🌐 Mailman 3 December 2003 - Python-list - python.org

Re: Installing PyOpenGL - can't find libnumarray module
by traveller3141＠att.net Dec. 30, 2003

Dec. 30, 2003

Sorry, when I originally uninstalled numarray & entered from OpenGL.GL import *, the traceback I got was Traceback (most recent call last): File "C:\Python23\lib\site- packages\Pythonwin\pywin\scintilla\formatter.py", line 222, in OnStyleNeeded notify = self.scintilla.SCIUnpackNotifyMessage(extra) File "C:\Python23\lib\site-packages\Pythonwin\pywin\scintilla\control.py" , line 57, in SCIUnpackNotifyMessage margin = margin) ImportError: No module named numarray.libnumarray win32ui: Exception in OnNotify() handler This is what led me to think that I needed the numarray module, which is why I reinstalled it. I should have been more clear about that. So, that's what started me wondering about the .pyd extension. The numpy installer I used was Numeric-23.1.win32-py2.3.exe, and the PyOpenGL installer I used was PyOpenGL-2.0.1.07.py2.3-numpy23.exe. I think these are the correct installers. Anyway, that's where I am & how I got here. Thanks for all your help > Steven Gutstein wrote: > > >"Mike C. Fletcher" <mcfletch(a)rogers.com> wrote in message > > > > > > > >>Basically, to fix the problem, uninstall NumArray and install NumPy 23.0. > >> > >> > >I tried this, without success. > >I also find I get the same error when I type > > > >from numarray import * > > > > > You are trying to import a package you just un-installed? Is this line > showing up from some other package you're trying to run and you're > debugging by trying it at the Python prompt? A Numpy import looks like > this: > > from Numeric import * > > AFAICS, there's nothing named numarray anywhere in a Numpy 23.0 > installation, so if you get that working, then you've not got NumArray > purged yet. > > However, since your original problem was an import error, "the same > error" probably (posting exception tracebacks is useful) indicates that > you're getting an ImportError saying that numarray doesn't exist. > That's what you *want* (since you don't want NumArray hanging around). > > >I'm wondering if there's some problem with the fact that libnumarray > >is a .pyd file. I came across a comment that for some reason .pyd > >files don't get found and what I should do is create the following > >setup.cfg file: > > > > > <lot of py2exe setup stuff snipped> > > This is only for creating stand-alone executables, it has nothing to do > with just running PyOpenGL. It's also related to NumArray, *not* Numpy, > so again, not relevant. > > >Is there something > >obvious that I'm missing here ? > > > > > Hopefully not any more. > > Good luck, > Mike > > _______________________________________ > Mike C. Fletcher > Designer, VR Plumber, Coder > http://members.rogers.com/mcfletch/ > > >

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Why does wxStaticBitmap display multiple images instead of one [Newbie alert]
by Knoppix User Dec. 30, 2003

Dec. 30, 2003

Hi everyone I am working on a small app that loads a directory into a list, using dirList = os.listdir(dirName) The idea is that it then traverses the list, storing each filename in curFile, and appending the directory: curFile = dirName + '/' + dirList[dirListndx] The image then is displayed using a call: self.showJpg(curFile) to the function showJpg: def showJpg(self, fName): #Display jpg to app img = wxImage(fName, wxBITMAP_TYPE_JPEG) imgSmall = img.Scale(200,200) wxStaticBitmap(self, -1, wxBitmapFromImage(imgSmall), pos = (245, 60), size= (100,100)) All works as planned, except that the image displayed, being correct, first shows, in rapid succession, each of the prior showed images before it halts at the appropriate curFile. I have tried to debug it in BoaConstructor, and the inputs to showJpg are appropriate. Am I using wxStaticBitmap incorrectly? Do I need to initialize wxStaticBitmap, and if so, how? Any help is much appreciated. Steve

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Re: Is Python Mac Centric???
by "Martin v. Löwis" Dec. 30, 2003

