ANN: bridge 0.1.0 a general Python and IronPython XML library
Hi all, I'm happy to introduce the first release of bridge. A general purpose XML library for Python and IronPython (and ultimately Jython). bridge is very simple and light. It basically let you load an XML document via a set of different parsers (xml.dom, Amara, lxml, System.Xml) and creates a tree of Elements and Attributes before releasing the parser resources. This means that once the document is loaded it is independent from the underlying parser. bridge then provides a straightforward interface to navigate through the tree and manipulate it. bridge does not try to replace underlying XML engines but offer a common API so that your applications are less dependent of those engines. bridge offers a couple of other goodies however to play with the tree of elements (see the documentation). == Download == * easy_install -U bridge * Tarballs http://www.defuze.org/oss/bridge/ * svn co https://svn.defuze.org/oss/bridge/ == Documentation == http://trac.defuze.org/wiki/bridge Hope this will help a few people in working with XML without worrying on which engine they choose to use. Have fun, -- Sylvain Hellegouarch http://www.defuze.org -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
PyPE 2.7.2 released
=== What is PyPE? === PyPE (Python Programmers' Editor) was written in order to offer a lightweight but powerful editor for those who think emacs is too much and idle is too little. Syntax highlighting is included out of the box, as is multiple open documents via tabs. Beyond the basic functionality, PyPE offers an expandable source tree, filesystem browser, draggable document list, todo list, filterable function list, find and replace bars (no dialog to find or replace simple strings), recordable and programmable macros, spell checker, reconfigurable menu hotkeys, triggers, find in files, external process shells, and much more. === More Information === If you would like more information about PyPE, including screenshots, where to download the source or windows binaries, bug tracker, contact information, or a somewhat complete listing of PyPE's features, visit PyPE's home on the web: http://pype.sf.net/index.shtml If you have any questions about PyPE, please contact me, Josiah Carlson, aka the author of PyPE, at [EMAIL PROTECTED] . PyPE 2.7.2 includes the following changes and bugfixes since release 2.7.1: (changed) files with at least 20,000 lines or at least 4 megs will no longer have their bookmark or fold states saved on close. This significantly reduces the time to close (and sometimes open) large files. (fixed) code that uses MainWindow.exceptDialog() will now properly create a dialog. (fixed) wxPython 2.7 incompatability in the Browsable directory tree in wxPython 2.7 - 2.7.1.2 . (removed) some unnecessary debug printouts. (changed) the 'Search' tab to better handle narrower layouts. (fixed) the 'Ignore .subdirs' option in the 'Search' tab now gets disabled along with 'Search Subdirectories' when applicable. (fixed) error when opening changelog.txt on unicode-enabled installations. (fixed) spell checker for unicode-enabled platforms. (fixed) case where various checkmarks in the Documents menu wouldn't update when a document was opened, closed, or created on some platforms. (added) --font= command line option for choosing the font that the editor will use. -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
Re: ANN: SE 2.3. Available now
Fredrik Lundh wrote: Frederic Rentsch wrote: And here's the proof I am being perceived as a nuisance. I apologize, keeping to myself that I don't care. since you're constantly targeting newbies, and are hawking your stuff also for things for which there are simple and efficient solutions available in Python's standard library, your behavior could be seen as more than just a nuisance. /F Thank you for making me aware of it. I totally agree with you that inefficient complexity should never replace efficient simplicity. SE, in fact, is much more a convenient interface complement than a stand-alone tool and as such meant to cooperate with the available Python idiom. I used this forum to connect with real-life problems, which I believe is one of its main purposes. Testing the envelope of my 'stuff' I would almost certainly have overstretched it on occasion. And again, what's wrong with this absolutely normal development process? And what better environment could there be for it than an interest group like this one where experts like yourself offer direction? I am not targeting newbies (whatever that is). I am not targeting at all. I invite response. You had cause to respond as this message of yours reveals. But you didn't respond and now your are angry with me for it. So, thanks again for the information. Your comments are always welcome. I understand your style as an expression of your personality. Belligerence passes my notice if I don't see what I have to do with it. Regards Frederic -- http://mail.python.org/mailman/listinfo/python-list
Re: Sorted and reversed on huge dict ?
[EMAIL PROTECTED] wrote: Klaas i do not know about intern construct, i will have look, but when googling the description in the documentation is pretty concise, I think: http://effbot.org/pyref/intern /F -- http://mail.python.org/mailman/listinfo/python-list
Re: Defaultdict and speed
Klaas wrote:
Benchmarks?
There is one (fixed in a succesive post) in the original thread I was
referring to:
http://groups.google.com/group/it.comp.lang.python/browse_thread/thread/aff60c644969f9b/
If you want I can give more of them (and a bit less silly, with strings
too, etc).
def ddict(n):
t = clock()
d = defaultdict(int)
for i in xrange(n):
d[i] += 1
print round(clock()-t, 2)
def ndict(n):
t = clock()
d = {}
for i in xrange(n):
if i in d:
d[i] += 1
else:
d[i] = 1
print round(clock()-t, 2)
ddict(30)
ndict(30)
(and slowing down other uses of the class)
All it has to do is to cheek if the default_factory is an int, it's
just an if done only once, so I don't think it slows down the other
cases significantly.
especially when the faster alternative is so easy to code.
The faster alternative is easy to create, but the best faster
alternative can't be coded, because if you code it in Python you need
two hash accesses, while the defaultdict can require only one of them:
if n in d:
d[n] += 1
else:
d[n] = 1
If that performance difference matters,
With Python it's usually difficult to tell if some performance
difference matters. Probably in some programs it may matter, but in
most other programs it doesn't matter. This is probably true for all
the performance tweaks I may invent in the future too.
you would likely find more fruitful
gains in coding it in c, using PyDict_SET
I've just started creating a C lib for related purposes, I'd like to
show it to you all on c.l.p, but first I have to find a place to put it
on :-) (It's not easy to find a suitable place, it's a python + c +
pyd, and it's mostly an exercise).
Bye,
bearophile
--
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small python cgi webserver
Hi,
I am looking for a small python script, which starts a small
web server with python cgi support on a linux machine.
I tried:
#!/usr/bin/env python
import sys
from CGIHTTPServer import CGIHTTPRequestHandler
import BaseHTTPServer
class MyRequestHandler(CGIHTTPRequestHandler):
# In diesem Verzeichnis sollten die CGI-Programme stehen:
cgi_directories=[/home/fab/Desktop/cgi-bin]
def run():
# 8000=Port-Nummer
# -- http://localhost:8000/
# Fuer http://localhost/
# Port-Nummer auf 80 setzen
httpd=BaseHTTPServer.HTTPServer(('', 8000), MyRequestHandler)
httpd.serve_forever()
if __name__==__main__:
print Starting Server
run()
but when I want to test a small python cgi test file:
#!/usr/bin/python
# -*- coding: UTF-8 -*-
# Debugging fÃŒr CGI-Skripte 'einschalten'
import cgitb; cgitb.enable()
print Content-Type: text/html;charset=utf-8\n
print Hello World!
I just get the text and not the html output. The file's mode
is 755.
Is there anything wrong with the webserver script or do I do
something completely wrong? Maybe, you have a different
webserver script?
Greetings!
Fabian
--
http://mail.python.org/mailman/listinfo/python-list
Re: Programming Language that is Spreadsheet/Table Based
Gerard Flanagan wrote:
py # the following is probably the trickiest, should it return a Table
py # should it be illegal?
py # should t['Last'] be the way to take the slice and get the col?
py t[None, 'Last'] # 1d slice returns list (2nd dim. explicit)
['Barker', 'Burnet', 'Danson', 'Cooper']
I can imagine manipulating columns at the Table creation stage -
insert, append, delete column - but after that I think you would be
dealing with rows more often. Personally, if I needed columns I would
be happier with a list comprehension:
[ (row['Last'], row['Age']) for row in t ]
etc.
To make a table from list comprehension in this way seems like it would
require some redundancy because a list comprehension only gets you a
list (of rows or lists). It seems if you wanted to work with your 2d
selection of data, then you would want to get a table back:
data = [ (row['Last'], row['Age']) for row in t ]
t2 = Table(('Last','Age'), data)
This seems, to me, to separates selection in the 2 dimensions and makes
it backwards:
data = [ (row['Last'], row['Age']) for row in t[1:3]]
t2 = Table(('Last','Age'), data)
So a function would be needed to group the selection in a way that
reflects the organization of the table:
t2 = t.subtable((1,3), ('Last','Age'))
But then, since the latter seems a natural consequence of using list
comprehension for selection, how might one distinguish a range of
columns if not by a verbose function name?
t2 = t.subtable_with_column_range((1,3), ('Last','Age'))
The concept of slicing seems to take care of this. Maybe
t2 = t.subtable(slice(1,3), slice('Last','Age'))
But this begins to seem awkward and verbose to boot. Any suggestions on
adapting your idea of list comprehension to generate subtables?
eg. like:
http://buzhug.sourceforge.net/
py t2 = t[1:3, ('First', 'Age')] # 2d slice returns a new Table
py t3 = t[1:3,'First':'Age'] # shorthand to take a swath of columns
py t3 = t[1:3, 0:2] # if we know what column numbers we want instead
t[1:3][0:2] and so on would be more intuitive to me, possibly
t[1:3]['First':'Age']
This looks better than my slicing, and to argue with it I'd have to
break my own rules and point out that it would require making an
intermediate table in the implementation. I am emulating numarray
slicing closely, which itself is probably focused on implementation and
speed.
James
--
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Re: PySchool - Online Python Web Framework Workshop.
RobJ wrote: Hi! My Name is Rob Johnson and I am a graduate student at The Richard Stockton College of NJ. To make a long story short, I'm working on my Masters project in the MAIT program (Masters of Arts in Instructional Technology). I have written a proposal to put together a free on-line Python web framework workshop. The workshop will be geared to help people new to Python web frameworks. I am asking for the community's assistance to help me get this project off the ground. As part of my project, I am conducting a survey for people who are interested in learning more about python web frameworks. The survey is located at http://killersurvey.com/answer_survey.php?id=479. I have also started a blog about this experience in order to let people know what I'm doing (http://pyschool.blogspot.com/). If you have a few minutes, please take a couple of minutes to take the quick survey. The survey is anonymous and the information will be used for statistics for my project. Also, any constructive feedback or suggestions that you can give me would be gladly appreciated. Thanks Rob J Q9 should be check all that apply or otherwise qualified with primarily. Q10 is missing other types of broadband such as what one might find at school, and also have the option of multiple selections. -- http://mail.python.org/mailman/listinfo/python-list
Re: small python cgi webserver
Fabian Braennstroem wrote:
Hi,
I am looking for a small python script, which starts a small
web server with python cgi support on a linux machine.
