Packt published an article about xtopdf - creating PDF from Plain Text, DBF, CSV, TDV, and XLS Data
Hi group, This is an article I wrote for Packt Publishing - http://www.packtpub.com : Using xtopdf, a PDF creation toolkit - http://www.packtpub.com/article/Using_xtopdf It shows how to use xtopdf - http://sourceforge.net/projects/xtopdf - to create PDF from plain text, DBF, CSV, TDV and XLS data. Use of both command-line and the GUI tools in xtopdf is covered. xtopdf is written in Python and requires the ReportLab toolkit. The GUI tools are written in wxPython - http://www.wxpython.org. Enjoy Vasudev Ram ~~ Software consulting and training http://www.dancingbison.com ~~ -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
Re: Search or compai problem
At Saturday 19/8/2006 01:16, [EMAIL PROTECTED] wrote: it is really lstusers (it is an L not a # 1), Some of the output from print lstUsers has the output of None. I and trying to filter the None out of the list. I come from a perl background and this is how I do thing in perl None is a unique object used as nothing or no value. Try reading the Python tutorial, it's easy and you will learn a lot of things. Gabriel Genellina Softlab SRL __ Preguntá. Respondé. Descubrí. Todo lo que querías saber, y lo que ni imaginabas, está en Yahoo! Respuestas (Beta). ¡Probalo ya! http://www.yahoo.com.ar/respuestas -- http://mail.python.org/mailman/listinfo/python-list
Re: text editor suggestion?
BartlebyScrivener wrote: John Salerno wrote: Ok, I know it's been asked a million times, but I have a more specific question so hopefully this won't be just the same old post. You got 65 answers last time :) http://tinyurl.com/rsfjq rd Hmm, I forgot all about that. Although I think the few editors I tried recently was a result of that thread! I guess none of the suggestions worked out for me. Oh well, I'll just keep trying different ones. -- http://mail.python.org/mailman/listinfo/python-list
Re: text editor suggestion?
Ben Finney wrote: The two big names in text editing, Vim and Emacs, will both meet these criteria easily. They also have the advantage that you'll find one or the other, or both, on just about any Unix system intended for use by a programmer. There is also an enormous amount of support for both these editors, for all manner of text editing tasks, available online. It's a good idea to learn at least one of them very well, rather than learn a bunch of less-popular editors for specific tasks. I'd really like to learn vim, but I spent days just trying to figure out how to get the syntax highlighting and indentation working, where these settings are and how to edit them, and it still doesn't work for me. It just feels so insurmountable that I can't even start working with it yet because I don't know how to tailor the settings. -- http://mail.python.org/mailman/listinfo/python-list
Re: couple more questions about sqlite
Dennis Lee Bieber wrote: SQLite, in whatever incarnation, is a file server database. There is no separate database server running -- each application is linked directly to the code that opens and processes the database file(s). If SQLite is supplied with the impending Python 2.5, then the code/library to access the database file is included. If one is running Python 2.4, then one needs to obtain the third-party pysqlite package -- which, as I recall, includes the runtime library that does the database file work. The only reason, then, to download the stand-alone SQLite package (not the python package) would be to obtain the command line query/admin tool. Thanks, that was a great response that pretty much covered everything I was wondering. I would need pysqlite right now (2.4), or sqlite3 (2.5), and I don't necessarily need the command line program if I'm using Python as an interface. What is really confusing is that I did a search for 'sqlite' in my Ubuntu repositories and it came up with entries like this: python2.4-pysqlite1.1 python interface to SQLite 3 python2.4-pysqlite2 python interface to SQLite 3 python2.4-pysqlite python interface to SQLite 2 python-pysqlite1.1 python interface to SQLite 3 python-pysqlite2python interface to SQLite 3 python-sqlite python interface to SQlite 2 Needless to say, the numbering had me banging my head against my desk. -- http://mail.python.org/mailman/listinfo/python-list
Re: text editor suggestion?
John Salerno wrote: I'd really like to learn vim, but I spent days just trying to figure out how to get the syntax highlighting and indentation working, where these settings are and how to edit them, and it still doesn't work for me. It just feels so insurmountable that I can't even start working with it yet because I don't know how to tailor the settings. FWIW I started to use vim 2 years ago, and hated every minute of it. However, it was installed on every unix/linux box I have known, and so I gradually learned the most common commands. Recently I have been using gvim on windows, which comes pre-configured to syntax highlight etc. It isn't very good at running the current buffer as far as I can tell though, so I still have a command line open currently. jEdit is also a very good editor with the same sort of feature set as vim. Bit slower to load, but much more user freindly and a very powerful editor core. With a few extra plugins (console and Jython interpreter for example) it has all of the features you want, including he ability to write macros in python. (Note vim is also customisable using python). -- http://mail.python.org/mailman/listinfo/python-list
Re: efficient memoize decorator?
[EMAIL PROTECTED] wrote: im plugging away at the problems at http://www.mathschallenge.net/index.php?section=project im trying to use them as a motivator to get into advanced topics in python. one thing that Structure And Interpretation Of Computer Programs teaches is that memoisation is good. all of the memoize decorators at the python cookbook seem to make my code slower. is using a decorator a lazy and inefficient way of doing memoization? can anyone point me to where would explain how to do it quickly. or is my function at fault? Your problem is that you are mixing psyco and memoize decorators; psyco cannot accelerate inner functions that use nested scopes (see http://psyco.sourceforge.net/psycoguide/unsupported.html ). You could try using the memoize decorator from: http://wiki.python.org/moin/PythonDecoratorLibrary , which doesn't use functions with closures, or use Fredrik Lundh's solution which puts memoization directly into the function. Ziga -- http://mail.python.org/mailman/listinfo/python-list
Re: couple more questions about sqlite
Robert Kern wrote: John Machin wrote: John Salerno wrote: John Machin wrote: Your confusion is quite understandable. I started looking at sqlite when the announcement that it would be included in Python 2.5 came out. Puzzlement reigned. I ended up with the following up the front of my experimental module: So does this mean that when 2.5 is released, all I need is the built-in module sqlite3? Plus the command-line utility, which AFAICT is not included with Python 2.5. Why? The sqlite3 module links to the library; it doesn't need a separate executable. Or is that what you meant (since one generally never installs the library without also installing the executable, too)? Hi, Robert, Sorry if that and the earlier message were unclear. The Python module does Python DPAPI without any help from the standalone executable. AFAICT (so far) the standalone executable also links to the library; it provides a command-line interface to most/all the underlying sqlite functionality. This is my understanding, but as stated earlier, I haven't been playing with it for long, and maybe the Python module goes way beyond DBAPI and I haven't stumbled on the extra goodies yet. Regards, John -- http://mail.python.org/mailman/listinfo/python-list
Re: sum and strings
Georg Brandl wrote: Paul Rubin wrote: Sybren Stuvel [EMAIL PROTECTED] writes: Because of there should only be one way to do it, and that way should be obvious. There are already the str.join and unicode.join methods, Those are obvious??? Why would you try to sum up strings? Besides, the ''.join idiom is quite common in Python. One could extend this argument to dissallow the following: foo + bar -- http://mail.python.org/mailman/listinfo/python-list
Re: Documenting a package with Pydoc
Anyone? -- http://mail.python.org/mailman/listinfo/python-list
sending values over classes
Hi, How to read/write value over different classes (in different files) Something like global values? Thanks Rafał -- http://mail.python.org/mailman/listinfo/python-list
Re: efficient memoize decorator?
thanks, i was not just being lazy. i wanted to play with decorators and
tell people on the forums how cool python is :)
cheers for getting back to me, i could have done that myself i think,
bar the error checking. do you have any links on good practice in
python (i do think i am very lazy re: error checking and would like to
make myself better)
cheers, tom
Fredrik Lundh wrote:
[EMAIL PROTECTED] wrote:
all of the memoize decorators at the python cookbook seem to make my
code slower.
if you want good performance, use the following pattern:
def col(n, count, memo={}):
try:
return memo[n, count]
except KeyError:
# ... calculate value ...
memo[n, count] = value
return value
for some access patterns, the following may be faster:
def col(n, count, memo={}):
value = memo.get((n, count))
if value is None:
# ... calculate value ...
memo[n, count] = value
return value
to get maximum performance, make the memo dictionary public, and make
the check at the original call site.
is using a decorator a lazy and inefficient way of doing memoization?
lazy, yes. inefficient? it depends.
/F
--
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Re: efficient memoize decorator?
does not seem to work for standalone functions, this is a method decorator only then? Traceback (most recent call last): File prob14memoize.py, line 94, in ? length = col(i,1) File prob14memoize.py, line 49, in __call__ object = self.cache[args] = self.fn(self.instance, *args) AttributeError: 'Memoize' object has no attribute 'instance' cheers, tom Gabriel Genellina wrote: At Friday 18/8/2006 17:14, [EMAIL PROTECTED] wrote: sorry memoize is http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/496879 This implementation uses cPickle to generate a key from the supplied function arguments, which is very slow and defeats the purpose of memoizing. In your example -function with no keyword arguments- use the much simpler implementation from http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/325205 NOT the original recipe but the comment by Chris Spencer titled A working example. Gabriel Genellina Softlab SRL __ Preguntá. Respondé. Descubrí. Todo lo que querías saber, y lo que ni imaginabas, está en Yahoo! Respuestas (Beta). ¡Probalo ya! http://www.yahoo.com.ar/respuestas -- http://mail.python.org/mailman/listinfo/python-list
Re: efficient memoize decorator?
am i correct in thinking that psyco will just not accelerate, rather than break code it cannot deal with? that has been a pretty standard import on all my programs tom Ziga Seilnacht wrote: [EMAIL PROTECTED] wrote: im plugging away at the problems at http://www.mathschallenge.net/index.php?section=project im trying to use them as a motivator to get into advanced topics in python. one thing that Structure And Interpretation Of Computer Programs teaches is that memoisation is good. all of the memoize decorators at the python cookbook seem to make my code slower. is using a decorator a lazy and inefficient way of doing memoization? can anyone point me to where would explain how to do it quickly. or is my function at fault? Your problem is that you are mixing psyco and memoize decorators; psyco cannot accelerate inner functions that use nested scopes (see http://psyco.sourceforge.net/psycoguide/unsupported.html ). You could try using the memoize decorator from: http://wiki.python.org/moin/PythonDecoratorLibrary , which doesn't use functions with closures, or use Fredrik Lundh's solution which puts memoization directly into the function. Ziga -- http://mail.python.org/mailman/listinfo/python-list
Small Troll on notation of variables over time
Hi there,
I can write:
s = 'some string'
then print s[1] will be the string 'o'
and a while later I can write:
s = 'other some string'
then print s[1] will be the string 't'
and then:
s = [1,2,3,4]
then print s[1] will be the number 2
and still later:
s = {1:'boo',2:'foo',3:'shoo'}
when print s[1] will yield the string 'boo'
Now how about introducing an index that works over time,
such that s{0} (the default so as to not break any existing code)
implies the current object bound to the name s,
with s{1} being the previous one, and so on...
