Re: Reading a large csv file
Mag Gam wrote: Yes, the system has 64Gig of physical memory. drool ;-). What I meant was, is it possible to load to a hdf5 dataformat (basically NumPy array) without reading the entire file at first? I would like to splay to disk beforehand so it would be a bit faster instead of having 2 copies in memory. If you can write hdf5 a line at a time, you should be able to something like for line in cvs: process line write hdf5 line this assumes 1-1 lines. -- http://mail.python.org/mailman/listinfo/python-list
Re: Measuring Fractal Dimension ?
On Jun 23, 3:52 am, Steven D'Aprano wrote: > On Mon, 22 Jun 2009 13:43:19 -0500, David C. Ullrich wrote: > > In my universe the standard definition of "log" is different froim what > > log means in a calculus class > > Now I'm curious what the difference is. It's just the usual argument about whether 'log' means log base 10 or log base e (natural log). At least in the US, most[*] calculus texts (and also most calculators), for reasons best known to themselves, use 'ln' to mean natural log and 'log' to mean log base 10. But most mathematicians use 'log' to mean natural log: pick up a random pure mathematics research paper that has the word 'log' in it, and unless it's otherwise qualified, it's safe to assume that it means log base e. (Except in the context of algorithmic complexity, where it might well mean log base 2 instead...) Python also suffers a bit from this confusion: the Decimal class defines methods 'ln' and 'log10', while the math module and cmath modules define 'log' and 'log10'. (But the Decimal module has other problems, like claiming that 0**0 is undefined while infinity**0 is 1.) [*] A notable exception is Michael Spivak's 'Calculus', which also happens to be the book I learnt calculus from many years ago. Mark -- http://mail.python.org/mailman/listinfo/python-list
Re: GNUstep and Python
Diez B. Roggisch wrote: > Paul Watson schrieb: >> Has anyone used GNUstep? >> >> In addition to Objective-C, there are Java and Ruby bindings. >> >> Has anyone created a Python binding to GNUstep? > > There is the pyobjc-binding for OSX, maybe that's suitable for GNUStep. Apparently, it's not: There was some compatibility in earlier versions, but it's been officially removed in version 2.0. See http://pyobjc.sourceforge.net/NEWS-2.0.html : "GNUstep support has been removed because this has never worked properly, nobody seems interested in fixing that and the internal APIs of PyObjC have changed greatly." I'd love to see that happen, but GNUStep seems to be disappearing little by little. Too bad... -- http://mail.python.org/mailman/listinfo/python-list
Re: Open source python projects
saurabh wrote: > I am an experienced C programmer and recently dived into python, > I have developed an instant love for it. > I have been doing some routine scripting for day to day admin tasks,also > have done some Tkinter and socket programming using python. > > I am looking for some open source python project preferably in one of > the above areas (not strictly, am open to others too) to contribute. > > Please give me any pointers to some python project which needs a > contributor. I'm sure there are many projects which could need a helping hand. But instead of pointing you to a specific project I'd rather recommend that you contribute to projects you're using for your own daily work. Why? Because you simply know what's really needed if you deploy a software yourself. Ciao, Michael. -- Michael Ströder E-Mail: mich...@stroeder.com http://www.stroeder.com -- http://mail.python.org/mailman/listinfo/python-list
Re: launch a .py file from a batch file
2009/6/23 C M : >> Assuming you're running on Windows XP, try the following line in your >> batch file: >> @start path\MyPythonApp.pyw >> >> That's of course after you rename your script to a pyw extension. That's >> associated with pythonw, which doesn't need a command window. > > Well, I renamed my script to have a .pyw extension, and then ran the line > above. Without quotes, it doesn't find it (because I have spaces in the > path). > With quotes it just opens a console and does nothing (does not launch the > app). > > Any ideas? Use @start "" "path\MyPythonApp.pyw" The first item in quotes is the window title. If you only include the path (in quotes) it's taken as a title, which is why you need the second set of quotes. Paul. -- http://mail.python.org/mailman/listinfo/python-list
Re: Error in reg dll
Hi, somehow I fixed the issue related to error code 0xc005. Now I am getting a different error code while registering DLL.. it says: "DllRegisrerServer in Dspacvce.dll Failed. Reyurn Code was: 0x80040201" On Jun 20, 8:15 am, "Gabriel Genellina" wrote: > En Tue, 16 Jun 2009 02:09:57 -0300,Girish escribió: > > > I am not able to registerDLLgenerated from py2exe > > When I try to register thedllusing the commant: regsve32 dspace.dll, > > I am getting error saying :"DLLRegisterServer in dspace.dllfailed. > > Return code was: 0xc005" > > I don't think the problem is in your setup.py, but on Dspace.py or any > module it uses. 0xc005 is an Access Violation - an attempt to > read/write memory at an illegal address. > Try removing pieces from Dspace.py until you find the culprit. > > -- > Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
How to find info about python 3.x extension module availability?
Hi all, is there any site that reports the current porting (to Python 3.x) status of the main non-standard extension modules (such as pygtk, pywin32, wxpython, ...) ? I think such information would be very useful for people - like me - which are tryiing to decide how/when/if to port existing scripts/ applications to the new python, or also which python to use to start a new program. I searched and googled for this information but without finding anything. It looks to me that also the single extension module sites are quite shy at announcing plans for the porting (I understand that in part this is for the "is ready when is ready" philosophy of many non-large open software projects). Ciao - FB -- http://mail.python.org/mailman/listinfo/python-list
Re: Idioms and Anti-Idioms Question
In message , Peter Billam wrote: > Damian Conway, in Perl Best Practices, puts forward a clear argument > for breaking *before* the operator: Except in JavaScript, where you have no choice. -- http://mail.python.org/mailman/listinfo/python-list
Re: UnicodeDecodeError: problem when path contain folder start withcharacter 'u
thanks all for help... actually this was in old code having 'unicode_escape' . i hope it was there to handle path which may contain localized chars... but removing unicode_escape' it worked fine... :) rgds, aberry Mark Tolonen-3 wrote: > > > "aberry" wrote in message > news:24146775.p...@talk.nabble.com... >> >> I am facing an error on Unicode decoding of path if it contain a >> folder/file >> name starting with character 'u' . >> >> Here is what I did in IDLE >> 1. >>> fp = "C:\\ab\\anil" >> 2. >>> unicode(fp, "unicode_escape") >> 3. u'C:\x07b\x07nil' >> 4. >>> fp = "C:\\ab\\unil" >> 5. >>> unicode(fp, "unicode_escape") >> 6. >> 7. Traceback (most recent call last): >> 8. File "", line 1, in >> 9. unicode(fp, "unicode_escape") >> 10. UnicodeDecodeError: 'unicodeescape' codec can't decode bytes in >> position >> 5-9: end of string in escape sequence >> 11. >>> >> >> Not sure whether I am doing something wrong or this is as designed >> behavior >> . >> any help appreciated > > What is your intent? Below gives a unicode strings with backslashes. No > need for unicode_escape here. > fp = "C:\\ab\\unil" fp > 'C:\\ab\\unil' print fp > C:\ab\unil unicode(fp) > u'C:\\ab\\unil' print unicode(fp) > C:\ab\unil u'C:\\ab\\unil' > u'C:\\ab\\unil' print u'C:\\ab\\unil' > C:\ab\unil > > > > -- > http://mail.python.org/mailman/listinfo/python-list > > -- View this message in context: http://www.nabble.com/UnicodeDecodeError%3A-problem-when-path-contain-folder-start-with-character-%27u-tp24146775p24164207.html Sent from the Python - python-list mailing list archive at Nabble.com. -- http://mail.python.org/mailman/listinfo/python-list
I look for private Python Index server on my local network... What do you use ?
Hi, I wonder what Python Index server (like as pypi.python.org) do you use in your corporation for handle your private python eggs ? I found three solutions : * http://pypi.python.org/pypi/basketweaver/0.1.2-r6 * http://pypi.python.org/pypi/pypi/2005-08-01 * http://pypi.python.org/pypi/EggBasket/0.6.1b Do you know another software ? What do you use ? Thanks for your help, Stephane -- http://mail.python.org/mailman/listinfo/python-list
Authenticating to web service using https and client certificate
Hi, I need to post some XML files to a web client that requires a client certificate to authenticate. I have some code that works on posting a multipart form over http but I need to modify it to pass the proper certificate and post the XML file. Is there any example code that will point me in the correct direction? Thanks for your help. -- http://mail.python.org/mailman/listinfo/python-list
Re: launch a .py file from a batch file
Paul Moore wrote: 2009/6/23 C M : Assuming you're running on Windows XP, try the following line in your batch file: @start path\MyPythonApp.pyw That's of course after you rename your script to a pyw extension. That's associated with pythonw, which doesn't need a command window. Well, I renamed my script to have a .pyw extension, and then ran the line above. Without quotes, it doesn't find it (because I have spaces in the path). With quotes it just opens a console and does nothing (does not launch the app). Any ideas? Use @start "" "path\MyPythonApp.pyw" The first item in quotes is the window title. If you only include the path (in quotes) it's taken as a title, which is why you need the second set of quotes. Paul. CM - Paul is right. If you have to use quotes, then you also need the extra argument to hold the "title" for the command window that won't be created. Stupid syntax on "Start.exe". I seldom hit that because I try not to put anything in a directory with spaces in it, like "Program Files" or "Documents and Settings" I have uncovered dozens of bugs in other people's programs over the years that were triggered by spaces in the pathname. It's not so bad now, but still can bite you. -- http://mail.python.org/mailman/listinfo/python-list
C-extension 2 times slower than exe
Hi, I have a C++ program that I would like to steer using Python. I made the wrapper using swig and linked the code (without the main function) into a shared object. My Python script loads the extension and calls a function of the C-extension, the rest runs entirely within the C-extension. For comparison I compiled the code including the main function with the same compilation options and linked all into an exe. The main function of the exe calls the same function as my Python script does. Surprisingly the code in the Python C-extension runs twice as long as the same code in the exe. Does anyone know what could be the reason for this behaviour? Thank you in advance Rolf -- http://mail.python.org/mailman/listinfo/python-list
Re: C-extension 2 times slower than exe
On Jun 23, 2009, at 9:51 AM, Rolf Wester wrote: Hi, I have a C++ program that I would like to steer using Python. I made the wrapper using swig and linked the code (without the main function) into a shared object. My Python script loads the extension and calls a function of the C-extension, the rest runs entirely within the C-extension. For comparison I compiled the code including the main function with the same compilation options and linked all into an exe. The main function of the exe calls the same function as my Python script does. Surprisingly the code in the Python C-extension runs twice as long as the same code in the exe. Does anyone know what could be the reason for this behaviour? If the runtime of the C/C++ code is short, the time spent initializing the Python interpreter might have a big impact on the runtime of the Python version. -- http://mail.python.org/mailman/listinfo/python-list
Re: C-extension 2 times slower than exe
Philip Semanchuk wrote: > > On Jun 23, 2009, at 9:51 AM, Rolf Wester wrote: > >> Hi, >> >> I have a C++ program that I would like to steer using Python. I made the >> wrapper using swig and linked the code (without the main function) into >> a shared object. My Python script loads the extension and calls a >> function of the C-extension, the rest runs entirely within the >> C-extension. For comparison I compiled the code including the main >> function with the same compilation options and linked all into an exe. >> The main function of the exe calls the same function as my Python script >> does. Surprisingly the code in the Python C-extension runs twice as long >> as the same code in the exe. Does anyone know what could be the reason >> for this behaviour? > > If the runtime of the C/C++ code is short, the time spent initializing > the Python interpreter might have a big impact on the runtime of the > Python version. > > The runtime is about 2.5 sec and 5.0 sec respectively. I not only use the time command to measure the time consumed but I also measure the time within the C-code using clock() and get similar result. So the Python startup time is not the reason for the runtime difference I found. Thank you anyway. Rolf -- http://mail.python.org/mailman/listinfo/python-list
Re: UnicodeDecodeError: problem when path contain folder startwithcharacter 'u
"aberry" wrote in message
news:24164207.p...@talk.nabble.com...
