.py", line 28, in updateNow update(d0) File "G:\9\Eb\updateEbBb.py", line 16, in update shutil.rmtree(i) File "D:\Program Files\Python24\lib\shutil.py", line 155, in rmtree onerror(os.listdir, path, sys.exc_info()) File "D:\Program Files\Python24\lib\shutil.py", line 153, in rmtree names = os.listdir(path) WindowsError: [Errno 3] : 'O:/eb/mb/SCIL/*.*' -- http://mail.python.org/mailman/listinfo/python-list
Tkinter divider
Anyone know how to create a draggable divider between two Tkinter windows? -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 2.5 licensing: stop this change
[EMAIL PROTECTED] wrote: > Aww, but I liked the idea of copying Perl 6 REs, and porting python to > the toy CPU :-) I think if PSF is going to support porting of Python to "toy" CPUs then the Digi-Comp should be the first target. This will breathe new life into these toys which for years have been relegated to the backs of closets and dusty attics. Having a modern programming language available will bring them out of the dark ages of counters and logic tables and make them useful for such purposes as web servers and biological research. And for the developers or others who need to target this platform, it is again in production. http://paperforest.blogspot.com/2006/02/digi-comp-1.html Kent -- http://mail.python.org/mailman/listinfo/python-list
Re: running IDLE from another program?
John Salerno wrote: > Kent Johnson wrote: > >>John Salerno wrote: >> >>>Kent Johnson wrote: >>> You probably don't need to do that. Just run the file in python directly. I don't know UE, but when you configure an external tool, tell it to run python.exe and pass the current file as a command line parameter. >>> >>>I've tried a lot of combinations for the command line to execute, but >>>nothing is working. What format should it be in? Should it look like this: >>> >>>C:\Python24\python.exe module ? >> >>C:\Python24\python.exe D:\full\path\to\myprogram.py >> >>There is a post on the UltraEdit forum from JohnJSal, is that not you? >>Whoever it is got this working... >>http://www.ultraedit.com/index.php?name=Forums&file=viewtopic&t=2732&highlight=python >> >>Kent > > > Yes, that's me. :) But all that that post accomplished was getting me to > run the file itself, as if I had double-clicked on it. This isn't what I > want. I want it to run in a 'debug' type of environment like IDLE so I > can see any error messages. I'm not sure what you mean by a 'debug' type environment. If you mean, you want to run the program in a debugger and step through it, then this approach won't work. If you just mean that you want to see the output of the program, it will work. > > I tried your suggestion and seems to half-way work. But it doesn't open > the program in a different environment (such as IDLE), it just opens the > output in a new text window in UE. Here's the output: > > ['qIQNlQSLi', 'eOEKiVEYj', 'aZADnMCZq', 'bZUTkLYNg', 'uCNDeHSBj', > 'kOIXdKBFh', 'dXJVlGZVm', 'gZAGiLQZx', 'vCJAsACFl', 'qKWGtIDCj'] > Traceback (most recent call last): >File "C:\Python24\myscripts\challenge\small_letter.py", line 15, in ? > raw_input() > EOFError: EOF when reading a line OK, your program is reading from standard input and the environment set up by UltraEdit doesn't support this. If you are trying to run interactive programs this approach won't work. > > > The list is the output from the script. I don't know why the end of file > error is raised though, because it wouldn't have been raised if I ran > the file in IDLE. So something still isn't quite right. Because IDLE does support input. I may have put too much interpretation on your original question because I have my editor (TextPad) configured to run the front window in Python and I find it a very productive way to work. But it's not IDLE and it doesn't allow interactive input. I rarely write a program that requires keyboard input so that's not a problem for me. One thing that is really useful about running in an editor window is that (in TextPad, anyway) I can double-click on an error message and go directly to the line with the error. Anyway, it turns out IDLE has a command-line switch that lets you pass a file to run. Try C:\Python24\Lib\idlelib\idle -r C:\path\to\myprog.py Kent -- http://mail.python.org/mailman/listinfo/python-list
Re: Doc suggestions (was: Why "class exceptions" are not deprecated?)