This will mean that s{2}[1] is the string 't'
and s{3}[1] is the string 'o'
while s{4} should be None...
It should be easy to implement this, as all that needs to be done is to
change the pointer (or whatever) to the object with a stack of them
at the time the binding or rebinding is done...
I first thought of using s{-1} for the previous value but that
suffers from the regrettable disadvantage that it implies the
existence of an s{1} - i.e. a future value - and I could not think
of a way to achieve this - so the minus sign adds no information
and should therefore be left out...
What do you guys think?
- Hendrik
--
http://mail.python.org/mailman/listinfo/python-list
Re: text editor suggestion?
Oh well, I'll just keep trying different ones. If you demand power and cross-platform compatibility, I think you already know your choices are Xemacs or Vim 7.0. They are both modal and therefore difficult to learn, at first, but later you enjoy the pleasures of interface Zen: http://tinyurl.com/osys2 rd -- http://mail.python.org/mailman/listinfo/python-list
Re: efficient memoize decorator?
I suppose that lesson should not suprise me, programming is a subtle art that i need spend some time mastering thanks to all that have replied tom Fredrik Lundh wrote: Gabriel Genellina wrote: This implementation uses cPickle to generate a key from the supplied function arguments, which is very slow and defeats the purpose of memoizing. depends on the cost of recreating an object, of course. it's a bit surprising that so many programmers seem to think that there are one size fits all solutions to caching and memoization... /F -- http://mail.python.org/mailman/listinfo/python-list
How to get the ascii code of Chinese characters?
Hi,everyone: Have you any ideas? Say whatever you know about this. thanks. -- http://mail.python.org/mailman/listinfo/python-list
Re: Text to MP3 using pyTTS - Non-programmer question
[EMAIL PROTECTED] wrote: Thanks for the script. Are there any online python intrepreters? I'd like to play around with the script. I don't have access to my home PC. You probably will have to wait till you get to yours. There were some AJAXian ones but I doubt that you will find a free (assuming that you meant that) online interpreter on a MS Windows box that allows you to install your modules and give you an FTP or such account to get the recorded file back. -- http://mail.python.org/mailman/listinfo/python-list
Re: How to get the ascii code of Chinese characters?
many_years_after wrote: Hi,everyone: Have you any ideas? Say whatever you know about this. thanks. Hi, You mean unicode I assume: http://www.rikai.com/library/kanjitables/kanji_codes.unicode.shtml Regards, Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: text editor suggestion?
John Salerno wrote: Ok, I know it's been asked a million times, but I have a more specific question so hopefully this won't be just the same old post. I've tried a few different editors, and I really like UltraEdit, but it's Windows-only and I'm working more on Linux nowadays. Here are my criteria: 1. syntax highlighting (highly customizable) 2. auto/smart indenting 3. ability to run script 4. light-weight text editor, not an IDE 5. cross-platform (not really necessary, but nice) That's pretty much all I need. It's nice when you can customize a bunch of other stuff too, but those are the most important. I've tried vim, but I really don't feel like taking the time to learn how to use it, given that I just like to casually program (not to mention that I prefer to use the mouse when navigating a document sometimes). I also just started using Scite, and I really like it, except I find its syntax highlighting to be very inflexible. You aren't able to define your own groups of words -- you have to use what's given, basically. One thing I like about UltraEdit is that you simply define as many groups of keywords as you want and then assign a style to each one. Scite has a very strange and rigid method of highlighting. So hopefully some of you might have some suggestions. My requirements are minimal, but I'm still not happy with the syntax highlighting I'm seeing in a lot of editors out there. Emacs would be my choice. Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: Documenting a package with Pydoc
At Friday 18/8/2006 11:45, Rob Cowie wrote: Pydoc seems to be capable of writing documentation for all modules within a package by simply pointing it to the package on the command line... pydoc -w packagename_without_/ Certainly, the method writedocs() appears to descend into a directory and create docs for each importable object. Perhaps I'm doing something wrong but when I do this, pydoc reports that no Python documentation can be found for each of the contents of the package. Of course, if I point pydoc directly to the modules, it succeeds. Am I doing something wrong? That appears to be a bug. In pydoc.writedocs, when iterating over the package directory contents, it uses inspect.getmodulename(path). That returns the bare filename (without path nor extension) (is it ok???), and later the resolve() function can't load the module because it lacks package information. For simple cases this patch may work: In writedocs, add the following line at the beginning: if pkgpath=='' and ispackage(dir): pkgpath = os.path.basename(dir) + '.' This works for top level packages located at sys.path, but not for packages located elsewhere. By example, I can generate now the docs for pychart: python c:\apps\python\lib\pydoc.py -w c:\apps\python\lib\site-packages\pychart Gabriel Genellina Softlab SRL __ Preguntá. Respondé. Descubrí. Todo lo que querías saber, y lo que ni imaginabas, está en Yahoo! Respuestas (Beta). ¡Probalo ya! http://www.yahoo.com.ar/respuestas -- http://mail.python.org/mailman/listinfo/python-list
Re: text editor suggestion?
http://scribes.sourceforge.net/ Flash Demo: http://scribes.sourceforge.net/snippets.htm GIF Demo: http://www.minds.may.ie/~dez/images/blog/scribes.html Scribes is simple, slim, sleek and fast. It has no learning curve and conveys a no nonsense approach to text editing. You won't need to edit configuration files in lisp, read manuals or sacrifice your unborn grand daugther to the geek goddesses. It's also written in Python. Some people have described it as TextMate for Linux. Version 0.3 will be released in few days and will feature - remote editing - a document browser to show all files opened by the editor - recent files menu - more steriods... John Salerno wrote: Ok, I know it's been asked a million times, but I have a more specific question so hopefully this won't be just the same old post. I've tried a few different editors, and I really like UltraEdit, but it's Windows-only and I'm working more on Linux nowadays. Here are my criteria: 1. syntax highlighting (highly customizable) 2. auto/smart indenting 3. ability to run script 4. light-weight text editor, not an IDE 5. cross-platform (not really necessary, but nice) That's pretty much all I need. It's nice when you can customize a bunch of other stuff too, but those are the most important. I've tried vim, but I really don't feel like taking the time to learn how to use it, given that I just like to casually program (not to mention that I prefer to use the mouse when navigating a document sometimes). I also just started using Scite, and I really like it, except I find its syntax highlighting to be very inflexible. You aren't able to define your own groups of words -- you have to use what's given, basically. One thing I like about UltraEdit is that you simply define as many groups of keywords as you want and then assign a style to each one. Scite has a very strange and rigid method of highlighting. So hopefully some of you might have some suggestions. My requirements are minimal, but I'm still not happy with the syntax highlighting I'm seeing in a lot of editors out there. -- http://mail.python.org/mailman/listinfo/python-list
Re: Small Troll on notation of variables over time
Hendrik van Rooyen wrote:
Hi there,
I can write:
s = 'some string'
then print s[1] will be the string 'o'
and a while later I can write:
s = 'other some string'
then print s[1] will be the string 't'
and then:
s = [1,2,3,4]
then print s[1] will be the number 2
and still later:
s = {1:'boo',2:'foo',3:'shoo'}
when print s[1] will yield the string 'boo'
Now how about introducing an index that works over time,
such that s{0} (the default so as to not break any existing code)
implies the current object bound to the name s,
with s{1} being the previous one, and so on...
This will mean that s{2}[1] is the string 't'
and s{3}[1] is the string 'o'
while s{4} should be None...
It should be easy to implement this, as all that needs to be done is to
change the pointer (or whatever) to the object with a stack of them
at the time the binding or rebinding is done...
I first thought of using s{-1} for the previous value but that
suffers from the regrettable disadvantage that it implies the
existence of an s{1} - i.e. a future value - and I could not think
of a way to achieve this - so the minus sign adds no information
and should therefore be left out...
What do you guys think?
I think it's pointless. If you want access to more than one of these
variables, don't use the same name.
That and if a symbol is still in scope, then all of its previous values
still have active references, so they won't get deallocated by the
garbage collector, meaning a lot of overhead that most people will not
take advantage of.
--
http://mail.python.org/mailman/listinfo/python-list
Re: efficient memoize decorator?
At Saturday 19/8/2006 07:58, [EMAIL PROTECTED] wrote: am i correct in thinking that psyco will just not accelerate, rather than break code it cannot deal with? that has been a pretty standard import on all my programs Don't optimize what doesn't deserve optimization... That's a pretty standard mantra. Gabriel Genellina Softlab SRL __ Preguntá. Respondé. Descubrí. Todo lo que querías saber, y lo que ni imaginabas, está en Yahoo! Respuestas (Beta). ¡Probalo ya! http://www.yahoo.com.ar/respuestas -- http://mail.python.org/mailman/listinfo/python-list
Re: How to get the ascii code of Chinese characters?
many_years_after wrote: Hi,everyone: Have you any ideas? Say whatever you know about this. Perhaps you had better explain what you mean by ascii code of Chinese characters. Chinese characters (hanzi) can be represented in many ways on a computer, in Unicode as well as many different legacy encodings, such as GB, GBK, big5, two different 4-digit telegraph codes, etc etc. They can also be spelled out in roman letters with or without tone indications (digits or accents) in the pinyin system -- is that what you mean by ascii code? Perhaps you might like to tell us what you want to do in Python with hanzi and ascii codes, so that we can give you a specific answer. With examples, please -- like what are the ascii codes for the two characters in the common greeting that comes across in toneless pinyin as ni hao? Cheers, John -- http://mail.python.org/mailman/listinfo/python-list
Re: efficient memoize decorator?