Mark Tolonen-3 wrote:
"aberry" wrote in message
news:24146775.p...@talk.nabble.com...
I am facing an error on Unicode decoding of path if it contain a
folder/file
name starting with character 'u' .
Here is what I did in IDLE
1. >>> fp = "C:\\ab\\anil"
2. >>> unicode(fp, "unicode_escape")
3. u'C:\x07b\x07nil'
4. >>> fp = "C:\\ab\\unil"
5. >>> unicode(fp, "unicode_escape")
6.
7. Traceback (most recent call last):
8. File "", line 1, in
9. unicode(fp, "unicode_escape")
10. UnicodeDecodeError: 'unicodeescape' codec can't decode bytes in
position
5-9: end of string in escape sequence
11. >>>
Not sure whether I am doing something wrong or this is as designed
behavior
.
any help appreciated
What is your intent? Below gives a unicode strings with backslashes. No
need for unicode_escape here.
fp = "C:\\ab\\unil"
fp
'C:\\ab\\unil'
print fp
C:\ab\unil
unicode(fp)
u'C:\\ab\\unil'
print unicode(fp)
C:\ab\unil
u'C:\\ab\\unil'
u'C:\\ab\\unil'
print u'C:\\ab\\unil'
C:\ab\unil
thanks all for help...
actually this was in old code having 'unicode_escape' .
i hope it was there to handle path which may contain localized chars...
but removing unicode_escape' it worked fine... :)
If that was the case, then here's a few other options:
print 'c:abcunil\\xe4'.decode('unicode_escape')
c:\abc\unilä
print r'c:\\abc\\unil\xe4'.decode('unicode_escape')
c:\abc\unilä
print u'c:\\abc\u005cunil\u00e4'
c:\abc\unilä
print ur'c:\abc\u005cunil\u00e4'
c:\abc\unilä
You can also use forward slashes as another poster mentioned. If you want
to display the filenames with the backslashes, os.path.normpath can be used:
print os.path.normpath('c:/abc/unil\u00e4'.decode('unicode_escape'))
c:\abc\unilä
Note you only have to jump through these hoops to generate hard-coded
filenames with special characters. If they are already on disk, just read
them in with something like os.listdir(u'.'), which generates a list of
unicode filenames.
-Mark
--
http://mail.python.org/mailman/listinfo/python-list
Re: walking a directory with very many files
Steven D'Aprano wrote: > Lawrence D'Oliveiro wrote: > >>> Ok, now pipe ls to less, take three days to browse through all the >>> filenames to locate the file you want to see. >> >> Sounds like you're approaching the issue with a GUI-centric mentality, >> which is completely hopeless at dealing with this sort of situation. > > Piping the output of ls to less is a GUI-centric mentality? Yeah. The "dump it on the user" idea, or more politely "can't decide anything until the user has seen everything" is evident in the most "characteristic" GUIs. Mel. -- http://mail.python.org/mailman/listinfo/python-list
Re: I look for private Python Index server on my local network... What do you use ?
On Jun 23, 7:47 am, Klein Stéphane wrote: > Hi, > > I wonder what Python Index server (like as pypi.python.org) do you use in > your corporation for handle your private python eggs ? > > I found three solutions : > > *http://pypi.python.org/pypi/basketweaver/0.1.2-r6 > *http://pypi.python.org/pypi/pypi/2005-08-01 > *http://pypi.python.org/pypi/EggBasket/0.6.1b > > Do you know another software ? What do you use ? > > Thanks for your help, > Stephane I've always just created a directory structure laid out by egg name and enabled directory indexing. I've never really had a need for anything more complex and this has always worked well for me. For example: [r...@buildslave01 eggs]# pwd /var/www/html/eggs [r...@buildslave01 eggs]# [r...@buildslave01 eggs]# ls Beaker hostapi.logmgmt PasteSQLAlchemy zope.component [r...@buildslave01 eggs]# [r...@buildslave01 eggs]# ls Beaker/ Beaker-1.1.2-py2.4.egg Beaker-1.2.1-py2.4.egg [r...@buildslave01 eggs]# On this particular system, buildbot drops successfully built eggs into the correct location automatically for testing purposes. HTH, Jeff -- http://mail.python.org/mailman/listinfo/python-list
Re: How to find info about python 3.x extension module availability?
On 23 Giu, 12:59, Francesco Bochicchio wrote: > Hi all, > > is there any site that reports the current porting (to Python 3.x) > status of the main non-standard extension modules (such as pygtk, > pywin32, wxpython, ...) ? > I think such information would be very useful for people - like me - > which are tryiing to decide how/when/if to port existing scripts/ > applications to the new python, or also which python to use to start > a new program. > > I searched and googled for this information but without finding > anything. It looks to me that also the single extension module sites > are quite shy at announcing plans for the porting (I understand that > in part this is for the "is ready when is ready" philosophy of many > non-large open software projects). > > Ciao > - > FB Well, I kept searching and found this at least : http://www.daniweb.com/forums/thread165340.html It lists Qt , BeautfulSoup (with problems) and pywin32 (which I use a lot :-) Another (less famous) module that I use, ply, also supports python3.x Maybe in the near future I can start porting some of my scripts ... Still believe that a central point to keep track of most of extension porting effort would be very useful ... Ciao FB -- http://mail.python.org/mailman/listinfo/python-list
Help with dictionaries and multidimensial lists
Hey all, I have a dictionary that looks like this (small example version)
{(1, 2): 0} named a
so I can do a[1,2] which returns 0. What I also have is a list of
coordinates into a 2 dimensional array that might look like this b =
[[1,2]]. Is there anyway I can call a[b[0]] and have it return 0?
--
http://mail.python.org/mailman/listinfo/python-list
Re: [Mac] file copy
Tobias Weber wrote: > Hi, > which is the best way to copy files on OS X? I want to preserve resource > forks and extended attributes. Are these still relevant on OSX? I've always only copied files directly, and never had any troubles. Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: Procedures
Please keep the discussion on-list. (Reply-all, rather than just
replying to me.)
On Mon, 2009-06-22 at 15:36 -0700, Greg Reyna wrote:
> It's not the error that concerned me. The fact that there is an
> error of this type makes clear that there's something wrong with the
> way the scripts are structured. I was trying to communicate that I
> recognized this fact. Clearly, I was not successful. Thought I'd
> try to save bandwidth, too.
> ...
> I had tried running this previously with only one Class header:
> "LineReader", the others were just defs. I changed the short defs
> into sub-classes out of desperation, since I don't understand why the
> main script is not recognizing functions that are in the same file.
>
> First is the shell input/output, then "ParseWork.py", the entire text
> file that contains the scripts.
>
> Thanks for your interest, Cliff,
> Greg
> ---
> >>> import ParseWork
> >>> avar = ParseWork.LineReader()
> >>> xstring = 'scene 1, pnl 1, 3+8, pnl 2, 1+12, pnl 3, 12, pnl 4, 2+4,'
> >>> avar.parseLine(xstring)
> Traceback (most recent call last):
>File "", line 1, in
>File "ParseWork.py", line 13, in parseLine
> xreturn = advanceSearch(xstring) #shorten the part of string to
> be searched
> NameError: global name 'advanceSearch' is not defined
> >>>
> ---
> class LineReader:
> def parseLine(self, xstring):
> global sc_info,scnum,pnlnum,prev_pos,cur_pos
> sc_info = { 'sc':{0:0}} #dict to store scene num; pnl num(s), ftge
> prev_pos = 0
> cur_pos = xstring.find(',') #defaults to length of string
> while xstring.find(',',(prev_pos+1)) != -1:
> temp = xstring[prev_pos:cur_pos] #pull out the part btwn commas
> section = temp.strip()
> if section[0:1] == 's':
> scnum = int(section[5:]) #get the number(s) off the
> end of scene block
> sc_info['sc',scnum] = scnum #store scnum-which is
> both key and value
> xreturn = advanceSearch(xstring) #shorten the part
> of string to be searched
> continue
> if section[0:1] == 'p':
> pnlnum = int(section[3:])
> sc_info['sc',scnum,pnlnum] = pnlnum #store pnlnum &
> temp value for pnlnum
> xreturn = advanceSearch(xstring) #the return value
> is to move flow back here
> continue
> if section[0:1] != 's' or 'p':
> xnum = section[0:] #section must contain the footage
> if section.find('+'): #the + exists
> ftge = parseFtge(section)
> sc_info['sc',scnum,pnlnum] = ftge #store ftge in pnlnum
> xreturn = advanceSearch(xstring)
> continue
> else:
> ftge = (section/16.0) #section is frames-convert
> to decimal
> sc_info['sc',scnum,pnlnum] = ftge #store ftge in pnlnum
> xreturn = advanceSearch(xstring)
> continue
> else:
> print sc_info
>
> class ContRead(LineReader):
> def advanceSearch(xstring):
> prev_pos = (cur_pos +1)
> cur_pos = xstring.find(',',prev_pos) #find the next comma
> return
>
> class Footage(LineReader):
> def parseFtge(section):
> xplus = section.find('+') #find position of '+'
> xfeet = int(section[0:xplus])
> xframes = int(section[(xplus + 1):-1])
> xframes_d = (xframes/16.0)
> return (xfeet + xframes_d)
>
>
>From what I can see you have no need for classes in your code. This is
probably what is causing you trouble at the moment, so I would say just
remove them.