Ed Singleton wrote: > I'm not much of an expert in anything yet, but I had an idea, and then > managed to put the documents in a wiki, which was at least trying to > do something. Fredrik beat me to it and did a much better job, but > even so I feel quite proud that I did something and tried to move > things on, rather than just post to a mailing list and hope someone > else does it. and for the record: the infogami setup had never happened if Ed hadn't written that post. (sure, the wiki idea isn't new, and I've been investigating edit-through- the-web solutions a lot lately in response to the python.org fiasco, but there's a lot of stop energy in the python universe these days. python needs more "let's try it; it may work" and less "let's set up a committee and thoroughly investigate all possible technical solutions before anyone is allowed to do anything"...) -- http://mail.python.org/mailman/listinfo/python-list
python tutorial: popular/informative Python sites ?
the "what now?" page in the tutorial http://www.python.org/doc/tut/node14.html lists a couple of relevant web sites for Python users, including: http://www.python.org http://starship.python.net http://www.python.org/pypi the starship link has been there since 1998 or so (Python 1.5), but I don't think the starship is very active these days. but if we were to replace it with something else, what should that be? what sites do pythoneers and pythonistas visit these days? post your suggestions in this thread or on this page: http://pytut.infogami.com/node14.html thanks /F -- http://mail.python.org/mailman/listinfo/python-list
Re: Should any() and all() take a key= argument?
Em Sáb, 2006-04-01 às 20:44 +1000, Steven D'Aprano escreveu: > Here's another way of doing it: > > lst = [2, 4, 42] > any(map(lambda x: x==42, lst)) In fact, as we're talking about Python 2.5 anyway, it would be better not to waste memory and use: any(x == 42 for x in lst) -- Felipe. -- http://mail.python.org/mailman/listinfo/python-list
String pattern matching
Anyone have experience with string pattern matching? I need a fast way to match variables to strings. Example: string - variables abcaaab - xyz abca - xy eeabcac - vxw x matches abc y matches a z matches aab w maches ac v maches ee -- http://mail.python.org/mailman/listinfo/python-list
Re: packaging question - documentation
Sorry about not being clear. I have been downloading quite a few packages for examples, but have not found a good example of man page building from optparse. seismic-py - setup.py - seismic - __init.py__ - bulk of the code *.py - scripts - programs that go in bin/the users executable path (no .py extension) -- http://mail.python.org/mailman/listinfo/python-list
Re: Should any() and all() take a key= argument?
On Fri, 31 Mar 2006 22:35:10 -0800, Steve R. Hastings wrote: > The list.sort() method accepts a "key=" parameter to let you specify a > function that will change the way it sorts. In Python 2.5, min() and > max() now accept a "key=" parameter that changes how the functions decide > min or max. > > Should any() and all() take a key= argument? > > Example: > lst = [2, 4, 42] any(lst, key=lambda x: x == 42) > True In my opinion, that's an abuse of the term "key". Here's another way of doing it: lst = [2, 4, 42] any(map(lambda x: x==42, lst)) > I kind of like the key= option. The need isn't as strong as with > .sort(), min(), and max(), but consistency can be a good thing. I'd > personally like to see key= anywhere it makes sense. This isn't one of those places. -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
Re: why doesn't is work?a script to backup a directory
On Fri, 31 Mar 2006 18:37:11 -0800, obeeker wrote: > """there is threee directories,one of these is used for the base > directory,decided by the user, default is d0""" [snip code] It doesn't work? Have you tried running it to see what it does? When you do, please post a description of what it does, including any exception tracebacks, and just as importantly, what you expect it to do. -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
Re: DO NOT USE JAVA BECAUSE IT IS NOT OPEN SOURCE