I tried:
#!/usr/bin/env python
import sys
from CGIHTTPServer import CGIHTTPRequestHandler
import BaseHTTPServer
class MyRequestHandler(CGIHTTPRequestHandler):
# In diesem Verzeichnis sollten die CGI-Programme stehen:
cgi_directories=[/home/fab/Desktop/cgi-bin]
def run():
# 8000=Port-Nummer
# -- http://localhost:8000/
# Fuer http://localhost/
# Port-Nummer auf 80 setzen
httpd=BaseHTTPServer.HTTPServer(('', 8000), MyRequestHandler)
httpd.serve_forever()
if __name__==__main__:
print Starting Server
run()
but when I want to test a small python cgi test file:
#!/usr/bin/python
# -*- coding: UTF-8 -*-
# Debugging für CGI-Skripte 'einschalten'
import cgitb; cgitb.enable()
print Content-Type: text/html;charset=utf-8\n
print Hello World!
I just get the text and not the html output. The file's mode
is 755.
Is there anything wrong with the webserver script or do I do
something completely wrong? Maybe, you have a different
webserver script?
Greetings!
Fabian
Probably the server is not executing your CGI script. If it is the
Apache web server that you are using then just ensure the following
settings in your /etc/httpd/conf/httpd.conf file is exactly like
following:
Directory /var/www/cgi-bin
AllowOverride None
Options ExecCGI
Order allow,deny
Allow from all
/Directory
--
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Re: Sorted and reversed on huge dict ?
Paul Rubin http wrote: is there a good way to know how much ram is used directly from python (or should i rely on 'top' and other unix command? I think try resource.getrusage() That should work (under BSD anyway) but unfortunately doesn't under linux :-( From the man page CONFORMING TO SVr4, 4.3BSD. POSIX.1-2001 specifies getrusage(), but only specifies the fields ru_utime and ru_stime. and The above struct was taken from 4.3BSD Reno. Not all fields are mean- ingful under Linux. In linux 2.4 only the fields ru_utime, ru_stime, ru_minflt, and ru_majflt are maintained. Since Linux 2.6, ru_nvcsw and ru_nivcsw are also maintained. Ie none of the memory based ones are filled in. This linux only code works though :- def memory_used(): Return the memory used by this process under linux in bytes return int(file(/proc/self/statm).read().split()[0]) * resource.getpagesize() Eg import resource def memory_used(): ... return int(file(/proc/self/statm).read().split()[0]) * resource.getpagesize() ... print memory_used() 4575232 a=1000*x print memory_used() 14577664 If anyone knows a (unix) portable way of doing this I'd be interested! -- Nick Craig-Wood [EMAIL PROTECTED] -- http://www.craig-wood.com/nick -- http://mail.python.org/mailman/listinfo/python-list
Re: small python cgi webserver
Hi,
* ArdPy [EMAIL PROTECTED] wrote:
Fabian Braennstroem wrote:
Hi,
I am looking for a small python script, which starts a small
web server with python cgi support on a linux machine.
I tried:
#!/usr/bin/env python
import sys
from CGIHTTPServer import CGIHTTPRequestHandler
import BaseHTTPServer
class MyRequestHandler(CGIHTTPRequestHandler):
# In diesem Verzeichnis sollten die CGI-Programme stehen:
cgi_directories=[/home/fab/Desktop/cgi-bin]
def run():
# 8000=Port-Nummer
# -- http://localhost:8000/
# Fuer http://localhost/
# Port-Nummer auf 80 setzen
httpd=BaseHTTPServer.HTTPServer(('', 8000), MyRequestHandler)
httpd.serve_forever()
if __name__==__main__:
print Starting Server
run()
but when I want to test a small python cgi test file:
#!/usr/bin/python
# -*- coding: UTF-8 -*-
# Debugging für CGI-Skripte 'einschalten'
import cgitb; cgitb.enable()
print Content-Type: text/html;charset=utf-8\n
print Hello World!
I just get the text and not the html output. The file's mode
is 755.
Is there anything wrong with the webserver script or do I do
something completely wrong? Maybe, you have a different
webserver script?
Greetings!
Fabian
Probably the server is not executing your CGI script. If it is the
Apache web server that you are using then just ensure the following
settings in your /etc/httpd/conf/httpd.conf file is exactly like
following:
Directory /var/www/cgi-bin
AllowOverride None
Options ExecCGI
Order allow,deny
Allow from all
/Directory
Maybe, I understood something wrong, but I thought that the
above 'webserver' script would replace apache in my case; at
least I hoped!?
Greetings!
Fabian
--
http://mail.python.org/mailman/listinfo/python-list
Re: Programming Language that is Spreadsheet/Table Based
James Stroud wrote:
Gerard Flanagan wrote:
py # the following is probably the trickiest, should it return a Table
py # should it be illegal?
py # should t['Last'] be the way to take the slice and get the col?
py t[None, 'Last'] # 1d slice returns list (2nd dim. explicit)
['Barker', 'Burnet', 'Danson', 'Cooper']
I can imagine manipulating columns at the Table creation stage -
insert, append, delete column - but after that I think you would be
dealing with rows more often. Personally, if I needed columns I would
be happier with a list comprehension:
[ (row['Last'], row['Age']) for row in t ]
etc.
To make a table from list comprehension in this way seems like it would
require some redundancy because a list comprehension only gets you a
list (of rows or lists). It seems if you wanted to work with your 2d
selection of data, then you would want to get a table back:
data = [ (row['Last'], row['Age']) for row in t ]
t2 = Table(('Last','Age'), data)
This seems, to me, to separates selection in the 2 dimensions and makes
it backwards:
data = [ (row['Last'], row['Age']) for row in t[1:3]]
t2 = Table(('Last','Age'), data)
So a function would be needed to group the selection in a way that
reflects the organization of the table:
t2 = t.subtable((1,3), ('Last','Age'))
But then, since the latter seems a natural consequence of using list
comprehension for selection, how might one distinguish a range of
columns if not by a verbose function name?
t2 = t.subtable_with_column_range((1,3), ('Last','Age'))
The concept of slicing seems to take care of this. Maybe
t2 = t.subtable(slice(1,3), slice('Last','Age'))
But this begins to seem awkward and verbose to boot. Any suggestions on
adapting your idea of list comprehension to generate subtables?
What about symmetric 'load' and 'iterrows' methods for the Table class:
t2 = Table()
t2.load( t1.iterrows(LastName, Age) )
def load(self, iterable):
'''expecting tuples'''
for lname, age in iterable:
self.append( lname, age )
def iterrows(self, *args):
'''returns a generator which itself returns tuples
filtered by the column names in *args (via
operator.itemgetter maybe?)'''
There might be some value in comparing Microsoft's DataSet API. IIRC,
you typically have:
*UI* - DataView - DataSet - DataAdapter - *DATABASE*
A DataSet is a collection of DataTables and has a lot of DB/XML
functionality and so on. A DataView on the other hand is more
lightweight and has mainly filtering and sorting functions and is
designed to be bound to a GUI widget such as a DataGrid.
You might have something along the lines of:
ds = DataSet()
# fill ds from datasource
dt_customers = ds.tables[customers]
view = DataView( dt_customers )
view.rowfilter = lastname LIKE 'A*' and Age 60
I'm not saying imitate this, but maybe some value in studying the
OO-bondage approach.
All the best
Gerard
--
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Re: Programming Language that is Spreadsheet/Table Based
Gerard Flanagan wrote: What about symmetric 'load' and 'iterrows' methods for the Table class: t2 = Table() t2.load( t1.iterrows(LastName, Age) ) def load(self, iterable): '''expecting tuples''' for lname, age in iterable: self.append( lname, age ) def iterrows(self, *args): '''returns a generator which itself returns tuples filtered by the column names in *args (via operator.itemgetter maybe?)''' There might be some value in comparing Microsoft's DataSet API. IIRC, you typically have: *UI* - DataView - DataSet - DataAdapter - *DATABASE* A DataSet is a collection of DataTables and has a lot of DB/XML functionality and so on. A DataView on the other hand is more lightweight and has mainly filtering and sorting functions and is designed to be bound to a GUI widget such as a DataGrid. You might have something along the lines of: ds = DataSet() # fill ds from datasource dt_customers = ds.tables[customers] view = DataView( dt_customers ) view.rowfilter = lastname LIKE 'A*' and Age 60 I'm not saying imitate this, but maybe some value in studying the OO-bondage approach. Thank you, this is very good stuff to think about. James -- http://mail.python.org/mailman/listinfo/python-list
Really strange behavior
Sorry I wasn't able to be more specific on my topic but I really do not know how to classify my problem, I mean that I can't understand if it's a python or a twisted or a Qt4 problem I'm trying to run a simple application with Twisted and Qt4. To do this I downloaded this: http://twistedmatrix.com/trac/attachment/ticket/1770/qt4reactor.py Now, if I run this: # import qt4reactor import sys from PyQt4 import QtGui from winIum import Window def main(): app = QtGui.QApplication(sys.argv) qt4reactor.install(app) MainWindow = QtGui.QMainWindow() win = Window(MainWindow) MainWindow.show() from twisted.internet import reactor reactor.run() # my window shows and run correctly. If I run this: # import qt4reactor import sys from PyQt4 import QtGui from winIum import Window def creApp(): app = QtGui.QApplication(sys.argv) qt4reactor.install(app) retrun app def creWin(): MainWindow = QtGui.QMainWindow() win = Window(MainWindow) MainWindow.show() def main(): app = creApp() creWin() from twisted.internet import reactor reactor.run() # my window doesn't show and the script doesn't stop but remains trapped in some gui loop. What's the problem I can't see?? Thank you in advance for any help. Licia -- http://mail.python.org/mailman/listinfo/python-list
Re: small python cgi webserver
Fabian Braennstroem wrote: [...] Maybe, I understood something wrong, but I thought that the above 'webserver' script would replace apache in my case; at least I hoped!? It does. The 'ServerRoot' and 'DocumentRoot' directories are the directories you are starting your webserver in. Create a 'cgi' directory inside this and consider that you have to name it in the serverscript in relation to the serverroot! quote cgi_directories=[/home/fab/Desktop/cgi-bin] /quote This means you have to start your server inside directory '/'. If you start your server in your home dir '/home/fab' then you have to name your cgi_directories ['/Desktop/cgi-bin']. In your response (cgi-script) you have to divide the header from the content '\r\n\r\n'. HTH Norbert -- http://mail.python.org/mailman/listinfo/python-list
Re: py2exe questions
Thomas Heller wrote: Larry Bates schrieb: Doug Stell wrote: I have 2 questions about py2exe or any similar utility. 1. Is it possible to create a single Windows executable that does not blow out to a folder full of files and can be called from scripts using command line arguments? 2. If the above can be done, it is possible to hide parts of the Python source code from users? These users are software developers, but we don't want them to see how the code does what it does. thanks, doug py2exe reduce the number of files you need to distribute down to 4: msvcr71.dll w9xpopen.exe (Windows/98 support) library.zip (all .pyo, .pyd, and .dll files) applcation.exe It can easily be reduced to 2 files by 'embedding' the libray.zip into the exe (use the zipfile=None option), and deleting the w9xpopen.exe if you don't need win98 support. and finally you can use Python2.3 to avoid msvcr71.dll -robert -- http://mail.python.org/mailman/listinfo/python-list
Re: small python cgi webserver
Fabian Braennstroem wrote:
Hi,
* ArdPy [EMAIL PROTECTED] wrote:
Fabian Braennstroem wrote:
Hi,
I am looking for a small python script, which starts a small
web server with python cgi support on a linux machine.