def parse_line(line):
"""splits a line on commas"""
return line.split(',')
def parse_footer(line):
"""Strips off leading four characters (maybe 'Ftr:'), and then
parses the rest as above"""
return parse_line([4:])
That should solve your problem. Below I illustrate some of how classes
work, in case you are dead set on using them. Learning Python should
address all of this as well. I haven't read it, so I can't be more
specific.
To call a method from another method within a class, you need to prefix
it with self. That looks like this:
class Spam(object): ## {1}
def parse_line(self, line): ## {2}
return line.split(',')
def parse_footer(self, line):
return self.parse_line(line[4:]) ## {3}
# {1} always subclass 'object' to use newstyle classes
# {2} Note that method declarations have an extra first argument,
# usually called "self", which refers to your instance of the class.
# {3} "self" finds parse_line within the current class
# or superclasses of the current class. Note that self has
# moved from inside the parentheses to before the method
Re: [Mac] file copy
On Jun 23, 2009, at 10:54 AM, Diez B. Roggisch wrote: Tobias Weber wrote: Hi, which is the best way to copy files on OS X? I want to preserve resource forks and extended attributes. Are these still relevant on OSX? I've always only copied files directly, and never had any troubles. I think resource forks are now stored as extended attributes, and Apple's version of cp is aware of extended attributes. Try this -- create a text file via terminal using `touch foo.txt`. In Finder, click "get info" on the file and change it to open with anything other than TextEdit (e.g. Firefox). Now go back to terminal and look at the file. It's still zero bytes long, but try the command `xattr foo.txt` -- $ xattr foo.txt com.apple.FinderInfo com.apple.ResourceFork Also -- $ cp foo.txt bar.txt $ xattr bar.txt com.apple.FinderInfo com.apple.ResourceFork xattr -h gives options for this command. To the OP -- I remember reading somewhere that xattr is written in Python. You might find it useful or even be able to import it directly. HTH Philip -- http://mail.python.org/mailman/listinfo/python-list
Re: How to find info about python 3.x extension module availability?
On Jun 23, 6:59 am, Francesco Bochicchio wrote: > Hi all, > > is there any site that reports the current porting (to Python 3.x) > status of the main non-standard extension modules (such as pygtk, > pywin32, wxpython, ...) ? > I think such information would be very useful for people - like me - > which are tryiing to decide how/when/if to port existing scripts/ > applications to the new python, or also which python to use to start > a new program. > > I searched and googled for this information but without finding > anything. It looks to me that also the single extension module sites > are quite shy at announcing plans for the porting (I understand that > in part this is for the "is ready when is ready" philosophy of many > non-large open software projects). > > Ciao > - > FB You can pull a list of what works with 3.0 via PyPi, there's a link which points you to http://pypi.python.org/pypi?:action=browse&c=533&show=all. If the package isn't listed on PyPi, I believe you'll have to check out the vendor/distribution site. I posted something like this on my blog a few months back. Finding what's available isn't too terribly difficult. I thought it would be nice to have a port status page that lets the community know where certain package stand so volunteers can step in and help. I guess it would be rather difficult to keep such a page updated, though. -- http://mail.python.org/mailman/listinfo/python-list
Re: Idioms and Anti-Idioms Question
En Mon, 22 Jun 2009 20:34:40 -0300, Miles Kaufmann escribió: On Jun 22, 2009, at 12:14 AM, Ben Charrow wrote: What is subtly wrong about this piece of code? I can't see any bugs and can't think of subtle gotchas (e.g. the '\' is removed or the lines become separated, because in both cases an IndentationError would be raised). Perhaps, along with one of those gotchas, a mix of tabs and spaces are used such that the second line only _appears_ to have a different level of indentation? ;) Neither. As back in time as I can go (Python 1.5), having any character after the backslash has always been a syntax error no matter what. Only the error message has changed: C:\TEMP>python15 syntaxerror.py File "syntaxerror.py", line 18 value = foo.bar()['first'][0]*baz.quux(1, 2)[5:9] \ ^ SyntaxError: invalid token So the "it might be subtly wrong" argument is strongly wrong. -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
Re: Help with dictionaries and multidimensial lists
On Tue, Jun 23, 2009 at 4:45 PM, Cameron
Pulsford wrote:
> Hey all, I have a dictionary that looks like this (small example version)
> {(1, 2): 0} named a
>
> so I can do a[1,2] which returns 0. What I also have is a list of
> coordinates into a 2 dimensional array that might look like this b =
> [[1,2]]. Is there anyway I can call a[b[0]] and have it return 0?
a[tuple(b[0])] should do it...
Jaime
--
(\__/)
( O.o)
( > <) Este es Conejo. Copia a Conejo en tu firma y ayúdale en sus
planes de dominación mundial.
--
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Re: Idioms and Anti-Idioms Question
On Jun 21, 9:14 pm, Ben Charrow wrote: > I have a question about the "Using Backslash to Continue Statements" in the > howto "Idioms and Anti-Idioms in Python" > (http://docs.python.org/howto/doanddont.html#using-backslash-to-contin...) > > It says: > > "...if the code was: > > value = foo.bar()['first'][0]*baz.quux(1, 2)[5:9] \ > + calculate_number(10, 20)*forbulate(500, 360) > > then it would just be subtly wrong." > > What is subtly wrong about this piece of code? I can't see any bugs and can't > think of subtle gotchas (e.g. the '\' is removed or the lines become > separated, > because in both cases an IndentationError would be raised). Perhaps it was originally was like this: value = foo.bar()['first'][0]*baz.quux(1, 2)[5:9] \ + calculate_number(10, 20)*forbulate(500, 360) Carl Banks -- http://mail.python.org/mailman/listinfo/python-list
Re: Help with dictionaries and multidimensial lists
Thanks!
On Tue, Jun 23, 2009 at 11:29 AM, Jaime Fernandez del Rio <
jaime.f...@gmail.com> wrote:
> On Tue, Jun 23, 2009 at 4:45 PM, Cameron
> Pulsford wrote:
> > Hey all, I have a dictionary that looks like this (small example version)
> > {(1, 2): 0} named a
> >
> > so I can do a[1,2] which returns 0. What I also have is a list of
> > coordinates into a 2 dimensional array that might look like this b =
> > [[1,2]]. Is there anyway I can call a[b[0]] and have it return 0?
>
> a[tuple(b[0])] should do it...
>
> Jaime
>
> --
> (\__/)
> ( O.o)
> ( > <) Este es Conejo. Copia a Conejo en tu firma y ayúdale en sus
> planes de dominación mundial.
>
--
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Re: Converting Python code to C/C++
On Mon, Jun 22, 2009 at 9:49 PM, Andras Pikler wrote: > Hi! > > > > Short: I need to turn a Python program that I (mostly) wrote into C code, > and I am at a loss. > > > > Long: I’m doing research/programming for a professor, and we are working > with MIDI files (a type of simple music file). The research deals with > generating variations from a musical melody; currently, my Python code uses > a Python midi package I found online to read the notes in question from a > midi file, about 350 lines of my own code to generate a variation based on > these notes and the professor’s algorithms, and finally the package again to > write the new melody to another midi file. > > > > Now, my professor would like to have this exact code in C/C++, as she > believes C is more compatible with MATLAB, and wants the code to be > available in multiple languages in case a programmer works for her in the > future who knows C but not Python. While I know a tiny bit of C (emphasis on > the tiny), I would much prefer if there were some sort of automatic compiler > I could use to turn my Python code into C than taking a week or two or three > to learn the minimum I need about C, find a way to access MIDI files in it, > and rewrite all of my code. > > > > After some googling, I found and tried Shedskin, but it doesn’t work, as the > Python midi package I’m using uses modules which Shedskin does not support. > Otherwise, I haven’t found much. Is there anything out there to help me do > this? If not, from anyone who has experience in this regard, how daunting > should I expect this to be? Taking on C from a cold start and being able to handle the ins and outs of interfacing with Python isn't something that's feasible in 'two or three weeks'. Here are a couple of options -- take 'em or leave 'em: 1) Put the code in Cython: http://www.cython.org/ (full disclosure: I'm doing a GSoC project with Cython). It will convert pretty much any python code into C code (even closures are supported in the most recent version, I think), and the C code can then be compiled into an extension module. The only problem with the above is the C code isn't, at first blush, easy to read. Nor is it supposed to be changed by the user. So that leads us to option... 2) Write the core functionality in C yourself, and then wrap those C functions in Cython. You'll want to take a look at the documentation: http://docs.cython.org/ and, more specifically on wrapping C code: http://docs.cython.org/docs/external_C_code.html I don't think you'll be able to avoid learning C, though. Kurt -- http://mail.python.org/mailman/listinfo/python-list
Re: Idioms and Anti-Idioms Question
On Mon, 2009-06-22 at 22:52 +, Peter Billam wrote: > I wonder on what grounds PEP8 > says "The preferred place to break around a binary operator is > *after* the operator" ? > Perhaps it's just the "continutation marker" rationale? > > Regards, Peter > > -- > Peter Billam www.pjb.com.auwww.pjb.com.au/comp/contact.html If the lines got separated, a leading + could disappear into its line without any errors showing up. A trailing + would raise a syntax error. >>> spam = 6 >>> spam + File "", line 1 spam + ^ SyntaxError: invalid syntax >>> + spam 6 >>> -- http://mail.python.org/mailman/listinfo/python-list
help!