At Saturday 19/8/2006 07:56, [EMAIL PROTECTED] wrote: does not seem to work for standalone functions, this is a method decorator only then? Traceback (most recent call last): File prob14memoize.py, line 94, in ? length = col(i,1) File prob14memoize.py, line 49, in __call__ object = self.cache[args] = self.fn(self.instance, *args) AttributeError: 'Memoize' object has no attribute 'instance' For a standalone function, you should remove __del__ and self.instance, but I haven't tried it... Gabriel Genellina Softlab SRL __ Preguntá. Respondé. Descubrí. Todo lo que querías saber, y lo que ni imaginabas, está en Yahoo! Respuestas (Beta). ¡Probalo ya! http://www.yahoo.com.ar/respuestas -- http://mail.python.org/mailman/listinfo/python-list
Re: Small Troll on notation of variables over time
Hendrik van Rooyen wrote: [snip] What do you guys think? The subject said it all. You should find some other way of entertaining yourself on the weekends :-) -- http://mail.python.org/mailman/listinfo/python-list
Re: Small Troll on notation of variables over time
At Saturday 19/8/2006 07:49, Hendrik van Rooyen wrote:
Now how about introducing an index that works over time,
such that s{0} (the default so as to not break any existing code)
implies the current object bound to the name s,
with s{1} being the previous one, and so on...
Doing that *always* for *all* names would be ridiculous - objects
would never get garbage collected, by example. And
99.% of programs don't need that behavior at all.
So just implement that for your use case - if you have any!
Gabriel Genellina
Softlab SRL
__
Preguntá. Respondé. Descubrí.
Todo lo que querías saber, y lo que ni imaginabas,
está en Yahoo! Respuestas (Beta).
¡Probalo ya!
http://www.yahoo.com.ar/respuestas
--
http://mail.python.org/mailman/listinfo/python-list
Re: Subprocess quote problem
In message [EMAIL PROTECTED], Adriano Monteiro wrote: Failed to open input file /home/adriano/umit/test/targets for reading QUITTING! Which is not the same as saying: Failed to open input file /home/adriano/umit/test/targets for reading QUITTING! Spot the difference? command = ['nmap', '-T', 'Aggressive', '-n', '-F', '-iL', '/home/adriano/umit/test/targets'] Why exactly where you putting quotes within quotes in the path? That kind of thing is only necessary when typing things on the shell command line, to prevent the shell itself misinterpreting things, like putting word breaks in the wrong places or having wrong behaviours triggered by special characters. -- http://mail.python.org/mailman/listinfo/python-list
Re: couple more questions about sqlite
John Salerno [EMAIL PROTECTED] writes: What is really confusing is that I did a search for 'sqlite' in my Ubuntu repositories and it came up with entries like this: python2.4-pysqlite1.1 python interface to SQLite 3 python2.4-pysqlite2 python interface to SQLite 3 python2.4-pysqlite python interface to SQLite 2 That's python2.4-sqlite, not python2.4-pysqlite. The reason for both having pythonX.Y-foo and python-foo packages is Debian's (and therefore Ubuntu's) Python package policy. python-pysqlite1.1 python interface to SQLite 3 python-pysqlite2python interface to SQLite 3 python-sqlite python interface to SQlite 2 Needless to say, the numbering had me banging my head against my desk. Sorry to hear that, and I can understand that the names are a bit confusing. Here's the story behind the mess: In the beginning (well, at least in 2003 when I found out about SQLite), SQLite was up to version 2.something and the Python module was called sqlite.py. While the Python module *project* was called pysqlite 0.something, Debian modules were generally called python-foo when providing the module foo; hence the name python-sqlite. Then, SQLite 3 was released (incompatible with SQLite 2 databases), and pysqlite 1.1 was released with the same module name (sqlite.py) and API as the old sqlite.py module but linked against SQLite 3. I decided not to package that version but instead wait for pysqlite 2, a rewritten and improved version linked against SQLite 3 and with a new Python API. pysqlite 2 was released and the Python module was called pysqlite2.dbapi2. I didn't think python-sqlite3 would be a good name for the Debian package since there were actually two different pysqlite versions (both actively maintained) linked against SQLite3, so I ended up calling the package python-pysqlite2, following the name and version of the pysqlite project instead of the module. Finally, by request of Debian users, I also packaged the other pysqlite version linked against SQLite 3 giving the package python-pysqlite1.1. Oh, and then there's python-apsw too. :-) Regards, Joel (maintainer of Debian's Python-related sqlite packages) -- Joel Rosdahl [EMAIL PROTECTED] Key BB845E97; fingerprint 9F4B D780 6EF4 5700 778D 8B22 0064 F9FF BB84 5E97 -- http://mail.python.org/mailman/listinfo/python-list
write eof without closing
hello can i write a eof to a file descriptor without closing it? like: fd.write(EOF) or something grts, ruben -- http://mail.python.org/mailman/listinfo/python-list
Zope hosting
I'am searching a cheap ZPP Hoster. Some informations? Greetings Escorial2000 -- http://mail.python.org/mailman/listinfo/python-list
Re: timezones and time_t
MrBlueSky wrote: Hi, I've got a Python application that (as well as lots of other stuff!) has to translate time_t values into strings in the TZ of the users choice. Looking at the Python Library Reference, I can see no platform independent way of setting the TZ that time.localtime() returns - tzset() is marked as only available on Unix and that is indeed the case. Is there really nothing shipped as standard? I'm using Python 2.4.3 on Windows XP. If not, what's the de-facto standard... pytz? Ta! John All of the timezone stuff in the standard C/Python libraries is very badly named and the use of implicit 'TZ' variables in various functions without a hint in their __doc__ is also annoying. Basically, I recommend just doing your own TZ translation: time.asctime(time.gmtime(time.time() + TZOFFSET)) My name recommendations for alternative time interface (t=float-time_t, tt=timetuple, local_ prefix=function converts via tz parameters): time.time - time.gmt Return the current GMT as a float time_t time.local_t - time. Return the current Local Time as a float time_t If argument is given, convert it to local format. time.asctime - time.str Return the given time_t as a string. No conversions done. time.ctime - time.local_str Remove in favor of: time.str(time.local_t) time.mktime - time.t_of_tt time.gmtime - time.tt_of_t time.localtime - Remove in favor of: time.tt_of_t(time.local_t) These functions above will prevent a lot of confusion, because you are forced to either use: time.local_t or time.gmt, and thus you are aware of what the time_t you are using means. When you use time.str no implicit conversion takes place as in time.ctime, and confusion is avoided. Do you think this is worth a PEP? -- http://mail.python.org/mailman/listinfo/python-list
Re: write eof without closing
In [EMAIL PROTECTED], cage wrote: can i write a eof to a file descriptor without closing it? like: fd.write(EOF) or something What do you expect this to to? Writing a byte to the file and you don't know which value this byte has? Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list
Re: text editor suggestion?
Did you try gedit? It has an options, which you need, I think. Regards. -- http://mail.python.org/mailman/listinfo/python-list
tkinter btn visual state with tkMessageBox
why is the button sunken when called through a bind method, and not with the command attribute? Thank you! ## Cut'nPaste example from Tkinter import * import tkMessageBox class Vue(object): def __init__(self): self.root=Tk() self.root.title(test button visual state) self.b1=Button(self.root,text=tkMessageBox.showinfo with bind :-() #,command=self.showMsg) self.b1.bind(Button,self.showMsg) self.b2=Button(self.root,text=tkMessageBox.showinfo with command :-),command=self.showMsg) self.b1.pack() self.b2.pack() self.root.mainloop() def showMsg(self,evt=1): if evt==1: txt=From button with command else: txt=From button with bind tkMessageBox.showinfo(Test of button, txt) if __name__==__main__: v=Vue() -- http://mail.python.org/mailman/listinfo/python-list
Re: Questions on unittest behaviour
In article [EMAIL PROTECTED], Collin Winter [EMAIL PROTECTED] wrote: While working on a test suite for unittest these past few weeks, I've run across some behaviours that, while not obviously wrong, don't strike me as quite right, either. Submitted for your consideration: 1) TestCase.tearDown() is only run if TestCase.setUp() succeeded. It seems to me that tearDown() should always be run, regardless of any failures in setUp() or the test method itself. I look at setUp() as a constructor. It's the constructor's job to either completely construct an object, or clean up after itself. With your example: def setUp(self) lock_file(testfile) # open_socket(), connect_to_database(), etc something_that_raises_an_exception() def tearDown(self): if file_is_locked(testfile): unlock_file(testfile) It would be cleaner to just do: def setUp(self): lock_file() try: something_that_raises_an_exception() except unlock_file() raise In this pseudo-code example, the file won't be unlocked if some later operation in setUp() raises an exception. I propose that TestCase.run() be changed to always run tearDown(), even if setUp() raise an exception. While this might simplify setUp() methods, it complicates tearDown()s, because now they can't be sure what environment they're running in. One way or the other, somebody has to deal with exceptions in setUp(). Keeping the exception handling code as close to the source of the exception seems like the right thing to do. -- http://mail.python.org/mailman/listinfo/python-list
Re: How to get the ascii code of Chinese characters?
Philippe Martin wrote: many_years_after wrote: Hi,everyone: Have you any ideas? Say whatever you know about this. thanks. Hi, You mean unicode I assume: http://www.rikai.com/library/kanjitables/kanji_codes.unicode.shtml Regards, Philippe Hi, I have received a personnal email on this: Kanji is indeed a Japanese subset of the Chinese Character set. I just thought it would be relevant as it includes ~47000 characters. If I hurt any feeling, sorry. Regards, Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: Small Troll on notation of variables over time
John Machin [EMAIL PROTECTED] wrote: | | Hendrik van Rooyen wrote: | [snip] | What do you guys think? | | The subject said it all. You should find some other way of entertaining | yourself on the weekends :-) This is the right answer... *grin* - well - at least you *were* warned... - Hendrik -- http://mail.python.org/mailman/listinfo/python-list
Re: PyThreadState_Swap(NULL)
On Fri, Aug 18, 2006 at 02:21:40PM -0700, Bryan wrote: i've written a program that uses python c api code that lives in a shared library that is loaded by a custom apache module (mod_xxx). this python c api code all works correctly under our test server and under apache but only if mod_python isn't loaded. when apache loads mod_python as shown in the http.conf snippet below, PyThreadState_Swap(NULL) in mod_xxx returns NULL. when the snippet of code in http.conf is commented out, it works again. what do i have to do to have mod_xxx code work correctly when apache loads mod_python? failure case when apache loads mod_python: Py_Initialize() succeeded PyThreadState_Swap(NULL) failed sucess case when apache doesn't load mod_python: Py_Initialize() succeeded PyThreadState_Swap(NULL) succeeded Running multiple python interpreters in the same process isn't supported. It works OK for most things but some low-level guts are shared between interpreters so it is possible to run into trouble. You aren't running multiple interpreters in the same process. You and mod_python both think you are in charge and end up nuking each other's states. Py_Initialize() resets the global state and shouldn't be called more than once. You can create more than one sub-interpreter (check out the mod_python source for how, the source is small and readable). The best thing to do would be to load your module last and conitionally call Py_Initialize() if someone else hasn't already. -Jack -- http://mail.python.org/mailman/listinfo/python-list
Re: How to get the ascii code of Chinese characters?
hi: what I want to do is just to make numbers as people input some Chinese character(hanzi,i mean).The same character will create the same number.So I think ascii code can do this very well. John Machin wrote: many_years_after wrote: Hi,everyone: Have you any ideas? Say whatever you know about this. Perhaps you had better explain what you mean by ascii code of Chinese characters. Chinese characters (hanzi) can be represented in many ways on a computer, in Unicode as well as many different legacy encodings, such as GB, GBK, big5, two different 4-digit telegraph codes, etc etc. They can also be spelled out in roman letters with or without tone indications (digits or accents) in the pinyin system -- is that what you mean by ascii code? Perhaps you might like to tell us what you want to do in Python with hanzi and ascii codes, so that we can give you a specific answer. With examples, please -- like what are the ascii codes for the two characters in the common greeting that comes across in toneless pinyin as ni hao? Cheers, John -- http://mail.python.org/mailman/listinfo/python-list
Re: how do you get the name of a dictionary?