I tried:
#!/usr/bin/env python
import sys
from CGIHTTPServer import CGIHTTPRequestHandler
import BaseHTTPServer
class MyRequestHandler(CGIHTTPRequestHandler):
# In diesem Verzeichnis sollten die CGI-Programme stehen:
cgi_directories=[/home/fab/Desktop/cgi-bin]
def run():
# 8000=Port-Nummer
# -- http://localhost:8000/
# Fuer http://localhost/
# Port-Nummer auf 80 setzen
httpd=BaseHTTPServer.HTTPServer(('', 8000), MyRequestHandler)
httpd.serve_forever()
if __name__==__main__:
print Starting Server
run()
but when I want to test a small python cgi test file:
#!/usr/bin/python
# -*- coding: UTF-8 -*-
# Debugging für CGI-Skripte 'einschalten'
import cgitb; cgitb.enable()
print Content-Type: text/html;charset=utf-8\n
print Hello World!
I just get the text and not the html output. The file's mode
is 755.
Is there anything wrong with the webserver script or do I do
something completely wrong? Maybe, you have a different
webserver script?
Greetings!
Fabian
Probably the server is not executing your CGI script. If it is the
Apache web server that you are using then just ensure the following
settings in your /etc/httpd/conf/httpd.conf file is exactly like
following:
Directory /var/www/cgi-bin
AllowOverride None
Options ExecCGI
Order allow,deny
Allow from all
/Directory
Maybe, I understood something wrong, but I thought that the
above 'webserver' script would replace apache in my case; at
least I hoped!?
Greetings!
Fabian
Oh yes...Your script is supposed to replace apache. I tried with your
script on my pc and its working just fine. However the problem still is
that the server is taking your file to be a plain file rather than a
CGI script. Looking at CGIHTTPServer.is_cgi method might prove helpful.
--
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Re: Exploiting Dual Core's with Py_NewInterpreter's separated GIL ?
Martin v. Löwis wrote: robert schrieb: in combination with some simple locking (anyway necessary) I don't see a problem in ref-counting. In the current implementation, simple locking isn't necessary. The refcounter can be modified freely since the code modifying it will always hold the GIL. ( meant: a lock to prevent multiple Interpreters accessing concurrently the hot shared/tunneled objects ) Question Besides: do concurrent INC/DEC machine OP-commands execute atomically on Multi-Cores as they do in Single-Core threads? Not necessarily, no. On x86, you need to prefix the instruction with the LOCK prefix for it to become atomic. Otherwise, the two necessary read/write cycles to main memory may interleave with the memory operations of another processor. On other processors, INC mem might not exist at all as an instruction; when you only have register add, then implementing an atomic increment is a challenge. That's why the Windows API provides you with an atomic increment function as part of the operating system API. Thanks for that info. That is interesting. Thus even on x86 currently this LOCK is not used (just (op)-ob_refcnt++) ) Reading this I got pinched: In win32ui there are infact Py_INC/DECREF's outside of the GIL ! And I have a severe crash problem with threaded apps - the problem is only only on dual cores ! That pointer probably will end a long search... robert PS: Besides: what are speed costs of LOCK INC mem ? -- http://mail.python.org/mailman/listinfo/python-list
Re: Really strange behavior
IloChab wrote: Sorry I wasn't able to be more specific on my topic but I really do not know how to classify my problem, I mean that I can't understand if it's a python or a twisted or a Qt4 problem I'm trying to run a simple application with Twisted and Qt4. To do this I downloaded this: http://twistedmatrix.com/trac/attachment/ticket/1770/qt4reactor.py Now, if I run this: # import qt4reactor import sys from PyQt4 import QtGui from winIum import Window def main(): app = QtGui.QApplication(sys.argv) qt4reactor.install(app) MainWindow = QtGui.QMainWindow() win = Window(MainWindow) MainWindow.show() from twisted.internet import reactor reactor.run() # my window shows and run correctly. If I run this: # import qt4reactor import sys from PyQt4 import QtGui from winIum import Window def creApp(): app = QtGui.QApplication(sys.argv) qt4reactor.install(app) retrun app def creWin(): MainWindow = QtGui.QMainWindow() win = Window(MainWindow) MainWindow.show() def main(): app = creApp() creWin() from twisted.internet import reactor reactor.run() # my window doesn't show and the script doesn't stop but remains trapped in some gui loop. What's the problem I can't see?? Thank you in advance for any help. Licia Well the only problem according to me could be with the 'from twisted.internet import reactor' statement. Try putting this at the beginning of the script. Might be it will work just fine... -- http://mail.python.org/mailman/listinfo/python-list
Re: codecs - where are those on windows?
Fredrik Lundh schrieb:
If your installation directory is C:\Python25, then look in
C:\Python25\lib\encodings
that's only the glue code. the actual data sets are provided by a bunch
of built-in modules:
import sys
sys.builtin_module_names
('__builtin__', '__main__', '_ast', '_bisect', '_codecs',
'_codecs_cn', '_codecs_hk', '_codecs_iso2022', '_codecs_jp',
'_codecs_kr', '_codecs_tw', ...
So, it should be possible to do a custom build of python24.dll /
python25.dll without some of those codecs, resulting in a smaller
python24.dll ?
It will be some time untill my apps must support Chinese and
Japanese...
Harald
--
http://mail.python.org/mailman/listinfo/python-list
Re: Exploiting Dual Core's with Py_NewInterpreter's separated GIL ?
robert, Interprocess communication is tedious and out of questio [...] I expect to be able to directly push around Python Object-Trees between the 2 (or more) interpreters by doing some careful locking. Please do yourself a favour and have a look at pyro. pyro makes InterComputer and InterProcess Communication a snap. And it allows you to push around Python Objects not only between processes, but computers. Maybe it solves your problem much easier and even more than you want to solve it now by being able to use more then one computer. Harald -- http://mail.python.org/mailman/listinfo/python-list
Re: Sorted and reversed on huge dict ?
so it has worked :) and last 12h4:56, 15 dicts with 1133755 keys, i do not know how much ram was used as i was not always monitoring it. thanks for all replies, i'm going to study intern and others suggestions, hope also someone will bring a pythonic way to know memory usage :) best. -- http://mail.python.org/mailman/listinfo/python-list
Re: py2exe questions
The McMillan (sp?) Python Installer has recently been resurrected as well, though now, it is just called PyInstaller and can be found at http://pyinstaller.python-hosting.com/ It allows you to create a one file distributable without the need to go back to Python2.3. Despite what everyone is saying though, I believe that any and all solutions will require that the byte-code be extracted to some directory before being run. It's not as though you are REALLY compiling the language to native code. It's just a bootstrap around the Python interpreter and your code plus any modules that it needs to run. -- Jerry -- http://mail.python.org/mailman/listinfo/python-list
Re: WSDL?
On 11/3/06, tobiah [EMAIL PROTECTED] wrote: Is WSDL the right answer for in house communication between programs written in different languages, or is it more for publishing interfaces for use by parties outside your own company? at work we use webservices (which is a better name) a lot for inhouse but I work at a big company where other people look like if they where another company ;) as soring explained WSDL is a languaje to tell you what to do. the idea behind it is that anyone can take it read it and write a client for your service without even having help your your team. so yes it can or as other people said you could just go with a lossier webservice interface based on xmlrpc. and please please don't go to corba we need to kill that. -- http://mail.python.org/mailman/listinfo/python-list
Re: py2exe questions
Jerry wrote: Despite what everyone is saying though, I believe that any and all solutions will require that the byte-code be extracted to some directory before being run. the Python interpreter doesn't really care what you believe, though; it's perfectly capable of executing byte code that's stored in memory buffers. /F -- http://mail.python.org/mailman/listinfo/python-list
[OT] how to write code into a blog post?
Hi I know many people here blog so sorry for the OT. Currently I have a wordpress install and went I wanted to post some code I notice how painfull it is. I'm still in shock that programmers forgot about posting code on their own engine, but oohh well they are php :D anyway I'll like to know your experiences I google around for wp plugins and half of them are dead links and the other half I wasn't very existed about. I'm running this on a very good webhost so I can install pretty much anything. so I'll accept suggestions either for wp plugins or another engine, but the only way I'll accept something like blogger is that they let me have it on my hostname or at least make me do overwrites. I'm even willing to change my blogging platform if that's the best way. So please post your suggestions there too. thanks -- http://mail.python.org/mailman/listinfo/python-list
Re: Exploiting Dual Core's with Py_NewInterpreter's separated GIL ?