Python Version: 2.6 GUI toolkit: WxPython Ok so i am writing a program for my school's football team. In one part there is a notebook with 4 tabs for that stats. In each tab there are 4 txtctrl's with a + and - for each. The problem im having is that i need when you click the + or - button that it updates that stat for the player. _ Microsoft brings you a new way to search the web. Try Bing™ now http://www.bing.com?form=MFEHPG&publ=WLHMTAG&crea=TEXT_MFEHPG_Core_tagline_try_bing_1x1-- http://mail.python.org/mailman/listinfo/python-list
Re: How to find info about python 3.x extension module availability?
On 23 Giu, 17:12, Jeff McNeil wrote: > On Jun 23, 6:59 am, Francesco Bochicchio wrote: > > > > > > > Hi all, > > > is there any site that reports the current porting (to Python 3.x) > > status of the main non-standard extension modules (such as pygtk, > > pywin32, wxpython, ...) ? > > You can pull a list of what works with 3.0 via PyPi, there's a link > which points you tohttp://pypi.python.org/pypi?:action=browse&c=533&show=all. > If the package isn't listed on PyPi, I believe you'll have to check > out the vendor/distribution site. > > I posted something like this on my blog a few months back. Finding > what's available isn't too terribly difficult. I thought it would be > nice to have a port status page that lets the community know where > certain package stand so volunteers can step in and help. I guess it > would be rather difficult to keep such a page updated, though > > - Mostra testo citato - Thanks. I thought of pypy, and even tried to search for Python 3 using its search button, but somehow missed the handy "python 3" link on the sidebar :-0 I agree that keeping a complete list would be very difficult, although useful ... Ciao FB -- http://mail.python.org/mailman/listinfo/python-list
Re: [Mac] file copy
On Jun 23, 2009, at 12:20 PM, Tobias Weber wrote: In article , Philip Semanchuk wrote: I think resource forks are now stored as extended attributes, and No I'll take your word for it because I was just guessing, but then why do the xattrs in the example I gave show a resource fork? Apple's version of cp is aware of extended attributes. Yes, but the manual doesn't say to what extent, nor anything about ACLs Your original question didn't say anything about ACLs either. To the OP -- I remember reading somewhere that xattr is written in Python. You might find it useful or even be able to import it directly. It uses a C extension, but I could import it if I wanted to re-invent the wheel ;) Isn't importing a module that's already written the exact opposite of re-inventing the wheel? -- http://mail.python.org/mailman/listinfo/python-list
Re: reply to OT diversion (was: What is the best method to match a pattern in set of lines
In article <024d7a38$0$20654$c3e8...@news.astraweb.com>, Steven D'Aprano wrote: >Dennis Lee Bieber wrote: >> On Sat, 20 Jun 2009 13:47:24 -0700 (PDT), Bearophile >> declaimed the following in >> gmane.comp.python.general: >>> >>> Dennis Lee Bieber, may I ask why most or all your posts are set to "No- >>> Archive"? >> >> I'm from the days when the majority of NNTP servers were configured >> to expire posts after some number of days (Netcom used to expire binary >> groups after 24 hours! and most others were something like 14 days). >> >> Then came the precursor to GoogleGroups -- DejaNews -- threatening >> to archive posts through eternity. This resulted in a fair amount of >> protesting by some, and the creation of the x-no-archive header >> convention (Agent even has configuration options such that, if one were >> to not normally use x-no-archive such that one's own posts could be >> archived, one could still honor it in replies to posts that did contain >> it -- so those replies with quoted contents would also not be archived). >> >> It was at that time that I added the x-no-archive header to my posts >> from Agent; as, while not as vocal as others, did object to DejaNews >> plans. > >But your replies often contain useful information. It's a shame that they >disappear from record, making them invisible for anyone searching the >archives. > >A good rule of thumb when judging behaviour is to ask, "What if everyone did >this?". If everyone set x-no-archive, then discussions on Usenet would be >ephemeral, we couldn't point people to past discussions for information, >and we would lose a lot of useful information. (Also a lot of garbage.) I >can't tell you how often I find useful information in the archives of >comp.lang.python thanks to those who archive the gname news-to-email >gateway, and Google groups. If everyone did what you use, the entire >community, including myself, would be far worse off. > >As far as I'm concerned, setting x-no-archive is harmful, anti-social >behaviour on a technical newsgroup like this. You (almost) might as well >just email the poster you're replying to directly. Your response to Dennis seems at least a little over-the-top. So far as I'm concerned, anyone who joined Usenet after DejaNews is a latecomer; trying to change the cultural beliefs of those who were here first is asserting your superiority. I happen to disagree with people who post with X-no-archive, but I think it's certainly their right. Guess what? Prior to DejaNews, discussions on Usenet *were* ephemeral, and it all worked. -- Aahz (a...@pythoncraft.com) <*> http://www.pythoncraft.com/ "as long as we like the same operating system, things are cool." --piranha -- http://mail.python.org/mailman/listinfo/python-list
Re: Open source python projects
In article <4a3fde13$0$48239$14726...@news.sunsite.dk>, saurabh wrote: > >I am an experienced C programmer and recently dived into python, >I have developed an instant love for it. >I have been doing some routine scripting for day to day admin tasks,also >have done some Tkinter and socket programming using python. > >I am looking for some open source python project preferably in one of >the above areas (not strictly, am open to others too) to contribute. http://wiki.python.org/moin/VolunteerOpportunities -- Aahz (a...@pythoncraft.com) <*> http://www.pythoncraft.com/ "as long as we like the same operating system, things are cool." --piranha -- http://mail.python.org/mailman/listinfo/python-list
Dynamic method invocation
Hi I am new to jythong and was wondering if/how I can do the following - a) register a java object with a given name with jython interpreter using set method b) call methods on the java object - but the methods may not exist on the object, so I would like to call from jython a generic method that I have defined on the object as opposed to using java reflection. Thus the java class is more like a proxy for invocation. As an example, I register an instance of java class Bar with name foo. I want to be able to call from jython - foo.method1 (args) I don't want to define all the methods that I can call from jython on class foo but have a generic method that the above jython code will invoke. I want to use a model where the methods that can be called on foo are discovered dynamically once they are invoked on java class. Clearly Java won't let me do this during method invocation so I am wondering if I can register some sort of proxy object with jython that will let me then delegate right call down to the java object. Thanks a bunch -- http://mail.python.org/mailman/listinfo/python-list
Re: reply to OT diversion
Aahz wrote: [snip] Your response to Dennis seems at least a little over-the-top. So far as I'm concerned, anyone who joined Usenet after DejaNews is a latecomer; trying to change the cultural beliefs of those who were here first is asserting your superiority. I happen to disagree with people who post with X-no-archive, but I think it's certainly their right. Guess what? Prior to DejaNews, discussions on Usenet *were* ephemeral, and it all worked. Difficult to prove, though, because the evidence no longer exists! :-) -- http://mail.python.org/mailman/listinfo/python-list
Re: Measuring Fractal Dimension ?