Tim Chase wrote: [name for name in dir() if id(eval(name)) == id(banana)] ['banana', 'spatula'] Please, if you are going to do something like this, then please at least use the 'is' operator. Using id(expr1)==id(expr2) is just plain stupid: it will actually work in this case, but as soon as you get into a mindset of testing for the same object by comparing object ids you are going to shoot yourself in the foot. The first of the following tests returns True, which looks sensible at first glance (even though it shouldn't), but what of the second one? class C: def method1(self): pass def method2(self): pass inst = C() id(inst.method1)==id(inst.method1) True id(inst.method1)==id(inst.method2) True Much better to use 'is' and get consistent results inst.method1 is inst.method1 False (In case I didn't make it clear, the problem in general with comparing the result of calling 'id' is that as soon as the first call to id returns, any object created when evaluating its parameter can be freed, so the second call to id can reuse memory and get the same answer even though the objects are different.) -- http://mail.python.org/mailman/listinfo/python-list
Re: write eof without closing
On 2006-08-19, cage [EMAIL PROTECTED] wrote: can i write a eof to a file descriptor without closing it? No. Not on Windows, OS-X, or Unix. There is no such thing as an eof. On CP/M Ctrl-Z is used as EOF for text files. -- Grant Edwards [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
=?utf-8?Q?Re:_Packt_published_an_article_about_xtopdf_=2D_creating_PDF_from_Plain=0A=09Text, _DBF, _CSV, _TDV, _and_XLS_Data?=
I'll be out of the office until approximately August 20th. If you have any questions, please email [EMAIL PROTECTED] -- David Wahler -- http://mail.python.org/mailman/listinfo/python-list
Re: Zope 3.3.0 beta 2 released!
I'll be out of the office until approximately August 20th. If you have any questions, please email [EMAIL PROTECTED] -- David Wahler -- http://mail.python.org/mailman/listinfo/python-list
Packt published an article about xtopdf - creating PDF from Plain Text, DBF, CSV, TDV, and XLS Data
Hi group, This is an article I wrote for Packt Publishing - http://www.packtpub.com : Using xtopdf, a PDF creation toolkit - http://www.packtpub.com/article/Using_xtopdf It shows how to use xtopdf - http://sourceforge.net/projects/xtopdf - to create PDF from plain text, DBF, CSV, TDV and XLS data. Use of both command-line and the GUI tools in xtopdf is covered. xtopdf is written in Python and requires the ReportLab toolkit. The GUI tools are written in wxPython - http://www.wxpython.org. Enjoy Vasudev Ram ~~ Software consulting and training http://www.dancingbison.com ~~ -- http://mail.python.org/mailman/listinfo/python-list
Re: write eof without closing
Marc 'BlackJack' Rintsch schreef: In [EMAIL PROTECTED], cage wrote: can i write a eof to a file descriptor without closing it? like: fd.write(EOF) or something What do you expect this to to? Writing a byte to the file and you don't know which value this byte has? Ciao, Marc 'BlackJack' Rintsch ok let me explain this a bit more... I want to use a program that has a 'pipe' mode, in which you can use stdin to send commands to the program. I found out that, when in pipe mode and you are using the keyboard as input source you can do Ctrl-D to 'signal' the program that you have finished typing your command. The program parses and then performs the command, and it doesn't quit. It quits after 'Quit\n' + Ctrl-D Now I want a python script to provide the input, how do i do that? I now use popen to be able to write to the program's stdin (p_stdin) I noticed that when i do a p_stdin.close() it acts as a 'ctrl-d' in that the program recognizes the signal to process the command, but then I cannot use p_stdin anymore to do p_stdin.write(...) grts, ruben -- http://mail.python.org/mailman/listinfo/python-list
Re: How to get the ascii code of Chinese characters?
In [EMAIL PROTECTED], many_years_after wrote: what I want to do is just to make numbers as people input some Chinese character(hanzi,i mean).The same character will create the same number.So I think ascii code can do this very well. No it can't. ASCII doesn't contain Chinese characters. http://en.wikipedia.org/wiki/ASCII Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list
Re: write eof without closing
can i write a eof to a file descriptor without closing it? No. Not on Windows, OS-X, or Unix. There is no such thing as an eof. On CP/M Ctrl-Z is used as EOF for text files. Common Dos/Window convention also uses ctrl+Z (0x1a) for EOF. c:\ copy con test.txt hello ^Z c:\ *nix usually uses ctrl+D (0x04) as an EOF signal...and OS-X being Unixish also uses the same. bash$ cat test.txt hello ^D bash$ Don't know about Macs earlier than OS-X. I don't know if there are problems (triggering an actual EOF and closing the file) writing either of these ascii characters in ascii/text mode (may vary between platforms?), but there are no problems writing either of these characters in binary mode. -tkc -- http://mail.python.org/mailman/listinfo/python-list
Re: tkinter btn visual state with tkMessageBox
[EMAIL PROTECTED] wrote: To: python-list@python.org | why is the button sunken when called through a bind method, and not | with the command attribute? | Thank you! | | | ## Cut'nPaste example | from Tkinter import * | import tkMessageBox | | class Vue(object): | def __init__(self): | self.root=Tk() | self.root.title(test button visual state) | self.b1=Button(self.root,text=tkMessageBox.showinfo with bind | :-() #,command=self.showMsg) | self.b1.bind(Button,self.showMsg) 8--- change this to : self.b1.bind(ButtonRelease,self.showMsg) Problem is that a button sinks in when you press it and springs back when you release it... and the Button leaves it sunken - because when you release, the control is no longer there - Hendrik -- http://mail.python.org/mailman/listinfo/python-list
Re: PyThreadState_Swap(NULL)
Jack Diederich wrote: On Fri, Aug 18, 2006 at 02:21:40PM -0700, Bryan wrote: i've written a program that uses python c api code that lives in a shared library that is loaded by a custom apache module (mod_xxx). this python c api code all works correctly under our test server and under apache but only if mod_python isn't loaded. when apache loads mod_python as shown in the http.conf snippet below, PyThreadState_Swap(NULL) in mod_xxx returns NULL. when the snippet of code in http.conf is commented out, it works again. what do i have to do to have mod_xxx code work correctly when apache loads mod_python? failure case when apache loads mod_python: Py_Initialize() succeeded PyThreadState_Swap(NULL) failed sucess case when apache doesn't load mod_python: Py_Initialize() succeeded PyThreadState_Swap(NULL) succeeded Running multiple python interpreters in the same process isn't supported. It works OK for most things but some low-level guts are shared between interpreters so it is possible to run into trouble. You aren't running multiple interpreters in the same process. You and mod_python both think you are in charge and end up nuking each other's states. Py_Initialize() resets the global state and shouldn't be called more than once. You can create more than one sub-interpreter (check out the mod_python source for how, the source is small and readable). The best thing to do would be to load your module last and conitionally call Py_Initialize() if someone else hasn't already. -Jack thanks for replying jack. i tested what you suggested. i put our module after mod_python, commented out Py_Initialize(), and Py_IsInitialized() returned True, but PyThreadState_Swap() failed. i put our module before mod_python, called Py_Initialize(), and Py_IsInitialized() returned True, but PyThreadState_Swap() failed. i removed mod_python and our module succeeded. i even tested combinations of calling and PyEval_InitThreads() but didn't work either. bryan -- http://mail.python.org/mailman/listinfo/python-list
Re: write eof without closing
cage wrote: I want to use a program that has a 'pipe' mode, in which you can use stdin to send commands to the program. I found out that, when in pipe mode and you are using the keyboard as input source you can do Ctrl-D to 'signal' the program that you have finished typing your command. The program parses and then performs the command, and it doesn't quit. It quits after 'Quit\n' + Ctrl-D Now I want a python script to provide the input, how do i do that? I now use popen to be able to write to the program's stdin (p_stdin) I noticed that when i do a p_stdin.close() it acts as a 'ctrl-d' in that the program recognizes the signal to process the command, but then I cannot use p_stdin anymore to do p_stdin.write(...) You might want to check the pty module in the Standard Library, and/or Pexpect (http://pexpect.sf.net/) -- http://mail.python.org/mailman/listinfo/python-list
Re: write eof without closing
cage schrieb: Marc 'BlackJack' Rintsch schreef: In [EMAIL PROTECTED], cage wrote: can i write a eof to a file descriptor without closing it? like: fd.write(EOF) or something What do you expect this to to? Writing a byte to the file and you don't know which value this byte has? Ciao, Marc 'BlackJack' Rintsch ok let me explain this a bit more... I want to use a program that has a 'pipe' mode, in which you can use stdin to send commands to the program. I found out that, when in pipe mode and you are using the keyboard as input source you can do Ctrl-D to 'signal' the program that you have finished typing your command. The program parses and then performs the command, and it doesn't quit. It quits after 'Quit\n' + Ctrl-D Now I want a python script to provide the input, how do i do that? I now use popen to be able to write to the program's stdin (p_stdin) I noticed that when i do a p_stdin.close() it acts as a 'ctrl-d' in that the program recognizes the signal to process the command, but then I cannot use p_stdin anymore to do p_stdin.write(...) According to wikipedia (german version, but I bet you can get that info using the english one, too) C-d sends EOT - end of transmission. Which is ascii 0x04. So I suggest you try writing \x04 to the pipe. Maybe that works. Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: write eof without closing
Writing the binary value for ^D into the stream will not do anything. That value signals the shell to close the stream, as such it only has significance when you're typing something into the shell. To the OP: writing an EOF to a stream without closing it makes no sense. EOF means just that--end of file. Once the program reaches an EOF, it can't read any more values from the stream, so keeping it open to write more stuff into it wouldn't even work. -- http://mail.python.org/mailman/listinfo/python-list
[ANN] clnum-1.3 Class Library For Numbers Python Binding
The clnum package adds rational numbers and arbitrary precision floating point numbers in real and complex form to Python. Also provides arbitrary precision floating point replacements for the functions in the math and cmath standard library modules. Home page: http://calcrpnpy.sourceforge.net/clnum.html Changes in 1.3 * Added combinatorial functions. * Improved the performance of converting very large Python longs. -- http://mail.python.org/mailman/listinfo/python-list
Re: write eof without closing
Actually, nevermind. It appears that receiving an EOF from a stream tells it when to stop 'reading', not necessarily that the stream is closed. What a weird behavior. -- http://mail.python.org/mailman/listinfo/python-list
how to use python com server in c++?