Dec. 30, 2003

Jeff Epler wrote: > There are also a couple of people who are working very hard on > Mac-specific modules for Python. I don't know why they're included in > the core while pythonwin is not--is it just historical coincidence? A > license difficulty? Change in attitudes? AFAIR, the Mac parts were included on request of Jack Jansen, who was looking for a "permanent home" for his code, with CVS, bug tracking, integrated releases, and all that. Guido van Rossum agreed, as it would make Jack's life simpler. I personally was shocked when I saw just *how* big the code base was, but then accepted it, as much of it is for OS9 and older, and the OSX stuff is more and more getting folded into the standard libraries (where applicable); OS9 support will be dropped for Python 2.4. Apart from Tim's analysis of coding styles, I think PythonWin would become integrated if Mark Hammond requested that. Anybody else requesting it would have no effect; and, as Tim said, Mark is unlikely to request it because he doesn't want to wait a year for the next Python release just to release the next version of PythonWin. Regards, Martin

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HDD Burn In with Python
by hokiegal99＠hotmail.com Dec. 30, 2003

Dec. 30, 2003

Hi Again, I have Macs, Windows and Linux PCs. I'd like to have a generic HDD burn in program to test new drives on all platforms. I know Python is portable enough to handle the platform differences, but would it be a good language for this type of application? The process would involve lots of reads and writes all over the drives for an extended period of time (several hours). Anybody else done something similar to this? Any suggestions? Thanks !!!

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Re: Storing objects required by functions.
by John Roth Dec. 30, 2003

Dec. 30, 2003

"Jp Calderone" <exarkun(a)intarweb.us> wrote in message news:mailman.58.1072824331.8134.python-list@python.org... > On Tue, Dec 30, 2003 at 03:22:09PM -0500, John Roth wrote: > > Could you please *not* add whatever signature or business > > card or whatever you're adding to your messages? My anti-virus > > blocks access to your entire message when you do that, > > and it's a royal pain to save the message and then disassemble > > it to find you made one line of comment. > > > > John Roth > > > > "Jp Calderone" <exarkun(a)intarweb.us> wrote in message > > news:mailman.51.1072812951.8134.python-list@python.org... > > > > It's a PGP signature. If the mail client you're using can't extricate the > plaintext part, I'd say it isn't a very good mail client. (Even mailman's > archiver deals with them the right way these days ;) Actually, whatever is doing it simply sequesters almost anything, including perfectly innocuous graphics. The difficulty is that the mail client still displays most of the sequestered attachments, but for some reason if it can't figure out one attachment, it doesn't display any of them. That means I've got to save the entire mail and use a command line tool to break it into pieces. Python's mail tools do a reasonable (not excellent) job of this, so nothing is lost, but it's more work than I usually want to go through for newsgroup messages. John Roth > > Jp >

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True standard Windows app in Python?
by Pjer Holton Dec. 30, 2003

Dec. 30, 2003

If I were to build a Windows application that is a true standard Windows application in every conceivable way and that adheres to the MS Windows standards as much as possible (installation, GUI, printing, registry, RTF etc.), and if portability to other platforms is only a minor concern, ... would Python be a good choice? What packages, libraries and modules would you recommend for GUI, installation, data storage etc.? Thank you very much in advance for your advice! -- Pjer.