Mark Dickinson wrote: > On Jun 23, 3:52 am, Steven D'Aprano > wrote: >> On Mon, 22 Jun 2009 13:43:19 -0500, David C. Ullrich wrote: >>> In my universe the standard definition of "log" is different froim what >>> log means in a calculus class >> Now I'm curious what the difference is. > > It's just the usual argument about whether 'log' means > log base 10 or log base e (natural log). At least in the > US, most[*] calculus texts (and also most calculators), > for reasons best known to themselves, use 'ln' to mean > natural log and 'log' to mean log base 10. But most > mathematicians use 'log' to mean natural log: pick up a > random pure mathematics research paper that has the word > 'log' in it, and unless it's otherwise qualified, it's > safe to assume that it means log base e. (Except in the > context of algorithmic complexity, where it might well > mean log base 2 instead...) I usually use log without explicit base only when the base isn't relevant in the context (i.e. when whatever sane base you put in it wouldn't really affect the operations). In algorithmic complexity, a logarithm's base doesn't affect the growth shape and, like constant multiplier, is considered irrelevant to the complexity. > Python also suffers a bit from this confusion: the > Decimal class defines methods 'ln' and 'log10', while > the math module and cmath modules define 'log' and > 'log10'. In fact, in the Decimal class there is no log to an arbitrary base. > (But the Decimal module has other problems, > like claiming that 0**0 is undefined while > infinity**0 is 1.) Well, in math inf**0 is undefined. Since python is programming language, and in language standards it is well accepted that undefined behavior means implementations can do anything they like including returning 0, 1, 42, or even spitting errors, that doesn't make python non-conforming implementation. A more serious argument: in IEEE 745 float, inf**0 is 1. Mathematic operation in python is mostly a wrapper for the underlying C library's sense of math. > [*] A notable exception is Michael Spivak's 'Calculus', which also > happens to be the book I learnt calculus from many years ago. -- http://mail.python.org/mailman/listinfo/python-list
Re: Reading a large csv file
Mag, If your source data is clean, it may also be faster for you to parse your input files directly vs. use the CSV module which may(?) add some overhead. Check out the struct module and/or use the split() method of strings. We do a lot of ETL processing with flat files and on a slow single core processing workstation, we can typically process 2 Gb of data in ~5 minutes. I would think a worst case processing time would be less than an hour for 14 Gb of data. Malcolm -- http://mail.python.org/mailman/listinfo/python-list
Re: Idioms and Anti-Idioms Question
Peter Billam wrote: > On 2009-06-22, Lie Ryan wrote: >> Ben Charrow wrote: >>> value = foo.bar()['first'][0]*baz.quux(1, 2)[5:9] \ >>> + calculate_number(10, 20)*forbulate(500, 360) >>> What is subtly wrong about this piece of code? I can't see any bugs and >>> can't think of subtle gotchas (e.g. the '\' is removed or the lines >>> become separated, because in both cases an IndentationError would be >>> raised). >> The preferred style is to put the binary operators before the line-break >> (i.e. the line break is after the operators): >> value = foo.bar()['first'][0]*baz.quux(1, 2)[5:9] + \ >> calculate_number(10, 20)*forbulate(500, 360) >> ... >> The following is an extract from PEP 8: >> The preferred way of wrapping long lines is by using Python's >> implied line continuation inside parentheses, brackets and braces. >> If necessary, you can add an extra pair of parentheses around an >> expression, but sometimes using a backslash looks better. Make sure to >> indent the continued line appropriately. The preferred place to break >> around a binary operator is *after* the operator, not before it. > > Damian Conway, in Perl Best Practices, puts forward a clear argument > for breaking *before* the operator: > Using an expression at the end of a statement gets too long, > it's common practice to break that expression after an operator > and then continue the expression on the following line ... > The rationale is that the operator that remains at the end > of the line acts like a continutation marker, indicating that > the expression continues on the following line. > Using the operator as a continutation marker seems like > an excellent idea, but there's a serious problem with it: > people rarely look at the right edge of code. > Most of the semantic hints in a program - such as keywords - > appear on the left side of that code. More importantly, the > structural cues for understanding code - for example, indenting, - > are predominantly on the left as well ... This means that indenting > the continued lines of the expression actually gives a false > impression of the underlying structure, a misperception that > the eye must travel all the way to the right margin to correct. > > which seems to me well-argued. I wonder on what grounds PEP8 > says "The preferred place to break around a binary operator is > *after* the operator" ? > Perhaps it's just the "continutation marker" rationale? > > Regards, Peter > When you're *scanning* the code, breaking the line before the operator might be better since you can easily see that that a line is a continuation from the previous line. However, when it comes to *reading* the code, it's easy to miss that the code continues to the next line, especially when you rely on parentheses' implicit line continuation and don't use an explicit line-continuation character (i.e. \). So... IMHO when it comes to break before or after the operator, it depends on whether you rely on parentheses or explicit line continuation. If you use implicit continuation with parentheses, it's better to break after operators; else if you use explicit continuation with \, it's better to break before operators. Since python prefers using parentheses' implicit line cont., it follows that breaking after operator is the natural choice. -- http://mail.python.org/mailman/listinfo/python-list
Re: launch a .py file from a batch file
On Jun 23, 5:30 am, Paul Moore wrote: > 2009/6/23 C M : > > >> Assuming you're running on Windows XP, try the following line in your > >> batch file: > >> @start path\MyPythonApp.pyw > > >> That's of course after you rename your script to a pyw extension. That's > >> associated with pythonw, which doesn't need a command window. > > > Well, I renamed my script to have a .pyw extension, and then ran the line > > above. Without quotes, it doesn't find it (because I have spaces in the > > path). > > With quotes it just opens a console and does nothing (does not launch the > > app). > > > Any ideas? > > Use > > @start "" "path\MyPythonApp.pyw" > > The first item in quotes is the window title. If you only include the > path (in quotes) it's taken as a title, which is why you need the > second set of quotes. > > Paul. Unfortunately, when I try that it says "Windows cannot find [that file]", etc. And yet I am copying the filename right from the file manager and it IS there. What's also odd is that if I open the file using cd and then just putting the filename on the next line, that file (which I gave a .pyw extension) doesn't open, but a file that has a .py extension does. Any ideas? Thanks. Che -- http://mail.python.org/mailman/listinfo/python-list
Re: Perl's @foo[3,7,1,-1] ?
Jean-Michel Pichavant wrote: > Lie Ryan wrote: >> Jean-Michel Pichavant wrote: >> >> >> >> >>> Maybe I've been a little bit too dictatorial when I was saying that >>> renaming namespaces should be avoided. >>> Sure your way of doing make sense. In fact they're 2 main purposes of >>> having strong coding rules: >>> 1/ ease the coder's life >>> 2/ ease the reader's life >>> >>> The perfect rule satisfies both of them, but when I have to choose, I >>> prefer number 2. Renaming packages, especially those who are world wide >>> used, may confuse the reader and force him to browse into more code. >>> >>> From the OP example, I was just pointing the fact that **he alone** >>> gains 3 characters when **all** the readers need to ask what means "np". >>> Renaming namespaces with a well chosen name (meaningful) is harmless. >>> >> >> As long as you keep all import statements at the head of the file, there >> is no readability problems with renaming namespace. >> >> Glance at the header file, see: >> import numpy as np >> >> and it's not hard to mentally switch np as numpy... >> >> well, as long as your header doesn't look like this: >> import numpy as np >> import itertools as it >> import Tkinter as Tk >> from time import time as t >> > > yep, your example is good, no namespace renaming ... :o) > I would gladly accept the following renaming: > import theMostEfficientPythonPackageInTheWorld as meppw > Hopefully, package names are often usable as provided. > > Moreover, writing numpy instead of np is not harder for the coder than > switching mentally from np to numpy for the reader. It's just about who > you want to make the life easier, the coder or the reader ? My point was, use namespace renaming whenever that improves readability; however like all tools, don't overuse it Another usecase might be when you have two similarly named package which might bring confusion on which is which if left as is. -- http://mail.python.org/mailman/listinfo/python-list
Re: [Mac] file copy
Tobias Weber wrote: >> Apple's version of cp is aware of extended attributes. > > Yes, but the manual doesn't say to what extent, nor anything about ACLs mv, cp, etc (but not rsync) are completely aware of resource forks from Tiger on. This is well documented and known on the Mac forums. So shutils should work just fine for copying, moving, etc. -- http://mail.python.org/mailman/listinfo/python-list
Re: C-extension 2 times slower than exe
Rolf Wester wrote: > The runtime is about 2.5 sec and 5.0 sec respectively. I not only use > the time command to measure the time consumed but I also measure the > time within the C-code using clock() and get similar result. So the > Python startup time is not the reason for the runtime difference I > found. Thank you anyway. Without a profiler it's hard to say where the time is being consumed. You might want to use ctypes and open your c++ code as a DLL without the python extension wrapper. -- http://mail.python.org/mailman/listinfo/python-list
Re: Help with dictionaries and multidimensial lists
Cameron Pulsford wrote:
Hey all, I have a dictionary that looks like this (small example version)
{(1, 2): 0} named a
so I can do a[1,2] which returns 0. What I also have is a list of
coordinates into a 2 dimensional array that might look like this b =
[[1,2]]. Is there anyway I can call a[b[0]] and have it return 0?
Unless you are mutating your coordinate pairs in place, which you very
seldom would *have to* do, I would make them tuples.
b = [ (1,2), (3,5), ...]
This would even save a bit of memory.
I prefer this to converting list pairs to tuple pairs on access.
tjr
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Re: [Mac] file copy
On Tue, Jun 23, 2009 at 2:28 PM, Michael Torrie wrote: > mv, cp, etc (but not rsync) are completely aware of resource forks from > Tiger on. This is well documented and known on the Mac forums. > > So shutils should work just fine for copying, moving, etc. I don't think that's true. The shutil docs (http://docs.python.org/library/shutil.html) has a big red box at the top that says: """ Warning Even the higher-level file copying functions (copy(), copy2()) can’t copy all file metadata. On POSIX platforms, this means that file owner and group are lost as well as ACLs. On Mac OS, the resource fork and other metadata are not used. This means that resources will be lost and file type and creator codes will not be correct. On Windows, file owners, ACLs and alternate data streams are not copied. """ If I understand the OP's question from the first email in this thread, that should pretty strongly warn you that shutil.copy2 is not going to do what you want. Not being a mac user myself, I don't know what the right way to accomplish what you want is, though. -- Jerry -- http://mail.python.org/mailman/listinfo/python-list
Re: Dynamic method invocation
jythonuser schrieb:
Hi
I am new to jythong and was wondering if/how I can do the following -
a) register a java object with a given name with jython interpreter
using set method
b) call methods on the java object - but the methods may not exist on
the object, so I would like to call from jython a generic method that
I have defined on the object as opposed to using java reflection.
Thus the java class is more like a proxy for invocation.
As an example, I register an instance of java class Bar with name
foo. I want to be able to call from jython -
foo.method1 (args)
I don't want to define all the methods that I can call from jython on
class foo but have a generic method that the above jython code will
invoke. I want to use a model where the methods that can be called on
foo are discovered dynamically once they are invoked on java class.
Clearly Java won't let me do this during method invocation so I am
wondering if I can register some sort of proxy object with jython that
will let me then delegate right call down to the java object.
It's very unclear to me what you want, but to me, it looks as if you
have some misconceptions about jython.