dear all,
i have a python com server like this:
import win32com.server.register
class HelloWorld:
_reg_clsid_ = {B0EB5AAB-0465-4D54-9CF9-04ADF7F73E4E}
_reg_desc_ = 'Python test com server'
_reg_progid_= Leojay.ComServer
_public_methods_= ['Add', 'Mul']
def Add(self, a, b):
return a+b
def Mul(self, a, b):
return a*b
if __name__ == '__main__':
win32com.server.register.UseCommandLine(HelloWorld)
after registering the com server, i can use it in visual basic .net:
Dim a As Integer = 5
Dim b As Integer = 8
Dim h As Object = CreateObject(Leojay.ComServer)
MsgBox(h.Add(a, b).ToString() + + h.Mul(a, b).ToString())
but i don't know how to use it in visual c++.
who has any idea about using this com server in viusal c++?
a detailed sample of early binding would be better, thanks.
--
Best Regards,
Leo Jay
--
http://mail.python.org/mailman/listinfo/python-list
[ANN] ratfun-2.3 Polynomials and Rational Functions
The ratfun module provides classes for defining polynomial and rational function (ratio of two polynomials) objects. These objects can be used in arithmetic expressions and evaluated at a particular point. Home page: http://calcrpnpy.sourceforge.net/ratfun.html Note: If you are using rpncalc-1.2 or later, this module is already included. This release is for folks who don't want rpncalc. Changes in 2.3 * Update the included clnum package. * Improved the formatting of the string representation of a polynomial. * Polynomial and rational function evaluation now works with array inputs. -- http://mail.python.org/mailman/listinfo/python-list
[ANN] rpncalc-2.4 RPN Calculator for Python
The rpncalc package adds an interactive Reverse Polish Notation (RPN) interpreter to Python. This interpreter allows the use of Python as an RPN calculator. You can easily switch between the RPN interpreter and the standard Python interpreter. Home page: http://calcrpnpy.sourceforge.net/ Changes in 2.4 * Update the included clnum package. * Added combinatorial functions. -- http://mail.python.org/mailman/listinfo/python-list
Re: How to get the ascii code of Chinese characters?
* many_years_after (2006-08-19 12:18 +0100) Hi,everyone: Have you any ideas? Say whatever you know about this. contradictio in adiecto -- http://mail.python.org/mailman/listinfo/python-list
Re: text editor suggestion?
* John Salerno (2006-08-19 02:20 +0100) Ok, I know it's been asked a million times, but I have a more specific question so hopefully this won't be just the same old post. I've tried a few different editors, and I really like UltraEdit, but it's Windows-only and I'm working more on Linux nowadays. Here are my criteria: 1. syntax highlighting (highly customizable) 2. auto/smart indenting 3. ability to run script 4. light-weight text editor, not an IDE 5. cross-platform (not really necessary, but nice) EditPad Pro - runs perfectly under Wine http://www.editpadpro.com/convenience.html http://www.editpadpro.com/wine.html -- http://mail.python.org/mailman/listinfo/python-list
Re: PyThreadState_Swap(NULL)
On Sat, Aug 19, 2006 at 09:08:21AM -0700, Bryan wrote: Jack Diederich wrote: On Fri, Aug 18, 2006 at 02:21:40PM -0700, Bryan wrote: i've written a program that uses python c api code that lives in a shared library that is loaded by a custom apache module (mod_xxx). this python c api code all works correctly under our test server and under apache but only if mod_python isn't loaded. when apache loads mod_python as shown in the http.conf snippet below, PyThreadState_Swap(NULL) in mod_xxx returns NULL. when the snippet of code in http.conf is commented out, it works again. what do i have to do to have mod_xxx code work correctly when apache loads mod_python? failure case when apache loads mod_python: Py_Initialize() succeeded PyThreadState_Swap(NULL) failed sucess case when apache doesn't load mod_python: Py_Initialize() succeeded PyThreadState_Swap(NULL) succeeded Running multiple python interpreters in the same process isn't supported. It works OK for most things but some low-level guts are shared between interpreters so it is possible to run into trouble. You aren't running multiple interpreters in the same process. You and mod_python both think you are in charge and end up nuking each other's states. Py_Initialize() resets the global state and shouldn't be called more than once. You can create more than one sub-interpreter (check out the mod_python source for how, the source is small and readable). The best thing to do would be to load your module last and conitionally call Py_Initialize() if someone else hasn't already. -Jack thanks for replying jack. i tested what you suggested. i put our module after mod_python, commented out Py_Initialize(), and Py_IsInitialized() returned True, but PyThreadState_Swap() failed. i put our module before mod_python, called Py_Initialize(), and Py_IsInitialized() returned True, but PyThreadState_Swap() failed. i removed mod_python and our module succeeded. i even tested combinations of calling and PyEval_InitThreads() but didn't work either. I'm out of my depth here, I only know that this kind of thing is tricky. I think you need to explicitly spawn a new sub-interpreter or at least a new thread state from the existing interpreter. Your best bet is to ask on the mod_python mailing list. Those guys actually do this kind of thing so if you are going to get good advice it will be from them. -Jack -- http://mail.python.org/mailman/listinfo/python-list
Re: write eof without closing
cage wrote: hello can i write a eof to a file descriptor without closing it? like: fd.write(EOF) or something grts, ruben No but there is an EOF to the file anyway, even if it is open. I recall under MS-DOS, you could create a file of size N without writing to it (some INT21 or 9 ? call to modify the FAT) ... not really possible anymore. Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: How to get the ascii code of Chinese characters?
On 2006-08-19 12:42:31, Marc 'BlackJack' Rintsch wrote: many_years_after wrote: what I want to do is just to make numbers as people input some Chinese character(hanzi,i mean).The same character will create the same number.So I think ascii code can do this very well. No it can't. ASCII doesn't contain Chinese characters. Well, ASCII can represent the Unicode numerically -- if that is what the OP wants. For example, U+81EC (all ASCII) is one possible -- not very readable though g -- representation of a Hanzi character (see http://www.cojak.org/index.php?function=code_lookupterm=81EC). (I don't know anything about Hanzi or Mandarin... But that's Unicode, so this works :) Gerhard -- http://mail.python.org/mailman/listinfo/python-list
Re: sending values over classes
Rafał Janas [EMAIL PROTECTED] writes: Hi, How to read/write value over different classes (in different files) Something like global values? You need to be more specific about what exactly you're trying to accomplish. Some code whould be great. Maybe import statement is what you're looking for. You can import a class from another module (file) to current module (file) and use it. BTW on pl.comp.lang.python you can meet helpful people too :) -- HTH, Rob -- http://mail.python.org/mailman/listinfo/python-list
Re: Optimizing Inner Loop Copy
Mark E. Fenner wrote: Paul McGuire wrote: Mark E. Fenner [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] Hello all, snip Here's my class of the objects being copied: class Rule(list): def __init__(self, lhs=None, rhs=None, nClasses=0, nCases=0): self.nClasses = nClasses self.nCases = nCases Ok, so here are some bigger picture kind of questions. 1. Do you need to construct all these Rule objects in the first place? Sorry, I had a nice response written out ... and I lost it. Here's the summary. Unfortunately, yes, the algorithm this code implements goes to great lengths to ensure that each possible Rule is generated only once. 2. More of an OO question than a performance question, but why does Rule inherit from list in the first place? Is Rule *really* a list, or is it just implemented using a list? It is the later. And it is a moderate abuse to say that the Rule _isa_ list. Aside from the two integer statistics (nClasses, nCounts), the RHS and LHS can be merged and we can say that the rule is [(tuple1), ..., (tupleN), (tupleRHS)] with the RHS being Rule[-1]. However, in that case, I went for OO principles and kept the two logical parts separate. B/c of the frequency of list operations, it's better to be able to use thisRule.append() or thisRule[i] then thisRule.lhs.append() or thisRule.lhs[i]. Where speed doesn't matter, I have the more appropriate thisRule.addLHS(). Yes, I could do dot removal (i.e., localize the attribute lookups), but when we iterate over a whole set of Rules, this still leave the localization assignment inside an inner loop. Then maybe you can assign an unbound method (eg, append = list.append), then pass in your instance as the first argument (eg append( myList, newElement )). Even if you localize a bound method, it should save some time, no? If the latter, then you might look at moving Rule's list contents into an instance variable, maybe something called self.contents. Then you can be more explicit about appending to self.contents when you want to add lhs to the contents of the Rule. For example, why are you calling extend, instead of just using slice notation to copy lhs? Ah, because then you would have to write something like self = lhs[:], which doesn't look like it will work very well. On the other hand, if you use containment/delegation instead of inheritance, you can use the more explicit self.contents = lhs[:]. In fact now you have much more control over the assemblage of rules from other rules. Fortunately, the Rules are only assembled in one way ... appending to that copy that started the thread. Incidentally, by speeding up Rule.__init__ and inlining it (instead of calling Rule.copy which called Rule.__init__), that is no longer my bottleneck *phew*. In the original post, you state: the left hand side of a rule (e.g., a rule is a b c - d) is self and three other pieces of information are kept around, two ints and a right hand side What other aspects of list are you using in Rule? Are you iterating over its contents somewhere? Then implement __iter__ and return iter(self.contents). Are you using if rule1: and implicitly testing if its length is nonzero? Then implement __nonzero__ and return operator.truth(self.contents). Do you want to build up rules incrementally using += operator? Then implement __iadd__ and do self.contents.extend(other.contents), or self.contents += other.contents[:] (no need to test for None-ness of other.contents, we ensure in our constructor that self.contents is always a list, even if its an empty one). Well, I do several of these things ... many of them inside inner loops (there's a sequence of inner loops ... the algorithms choice, not mine). Each of these that are implemented (and not left to Python's builtin list methods), is an extra level of function call overhead. This has been a secondary project for me over a number of years ... so I have to look at my early revisions, but I think my original architecture was an explicit self.lhs = [] attribute. And it was REALLY slow. When Python allowed inheritence from builtin objects, I tried it and got a nice win (I think!). Save inheritance for the true is-a relationships among your problem domain classes. For instance, define a base Rule class, and then you can extend it with things like DeterministicRule, ProbabilisticRule, ArbitraryRule, etc. But don't confuse is-implemented-using-a with is-a. Well, I know the difference and choose to break the rule intentionally *chuckle*. After the initial prototype, speed trumped OO. -- Paul Thanks for your comments, Paul. Regards, Mark -- http://mail.python.org/mailman/listinfo/python-list
How to catch these kind of bugs in Python?