Paul Rubin wrote: robert [EMAIL PROTECTED] writes: I don't want to discourage you but what about reference counting/memory management for shared objects? Doesn't seem fun for me. in combination with some simple locking (anyway necessary) I don't see a problem in ref-counting. If at least any interpreter branch has a pointer to the (root) object in question the ref-count is 0. Question Besides: do concurrent INC/DEC machine OP-commands execute atomically on Multi-Cores as they do in Single-Core threads? Generally speaking, no, the inc/dec instructions are not atomic. You can do an atomic increment on the x86 using LOCK XCHG (or maybe LOCK INC is possible). The thing is that the locking protocol that guarantees atomicity is very expensive, like 100x as expensive as an unlocked instruction on a big multiprocessor. So yes, of course you could accomplish reference counting through locks around the ref counts, but performance suffers terribly. The solution is to get rid of the ref counts and manage the entire heap using garbage collection. For stuff like dictionary access, there are protocols (again based on LOCK XCHG) that don't require locking for lookups. Only updates require locking. Simon Peyton-Jones has a good paper about how it's done in Concurrent Haskell: http://research.microsoft.com/~simonpj/papers/stm/stm.pdf This is really cool stuff and has found its way into Perl 6. I'd like to see Python get something like it. Thats really interesting. Do expect this to remove once the GIL from Python? As dict-accesses (which are also must-be-atoms here) compose a major Python CPU load, the 100x costing instructions would probably put a 30% burden on Pythons overall speed. A lock-protected possibilty to use multiple well separated Interpreters by tunneling objects will probably still be a most effective solution without speed costs. The problem of singleton object's refcount (None, , 1,2,3...), which MvL mentioned, is the main concern as far as I've understood. The locking of Python core global resources (files etc.) can be done with litte effort. The globals of extension modules are not really critical, as in the typical applications the tunnel method is mainly used for limited number crunching and as programmer you are well aware of multi-interpreter-unfit modules (until they final become mature). There could be also a special import method to duplicate extension data as workaround. The singletons refcount could be fix-reset to MAXINT/2 at refcreation-time (or GC or ..) or so to freeze them quiet for ever. (Mutable (why?)) exception types could be doubled in same style as normal python modules, or they could be rendered read-only. Thrown Exceptions will not cross the border. ( Think, the fact that Exception.x=5 is possible is more an artefact than intended ) robert -- http://mail.python.org/mailman/listinfo/python-list
Re: WSDL?
In [EMAIL PROTECTED], Jorge Vargas wrote: and please please don't go to corba we need to kill that. Have you real reasons or is this a religious thing? As I see it Corba is much better supported by Python libs than SOAP is. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list
Re: Exploiting Dual Core's with Py_NewInterpreter's separated GIL ?
GHUM wrote: robert, Interprocess communication is tedious and out of questio [...] I expect to be able to directly push around Python Object-Trees between the 2 (or more) interpreters by doing some careful locking. Please do yourself a favour and have a look at pyro. pyro makes InterComputer and InterProcess Communication a snap. And it allows you to push around Python Objects not only between processes, but computers. Maybe it solves your problem much easier and even more than you want to solve it now by being able to use more then one computer. another MPI - pickles and worse on the network :-( Havy networked batch jobs were never a problem with Python. Thats what I want to go away from. Read the rest of this thread. Discussion is about in-place object tunnel for fine grained high-speed SMP multi-threading (memory bus) -- http://mail.python.org/mailman/listinfo/python-list
Re: Forum written in Python?
On 11/2/06, Karlo Lozovina [EMAIL PROTECTED] wrote: Are there any forum or bulletin board systems written entirely in Python? I got sick of PhpBB, mostly because I can't tweak and fiddle with the code, since I really don't like PHP and don't know it that well. I thought of writting my own simple forum software, but if there are existing projects out there, I wouldn't mind contributing. So far I found out about Pocoo, but it seems to immature right now, I was looking for something comparable to PhpBB or IPB? why not contribute to Pocoo? -- ___Karlo Lozovina - Mosor | | |.-.-. web: http://www.mosor.net || ICQ#: 10667163 | || _ | _ | Parce mihi domine quia Dalmata sum. |__|_|__||_|_| -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: WSDL?
On 11/4/06, Marc 'BlackJack' Rintsch [EMAIL PROTECTED] wrote: In [EMAIL PROTECTED], Jorge Vargas wrote: and please please don't go to corba we need to kill that. Have you real reasons or is this a religious thing? As I see it Corba is much better supported by Python libs than SOAP is. I see ZSI as a very good engine for SOAP as for xmlrpc it's better since you can interact with a browser and then you can even have json rpc. but yes ur right is mostly because of religious reasons :) Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: py2exe questions
In [EMAIL PROTECTED], Jerry wrote: Despite what everyone is saying though, I believe that any and all solutions will require that the byte-code be extracted to some directory before being run. It's not Python bytecode. The problem is native libraries which are hard to run from memory without a real file backing it on some platforms. A pure Python program/package should be possible without temporary files. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list
Re: how do I pass values between classes?
kath wrote: hi everyone. I have a task, I have fragmented the task into subtask. I have planned to create a class to each subclass and one parent class to handle the sub tasks. Each subclass are saved in seperate file and all my subclasses and parent class are placed in the same folder. The parent class is subclass of wx.Frame, and subclasses are subclass of wx.Panel. Each subclass will create a GUI for each task.. ok.. here is problem When a menu is selected in the parent class, im instantiating the child class(i.e, Panel), which has textbox and two buttons. first button is used to select a file, and second one I have planned to, read the file and pass the values to parent class [B]OR[/B] pass the filepath to parent to read and do rest of the work. How do I do that? Please tell me whether I am following a correct method, by fragmenting task into small task and assigning it to child class and saving it in a separate file?. ok, here is the Parent class [code] import wx import client My Parent class class Parent(wx.Frame): def __init__(self, parent, id, title): wx.Frame.__init__(self, parent, id, title) menu=wx.Menu() menu.Append(5000, File) menu.AppendSeparator() menu.Append(5001, Exit) menubar=wx.MenuBar() menubar.Append(menu, File) self.SetMenuBar(menubar) self.Bind(wx.EVT_MENU, self.OnFile,id=5000) self.Bind(wx.EVT_MENU, self.OnExit,id=5001) def OnFile(self, event): self.cl=client.Child(self, -1) def OnBrowse(self, event): dir= d=x.FileDialog(self, Choose an Excel file, self.dirname, , *.xls, wx.OPEN) if d.ShowModal() == wx.ID_OK: self.filename=d.GetFilename() self.dirname=d.GetDirectory() self.filepath.SetValue(os.path.join(self.dirname, self.filename)) def OnUpload(self, event): pass def OnExit(self, event): self.Close() class MyApp(wx.App): def OnInit(self): frame=Parent(None, -1, Parent window) frame.Show(True) self.SetTopWindow(frame) return True if __name__ == '__main__': app=MyApp(redirect=False) app.MainLoop() [/code] and Child class [code] import wx, os My Child class class Child(wx.Panel): def __init__(self, parent, id): wx.Panel.__init__(self, parent, id, size=(300,300)) box=wx.BoxSizer(wx.HORIZONTAL) label=wx.StaticText(self, -1, File Path: ) self.text=wx.TextCtrl(self, -1) browse=wx.Button(self, -1,Browse) upload=wx.Button(self, -1, Upload) self.Bind(wx.EVT_BUTTON, self.OnBrowse, browse) self.Bind(wx.EVT_BUTTON, self.OnUpload, upload) box.Add(label) box.Add(self.text) box.Add(browse) mainbox=wx.BoxSizer(wx.VERTICAL) mainbox.Add(box) mainbox.Add(upload) self.SetSizer(mainbox) mainbox.Layout() def OnBrowse(self, event): self.dir= d=wx.FileDialog(self, Choose an Excel file, self.dir, , *.xls, wx.OPEN) if d.ShowModal() == wx.ID_OK: self.filename=d.GetFilename() self.dir=d.GetDirectory() self.text.SetValue(os.path.join(self.dir, self.filename)) def OnUpload(self, event): pass class MyApp(wx.App): def OnInit(self): frame=wx.Frame(None, -1, Child window) panel=Child(frame, -1) frame.Show(True) self.SetTopWindow(frame) return True if __name__ == '__main__': app=MyApp() app.MainLoop() [/code] thank you, regards, kath. You might consider doing it the same way wx passes things around. When you instantiate the subclass pass the parent class' instance as first argument to __init__ method. That way the subclass can easily pass values back to the parent by using that pointer. -Larry -- http://mail.python.org/mailman/listinfo/python-list
Re: WSDL?
Jorge Vargas wrote: On 11/4/06, Marc 'BlackJack' Rintsch [EMAIL PROTECTED] wrote: In [EMAIL PROTECTED], Jorge Vargas wrote: and please please don't go to corba we need to kill that. Have you real reasons or is this a religious thing? As I see it Corba is much better supported by Python libs than SOAP is. I see ZSI as a very good engine for SOAP as for xmlrpc it's better since you can interact with a browser and then you can even have json rpc. but yes ur right is mostly because of religious reasons :) When SOAP can do everything that Corba can do, and as efficiently, it might stand a chance of displacing it. I see SOAP as essentially an ugly bloated NIH response of the Microsoft camp to an open specification that achieved all its goals in an elegant way. And all to allow inappropriate remote-method execution through port 80 to avoid the corporate firewall. Which ultimately just made firewalling port 80 that much more difficult. Microsoft is a poor church, and very uncaring of its adherents. So take your religious reasons and leave Corba alone until SOAP is an effective competitor ;-) regards Steve -- Steve Holden +44 150 684 7255 +1 800 494 3119 Holden Web LLC/Ltd http://www.holdenweb.com Skype: holdenweb http://holdenweb.blogspot.com Recent Ramblings http://del.icio.us/steve.holden -- http://mail.python.org/mailman/listinfo/python-list
Re: small python cgi webserver
Hi Norbert, * Norbert Kaufmann [EMAIL PROTECTED] wrote: Fabian Braennstroem wrote: [...] Maybe, I understood something wrong, but I thought that the above 'webserver' script would replace apache in my case; at least I hoped!? It does. The 'ServerRoot' and 'DocumentRoot' directories are the directories you are starting your webserver in. Create a 'cgi' directory inside this and consider that you have to name it in the serverscript in relation to the serverroot! quote cgi_directories=[/home/fab/Desktop/cgi-bin] /quote This means you have to start your server inside directory '/'. I tried this, but it does not help ... a wait, the leading '/' is the problem. Thanks! If you start your server in your home dir '/home/fab' then you have to name your cgi_directories ['/Desktop/cgi-bin']. In your response (cgi-script) you have to divide the header from the content '\r\n\r\n'. I am not sure, what that means!? ... but it works :-) Greetings! Fabian -- http://mail.python.org/mailman/listinfo/python-list
Python crushing on kinterbasdb connect @ FreeBSD
Hi, I uploaded my application on our production server running FreeBSD and I found it crashing at startup. Problem is in connecting to my Firebird database: kinterbasdb.connect(with either good or wrong arguments) is resolving in: python in free(): error: junk pointer, too high to make sense Abort trap (core dumped) I installed kinterbasdb manually while I need 3.2 version for DBClass and latest in ports is 3.1; could this be the problem? (rest of system is from ports) Thank You for any advice, Almad -- http://mail.python.org/mailman/listinfo/python-list
Re: Exploiting Dual Core's with Py_NewInterpreter's separated GIL ?
robert schrieb: PS: Besides: what are speed costs of LOCK INC mem ? That very much depends on the implementation. In http://gcc.gnu.org/ml/java/2001-03/msg00132.html Hans Boehm claims it's 15 cycles. The LOCK prefix itself asserts the lock# bus signal for the entire operation, meaning that the other processors can't perform memory operations during that time. On the P6, if the data is cacheable (for some Intel definition of this word), the lock# signal will not be asserted, just the cache gets locked. The LOCK prefix also causes any pending writes to be performed before the operation starts. So in the worst case, a LOCK INC will have to wait for pending writes, then will assert the lock# prefix, then perform a read and a write cycle memory cycle, with the increment processor cycle in-between. Assuming a 400MHz memory bus and a 4GHz processor, LOCK INC will take around 20 cycles, whereas a plain INC might get done in a single cycle or less (assuming pipelining and caching). Regards, Martin -- http://mail.python.org/mailman/listinfo/python-list
Re: PySchool - Online Python Web Framework Workshop.