There is no "registration" of java-objects. If you have a java-object,
you can assign it to a name, and simply invoke any method on it
(internally, that will mean using reflection, but that's below the
covers for you)
foo = SomeJavaClass()
foo.some_method()
As long as some_method is defined on SomeJavaClass, this will work. And
there is also no type-information needed, so this will work in Jython,
but not in java:
java
class A {
public void foo() {};
}
class B { // NOT A SUBCLASS OF A!!
public void foo() {};
}
jython
if some_condition:
bar = A()
else:
bar = B()
bar.foo()
Regarding the "generic method thing", I guess this will work:
foo = SomeJavaObject()
m = getattr(foo, "method_name_that_might_not_be_defined", None)
if m:
m(argument)
Diez
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Re: [Mac] file copy
On Jun 23, 2009, at 9:52 AM, Tobias Weber wrote: Hi, which is the best way to copy files on OS X? I want to preserve resource forks and extended attributes. ... bin/cp -p This. cp -p, mv, rsync -E, tar, and other utilities will use the copyfile(3) API to preserve extended attributes, resource forks, and ACLs. cp -Rp should be just as safe as a Finder copy--moreso if you run it as root--with the exception of preserving creation dates. Or if you're worried about hard links, check out ditto(1). You presumably already know this, but avoid shutil at all costs. BackupBouncer (http://www.n8gray.org/code/backup-bouncer/) makes testing what gets preserved by various methods of copying quick and easy. The results for a Finder copy: Verifying:basic-permissions ... FAIL (Critical) Verifying: timestamps ... ok (Critical) Verifying: symlinks ... ok (Critical) Verifying:symlink-ownership ... FAIL Verifying:hardlinks ... FAIL (Important) Verifying: resource-forks ... Sub-test: on files ... ok (Critical) Sub-test: on hardlinked files ... FAIL (Important) Verifying: finder-flags ... ok (Critical) Verifying: finder-locks ... ok Verifying:creation-date ... ok Verifying:bsd-flags ... ok Verifying: extended-attrs ... Sub-test: on files ... ok (Important) Sub-test: on directories ... ok (Important) Sub-test: on symlinks ... ok Verifying: access-control-lists ... Sub-test: on files ... ok (Important) Sub-test: on dirs ... ok (Important) Verifying: fifo ... FAIL Verifying: devices ... FAIL Verifying: combo-tests ... Sub-test: xattrs + rsrc forks ... ok Sub-test: lots of metadata ... FAIL sudo cp -Rp: Verifying:basic-permissions ... ok (Critical) Verifying: timestamps ... ok (Critical) Verifying: symlinks ... ok (Critical) Verifying:symlink-ownership ... ok Verifying:hardlinks ... FAIL (Important) Verifying: resource-forks ... Sub-test: on files ... ok (Critical) Sub-test: on hardlinked files ... FAIL (Important) Verifying: finder-flags ... ok (Critical) Verifying: finder-locks ... ok Verifying:creation-date ... FAIL Verifying:bsd-flags ... ok Verifying: extended-attrs ... Sub-test: on files ... ok (Important) Sub-test: on directories ... ok (Important) Sub-test: on symlinks ... ok Verifying: access-control-lists ... Sub-test: on files ... ok (Important) Sub-test: on dirs ... ok (Important) Verifying: fifo ... ok Verifying: devices ... ok Verifying: combo-tests ... Sub-test: xattrs + rsrc forks ... ok Sub-test: lots of metadata ... ok -Miles -- http://mail.python.org/mailman/listinfo/python-list
Re: help!
On Tue, Jun 23, 2009 at 12:19 PM, tanner barnes wrote: > Python Version: 2.6 > GUI toolkit: WxPython > > Ok so i am writing a program for my school's football team. In one part > there is a notebook with 4 tabs for that stats. In each > tab there are 4 txtctrl's with a + and - for each. The problem im having is > that i need when you click the + or - button that it updates that stat for > the player. > And what would you like us to tell you? Without specific details, the only advice I can give is to bind an event to the plus and minus buttons that updates the data. Or do you not know how to do that? What do you mean by update? Update the text in the GUI, save to a text file, or commit to a database? Please be as specific as possible. > > Microsoft brings you a new way to search the web. Try Bing™ now > -- > http://mail.python.org/mailman/listinfo/python-list > > -- http://mail.python.org/mailman/listinfo/python-list
Trouble with running java using Popen
I have a java prog I need to run at some point during the execution of a python module. The path to the folder containing the all the relevant java stuff (which runs fine from the command line) is stored in pkgpath. The relevant code is this: >>> os.chdir(pkgpath) >>> arglist = "java -Xmx1024m SemanticVectorsEvaluator ." + indexpath >>> SemVectPackage = Popen(arglist, stdout=PIPE, shell=True) >>> SemVectPackage.wait() Here indexpath is the path to a particular index file (usually indexpath = "./indexfolder/fileindex"), so that effectively Popen should be running the equivalent of the shell command: - java -Xmx1024m SemanticVectorsEvaluator ../indexfolder/fileindex - which, again, runs fine in the terminal. However running the program returns the following error (echoed from shell, doesn't interrupt prog): - Exception in thread "main" java.lang.NoClassDefFoundError: SemanticVectorsEvaluator - I have no idea why this isn't working. Anyone have any suggestions as to how I might troubleshoot this? Best, Edward -- http://mail.python.org/mailman/listinfo/python-list
Re: re.NONE
On Jun 22, 5:56 pm, Lawrence D'Oliveiro wrote: > In message > c77d-4a47-8cb4-7dd916d69...@s1g2000prd.googlegroups.com>, 1x7y2z9 wrote: > > Not sure if this is defined in a later version, but it would be nice > > to define re.NONE = 0 in the re module. > > Do so: > > re.NONE = 0 > > Problem solved. It would be nice to have such a constant defined in the re module (make it standard). -- http://mail.python.org/mailman/listinfo/python-list
Re: launch a .py file from a batch file
Che M wrote: On Jun 23, 5:30 am, Paul Moore wrote: 2009/6/23 C M : Assuming you're running on Windows XP, try the following line in your batch file: @start path\MyPythonApp.pyw That's of course after you rename your script to a pyw extension. That's associated with pythonw, which doesn't need a command window. Well, I renamed my script to have a .pyw extension, and then ran the line above. Without quotes, it doesn't find it (because I have spaces in the path). With quotes it just opens a console and does nothing (does not launch the app). Any ideas? Use @start "" "path\MyPythonApp.pyw" The first item in quotes is the window title. If you only include the path (in quotes) it's taken as a title, which is why you need the second set of quotes. Paul. Unfortunately, when I try that it says "Windows cannot find [that file]", etc. And yet I am copying the filename right from the file manager and it IS there. What's also odd is that if I open the file using cd and then just putting the filename on the next line, that file (which I gave a .pyw extension) doesn't open, but a file that has a .py extension does. Any ideas? Thanks. Che If you run the xx.pyw file interactively, does it work? If not, perhaps the pyw file association is broken. It, along with the py association, should have been set up by the Python install. You can check it (and fix it) with assoc and ftype. Here's what mine look like: M:\>assoc .pyw .pyw=Python.NoConFile M:\>ftype Python.NoConFile Python.NoConFile="C:\ProgFiles\Python26\pythonw.exe" "%1" %* Or, as I said in an earlier message, you could explicitly specify the interpreter to be run on the start line. Something like: @start "notitle" "c:\ProgFiles\Python26\pythonw.exe" "path\script.pyw" -- http://mail.python.org/mailman/listinfo/python-list
Re: Trouble with running java using Popen
Edward Grefenstette wrote: I have a java prog I need to run at some point during the execution of a python module. The path to the folder containing the all the relevant java stuff (which runs fine from the command line) is stored in pkgpath. The relevant code is this: os.chdir(pkgpath) arglist = "java -Xmx1024m SemanticVectorsEvaluator ." + indexpath SemVectPackage = Popen(arglist, stdout=PIPE, shell=True) SemVectPackage.wait() Here indexpath is the path to a particular index file (usually indexpath = "./indexfolder/fileindex"), so that effectively Popen should be running the equivalent of the shell command: - java -Xmx1024m SemanticVectorsEvaluator ../indexfolder/fileindex - which, again, runs fine in the terminal. However running the program returns the following error (echoed from shell, doesn't interrupt prog): - Exception in thread "main" java.lang.NoClassDefFoundError: SemanticVectorsEvaluator - I have no idea why this isn't working. Anyone have any suggestions as to how I might troubleshoot this? Best, Edward = First glance shows you using ./ in code and ../in terminal. Might check that first. Second glance shows you using Popen vs popen (OK) but is that the correct stdout? It is the CHILD's stdout that is being requested here. (Probably what you had in mind, but ... is it?) Third item - running from the terminal usually loads the terminal environment. Running under program control may NOT load the environment. This is a particular problem in Window$. Is the difference going to effect your efforts? As for Java specific problems (if any) I don't know. Another might. Steve -- http://mail.python.org/mailman/listinfo/python-list
Re: Trouble with running java using Popen
On Tue, Jun 23, 2009 at 2:29 PM, Edward Grefenstette wrote: > I have a java prog I need to run at some point during the execution of > a python module. > > The path to the folder containing the all the relevant java stuff > (which runs fine from the command line) is stored in pkgpath. The > relevant code is this: > os.chdir(pkgpath) arglist = "java -Xmx1024m SemanticVectorsEvaluator ." + indexpath SemVectPackage = Popen(arglist, stdout=PIPE, shell=True) SemVectPackage.wait() > > Here indexpath is the path to a particular index file (usually > indexpath = "./indexfolder/fileindex"), so that effectively Popen > should be running the equivalent of the shell command: > - > java -Xmx1024m SemanticVectorsEvaluator ../indexfolder/fileindex > - > which, again, runs fine in the terminal. > > However running the program returns the following error (echoed from > shell, doesn't interrupt prog): > - > Exception in thread "main" java.lang.NoClassDefFoundError: > SemanticVectorsEvaluator > - > > I have no idea why this isn't working. Anyone have any suggestions as > to how I might troubleshoot this? Have you tried?: arglist = ["java", "-Xmx1024m", "SemanticVectorsEvaluator", "." + indexpath] SemVectPackage = Popen(arglist, stdout=PIPE) SemVectPackage.wait() Cheers, Chris -- http://blog.rebertia.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Trouble with running java using Popen
Edward Grefenstette schrieb: I have a java prog I need to run at some point during the execution of a python module. The path to the folder containing the all the relevant java stuff (which runs fine from the command line) is stored in pkgpath. The relevant code is this: os.chdir(pkgpath) arglist = "java -Xmx1024m SemanticVectorsEvaluator ." + indexpath SemVectPackage = Popen(arglist, stdout=PIPE, shell=True) SemVectPackage.wait() Here indexpath is the path to a particular index file (usually indexpath = "./indexfolder/fileindex"), so that effectively Popen should be running the equivalent of the shell command: - java -Xmx1024m SemanticVectorsEvaluator ../indexfolder/fileindex - which, again, runs fine in the terminal. However running the program returns the following error (echoed from shell, doesn't interrupt prog): - Exception in thread "main" java.lang.NoClassDefFoundError: SemanticVectorsEvaluator - I have no idea why this isn't working. Anyone have any suggestions as to how I might troubleshoot this? I'd say you got an CLASSPATH-issue here. You can add that explicitly via env as argument to Popen, or pass it via commandline-args. Diez -- http://mail.python.org/mailman/listinfo/python-list
Python 3.0.1 and mingw