Is there anyway to catch the following type of bug in Python code: message = 'This is a message' # some code # some more code if some_obscure_condition: nessage = 'Some obscure condition occured.' # yet more code # still more code print message In the above example, message should be set to 'Some obscure condition occured.' if some_obscure_condition is True. But due to a lack of sleep, and possibly even being drunk, the programmer has mistyped message. These types of bugs would easily be caught in languages that have a specific keyword or syntax for declaring variables before use. I'm still fairly new to using Python on a more than casual basis, so I don't know if Python has anyway to help me out here. -- Arcadio -- http://mail.python.org/mailman/listinfo/python-list
Re: sending values over classes
Hi, Exactly I want to set global value (like session - who is log in) I writing simple program with more than one class - every window has different class in different file. Example: 2 files (main and wind). Main is main window and wind is child window. I want to send value from main to child from entry to entry and I know how to do it But I can't send value from child to main. My main.py #!/usr/bin/env python #-- # main.py # Dave Reed # 08/19/2006 #-- import sys import wind from GladeWindow import * global dupa #-- class Main(GladeWindow): #-- def __init__(self): ''' ''' self.init() #-- def init(self): filename = 'main.glade' widget_list = [ 'pokoj', 'entry1', 'button1', ] handlers = [ 'on_button1_clicked', ] top_window = 'pokoj' GladeWindow.__init__(self, filename, top_window, widget_list, handlers) #-- def on_button1_clicked(self, *args): #self.wind=wind.Wind(self) #self.wind.top_window='win1' #self.wind.show() dupa='test123' b=wind.Wind() b.show() #-- def main(argv): w = Main() w.show() gtk.main() #-- if __name__ == '__main__': main(sys.argv) And wind.py #!/usr/bin/env python #-- # wind.py # Dave Reed # 08/19/2006 #-- import sys #import main from GladeWindow import * #-- class Wind(GladeWindow): #-- def __init__(self): ''' ''' #self.main=main self.init() #-- def init(self): filename = 'wind.glade' widget_list = [ 'win1', 'entry1', 'button1', ] handlers = [ 'on_button1_clicked', ] top_window = 'win1' GladeWindow.__init__(self, filename, top_window, widget_list, handlers) #-- def on_button1_clicked(self, *args): #self.main.widgets['entry1'].set_text(self.widgets['entry1'].get_text()) self.widgets['entry1'].set_text(dupa) #-- def main(argv): w = Wind() w.show() gtk.main() #-- if __name__ == '__main__': main(sys.argv) Rafał -- http://mail.python.org/mailman/listinfo/python-list
Re: How to catch these kind of bugs in Python?
asincero [EMAIL PROTECTED] writes: In the above example, message should be set to 'Some obscure condition occured.' if some_obscure_condition is True. But due to a lack of sleep, and possibly even being drunk, the programmer has mistyped message. These types of bugs would easily be caught in languages that have a specific keyword or syntax for declaring variables before use. I'm still fairly new to using Python on a more than casual basis, so I don't know if Python has anyway to help me out here. Unit testing, running pylint, pychecker, etc. -- Jorge Godoy [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
Re: How to catch these kind of bugs in Python?
asincero wrote: Is there anyway to catch the following type of bug in Python code: message = 'This is a message' if some_obscure_condition: nessage = 'Some obscure condition occured.' print message In the above example, message should be set to 'Some obscure condition occured.' if some_obscure_condition is True. But due to a lack of sleep, and possibly even being drunk, the programmer has mistyped message. These types of bugs would easily be caught in languages that have a specific keyword or syntax for declaring variables before use. There are tools that help (e.g. pychecker), but there are a few things to consider: 1) If the programmer is sleepy/drunk, you're going to have other bugs too (logical errors, not handling all cases, etc.) 2) Other languages would catch *some* types of these bugs, but would still miss some of them (I can see a sleepy programmer also using the wrong variable instead of just mistyping the right one). So while a tool might assist, it's worth your while to also consider some strategies for tackling the above two problems and, in the process, the sleepy-programmer-mistype bugs will get caught as well. Some type of testing is probably the best answer - be it reusable unit tests or, at the very least, some interactive testing of code snippets (which Python makes really easy to do). -Dave -- http://mail.python.org/mailman/listinfo/python-list
Embedding python: GCC gives errors of undefined reference to Py_* functions.
Hey! I am trying to embedd python into a C programe of mine. But when I try to compile the C code, gcc gives errors like undefined reference to `Py_Finalize' and the same kind for all the other functions. I have incuded Python.h. Any idea what might be wrong? Thanks. -- http://mail.python.org/mailman/listinfo/python-list
install patch on windows
Does anyone know how to install a patch on Winodws? For example, I want to install the patch 'ocmalloc-free-arenas.diff' in Python 2.3. thanks... -- http://mail.python.org/mailman/listinfo/python-list
Google groups api
Hello, Is there any module for searching google groups, something like PyGoogle ? Thank you in advance, Efi -- http://mail.python.org/mailman/listinfo/python-list
Stopping all threads from other thread
Hello, it is possible to stop all threads (application) from thread of application: App |-MainThread |-WebServer |-CmdListener # From this I want to stop App The sys.exit isn't working... Amadeusz Jasak (Poland) -- http://mail.python.org/mailman/listinfo/python-list
Re: Embedding python: GCC gives errors of undefined reference to Py_* functions.
OK, I am not ashamed to admit that I am ashamed as I didn't search the group for my problem before posting it yet again. The solution was right there. I have link in my libpython2.4.so while compiling. $gcc -I/usr/include/python2.4/ -lpython2.4 -o foo foo.c Shuaib wrote: Hey! I am trying to embedd python into a C programe of mine. But when I try to compile the C code, gcc gives errors like undefined reference to `Py_Finalize' and the same kind for all the other functions. I have incuded Python.h. Any idea what might be wrong? Thanks. -- http://mail.python.org/mailman/listinfo/python-list
Re: install patch on windows
djoefish wrote: Does anyone know how to install a patch on Winodws? For example, I want to install the patch 'ocmalloc-free-arenas.diff' in Python 2.3. You can get patch (and quite a lot besides) for win32 from the UnxUtils project: http://sourceforge.net/projects/unxutils TJG -- http://mail.python.org/mailman/listinfo/python-list
Re: ratfun-2.3 Polynomials and Rational Functions
Are there any differences between this module and the one already present in numpy? http://www.scipy.org/doc/numpy_api_docs/numpy.lib.polynomial.html Cheers, Bas -- http://mail.python.org/mailman/listinfo/python-list
Re: install patch on windows
Tim Golden wrote: djoefish wrote: Does anyone know how to install a patch on Winodws? For example, I want to install the patch 'ocmalloc-free-arenas.diff' in Python 2.3. You can get patch (and quite a lot besides) for win32 from the UnxUtils project: http://sourceforge.net/projects/unxutils TJG Thanks, but that project seems to be dead -- http://mail.python.org/mailman/listinfo/python-list
Re: install patch on windows
djoefish [EMAIL PROTECTED] writes: Tim Golden wrote: djoefish wrote: Does anyone know how to install a patch on Winodws? For example, I want to install the patch 'ocmalloc-free-arenas.diff' in Python 2.3. You can get patch (and quite a lot besides) for win32 from the UnxUtils project: http://sourceforge.net/projects/unxutils TJG Thanks, but that project seems to be dead The files there didn't work? -- Jorge Godoy [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
Python complaining about CherryPY?
Hi all,
First post to the list, so first off, I'm new to Python and everything
surrounding it so if you can please ignore my ignorance.
I setup a cherryPY server so that I could use sabnzbd but once, I have
installed/configured what I was told by the tutorials and everything else.
I run ubuntu x86 dapper FYI.
The error messages I get from the logs are as follows (which don't really
mean to muchto me):
19/Aug/2006:20:55:33 HTTP INFO Traceback (most recent call last):
File /usr/lib/python2.4/site-packages/cherrypy/_cphttptools.py, line
110, in _run
applyFilters('before_finalize')
File /usr/lib/python2.4/site-packages/cherrypy/filters/__init__.py,
line 151, in applyFilters
method()
File
/home/tam/www/sites/domain1/htdocs/SABnzbd/sabnzbd/utils/multiauth/filter.py,
line 59, in beforeFinalize
cherrypy.response.body = rsrc.callable(rsrc.instance,
File /home/tam/www/sites/domain1/htdocs/SABnzbd/sabnzbd/interface.py,
line 116, in index
info, pnfo_list, bytespersec = build_header()
File /home/tam/www/sites/domain1/htdocs/SABnzbd/sabnzbd/interface.py,
line 933, in build_header
header = { 'version':sabnzbd.__version__, 'paused':sabnzbd.paused(),
File /home/tam/www/sites/domain1/htdocs/SABnzbd/sabnzbd/__init__.py,
line 753, in paused
return DOWNLOADER.paused
AttributeError: 'NoneType' object has no attribute 'paused'
127.0.0.1 - - [19/Aug/2006:20:55:33] POST /sabnzbd/ HTTP/1.1 500 791
http://localhost:8080/sabnzbd/; Mozilla/5.0 (X11; U; Linux i686; en-US;
rv:1.8.0.4) Gecko/20060608 Ubuntu/dapper-security Firefox/1.5.0.4
So if anyone can shed some light on this I would be very greatful.