On Sat, 1 Apr 2006 13:06:52 +0800, Luc The Perverse wrote (in article <[EMAIL PROTECTED]>): > <[EMAIL PROTECTED]> wrote in message > news:[EMAIL PROTECTED] >> Programing Languiges Are Ment to be free. That is why i am starting The >> Coo De Tar thats french for Blow of state it is a flash/java >> alternative and if you are going to use a server side languige use >> Perl,Python or better yet Ruby. What is the point of a languige without >> a standerd and without a open source distrabution. Coo De Tar will be >> released as a api for perl,python and ruby. Java sucks because it IS >> NOT FREE. I AM A GNU GUY I BELEVE THAT SOFTWARE MUST AND SHALL BE >> FREE!! do not use java because it is an oxymoron >> > > Dear Mr Troll, > > There are GNU implementations of JVM and compiler. > > And just because Sun's Java is not GNU does not mean it is not free. > > Now go get a life. > > -- > LTP > >>> > > it's April 1st remember -- NewsGuy.Com 30Gb $9.95 Carry Forward and On Demand Bandwidth -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 2.5 licensing: stop this change
Ivan Herman>I would certainly look at *all details* of the announcement,< Aww, but I liked the idea of copying Perl 6 REs, and porting python to the toy CPU :-) (But making strings mutable sounds too much strange). Bye and thank you, bearophile -- http://mail.python.org/mailman/listinfo/python-list
Re: a simple regex question
John Salerno schreef:
>> pattern = '([a-z][A-Z]{3}[a-z][A-Z]{3}[a-z])+'
>> print re.search(pattern, mess).groups()
>>
>> Anyway, this returns one matching string, but when I put this letter in
>> as the solution to the problem, I get a message saying "yes, but there
>> are more", so assuming this means that there is more than one character
>> with three caps on either side, is my RE written correctly to find them
>> all? I didn't have the parentheses or + sign at first, but I added them
>> to find all the possible matches, but still only one comes up.
>>
>> Thanks.
>
> A quick note: I found nine more matches by using findall() instead of
> search(), but I'm still curious how to write the RE so that it works
> with search, especially since findall wouldn't have returned overlapping
> matches. I guess I didn't write it to properly check multiple times.
It seems to me you should be able to find all matches with search(). Not
with the pattern you mention above: that will only find matches if they
come right after each other, as in
xXXXxXXXxyYYYyYYYyzZZZzZZZz
You'll need something more like
pattern = '([a-z][A-Z]{3}[a-z][A-Z]{3}[a-z]+)+'
so that it will find matches that are further apart from each other.
That said, I think findall() is a better solution for this problem. I
don't think search() will find overlapping matches either, so that's no
reason not to use findall(), and the pattern is simpler with findall();
I solved this challenge with findall() and this regular expression:
pattern = r'[a-z][A-Z]{3}[a-z][A-Z]{3}[a-z]'
--
If I have been able to see further, it was only because I stood
on the shoulders of giants. -- Isaac Newton
Roel Schroeven
--
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Re: Python 2.5 licensing: stop this change
I would certainly look at *all details* of the announcement, including the second line from the top which gives the date:-) Ivan Caleb Hattingh wrote: > WAIT- > > Did I just get caught by an April Fools Joke? > > I have a nasty feeling about this :)) > > C > -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 2.5 licensing: stop this change
> "Fuzzyman" <[EMAIL PROTECTED]> (F) wrote: >F> Can I ask for clarification. The charge applies to any commercial use >F> of a derivative work based on the Python source code ? >F> Normal applications that use Python, including bunding the standard >F> CPython as an executable, using tools like py2exe, won't be covered. >F> Right ? As I understand it, distributing Python is also covered. For a commercial vendor $1.25 is peanuts, but for the PSA it is a significant amount (think about all the Mac OSX copies if Apple decides to switch to 2.5). -- Piet van Oostrum <[EMAIL PROTECTED]> URL: http://www.cs.uu.nl/~piet [PGP 8DAE142BE17999C4] Private email: [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 2.4.3 Documentation: Bad link
Now, it works well... I really don't know why it before report 404 Not Found... I was tested it 5x... I'm sorry for unwanted false bug report. -- http://mail.python.org/mailman/listinfo/python-list