I wanted to know if you have some patch to compile python 3.x on mingw platform because I found some but doesn't work very well : make gcc -o python.exe \ Modules/python.o \ libpython3.0.a-lm Could not find platform independent libraries Could not find platform dependent libraries Consider setting $PYTHONHOME to [:] Fatal Python error: Py_Initialize: can't initialize sys standard streams ImportError: No module named encodings.utf_8 I have some questions about posixmodule.c, config.c and makesetup, I can see in posixmodule that you define a INITFUNC like this : #if (defined(_MSC_VER) || defined(__WATCOMC__) || defined (__BORLANDC__)) && !defined(__QNX__) #define INITFUNC PyInit_nt #define MODNAME "nt" #elif defined(PYOS_OS2) #define INITFUNC PyInit_os2 #define MODNAME "os2" #else #define INITFUNC PyInit_posix #define MODNAME "posix" #endif So first I tried to add || defined(MINGW32) to declare a PyInit_nt but after config.c was still using PyInit_posix. How does makesetup choose to include one function or another ? So finally python is using PyInit_posix... and after any idea why I got the compilation error ? -- http://mail.python.org/mailman/listinfo/python-list
IDLE / Python 2.5 under Jaunty
A little off-topic perhaps, but I can't think of anywhere more likely to contain people with answers. I've just upgraded to Jaunty Jackalope where Python 2.6 is the default Python version. I'm still developing under 2.5, but IDLE now refuses to respond to left click events (for code editing, menus etc. respond as expected). If I right click, then left click I can move the cursor, but that's not ideal. I've tried SPE which is great, but I can't find a way of configuring the Python version, so I'm stuck with a 2.6 shell. I've had limited success with Boa Constructor (which defaulted to Python 2.6 and wxPython 2.6). By renaming a symlink (/usr/lib/python2.5/site-packages/wx-2.6-gtk2-unicode.pth) I managed to get the wx version for Python 2.5 to default to 2.8.9.1. I've pointed Boa at 2.5 using the interpreter chooser, but the Boa frame designer still appears to expect wxPython 2.6 (it finds "errors" in my code and refuses to fire up). So, has anybody else had the left click issue with IDLE (and solved it)? Does anyone know how I can configure Boa to use wxPython 2.8.9.1? Does anyone know if it's possible to configure the Python version under SPE? Cheers. Duncan -- http://mail.python.org/mailman/listinfo/python-list
Re: C-extension 2 times slower than exe
On Jun 23, 7:20 am, Rolf Wester wrote: > Philip Semanchuk wrote: > > > On Jun 23, 2009, at 9:51 AM, Rolf Wester wrote: > > >> Hi, > > >> I have a C++ program that I would like to steer using Python. I made the > >> wrapper using swig and linked the code (without the main function) into > >> a shared object. My Python script loads the extension and calls a > >> function of the C-extension, the rest runs entirely within the > >> C-extension. For comparison I compiled the code including the main > >> function with the same compilation options and linked all into an exe. > >> The main function of the exe calls the same function as my Python script > >> does. Surprisingly the code in the Python C-extension runs twice as long > >> as the same code in the exe. Does anyone know what could be the reason > >> for this behaviour? > > > If the runtime of the C/C++ code is short, the time spent initializing > > the Python interpreter might have a big impact on the runtime of the > > Python version. > > The runtime is about 2.5 sec and 5.0 sec respectively. I not only use > the time command to measure the time consumed but I also measure the > time within the C-code using clock() and get similar result. So the > Python startup time is not the reason for the runtime difference I > found. Thank you anyway. We can't really help you much unless you give us more details about what you did (how did you built it, how did you time it, and how are you calling the C extension from Python). All we can do is throw out possible ideas, and I will toss out a few, but if that's not it you'll have to post details. Are you building the extension with the same optimization flags as the compiler? Are you calling the C code repeatedly from inside a Python loop? -- http://mail.python.org/mailman/listinfo/python-list
Forwarding keyword arguments
Suppose I have 2 functions like so: def Function2( **extra ): # do stuff def Function1( **extra ): Function2( extra ) As you can see, I would like to forward the additional keyword arguments in variable 'extra' to Function2 from Function1. How can I do this? I'm using Python 3.0.1 -- http://mail.python.org/mailman/listinfo/python-list
Re: IDLE / Python 2.5 under Jaunty
On Wed, 24 Jun 2009 00:55:14 +0100, duncan smith wrote: > Does anyone know how I can configure Boa to use wxPython 2.8.9.1? Does > anyone know if it's possible to configure the Python version under SPE? It definitely is possible. In fact you need to use wxpython 2.8 with Boa. I had a similar problem under some ubuntu version. You can install 2.6 and 2.8 wxpython. But from memory there is a wxversion ubuntu package also. I had to do some "force"ing as there seemed to be circular dependencies. In the end I got it to work just fine... David -- http://mail.python.org/mailman/listinfo/python-list
Re: Forwarding keyword arguments
> Suppose I have 2 functions like so: > > def Function2( **extra ): > # do stuff > > def Function1( **extra ): > Function2( extra ) > > As you can see, I would like to forward the additional keyword > arguments in variable 'extra' to Function2 from Function1. How can I > do this? I'm using Python 3.0.1 def Function1(**extra): Function2(**extra) --S -- http://mail.python.org/mailman/listinfo/python-list
Re: Forwarding keyword arguments
En Tue, 23 Jun 2009 20:57:36 -0300, Robert Dailey escribió: Suppose I have 2 functions like so: def Function2( **extra ): # do stuff def Function1( **extra ): Function2( extra ) As you can see, I would like to forward the additional keyword arguments in variable 'extra' to Function2 from Function1. How can I do this? I'm using Python 3.0.1 Function2(**extra) See http://docs.python.org/3.0/reference/expressions.html#calls -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
Re: Forwarding keyword arguments
On Jun 23, 7:34 pm, "Gabriel Genellina" wrote: > En Tue, 23 Jun 2009 20:57:36 -0300, Robert Dailey > escribió: > > > Suppose I have 2 functions like so: > > > def Function2( **extra ): > > # do stuff > > > def Function1( **extra ): > > Function2( extra ) > > > As you can see, I would like to forward the additional keyword > > arguments in variable 'extra' to Function2 from Function1. How can I > > do this? I'm using Python 3.0.1 > > Function2(**extra) > Seehttp://docs.python.org/3.0/reference/expressions.html#calls > > -- > Gabriel Genellina Thanks for the answer. I did look through the docs but I missed it I guess. -- http://mail.python.org/mailman/listinfo/python-list
Re: Forwarding keyword arguments
Robert Dailey writes: > Suppose I have 2 functions like so: > > def Function2( **extra ): ># do stuff > > def Function1( **extra ): >Function2( extra ) (Style note: The Python style guide, PEP 8, would have the above code written as:: def function2(**extra): # do stuff def function1(**extra): function2(extra) See http://www.python.org/dev/peps/pep-0008> for a sensible style guide for Python code.) > As you can see, I would like to forward the additional keyword > arguments in variable 'extra' to Function2 from Function1. How can I > do this? I'm using Python 3.0.1 The syntax for “collect remaining positional arguments into a sequence” in a function definition versus “unpack the values from this sequence into positional arguments” in a function call are intentionally similar:: def bar(spam, eggs, beans): pass def foo(*args): bar(*args) Likewise for the syntax for “collect remaining keyword arguments into a mapping” in a function definition versus “unpack the items from this mapping into keyword arguments” in a function call:: def function2(spam, eggs, beans): pass def function1(**kwargs): function2(**kwargs) For more detail, see the language reference section explaining calls http://docs.python.org/reference/expressions.html#calls>. -- \ “A society that will trade a little liberty for a little order | `\ will lose both, and deserve neither.” —Thomas Jefferson, in a | _o__)letter to Madison | Ben Finney -- http://mail.python.org/mailman/listinfo/python-list
Re: [Mac] file copy
Tobias Weber wrote: > Why "so"? shutil does not use bin/cp! That's good to know. I had always thought that that was what shutils did, but you're right; it does not. That said, since cp indeed *can* copy resource forks on Tiger and up, you could use subprocess to call it. Just as an aside, your response to a couple of the suggestions in this thread has been a bit brusque, even given the normal limits of e-mail communications. While it's true that nothing so far has been quite what you wanted, I'm sure that everyone has certainly tried to help you find a solution by throwing out different ideas! It is also true that for many people resources forks are not at all necessary, which is probably why someone mentioned that before, perhaps hoping to save you work. Anyways, I certainly hope you do get something working. -- http://mail.python.org/mailman/listinfo/python-list
Re: walking a directory with very many files
On Tue, 23 Jun 2009 10:29:21 -0400, Mel wrote: > Steven D'Aprano wrote: > >> Lawrence D'Oliveiro wrote: >> Ok, now pipe ls to less, take three days to browse through all the filenames to locate the file you want to see. >>> >>> Sounds like you're approaching the issue with a GUI-centric mentality, >>> which is completely hopeless at dealing with this sort of situation. >> >> Piping the output of ls to less is a GUI-centric mentality? > > Yeah. The "dump it on the user" idea, or more politely "can't decide > anything until the user has seen everything" is evident in the most > "characteristic" GUIs. Perhaps you're using different GUIs to me. In my experience, most GUIs tend to *hide* data from the user rather than give them everything under the sun. The classic example is Windows, which hides certain files in the GUI file manager even if you tell it to show all files. -- Steven -- http://mail.python.org/mailman/listinfo/python-list
Re: Trouble with running java using Popen
Bingo. I was running the python script in GNU script, and it wasn't loading my bash config file properly. Have fixed it by altering .screenrc and now the code runs fine. Would have never guessed to look if you hadn't mentioned it, cheers! Best, Ed On Jun 23, 11:29 pm, "Diez B. Roggisch" wrote: > Edward Grefenstette schrieb: > > > > > I have a java prog I need to run at some point during the execution of > > a python module. > > > The path to the folder containing the all the relevant java stuff > > (which runs fine from the command line) is stored in pkgpath. The > > relevant code is this: > > os.chdir(pkgpath) > arglist = "java -Xmx1024m SemanticVectorsEvaluator ." + indexpath > SemVectPackage = Popen(arglist, stdout=PIPE, shell=True) > SemVectPackage.wait() > > > Here indexpath is the path to a particular index file (usually > > indexpath = "./indexfolder/fileindex"), so that effectively Popen > > should be running the equivalent of the shell command: > > - > > java -Xmx1024m SemanticVectorsEvaluator ../indexfolder/fileindex > > - > > which, again, runs fine in the terminal. > > > However running the program returns the following error (echoed from > > shell, doesn't interrupt prog): > > - > > Exception in thread "main" java.lang.NoClassDefFoundError: > > SemanticVectorsEvaluator > > - > > > I have no idea why this isn't working. Anyone have any suggestions as > > to how I might troubleshoot this? > > I'd say you got an CLASSPATH-issue here. You can add that explicitly via > env as argument to Popen, or pass it via commandline-args. > > Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: Measuring Fractal Dimension ?