Thanks for your time.
Tam.
--
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Embedding python: Segmentation Fault
Hi! I am trying to embed python into a C programe of mine. When the execution reaches the following line pModule = PyImport_Import(pName); It causes a Segmentation Fault Error. pModule is of type PyObject *, so is pName. What could be the possible reasons for the error? Thanks for your time. -- http://mail.python.org/mailman/listinfo/python-list
Re: install patch on windows
Jorge Godoy wrote: djoefish [EMAIL PROTECTED] writes: Tim Golden wrote: djoefish wrote: Does anyone know how to install a patch on Winodws? For example, I want to install the patch 'ocmalloc-free-arenas.diff' in Python 2.3. You can get patch (and quite a lot besides) for win32 from the UnxUtils project: http://sourceforge.net/projects/unxutils TJG Thanks, but that project seems to be dead The files there didn't work? -- Jorge Godoy [EMAIL PROTECTED] not exactly...there are NO files there. Butfrom the forums I found out about GNUWin32, which has a 'patch' program for windows. I amd trying it now to see if it works. -- http://mail.python.org/mailman/listinfo/python-list
Re: How to get the ascii code of Chinese characters?
Gerhard Fiedler wrote:
Well, ASCII can represent the Unicode numerically -- if that is what the OP
wants.
No. ASCII characters range is 0..127 while Unicode characters range is
at least 0..65535.
For example, U+81EC (all ASCII) is one possible -- not very
readable though g -- representation of a Hanzi character (see
http://www.cojak.org/index.php?function=code_lookupterm=81EC).
U+81EC means a Unicode character which is represented by the number
0x81EC. There are some encodings defined which map Unicode sequences
to byte sequences: UTF-8 maps Unicode strings to sequences of bytes in
the range 0..255, UTF-7 maps Unicode strings to sequences of bytes in
the range 0..127. You *could* read the latter as ASCII sequences
but this is not correct.
How to do it in Python? Let chinesePhrase be a Unicode string with
Chinese content. Then
chinesePhrase_7bit = chinesePhrase.encode('utf-7')
will produce a sequences of bytes in the range 0..127 representing
chinesePhrase and *looking like* a (meaningless) ASCII sequence.
chinesePhrase_16bit = chinesePhrase.encode('utf-16be')
will produce a sequence with Unicode numbers packed in a byte
string in big endian order. This is probably closest to what
the OP wants.
Peter Maas, Aachen
--
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Re: How to get the ascii code of Chinese characters?
many_years_after wrote: John Machin wrote: many_years_after wrote: Hi,everyone: Have you any ideas? Say whatever you know about this. Perhaps you had better explain what you mean by ascii code of Chinese characters. Chinese characters (hanzi) can be represented in many ways on a computer, in Unicode as well as many different legacy encodings, such as GB, GBK, big5, two different 4-digit telegraph codes, etc etc. They can also be spelled out in roman letters with or without tone indications (digits or accents) in the pinyin system -- is that what you mean by ascii code? Perhaps you might like to tell us what you want to do in Python with hanzi and ascii codes, so that we can give you a specific answer. With examples, please -- like what are the ascii codes for the two characters in the common greeting that comes across in toneless pinyin as ni hao? Cheers, John hi: what I want to do is just to make numbers as people input some Chinese character(hanzi,i mean).The same character will create the same number.So I think ascii code can do this very well. *What* characters make *what* numbers? Stop thinking and give us some *examples* -- http://mail.python.org/mailman/listinfo/python-list
Re: How to get the ascii code of Chinese characters?
On 2006-08-19 16:54:36, Peter Maas wrote:
Gerhard Fiedler wrote:
Well, ASCII can represent the Unicode numerically -- if that is what the OP
wants.
No. ASCII characters range is 0..127 while Unicode characters range is
at least 0..65535.
Actually, Unicode goes beyond 65535. But right in this sentence, you
represented the number 65535 with ASCII characters, so it doesn't seem to
be impossible.
For example, U+81EC (all ASCII) is one possible -- not very
readable though g -- representation of a Hanzi character (see
http://www.cojak.org/index.php?function=code_lookupterm=81EC).
U+81EC means a Unicode character which is represented by the number
0x81EC.
Exactly. Both versions represented in ASCII right in your message :)
UTF-8 maps Unicode strings to sequences of bytes in the range 0..255,
UTF-7 maps Unicode strings to sequences of bytes in the range 0..127.
You *could* read the latter as ASCII sequences but this is not correct.
Of course not correct. I guess the only correct representation is the
original Chinese character. But the OP doesn't seem to want this... so a
non-correct representation is necessary anyway.
How to do it in Python? Let chinesePhrase be a Unicode string with
Chinese content. Then
chinesePhrase_7bit = chinesePhrase.encode('utf-7')
will produce a sequences of bytes in the range 0..127 representing
chinesePhrase and *looking like* a (meaningless) ASCII sequence.
Actually, no. There are quite a few code positions in the range 0..127 that
don't look like anything (non-printable). And, as you say, this is rather
meaningless.
chinesePhrase_16bit = chinesePhrase.encode('utf-16be')
will produce a sequence with Unicode numbers packed in a byte
string in big endian order. This is probably closest to what
the OP wants.
That's what you think... but it's not really ASCII. If you want this in
ASCII, and readable, I still suggest to transform this sequence of 2-byte
values (for Chinese characters it will be 2 bytes per character) into a
sequence of something like U+81EC (or 0x81EC if you are a C fan or 81EC if
you can imply the rest)... that's where we come back to my original
suggestion :)
Gerhard
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Re: Documenting a package with Pydoc
Gabriel Genellina wrote: At Friday 18/8/2006 11:45, Rob Cowie wrote: Pydoc seems to be capable of writing documentation for all modules within a package by simply pointing it to the package on the command line... pydoc -w packagename_without_/ Certainly, the method writedocs() appears to descend into a directory and create docs for each importable object. Perhaps I'm doing something wrong but when I do this, pydoc reports that no Python documentation can be found for each of the contents of the package. Of course, if I point pydoc directly to the modules, it succeeds. Am I doing something wrong? That appears to be a bug. In pydoc.writedocs, when iterating over the package directory contents, it uses inspect.getmodulename(path). That returns the bare filename (without path nor extension) (is it ok???), and later the resolve() function can't load the module because it lacks package information. I don't think this is a bug; inspect.getmodulename(path) does indeed return a bare filename, but this is later augmented with the pkgpath. I also can't find a resolve() function. Perhaps we have different versions? I have revision 1.38. For simple cases this patch may work: In writedocs, add the following line at the beginning: if pkgpath=='' and ispackage(dir): pkgpath = os.path.basename(dir) + '.' This works for top level packages located at sys.path, but not for packages located elsewhere. By example, I can generate now the docs for pychart: python c:\apps\python\lib\pydoc.py -w c:\apps\python\lib\site-packages\pychart Gabriel Genellina Softlab SRL Thanks, Rob C __ Preguntá. Respondé. Descubrí. Todo lo que querías saber, y lo que ni imaginabas, está en Yahoo! Respuestas (Beta). ¡Probalo ya! http://www.yahoo.com.ar/respuestas -- http://mail.python.org/mailman/listinfo/python-list
Re: How to get the ascii code of Chinese characters?
many_years_after wrote: hi: what I want to do is just to make numbers as people input some Chinese character(hanzi,i mean).The same character will create the same number.So I think ascii code can do this very well. Possibly you have create upside-down. Could you possibly be talking about an input method, in which people type in ascii letters (and maybe numbers) and the *result* is a Chinese character? In other words, what *everybody* uses to input Chinese characters? Perhaps you could ask on the Chinese Python newsgroup. *GIVE* *EXAMPLES* of what you want to do. -- http://mail.python.org/mailman/listinfo/python-list
streaming audio with standard modules?
I am running Python 2.3 on Linux. I am trying to write a program to simulate a hardware mixer to play theatrical sound cues. I need to be able to play multiple sound channels at once, controlling volume by channel as well as globally. I also need to be able to pan a channel through left and right speakers. I would prefer if the sound files could be ogg, mp3, or wav, and if they could be streamed, instead of having to load each file completely before playing it. I have been using pygame.mixer and pygame.mixer.music, but pygame.mixer is not streaming, and pygame.mixer.music has only a single channel. Is there a way to do any reasonable amount of what I am looking for with standard modules? If not, is there a module(s) that I can download somewhere that will do the trick? Marc [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
Re: timezones and time_t
Thanks for the reply. Unfortunately, a simple +offset type solution isn't really accurate enough for the kind of scenario I'm looking at. I'm often dealing with different timezones with DST changeovers on different dates or even different times of day! So I need industrial-strength timezone handling! Wrt your naming conventions... sorry, I'm a newbie to Python so not really qualified to comment. But what's a PEP? -- http://mail.python.org/mailman/listinfo/python-list
Re: ratfun-2.3 Polynomials and Rational Functions
Bas wrote: Are there any differences between this module and the one already present in numpy? http://www.scipy.org/doc/numpy_api_docs/numpy.lib.polynomial.html Cheers, Bas Yes, there are quite a few. This module uses a multi-precision library (clnum) to make the calculations more precise. This makes the root finder significantly more precise. There is an example in the user manual that shows the difference in performance between Numeric (essentially the same code as in numpy) and the ratfun root finder on an ill-conditioned polynomial. If you choose to use exact coefficients (integers and rationals) then all calculations except for root finding are exact. Unlike the numpy implementation, arithmetic (+-*/**) uses the standard Python operators instead of requiring you to call functions. Ray -- http://mail.python.org/mailman/listinfo/python-list
trouble using \ as a string
Hi there... I'm still pretty new to turbogears. but i have gotten pretty familiar with it i'm just trying to clear something up, i'm having a difficult time using \ when declaring a string expression such as tempname=\..it says that the line is single qouted. i want this because using python I am pulling in filenames from a mac..thus they are / in the pathways..and i want to .split it at the / to obtain the filename at the end...but its proving diffucult with this obstacle in the way. Why is this happening?? -- http://mail.python.org/mailman/listinfo/python-list
Re: couple more questions about sqlite
Joel Rosdahl wrote: John Salerno [EMAIL PROTECTED] writes: What is really confusing is that I did a search for 'sqlite' in my Ubuntu repositories and it came up with entries like this: python2.4-pysqlite1.1 python interface to SQLite 3 python2.4-pysqlite2 python interface to SQLite 3 python2.4-pysqlite python interface to SQLite 2 That's python2.4-sqlite, not python2.4-pysqlite. The reason for both having pythonX.Y-foo and python-foo packages is Debian's (and therefore Ubuntu's) Python package policy. python-pysqlite1.1 python interface to SQLite 3 python-pysqlite2python interface to SQLite 3 python-sqlite python interface to SQlite 2 Needless to say, the numbering had me banging my head against my desk. Sorry to hear that, and I can understand that the names are a bit confusing. Here's the story behind the mess: In the beginning (well, at least in 2003 when I found out about SQLite), SQLite was up to version 2.something and the Python module was called sqlite.py. While the Python module *project* was called pysqlite 0.something, Debian modules were generally called python-foo when providing the module foo; hence the name python-sqlite. Then, SQLite 3 was released (incompatible with SQLite 2 databases), and pysqlite 1.1 was released with the same module name (sqlite.py) and API as the old sqlite.py module but linked against SQLite 3. I decided not to package that version but instead wait for pysqlite 2, a rewritten and improved version linked against SQLite 3 and with a new Python API. pysqlite 2 was released and the Python module was called pysqlite2.dbapi2. I didn't think python-sqlite3 would be a good name for the Debian package since there were actually two different pysqlite versions (both actively maintained) linked against SQLite3, so I ended up calling the package python-pysqlite2, following the name and version of the pysqlite project instead of the module. Finally, by request of Debian users, I also packaged the other pysqlite version linked against SQLite 3 giving the package python-pysqlite1.1. Oh, and then there's python-apsw too. :-) Regards, Joel (maintainer of Debian's Python-related sqlite packages) Yikes! Well at least it gets simpler when 2.5 is released with the module built-in! :) -- http://mail.python.org/mailman/listinfo/python-list
Re: text editor suggestion?