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Newbie: sort list of dictionaries
by Sven Brandt Dec. 30, 2003

Dec. 30, 2003

Hi there, please excuse for asking such basic questions (I am new to programming, esp. python). I have a list of dictionaries. I want the elements of the list to be sorted by the value of a key of the dict . Excample: my_list=[{'title': 'foo', 'id': 5, 'text': 'some text'}, {'title': 'bar', 'id': 3, 'text': 'my text'}, {'title': 'bla', 'id': 6, 'text': 'any text'}, ] my_list.sort("by the id value") Thanx for help Sven

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Coding an extendable class
by Tobias Pfeiffer Dec. 30, 2003

Dec. 30, 2003

Hi! I want to write a package of modules that deal with mathematical graphs. So my plan is to have a main.py file where the basic operations are done, like reading the file and creating an adjacence list and all that. In this main.py file, there is created a Graph class with several methods, such as deg(v) or delvertex(v). And then, for all of the other things one can do with a graph, I want to code other modules, e.g. a file euler.py for finding an Euler way through the graph, that extends the class by the method eulerway(). I know that I can do something like # graphtools/euler.py import main class Graph(main.Graph): def eulerway(self): [...] and then the Graph class imported from euler.py will have both the old and the new methods. But what can I do if I want the end user to be able to combine several modules and I don't know in which order he will do? For example, by import graphtools.main, graphtools.hamilton I can do the thingy described above, but what is with something like import graphtools.hamilton, graphtools.euler ? In that case I want the class to have all of the methods defined in the modules. How do I realize that in the best way? Bye Tobias -- please send any mail to botedesschattens(at)web(dot)de

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Re: Storing pairs of (int, int) in a database : which db to choose ?
by andreif＠mail.dntis.ro Dec. 30, 2003

Dec. 30, 2003

Skip Montanaro <skip(a)pobox.com> wrote in message news:<mailman.81.1072198845.684.python-list(a)python.org>... > andrei> So my problem now is what should I use to store my data and > andrei> still be able to retrieve all messages for a given word very > andrei> quickly. > > There's the rub. PySQLlite consumes a lot of disk space presumably to > support efficient access to the data (hashing keys, etc). If you want > compact storage you aren't likely to do much better than > > wordid1:msgid1 > wordid2:msgid2 > ... > > Unfortunately, searching that will probably be a bit slow. Well - I want to use this storage to speed up my searches so searching will really need to be fast. I didn't want the most compact storage, but at 88 bytes to store a couple of integers is just way too much. Another reason I wanted to use a database like sqlite is that it presents some safety guarantees. If something goes wrong when updating (like no diskspace left on end-user's disk) then the data is still says safe, i.e. the latest transaction is not commited and that's it. I wrote a similar version of what I wanted a couple of years ago not using a database, just C/C++ code, something like this (I think a similar method was suggested in this thread) : I was processing messages in batches, so for each 10000 messages or so I would make in memory a list of words and in what messages occur, and for each word I would write all messages that contain it as consecutive entries in a file. Then I would update the global word index (kept in another file), which for each work kept a linked list of zones in the other file where msgIds containg this word were. Worked pretty well, but this was for a server I controlled, i.e. at all times I was sure I had enough space and I was controling it. For an application to be deployed to end-users I need more safety. That is why I am playing with sql. > If the word ids and msg ids have fixed maximum sizes you might try zero- or > space- padding them so your records are of fixed length. You can then store > the file sorted by wordid and do a binary search in the file looking records > of interest. Still would be too slow for a search, and search is the main reason for this structure. > Another possibility, assuming your database keys are integers, is to try the > bsddb recno format database. I've never used it before (not as much call > for a database file with integer keys), but it seems to be *relatively* > space-efficient. I believe it doesn't actually need to store the keys, > since they are implicit. > > I built a recno db file containing the pickle of the squares of the numbers > in range(1, 100000): > > >>> for n in range(1,100000): > ... db1[n] = pickle.dumps(n*n) > ... > > The total string length of the pickled squares was 1.3MB. The file size was > 2.1MB. Interesting. Fortunately I found lupy which suits me, but if I were not I might have been tempted to experiment with that. Andrei

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OT: World's largest Python caught!:)
by Adam Twardoch Dec. 30, 2003

Dec. 30, 2003

http://www.wftv.com/news/2732086/detail.html Adam -- "My mother never saw the irony in calling me a son-of-a-bitch" [Jack Nicholson]

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