Thanks James and Steve for the feedback I have made the appropriate changes and republished the survey at the following URL: http://killersurvey.com/answer_survey.php?id=490 Rob J James Stroud wrote: RobJ wrote: Hi! My Name is Rob Johnson and I am a graduate student at The Richard Stockton College of NJ. To make a long story short, I'm working on my Masters project in the MAIT program (Masters of Arts in Instructional Technology). I have written a proposal to put together a free on-line Python web framework workshop. The workshop will be geared to help people new to Python web frameworks. I am asking for the community's assistance to help me get this project off the ground. As part of my project, I am conducting a survey for people who are interested in learning more about python web frameworks. The survey is located at http://killersurvey.com/answer_survey.php?id=479. I have also started a blog about this experience in order to let people know what I'm doing (http://pyschool.blogspot.com/). If you have a few minutes, please take a couple of minutes to take the quick survey. The survey is anonymous and the information will be used for statistics for my project. Also, any constructive feedback or suggestions that you can give me would be gladly appreciated. Thanks Rob J Q9 should be check all that apply or otherwise qualified with primarily. Q10 is missing other types of broadband such as what one might find at school, and also have the option of multiple selections. -- http://mail.python.org/mailman/listinfo/python-list
Re: PySchool - Online Python Web Framework Workshop.
RobJ wrote: Hi! My Name is Rob Johnson and I am a graduate student at The Richard Stockton College of NJ. To make a long story short, I'm working on my Masters project in the MAIT program (Masters of Arts in Instructional Technology). I have written a proposal to put together a free on-line Python web framework workshop. The workshop will be geared to help people new to Python web frameworks. I am asking for the community's assistance to help me get this project off the ground. As part of my project, I am conducting a survey for people who are interested in learning more about python web frameworks. The survey is located at http://killersurvey.com/answer_survey.php?id=479. I have also started a blog about this experience in order to let people know what I'm doing (http://pyschool.blogspot.com/). If you have a few minutes, please take a couple of minutes to take the quick survey. The survey is anonymous and the information will be used for statistics for my project. Also, any constructive feedback or suggestions that you can give me would be gladly appreciated. This is a good idea. Good luck. I hope you make the results of the survey public. Fuzzyman http://www.voidspace.org.uk/python/index.shtml Thanks Rob J -- http://mail.python.org/mailman/listinfo/python-list
Re: WSDL?
On 11/4/06, Steve Holden [EMAIL PROTECTED] wrote: Jorge Vargas wrote: On 11/4/06, Marc 'BlackJack' Rintsch [EMAIL PROTECTED] wrote: In [EMAIL PROTECTED], Jorge Vargas wrote: and please please don't go to corba we need to kill that. Have you real reasons or is this a religious thing? As I see it Corba is much better supported by Python libs than SOAP is. I see ZSI as a very good engine for SOAP as for xmlrpc it's better since you can interact with a browser and then you can even have json rpc. but yes ur right is mostly because of religious reasons :) When SOAP can do everything that Corba can do, and as efficiently, it might stand a chance of displacing it. I see SOAP as essentially an ugly bloated NIH response of the Microsoft camp to an open specification that achieved all its goals in an elegant way. And all to allow inappropriate remote-method execution through port 80 to avoid the corporate firewall. Which ultimately just made firewalling port 80 that much more difficult. I have to disagree WSDL is a great standard and SOAP is great for transfering data from point a to point b. and it's very usefull for giving an interface for people to use like all those web2.0 api's out there. I agree on setting a server on port 80 to be a problem but that's a deployment issue I have never set a SOAP server on port 80 myself. Microsoft is a poor church, and very uncaring of its adherents. So take your religious reasons and leave Corba alone until SOAP is an effective competitor ;-) I'm sorry it's probably that I have seen some many bad Corba implementations at work that I just hate them. I recently found out that gnome applets are implemented on top of Corba and I'm very impress. regards Steve -- Steve Holden +44 150 684 7255 +1 800 494 3119 Holden Web LLC/Ltd http://www.holdenweb.com Skype: holdenweb http://holdenweb.blogspot.com Recent Ramblings http://del.icio.us/steve.holden -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: Sorted and reversed on huge dict ?
just to be sure about intern, it is used as :
d, f = {}, {}
s = this is a string
d[intern(s)] = 1
f[intern(s)] = 1
so actually the key in d and f are a pointer on an the same intern-ed
string? if so it can be interesting,
print intern.__doc__
intern(string) - string
``Intern'' the given string. This enters the string in the (global)
table of interned strings whose purpose is to speed up dictionary
lookups.
Return the string itself or the previously interned string object with
the
same value.
the comment here: (Changed in version 2.3: Interned strings used to be
immortal, but you now need to keep a reference to the interned string
around.), if it the string is used as a key, it is still reference-d,
am i right?
--
http://mail.python.org/mailman/listinfo/python-list
elementtree terminology + tangential questions
Was prompted to ask these questions when reading the following link: http://effbot.org/zone/element-infoset.htm#mixed-content provides a clear explanation of what the tail member is in the elementtree package. Questions: 1) In the xml world, is the text between an element's end tag and the next tag referred to as the tail? 2) None of the xml documents to which I've had exposure (a very, very small set) have had text between an element's end tag and the next tag, hence the following question: are there some 'best practices' advice available to help one decide when it's a good idea to put text between an element's end tag and the next tag as opposed to putting text in the text property of an element? 3) Are these questions appropriate for the comp.lang.python group, or should they be directed to a different group? Thank you. -- http://mail.python.org/mailman/listinfo/python-list
Re: PySchool - Online Python Web Framework Workshop.
Interesting idea. Just realized that I am the first person who took the republished survey. :-) I suggest that you also post this message to various Python web framework's m-list. RobJ 写道： Thanks James and Steve for the feedback I have made the appropriate changes and republished the survey at the following URL: http://killersurvey.com/answer_survey.php?id=490 －Cheng Zhang Gentoo/Python/Django Powered http://www.ifaxian.com 1st Django powered site in Chinese ;-) http://www.aiyo.cn Our 2nd Django powered site in Chinese -- http://mail.python.org/mailman/listinfo/python-list
disabledforeground or similar for Entry (in Tkinter)
Back in this post, I attempted to make a label look like a button: http://groups.google.com/group/comp.lang.python/browse_thread/thread/a83195d3970a6851/2053cbaec1bc1f19?auth=DQAAAHkMDAWnhNnzpuKlwOKZUwAGUTtT2Ay-EAB7rCY6SnwfnDzZ98M37bZDW2Is0LrBVrr8XEgPfcuOkiUE-CrSsKbBSX-67voDUXfbATBd0eYNMClezby4EXT2fuLm6f0llJ_xMO8BfkjVho_7CZvlf_9tNGnJixTbq8zr21ODZBhouQ Alright, I've learned my lesson - don't use a new widget; modify the old one. Except the Entry widget doesn't have a disabledforeground option. Neither does the Text widget, but IDLE seems to accomplish making a disabled Text look the same as an enabled Text in the IDLE Help section. No, foreground (fg) and background (bg) don't make a difference; it still changes the color of the Entry widget upon disabling. There must be something I'm missing here... -- http://mail.python.org/mailman/listinfo/python-list
Re: disabledforeground or similar for Entry (in Tkinter)
Dustan wrote: Back in this post, I attempted to make a label look like a button: http://groups.google.com/group/comp.lang.python/browse_thread/thread/a83195d3970a6851/2053cbaec1bc1f19?auth=DQAAAHkMDAWnhNnzpuKlwOKZUwAGUTtT2Ay-EAB7rCY6SnwfnDzZ98M37bZDW2Is0LrBVrr8XEgPfcuOkiUE-CrSsKbBSX-67voDUXfbATBd0eYNMClezby4EXT2fuLm6f0llJ_xMO8BfkjVho_7CZvlf_9tNGnJixTbq8zr21ODZBhouQ Alright, I've learned my lesson - don't use a new widget; modify the old one. Except the Entry widget doesn't have a disabledforeground option. Neither does the Text widget, but IDLE seems to accomplish making a disabled Text look the same as an enabled Text in the IDLE Help section. No, foreground (fg) and background (bg) don't make a difference; it still changes the color of the Entry widget upon disabling. There must be something I'm missing here... Yes there is! I assumed that http://www.pythonware.com/library/tkinter/introduction/x4447-options.htm was telling the truth, in that it's not listed there. -- http://mail.python.org/mailman/listinfo/python-list
Re: python GUIs comparison (want)
I have been using Tkinter for several years now. Recently I have been thinking about switching to something else that may have a sharper appearance. However I'm not sure what that may be, and if that something else is *that* much better than what I'm already using. Does everyone agree that wxPython looks best on Windows? I've also read in a couple of places where Dabo looks pretty good as well. So if someone were to pick a UI that gave the best appearance, what would they choose? Kevin Walzer wrote: [EMAIL PROTECTED] wrote: Now i began to learn GUI programming. There are so many choices of GUI in the python world, wxPython, pyGTK, PyQT, Tkinter, .etc, it's difficult for a novice to decide, however. Can you draw a comparison among them on easy coding, pythonish design, beautiful and generous looking, powerful development toolkit, and sufficient documentation, .etc. It's helpful for a GUI beginner. Thank you. :)Sorry for my poor english. Tkinter: Pro: Default GUI library for Python; stable; well-supported Con: Needs extension for complex/rich GUI's; core widgets are dated in look and feel; many modern extensions in Tcl/Tk have not made it into Tkinter or are not widely used (Tile, Tablelist) wxPython: Pro: Popular, actively developed, wraps native widgets, looks great on Windows, commercial-friendly license Con: Based on C++ toolkit; docs assume knowledge of C++; some think coding style is too much like C++; complex to build and deploy on Linux (wraps Gtk) PyQt: Pro: Powerful, cross-platform, sophisticated GUI's Con: Based on C++ toolkit; docs assume knowledge of C++; commercial deployment is expensive; free deployment must be GPL; smaller development and user community than wxPython PyGtk: Pro: Sophisticated GUI's, cross-platform (Linux and Win32); very popular on some platforms; active development community Con: Not native on OS X -- Kevin Walzer Code by Kevin http://www.codebykevin.com -- http://mail.python.org/mailman/listinfo/python-list
python to sharepoint ?