Sybren Stuvel wrote: John Salerno enlightened us with: I'd really like to learn vim, but I spent days just trying to figure out how to get the syntax highlighting and indentation working, where these settings are and how to edit them Stop being a man and just ask for directions :) Oh don't worry, I have no shame. I was asking a ton of questions, yet I still couldn't figure it out. It just feels so insurmountable that I can't even start working with it yet because I don't know how to tailor the settings. vim ~/.vimrc is all you need on any system but Windows. There IIRC you need to edit C:\Program Files\VIM\_vimrc. But what about customizing syntax coloring? Is this also in the same file? I've noticed a separate file called python.vim (in Windows, this file exists in a 'syntax' folder, and also another file of the same name in an 'indent' folder, so I'm *still* confused about which files are used for which settings. -- http://mail.python.org/mailman/listinfo/python-list
Re: text editor suggestion?
milosz wrote: Did you try gedit? It has an options, which you need, I think. Regards. Yes, I tried it and it's alright, but it doesn't support smart indentation or much customizing of syntax highlighting (i.e. you can change the color of functions, but you can't define what a 'function' is, or at least I have no idea where this can be done). It seems like what most editors do is highlight user-defined functions as they are defined, so: def func() 'func' would be highlighted here, but not when you call it elsewhere in your script. Furthermore, there isn't support for built-in Python functions and methods. The thing I liked about UltraEdit is that you can define your own groups of words and put whatever words you want in there, so my file had a group called '__builtins__' and it listed all the Python built-in methods, and those would be highlighted. Most editors I see don't seem to allow this...they just figure out what a function or method is on their own somehow. -- http://mail.python.org/mailman/listinfo/python-list
Re: trouble using \ as a string
Try using: tempname = \\ Jim OriginalBrownster wrote: Hi there... I'm still pretty new to turbogears. but i have gotten pretty familiar with it i'm just trying to clear something up, i'm having a difficult time using \ when declaring a string expression such as tempname=\..it says that the line is single qouted. i want this because using python I am pulling in filenames from a mac..thus they are / in the pathways..and i want to .split it at the / to obtain the filename at the end...but its proving diffucult with this obstacle in the way. Why is this happening?? -- http://mail.python.org/mailman/listinfo/python-list
Re: How to catch these kind of bugs in Python?
asincero wrote: Is there anyway to catch the following type of bug in Python code: message = 'This is a message' # some code # some more code if some_obscure_condition: nessage = 'Some obscure condition occured.' # yet more code # still more code print message In the above example, message should be set to 'Some obscure condition occured.' if some_obscure_condition is True. But due to a lack of sleep, and possibly even being drunk, the programmer has mistyped message. These types of bugs would easily be caught in languages that have a specific keyword or syntax for declaring variables before use. I'm still fairly new to using Python on a more than casual basis, so I don't know if Python has anyway to help me out here. The keyword is obscure condition. The solution is to use a coverage tool and create unit tests that give you 100% code coverage. -- http://mail.python.org/mailman/listinfo/python-list
Re: sum and strings
Bill Pursell wrote: Georg Brandl wrote: Paul Rubin wrote: Sybren Stuvel [EMAIL PROTECTED] writes: Because of there should only be one way to do it, and that way should be obvious. There are already the str.join and unicode.join methods, Those are obvious??? Why would you try to sum up strings? Besides, the ''.join idiom is quite common in Python. One could extend this argument to dissallow the following: foo + bar Fortunately, hypergeneralization is not one of Python's weaknesses. Georg -- http://mail.python.org/mailman/listinfo/python-list
Re: how to use python com server in c++?
Leo Jay wrote:
dear all,
i have a python com server like this:
import win32com.server.register
class HelloWorld:
_reg_clsid_ = {B0EB5AAB-0465-4D54-9CF9-04ADF7F73E4E}
_reg_desc_ = 'Python test com server'
_reg_progid_= Leojay.ComServer
_public_methods_= ['Add', 'Mul']
def Add(self, a, b):
return a+b
def Mul(self, a, b):
return a*b
if __name__ == '__main__':
win32com.server.register.UseCommandLine(HelloWorld)
after registering the com server, i can use it in visual basic .net:
Dim a As Integer = 5
Dim b As Integer = 8
Dim h As Object = CreateObject(Leojay.ComServer)
MsgBox(h.Add(a, b).ToString() + + h.Mul(a, b).ToString())
but i don't know how to use it in visual c++.
who has any idea about using this com server in viusal c++?
a detailed sample of early binding would be better, thanks.
too complicated for my brain. Waiting for a good answer.
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Re: Questions on unittest behaviour
Collin Winter wrote:
While working on a test suite for unittest these past few weeks, I've
run across some behaviours that, while not obviously wrong, don't
strike me as quite right, either. Submitted for your consideration:
1) TestCase.tearDown() is only run if TestCase.setUp() succeeded. It
seems to me that tearDown() should always be run, regardless of any
failures in setUp() or the test method itself.
I'm undecided if this is a new feature (so it should go in for 2.6) or
a bug fix; I'm leaning toward the latter.
I strongly disagree. First, this is the documented behavior
for all xUnit ports (see jUnit), second, it's the responsibility
of a routine to clean up for itself.
2) The TestLoader.testMethodPrefix attribute currently allows anything
to be assigned to it, including invalid objects and the empty string.
While the former will cause errors to be raised when one of
TestLoader's loadTestsFrom*() methods is called, the empty string will
raise no exception; rather, the loadTestsFrom*() methods will
interpret every possible attribute as being a test method, e.g.,
meaning you get things like assertEqual(), failUnlessEqual(), etc,
when TestLoader.loadTestsFromTestCase() is run.
I propose protecting testMethodPrefix with a property that validates
the assigned value, restricting input to non-empty instances of str. I
see this as a bug fix that should go in before 2.5-final.
Several points. First, since it's been this way since day one and
nobody has complained, it's not a bug. That means it's a feature,
and 2.5 is in a complete, absolute, utter, total and thorough
feature freeze. This is not the place to get Guido's attention. As
far as I'm aware, he doesn't read this newsgroup.
On the other hand, you might be working with the crew on
pythondev; I only read the summaries. If you are, then you
already know what I mentioned above. If you aren't, your
odds of getting a new test suite into 2.5 final are somewhere
on the far side of zero.
3) TestLoader.loadTestsFromTestCase() accepts objects that are not
test cases and will happily look for appropriately-named methods on
any object you give it. This flexibility should be documented, or
proper input validation should be done (a bug fix for 2.5).
I'm pretty sure I use this. Making it go away would cause
me to have to find another way around the misbegotten
prefix selection mechanism. There's a lot of discussion
around something that's called behavior driven development
which is neither here nor there other than that group of people
considers the whole notion of a name with a fixed element to
be a problem with constructing really meaningful test names.
4) TestLoader.loadTestsFromName() (and by extension,
loadTestsFromNames(), too) raises an AttributeError if the name is the
empty string because -- as it correctly asserts -- the object does not
contain an attribute named ''. I recommend that this be tested for and
ValueError be raised (bug fix for 2.5).
Prior point about 2.5 being in a freeze. Take it to the pythondev
mailing list if you really want action. As far as I'm concerned,
this is a so what. There are much deeper issues with unittest
than this.
This of course leads into the question of how much input validation
should be done on these names. Should loadTestsFrom{Name,Names}() make
sure the names are valid attribute names, or is this overkill?
What _I_ want is a method of selecting tests from a class
that doesn't depend on pattern matching the name.
I've got it rigged to not do that, and I feel that my names
are now significantly better.
5) When TestLoader.loadTestsFrom{Name,Names}() are given a name that
resolves to a classmethod on a TestCase subclass, the method is not
invoked. From the docs:
The specifier name is a ``dotted name'' that may resolve either to a
module, a test
case class, a TestSuite instance, a test method within a test case class,
or a
callable object which returns a TestCase or TestSuite instance.
It is not documented which of these tests takes priority: is the
classmethod a test method within a test case class or is it a
callable? The same issue applies to staticmethods as well.
These are all new since pyUnit (renamed to unittest for inclusion
into the standard library) was written. My viewpoint is that it's a
feature that's looking for a use case.
As I intimated above, my current practice is to not use the supplied
mechanism for locating tests. I don't use it for locating test classes
either.
Once I get answers to these questions, I can finish off the last few
bits of the test suite and have it ready for 2.5-final.
Answers? On this list? I'm not even sure you can get
coherent opinions here.
John Roth
Thanks,
Collin Winter
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