In article , Mark Dickinson wrote: >On Jun 22, 7:43=A0pm, David C. Ullrich wrote: >> >> Surely you don't say a curve is a subset of the plane and >> also talk about the integrals of verctor fields over _curves_? >> [snip rest of long response that needs a decent reply, but >> possibly not here... ] > >I wonder whether we can find a better place to have this discussion; I >think there are still plenty of interesting things to say, but I fear >we're rather abusing the hospitality of comp.lang.python at the moment. As long as it's confined to this thread, I certainly have no objection; right now, this thread is occupying only a small fractin of c.l.py bandwidth. -- Aahz (a...@pythoncraft.com) <*> http://www.pythoncraft.com/ "as long as we like the same operating system, things are cool." --piranha -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 3.0.1 and mingw
On 24 Jun., 00:59, smartmobili wrote: > I wanted to know if you have some patch to compile python 3.x on mingw > platform because I found some > but doesn't work very well : > > make > > gcc -o python.exe \ > Modules/python.o \ > libpython3.0.a-lm > Could not find platform independent libraries > Could not find platform dependent libraries > Consider setting $PYTHONHOME to [:] > Fatal Python error: Py_Initialize: can't initialize sys standard > streams > ImportError: No module named encodings.utf_8 > > I have some questions about posixmodule.c, config.c and makesetup, > I can see in posixmodule that you define a INITFUNC like this : > > #if (defined(_MSC_VER) || defined(__WATCOMC__) || defined > (__BORLANDC__)) && > !defined(__QNX__) > #define INITFUNC PyInit_nt > #define MODNAME "nt" > > #elif defined(PYOS_OS2) > #define INITFUNC PyInit_os2 > #define MODNAME "os2" > > #else > #define INITFUNC PyInit_posix > #define MODNAME "posix" > #endif > > So first I tried to add || defined(MINGW32) to declare a > PyInit_nt > but after config.c > was still using PyInit_posix. How does makesetup choose to include one > function or another ? > So finally python is using PyInit_posix... > > and after any idea why I got the compilation error ? Why on earth do you want to compile Python 3.0.1? -- http://mail.python.org/mailman/listinfo/python-list
Re: Beauty and Fitness
In article <7a73lrf1totc...@mid.uni-berlin.de>, Diez B. Roggisch wrote: > >My god, these days they allow just anybody to spam, even f***tards that >are to stupid to include the actual URL of the spam they want to divulge. Thank you for reposting the spam in its entirety, with special thanks for munging your address so I can't even chide you privately. -- Aahz (a...@pythoncraft.com) <*> http://www.pythoncraft.com/ "as long as we like the same operating system, things are cool." --piranha -- http://mail.python.org/mailman/listinfo/python-list
Re: urllib2 urlopen takes too much time
In article , =?UTF-8?Q?Filip_Gruszczy=C5=84ski?= wrote: > >I have encountered a performance problem using suds, which was traced >down to _socket.recv. I am calling some web services and each of them >uses about 0.2 sec and 99% of this time is spent on urllib2.urlopen, >while the rest of the call is finished in milliseconds. What happens if you use urlopen() by itself? -- Aahz (a...@pythoncraft.com) <*> http://www.pythoncraft.com/ "as long as we like the same operating system, things are cool." --piranha -- http://mail.python.org/mailman/listinfo/python-list
Re: Meta question: disappearing posts (was Re: calculating a self.value, self.randomnum = normalvariate(x, y))
In article , Ross Ridge wrote: >Aahz wrote: >>Piet van Oostrum wrote: >>> I notice that I see several postings on news:comp.lang.python that are >>>replies to other postings that I don't see. >> >>As stated previously, my suspicion is that at least some is caused by a >>problem with MIME messages and the mail->news gateway on python.org. > >I'm not sure what MIME would have to do with it, but Piet van Oostrum's >problem is almost certainly as result of the python.org mail to news >gateway mangling the References header. The missing postings he's looking >for don't actually exist. Just go up the thread one more posting and >you'll find the message that was being replied to. While that's also a bug in Mailman (I have a long-standing to-do item to fix that), there are also plenty of posts that simply aren't showing up in c.l.py. As I said, I'm pretty sure (based on what was happening with c.l.py.announce) that it's some kind of weird problem with the mail->news gateway with MIME posts. -- Aahz (a...@pythoncraft.com) <*> http://www.pythoncraft.com/ "as long as we like the same operating system, things are cool." --piranha -- http://mail.python.org/mailman/listinfo/python-list
Re: IDLE / Python 2.5 under Jaunty
duncan smith wrote: > I've just upgraded to Jaunty Jackalope where Python 2.6 is the default > Python version. I'm still developing under 2.5, but IDLE now refuses to > respond to left click events (for code editing, menus etc. respond as > expected). If I right click, then left click I can move the cursor, but > that's not ideal. For the meantime, you should search/file a bug report on Launchpad (Ubuntu's bugtracker) on: https://launchpad.net/ubuntu/ if you haven't already done so. I just tried idle 2.6 (python 2.6, Tk 8.4) on Gentoo, and left-clicking seems to run fine (although I'm a bit unclear on what kinds of left-clicking IDLE refuses to respond to). On the reports to Launchpad, don't forget to include the versions of python, idle, and Tk as reported on Help > About. -- http://mail.python.org/mailman/listinfo/python-list
Re: generator expression works in shell, NameError in script
On Jun 18, 10:49 am, Jon Clements wrote: > Why are you doing this? I'm assuming a code to title look up is > required (don't forget military, royal and honorable titles > etc... :) ) I'm in New Zealand. Hardly any need for military titles, rarely any for royal and damn sure none for honorable :-D (scnr) -- http://mail.python.org/mailman/listinfo/python-list
Best way to enumerate classes in a module
I need to programmaticaly enumerate all the classes in a given module. Currently I'm using dir(module) but the Notice on the documentation page [1] says "dir() is supplied primarily as a convenience for use at an interactive prompt" so that kind of scares me. Is there a better approach? If there is, how do I get all the classes of the current module? [1] http://docs.python.org/library/functions.html#dir -- дамјан ( http://softver.org.mk/damjan/ ) Q: What's tiny and yellow and very, very, dangerous? A: A canary with the super-user password. -- http://mail.python.org/mailman/listinfo/python-list
Re: walking a directory with very many files
In message , Steven D'Aprano wrote: > On Tue, 23 Jun 2009 10:29:21 -0400, Mel wrote: > >> Steven D'Aprano wrote: >> >>> Lawrence D'Oliveiro wrote: >>> > Ok, now pipe ls to less, take three days to browse through all the > filenames to locate the file you want to see. Sounds like you're approaching the issue with a GUI-centric mentality, which is completely hopeless at dealing with this sort of situation. >>> >>> Piping the output of ls to less is a GUI-centric mentality? >> >> Yeah. The "dump it on the user" idea, or more politely "can't decide >> anything until the user has seen everything" is evident in the most >> "characteristic" GUIs. > > Perhaps you're using different GUIs to me. In my experience, most GUIs > tend to *hide* data from the user rather than give them everything under > the sun. Which is getting a bit away from what we're discussing here, but certainly it is characteristic of GUIs to show you all 400,000 files in a directory, or at least try to do so, and either hang for half an hour or run out of memory and crash, rather than give you some intelligent way of prefiltering the file display up front. -- http://mail.python.org/mailman/listinfo/python-list
Re: I look for private Python Index server on my local network... What do you use ?
Klein Stéphane wrote: I wonder what Python Index server (like as pypi.python.org) do you use in your corporation for handle your private python eggs ? I found three solutions : * http://pypi.python.org/pypi/basketweaver/0.1.2-r6 * http://pypi.python.org/pypi/pypi/2005-08-01 * http://pypi.python.org/pypi/EggBasket/0.6.1b Do you know another software ? http://pypi.python.org/pypi/haufe.eggserver/0.2.5 What do you use ? I actually just store the private eggs directly in a subversion repository and that the url of the folder the eggs live in to find-links. cheers, Chris -- Simplistix - Content Management, Zope & Python Consulting - http://www.simplistix.co.uk -- http://mail.python.org/mailman/listinfo/python-list
Re: Tutorial on working with Excel files in Python (without COM and crossplatform!) at EuroPython 2009
Jeremiah Jester wrote: Chris, Do you have any online tutorial for this topic? I'm afraid not currently... Chris -- Simplistix - Content Management, Zope & Python Consulting - http://www.simplistix.co.uk -- http://mail.python.org/mailman/listinfo/python-list
Re: Best way to enumerate classes in a module
Дамјан Георгиевски wrote: > I need to programmaticaly enumerate all the classes in a given module. > Currently I'm using dir(module) but the Notice on the documentation page > [1] says "dir() is supplied primarily as a convenience for use at an > interactive prompt" so that kind of scares me. > > Is there a better approach? > > If there is, how do I get all the classes of the current module? inspect.getmembers(module, inspect.isclass), but this uses dir() internally. You may have to remove imported classes: >>> def getclasses(module): ... def accept(obj): ... return inspect.isclass(obj) and module.__name__ == obj.__module__ ... return [class_ for name, class_ in inspect.getmembers(module, accept)] ... >>> getclasses(inspect) [, , ...] Peter -- http://mail.python.org/mailman/listinfo/python-list