anyone have code that allows me to post files direct to sharepoint from python? any pointers, FAQ, etc, appreciated! thanks, craig -- http://mail.python.org/mailman/listinfo/python-list
Re: python GUIs comparison (want)
On 4 Nov 2006 08:23:40 -0800, Mudcat [EMAIL PROTECTED] wrote: I have been using Tkinter for several years now. Recently I have been thinking about switching to something else that may have a sharper appearance. However I'm not sure what that may be, and if that something else is *that* much better than what I'm already using. Does everyone agree that wxPython looks best on Windows? I've also read in a couple of places where Dabo looks pretty good as well. Dabo uses wxPython, so it looks exactly the same. The difference is in the coding: writing stuff in wxPython is like writing C++ code, while creating GUIs in Dabo is like writing Python code. Dabo also has a lot of tools for creating GUIs visually, but even if you don't use those, Dabo is a huge improvement over raw wxPython. -- # p.d. -- http://mail.python.org/mailman/listinfo/python-list
Re: python GUIs comparison (want)
Mudcat wrote: I have been using Tkinter for several years now. Recently I have been thinking about switching to something else that may have a sharper appearance. However I'm not sure what that may be, and if that something else is *that* much better than what I'm already using. Tk 8.5 isn't that far away, though. http://www.markroseman.com/tcl/guide85.html /F -- http://mail.python.org/mailman/listinfo/python-list
Trouble compiling win32all on Windows
I've trouble compiling win32all. VC98 and latest SDK installed (otherwise with original SDK it won't even compile). It tells that uuid.lib(cguid_i.obj) : fatal error LNK1103: debug info is destroyed. This lib file is in the SDK file tree. What should I do? ( a cguid_i.* file is not in this SDK tree ) C:\usr\src\pywin32-210python setup.py -q build Building pywin32 2.3.210.0 PyACL.cpp PyDEVMODE.cpp PyHANDLE.cpp PyIID.cpp PyLARGE_INTEGER.cpp PyOVERLAPPED.cpp PySECURITY_ATTRIBUTES.cpp PySECURITY_DESCRIPTOR.cpp PySID.cpp PyTime.cpp PyUnicode.cpp PyWAVEFORMATEX.cpp PyWinTypesmodule.cpp Bibliothek build\temp.win32-2.3\Release\win32\src\pywintypes23.lib und Objekt build\temp.win32-2.3\Release\win32\src\pywintypes23.exp wird erstellt uuid.lib(cguid_i.obj) : fatal error LNK1103: Debug-Informationen beschaedigt; Mo dul muss neu kompiliert werden. error: command 'C:\Programme\Microsoft Visual Studio\VC98\BIN\link.exe' failed with exit status 1103 C:\usr\src\pywin32-210 robert -- http://mail.python.org/mailman/listinfo/python-list
Re: py2exe questions
Marc 'BlackJack' Rintsch schrieb: In [EMAIL PROTECTED], Jerry wrote: Despite what everyone is saying though, I believe that any and all solutions will require that the byte-code be extracted to some directory before being run. It's not Python bytecode. The problem is native libraries which are hard to run from memory without a real file backing it on some platforms. A pure Python program/package should be possible without temporary files. py2exe even achives this on Windows. See http://www.py2exe.org/old/ , and look at the section named The bundle option. py2exe is able to load Python extensions (.pyd and .dll) from the zip-archive *without* extracting them to the file system at all. It doesn't work for the C runtime library msvcr71.dll though. Thomas -- http://mail.python.org/mailman/listinfo/python-list
Re: Exploiting Dual Core's with Py_NewInterpreter's separated GIL ?
Martin v. Löwis [EMAIL PROTECTED] writes: PS: Besides: what are speed costs of LOCK INC mem ? That very much depends on the implementation. In http://gcc.gnu.org/ml/java/2001-03/msg00132.html Hans Boehm claims it's 15 cycles. I think that has to be on a single processor, or at most a dual core processor with shared cache on die. With multiple cpu chips I don't think can get the signals around that fast. -- http://mail.python.org/mailman/listinfo/python-list
Re: WSDL?
Jorge Vargas wrote: [quotefest trimmed] I have to disagree WSDL is a great standard and SOAP is great for transfering data from point a to point b. and it's very usefull for giving an interface for people to use like all those web2.0 api's out there. Well, unless you're dealing with some kind of multipoint communications architecture, SOAP isn't really much better than just firing plain XML documents over HTTP from A to B, although my preferred use-cases for SOAP don't involve the RPC style of messaging that most people think of when SOAP is mentioned, so I guess you could benefit from SOAP (plus WSDL) if you do really care about RPC. However, one thing CORBA has going for it is maturity: the basic standards aren't in flux, and there are a number of acceptable implementations out there. Paul -- http://mail.python.org/mailman/listinfo/python-list
Re: Really strange behavior
On Sat, 04 Nov 2006 13:02:26 +0100, IloChab wrote: If I run this: # import qt4reactor import sys from PyQt4 import QtGui from winIum import Window def creApp(): app = QtGui.QApplication(sys.argv) qt4reactor.install(app) retrun app This is not actually the code you are trying to run, because retrun app would give a SyntaxError. You should copy and paste the actual code you have run, don't retype it. my window doesn't show and the script doesn't stop but remains trapped in some gui loop. What's the problem I can't see?? Don't know, I can't see it either. Why don't you add some temporary print statements into your code to try to narrow it down? def main(): print entered main app = creApp() print done creApp creWin() print done creWin from twisted.internet import reactor print done import reactor.run() print done reactor.run; exiting main -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
win32file.DeviceIoControl(FSCTL_GET_RETRIEVAL_POINTERS)
I'm not sure how to perform this operation in Python. The difficulty is in knowing the size of the output buffer: if it is too small, I get an insufficient buffer exception; too large, and I get an end of file exception. In neither case is any partial data available. I'd rather not resort to a binary seach... -- http://mail.python.org/mailman/listinfo/python-list
Re: win32file.DeviceIoControl(FSCTL_GET_RETRIEVAL_POINTERS)
Jim schrieb: I'm not sure how to perform this operation in Python. The difficulty is in knowing the size of the output buffer: if it is too small, I get an insufficient buffer exception; too large, and I get an end of file exception. In neither case is any partial data available. What precisely is the end of file exception you are getting. Looking at http://msdn.microsoft.com/library/default.asp?url=/library/en-us/fileio/fs/fsctl_get_retrieval_pointers.asp I'd say it is ERROR_HANDLE_EOFThe volume is an NTFS file system volume and the requested starting VCN is past the end of the file. So my guess is you should just pass a smaller starting VCN. Regards, Martin -- http://mail.python.org/mailman/listinfo/python-list
Re: win32file.DeviceIoControl(FSCTL_GET_RETRIEVAL_POINTERS)
Mea culpa: files with *no* clusters return the end-of-file error. -- http://mail.python.org/mailman/listinfo/python-list
Re: PySchool - Online Python Web Framework Workshop.
Dear Rob, On 4 Nov 2006 06:43:19 -0800, RobJ [EMAIL PROTECTED] wrote: Thanks James and Steve for the feedback I have made the appropriate changes and republished the survey at the following URL: http://killersurvey.com/answer_survey.php?id=490 Thanks for the update. However, a whole bunch of Linux distributions are missing. For instance, I think that both Debian and Gentoo have a large enough user base to deserve an explicit place in that list. And I'd definitely add a way to list your very own distro, if not among the listed, like you do in q. 3. Best, R. Rob J James Stroud wrote: RobJ wrote: Hi! My Name is Rob Johnson and I am a graduate student at The Richard Stockton College of NJ. To make a long story short, I'm working on my Masters project in the MAIT program (Masters of Arts in Instructional Technology). I have written a proposal to put together a free on-line Python web framework workshop. The workshop will be geared to help people new to Python web frameworks. I am asking for the community's assistance to help me get this project off the ground. As part of my project, I am conducting a survey for people who are interested in learning more about python web frameworks. The survey is located at http://killersurvey.com/answer_survey.php?id=479. I have also started a blog about this experience in order to let people know what I'm doing (http://pyschool.blogspot.com/). If you have a few minutes, please take a couple of minutes to take the quick survey. The survey is anonymous and the information will be used for statistics for my project. Also, any constructive feedback or suggestions that you can give me would be gladly appreciated. Thanks Rob J Q9 should be check all that apply or otherwise qualified with primarily. Q10 is missing other types of broadband such as what one might find at school, and also have the option of multiple selections. -- http://mail.python.org/mailman/listinfo/python-list -- Ramon Diaz-Uriarte Statistical Computing Team Structural Biology and Biocomputing Programme Spanish National Cancer Centre (CNIO) http://ligarto.org/rdiaz -- http://mail.python.org/mailman/listinfo/python-list
Re: elementtree terminology + tangential questions
In [EMAIL PROTECTED], mirandacascade wrote: 2) None of the xml documents to which I've had exposure (a very, very small set) have had text between an element's end tag and the next tag, hence the following question: are there some 'best practices' advice available to help one decide when it's a good idea to put text between an element's end tag and the next tag as opposed to putting text in the text property of an element? This depends on the type of document. Examples of xml with text between tags are XHTML or DocBook. :: pThis is an emexample/em of tail text in strongXHTML/strong./p Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list
ANNOUNCE: Scribes 0.3 Released
I am pleased to release version 0.3 of Scribes. Scribes is a text editor that uniquely balances simplicity with power. This release is a significant milestone in providing you with an enjoyable text editing experience. Bugs were squashed, new features implemented, countless enhancements made and numerous performance optimizations tweaked. It is strongly recommended that you upgrade to the new version. release note: http://scribes.sourceforge.net/release-note-0-3.html Flash Demo: http://scribes.sf.net/demo.htm GIF Demo: http://www.minds.may.ie/~dez/images/blog/scribes.html download: http://scribes.sf.net/download.html templates: http://scribes.sf.net/templates.tar.bz2 website: http://scribes.sf.net/ donate: http://scribes.sf.net/donate.html -- http://mail.python.org/mailman/listinfo/python-list
Re: elementtree terminology + tangential questions
[EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] 2) None of the xml documents to which I've had exposure (a very, very small set) have had text between an element's end tag and the next tag, Text elements are not limited to printed/visible text. If you parsed a formatted XML string, I think the indenting whitespace shows up as text elements between tags. -- Paul -- http://mail.python.org/mailman/listinfo/python-list
Re: disabledforeground or similar for Entry (in Tkinter)
On Saturday 04 November 2006 11:03, Dustan wrote: Back in this post, I attempted to make a label look like a button: http://groups.google.com/group/comp.lang.python /browse_thread/thread/a83195d3970a6851/2053cbaec 1bc1f19?auth=DQAAAHkMDAWnhNnzpuKlwOKZUwAGUTt T2Ay-EAB7rCY6SnwfnDzZ98M37bZDW2Is0LrBVrr8XEgPfcu OkiUE-CrSsKbBSX-67voDUXfbATBd0eYNMClezby4EXT2fuL m6f0llJ_xMO8BfkjVho_7CZvlf_9tNGnJixTbq8zr21ODZBh ouQ Alright, I've learned my lesson - don't use a new widget; modify the old one. Except the Entry widget doesn't have a disabledforeground option. Neither does the Text widget, but IDLE seems to accomplish making a disabled Text look the same as an enabled Text in the IDLE Help section. No, foreground (fg) and background (bg) don't make a difference; it still changes the color of the Entry widget upon disabling. There must be something I'm missing here... Have you tried the state option ? state = 'disabled' It works for Text, Entry, and Button. Once disabled you won't be able to make changes until state= 'normal' jim-on-linux http://www.inqvista.com -- http://mail.python.org/mailman/listinfo/python-list
Re: what's the difference between these two methods? (aka, why doesn't one of them work?)
Steve Holden wrote: Don't worry. It's sometimes difficult for the effbot to remember we aren't all as fearsomely intelligent as it is. I think it does a remarkably complete emulation of a human being: http://www.flickr.com/photos/[EMAIL PROTECTED]/152495923/ For what it's worth it's also amazingly helpful if you can ignore to sometimes acerbic wit. regards Steve Heh heh. Things wouldn't be the same without him...I mean it. :) -- http://mail.python.org/mailman/listinfo/python-list
NEWBIE: Script help needed
I have this script that I want to use weekly to send me email with information regarding disk space and available upgrades for my system. This script is actually a learning tool for me as I learn Python. The problem I've run into has me stumped and I need some help. What happens is when the script runs it does these things, parses the result and appends that to an html string: 1) checks disk space by using df -t reiserfs 2) runs time emerge --sync 3) runs emerge -uvp world 4) runs emerge -uv --fetchonly world The 'emerge' command is a Gentoo specific one. If I remove step 3), everything else runs just fine, the email is sent and I receive what I expect. But when step 3) is allowed to run, even if its the only command that runs, it hangs somewhere in the function getCommandOutput. If I try and debug the command, it appears to hang on this line: err = child.wait() I suspect a race condition, but I'm not sure how to proceed, can someone lend me a hand. Here is the script I wrote, I got the command getCommandOutput from this site: http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/52296 TIA [code] #!/usr/bin/python ### NEED TO RUN THIS AS ROOT ### ### EMERGE SYNC REQUIRES THIS ### import os, re, smtplib, MimeWriter, mimetools, cStringIO, popen2, fcntl, select, pdb cmd = 'df -t reiserfs' finalList = [] theOutput = [] text = This realy should be in HTML html = html\ head\ meta http-equiv=\Content-Type\ content=\text/html; charset=iso-8859-1\\ /head\ BODYBRfont color='green'emDisk Utilization on Hedley:/em/fontBR out = cStringIO.StringIO() writer = MimeWriter.MimeWriter(out) txtin = cStringIO.StringIO(text) def createhtmlmail (html, text, subject): Create a mime-message that will render HTML in popular MUAs, text in better ones import MimeWriter import mimetools import cStringIO out = cStringIO.StringIO() # output buffer for our message htmlin = cStringIO.StringIO(html) txtin = cStringIO.StringIO(text) writer = MimeWriter.MimeWriter(out) # # set up some basic headers... we put subject here # because smtplib.sendmail expects it to be in the # message body # writer.addheader(Subject, subject) writer.addheader(MIME-Version, 1.0) writer.addheader(From, [EMAIL PROTECTED]) writer.addheader(To, [EMAIL PROTECTED]) # # start the multipart section of the message # multipart/alternative seems to work better # on some MUAs than multipart/mixed # writer.startmultipartbody(alternative) writer.flushheaders() # # the plain text section # subpart = writer.nextpart() subpart.addheader(Content-Transfer-Encoding, quoted-printable) pout = subpart.startbody(text/plain, [(charset, 'us-ascii')]) mimetools.encode(txtin, pout, 'quoted-printable') txtin.close() # # start the html subpart of the message # subpart = writer.nextpart() subpart.addheader(Content-Transfer-Encoding, quoted-printable) # # returns us a file-ish object we can write to # pout = subpart.startbody(text/html, [(charset, 'us-ascii')]) mimetools.encode(htmlin, pout, 'quoted-printable') htmlin.close() # # Now that we're done, close our writer and # return the message body # writer.lastpart() msg = out.getvalue() out.close() print msg return msg def makeNonBlocking(fd): fl = fcntl.fcntl(fd, fcntl.F_GETFL) try: fcntl.fcntl(fd, fcntl.F_SETFL, fl | os.O_NDELAY) except AttributeError: fcntl.fcntl(fd, fcntl.F_SETFL, fl | fcntl.FNDELAY) def getCommandOutput(command): theOutput = [] child = popen2.Popen3(command, 1) # capture stdout and stderr from command child.tochild.close() # don't need to talk to child outfile = child.fromchild outfd = outfile.fileno() errfile = child.childerr errfd = errfile.fileno() makeNonBlocking(outfd)# don't deadlock! makeNonBlocking(errfd) outdata = errdata = '' outeof = erreof = 0 while 1: ready = select.select([outfd,errfd],[],[]) # wait for input if outfd in ready[0]: outchunk = outfile.read() if outchunk == '': outeof = 1 outdata = outdata + outchunk if errfd in ready[0]: errchunk = errfile.read() if errchunk == '': erreof = 1 errdata = errdata + errchunk if outeof and erreof: break select.select([],[],[],.1) # give a little time for buffers to fill err = child.wait() if err != 0: raise RuntimeError, '%s failed w/ exit code %d\n%s' % (command, err, errdata) theOutput.append(outdata) theOutput.append(errdata) return theOutput #Run df and get the disk info output = os.popen(cmd) # match two or more spaces, the header line has a sngle # space between the 'Mouted on' field # We need to keep those together # The other spaces are the separation in the field headers # To get the output from df down
program written to model population evolving over time
dear all, i've just finished a program which sets up an initial population consisting of four different phenotypes, allows them to evolve over time and graphs the output at the end, displaying what is in effect the evolutionary steady state for the system. i'm no authority on evolutionary game theory (to put it mildly), but there is a certain amount of interesting emergent behaviour if you put the initial parameters in in a certain manner. excuse my ignorance, but is there a site where people post this kind of stuff? i figured someone might be interested in playing with it, tweaking it a bit, changing the parameters. i've only been programming a couple of months, so i'm sure more experienced programmers could whack into shape if they were interested. or not... it's about 500 lines, including white space and comments, probably about 400 lines of pretty unconcise code in all. thought i'd try and contribute something for once instead of just asking questions. sam PS it does actually work, in case you're wondering. :-) -- http://mail.python.org/mailman/listinfo/python-list
Re: Converting Microsoft Works databases.... *shudder*
I have Works 8.0 and you can SAVE AS to dBase IV format. Not sure for other versions. Regards, Ian Michael B. Trausch mike$#at^nospam!%trauschus wrote in message news:[EMAIL PROTECTED] I was wondering if anyone has had any experience with this. Someone I know is trying to move away from Microsoft Works, and I am trying to look into a solution that would convert their data in a lossless fashion to a more modern format. The database has more than 65K rows, so converting it to be an Excel spreadsheet, would, AFAIK, not be an option. It would seem that MS Works can export the database as a DBF format database, though I have not tried it. Before I get started, I was wondering if anyone has been through this problem in the past and used Python to solve the problem. Knowing nearly nothing about the DBase family of application software, and database formats, I find myself feeling like the information out there is, frankly, a bit overwhelming. Would the recipe specified in the dbf to csv thread be useful here for a file in DBase IV format? It of course uses the same extension, but I am not sure if the file semantics are at all similar. The idea at the end would be to probably create a database on an small SQL server (like MySQL) and let the person access their data using ODBC on their Windows workstation so that they can create form letters and the like. They do not have access to MS Office's Access product, nor do they wish to use OOo Base (and I can't say that I blame them -- it seems to crash far too often to be considered reliable stuff). -- Mike -- http://mail.python.org/mailman/listinfo/python-list
WebScraping
Can someone steer me to scripts / modules etc on webscraping please??? Ultimately I would like someone to write a script for me. However i am still searching for documentation on this subject Thanks Graham -- http://mail.python.org/mailman/listinfo/python-list
Re: Python tools for managing static websites?
Chris Pearl [EMAIL PROTECTED] wrote: Are there Python tools to help webmasters manage static websites? I'm talking about regenerating an entire static website - all the HTML files in their appropriate directories and sub-directories. Each page has some fixed parts (navigation menu, header, footer) and some changing parts (body content, though in specific cases the normally fixed parts might change as well). The tool should help to keep site editing DRY every piece of data, including the recurring parts, should exist only once. Tahchee http://www.ivy.fr/tahchee SUMMARY = Automated static and dynamic web site creation tool DESCRIPTION = \ Tahchee is a tool for developers and Web designers that makes it possible to easily build a static Web site using the Cheetah template system. It is used to fill in the gap between bare template and macro processing system and dynamic template-based Web sites. It acts both as a build system (à la make) as well as an extension to the Cheetah template that makes it really easy to build small to medium-sized sites. It is ideal for writing open source project or small company Web sites.\ Florian -- http://www.florian-diesch.de/ -- http://mail.python.org/mailman/listinfo/python-list
Re: how to write code into a blog post?
Jorge Vargas wrote:
Hi I know many people here blog so sorry for the OT.
Currently I have a wordpress install and went I wanted to post some
code I notice how painfull it is.
Indeed :-) I'm using the iG:Syntax Hiliter over on
http://blog.tkbe.org after I got some comments about the lack of
readability of my code samples ;-) It can be even more colorful than
I've set it up, but it handles a considerable number of languages and
is pretty simple to both use and manage. You can get it at:
http://blog.igeek.info/wp-plugins/igsyntax-hiliter/ I added the
following to the end of the stylesheet to make the code frame bigger
and dynamic:
div.igBar { width: 95%; }
div.syntax_hilite { width:95%; }
hth,
-- bjorn
--
http://mail.python.org/mailman/listinfo/python-list
Re: py2exe questions
Doug Stell wrote: I have 2 questions about py2exe or any similar utility. 1. Is it possible to create a single Windows executable that does not blow out to a folder full of files and can be called from scripts using command line arguments? py2exe can most certainly do this. 2. If the above can be done, it is possible to hide parts of the Python source code from users? These users are software developers, but we don't want them to see how the code does what it does. thanks, doug you can make a single exe in py2exe which would make it harder to disassemble, but there's no such thing in the software world that makes it impossible. -- http://mail.python.org/mailman/listinfo/python-list
Re: disabledforeground or similar for Entry (in Tkinter)
On Saturday 04 November 2006 11:03, Dustan wrote: Back in this post, I attempted to make a label look like a button: http://groups.google.com/group/comp.lang.python /browse_thread/thread/a83195d3970a6851/2053cbaec 1bc1f19?auth=DQAAAHkMDAWnhNnzpuKlwOKZUwAGUTt T2Ay-EAB7rCY6SnwfnDzZ98M37bZDW2Is0LrBVrr8XEgPfcu OkiUE-CrSsKbBSX-67voDUXfbATBd0eYNMClezby4EXT2fuL m6f0llJ_xMO8BfkjVho_7CZvlf_9tNGnJixTbq8zr21ODZBh ouQ Alright, I've learned my lesson - don't use a new widget; modify the old one. Except the Entry widget doesn't have a disabledforeground option. Neither does the Text widget, but IDLE seems to accomplish making a disabled Text look the same as an enabled Text in the IDLE Help section. No, foreground (fg) and background (bg) don't make a difference; it still changes the color of the Entry widget upon disabling. There must be something I'm missing here... My previous post was hasty and we all know, Haste makes waste. Try this; If you use wiget-01.pack_forget() or wiget-01.grid_forget(), you can now build wiget-02 using wiget-02.pack or grid() for the same location. You can reinstall uninstalled wigets by using pack() or grid() again for those hidden wigets. However only after uninstalling for the wigets in those locations. root = Tk() test1 = Button(root, text='Test No.1 button', bg = 'yellow', width = 15, height = 10) test1.grid(row=0, column=0) test1.grid_forget() test2 = Button(root, text='Test #2 button', bg = 'green', width = 15, height = 10) test2.grid(row=0, column=0) mainloop() jim-on-linux http://www.inqvista.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Defaultdict and speed
[EMAIL PROTECTED] wrote: Klaas wrote: Benchmarks? There is one (fixed in a succesive post) in the original thread I was referring to: http://groups.google.com/group/it.comp.lang.python/browse_thread/thread/aff60c644969f9b/ If you want I can give more of them (and a bit less silly, with strings too, etc). Sorry, I didn't see any numbers. I ran it myself and found the defaultdict version to be approximately twice as slow. This, as you suggest, is the worst case, as you are using integers as hash keys (essentially no hashing cost) and are accessing each key exactly once. (and slowing down other uses of the class) All it has to do is to cheek if the default_factory is an int, it's just an if done only once, so I don't think it slows down the other cases significantly. Once it makes that check, surely it must check a flag or some such every time it is about to invoke the key constructor function? especially when the faster alternative is so easy to code. The faster alternative is easy to create, but the best faster alternative can't be coded, because if you code it in Python you need two hash accesses, while the defaultdict can require only one of them: if n in d: d[n] += 1 else: d[n] = 1 How do you think that defaultdict is implemented? It must perform the dictionary access to determine that the value is missing. It must then go through the method dispatch machinery to look for the __missing__ method, and execute it. If you _really_ want to make this fast, you should write a custom distionary subclass which accepts an object (not function) as default value, and assigns it directly. If that performance difference matters, With Python it's usually difficult to tell if some performance difference matters. Probably in some programs it may matter, but in most other programs it doesn't matter. This is probably true for all the performance tweaks I may invent in the future too. In general, I agree, but in this case it is quite clear. The only possible speed up is for defaultdict(int). The re-write using regular dicts is trivial, hence, for given piece of code is it quite clear whether the performance gain is important. This is not an interpreter-wide change, after all. Consider also that the performance gains would be relatively unsubstantial when more complicated keys and a more realistic data distribution is used. Consider further that the __missing__ machinery would still be called. Would the resulting construct be faster than the use of a vanilla dict? I doubt it. But you can prove me wrong by implementing it and benchmarking it. you would likely find more fruitful gains in coding it in c, using PyDict_SET I've just started creating a C lib for related purposes, I'd like to show it to you all on c.l.p, but first I have to find a place to put it on :-) (It's not easy to find a suitable place, it's a python + c + pyd, and it's mostly an exercise). Would suggesting a webpage be too trite? -Mike -- http://mail.python.org/mailman/listinfo/python-list
Re: Trouble compiling win32all on Windows
robert wrote: I've trouble compiling win32all. VC98 and latest SDK installed (otherwise with original SDK it won't even compile). It tells that uuid.lib(cguid_i.obj) : fatal error LNK1103: debug info is destroyed. The library isn't compatable with the compiler you're using. You'll need to use an older version of the Platform SDK that supports your compiler. Ross Ridge -- http://mail.python.org/mailman/listinfo/python-list
Re: WSDL?
CORBA may work fine in an intranet environment, where you can control the server and the client, but it clearly failed to be a popular choice on the internet: have you seen any company offering webservices with a CORBA interface?? The main 2 choices that companies offering webservices seem to have are REST (Yahoo, Amazon, Google) and SOAP (Amazon, Google). And no, SOAP is not a Microsoft thing anymore: it's a standard supported by a lot of large companies (and neither Amazon nor Google are Microsoft shops, as far as I know). The reason SOAP moved away from the pure RPC model is because it needed to support the more modern and flexible distributed computing paradigm which is message based, not RPC based. But yeah, I fully agree that SOAP is very complicated, and the support for it is pretty poor. Sorin Steve Holden wrote: Jorge Vargas wrote: On 11/4/06, Marc 'BlackJack' Rintsch [EMAIL PROTECTED] wrote: In [EMAIL PROTECTED], Jorge Vargas wrote: and please please don't go to corba we need to kill that. Have you real reasons or is this a religious thing? As I see it Corba is much better supported by Python libs than SOAP is. I see ZSI as a very good engine for SOAP as for xmlrpc it's better since you can interact with a browser and then you can even have json rpc. but yes ur right is mostly because of religious reasons :) When SOAP can do everything that Corba can do, and as efficiently, it might stand a chance of displacing it. I see SOAP as essentially an ugly bloated NIH response of the Microsoft camp to an open specification that achieved all its goals in an elegant way. And all to allow inappropriate remote-method execution through port 80 to avoid the corporate firewall. Which ultimately just made firewalling port 80 that much more difficult. Microsoft is a poor church, and very uncaring of its adherents. So take your religious reasons and leave Corba alone until SOAP is an effective competitor ;-) regards Steve -- Steve Holden +44 150 684 7255 +1 800 494 3119 Holden Web LLC/Ltd http://www.holdenweb.com Skype: holdenweb http://holdenweb.blogspot.com Recent Ramblings http://del.icio.us/steve.holden -- http://mail.python.org/mailman/listinfo/python-list
Re: wing ide vs. komodo?
I have both, but the IDE I use every day is SPE, which is shareware. I'm not savvy enough to enumerate a feature comparison, but I do find SPE extremely friendly and intuitive. Gerry -- http://mail.python.org/mailman/listinfo/python-list
Re: wing ide vs. komodo?
I've tried both and find WingIDE much faster than Komodo and the layout is very well thought out. I love the way you can collapse all the differnet panes with a few keystrokes. I also like their autocomplete functionality. Wing is developed by a small company, focussed on python development, while komodo supports all the major scripting languages. VJ -- http://mail.python.org/mailman/listinfo/python-list
Re: wing ide vs. komodo?
vj wrote: I've tried both and find WingIDE much faster than Komodo and the layout is very well thought out. I love the way you can collapse all the differnet panes with a few keystrokes. I also like their autocomplete functionality. +1 I use Wing and enjoy its auto-completion. Fuzzyman http://www.voidspace.org.uk Wing is developed by a small company, focussed on python development, while komodo supports all the major scripting languages. VJ -- http://mail.python.org/mailman/listinfo/python-list
Re: program written to model population evolving over time
On Sat, 04 Nov 2006 13:09:10 -0800, sam wrote: i've just finished a program which sets up an initial population consisting of four different phenotypes, allows them to evolve over time and graphs the output at the end, displaying what is in effect the evolutionary steady state for the system. [snip] excuse my ignorance, but is there a site where people post this kind of stuff? i figured someone might be interested in playing with it, tweaking it a bit, changing the parameters. i've only been programming a couple of months, so i'm sure more experienced programmers could whack into shape if they were interested. or not... Something like this would probably go very well on Useless Python, or the Cheeseshop: http://www.uselesspython.com/ http://cheeseshop.python.org/pypi -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
Re: WebScraping
On Sun, 05 Nov 2006 08:09:52 +1000, Graham Feeley wrote: Can someone steer me to scripts / modules etc on webscraping please??? The definitive documentation on the built-in Python modules can be found here: http://docs.python.org/modindex.html The ActiveState Python cookbook should be useful, e.g. http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/391929 Also see Beautiful Soup: http://www.crummy.com/software/BeautifulSoup/ And of course, GIYF (Google Is Your Friend) http://www.google.com which leads me to: http://sig.levillage.org/?p=588 http://sig.levillage.org/2005/03/11/web-scraping-with-python-part-ii/ http://wiki.tcl.tk/2915 (not focused on Python, but may still be useful). Ultimately I would like someone to write a script for me. Are you offering to hire a developer? -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
Pyro stability
Hi all, At work I'm considering proposing a solution for our distributed processing system (a web based shopping cart that feeds an actual printing production line) based on Pyro. I've done some minor experiments with this and Pyro looks interesting and like a good implementation of what I want. I've got a couple of questions though: 1) Has anyone had any experience with Pyro, and if so, have you had any stability, or memory use issues running Pyro servers or nameservers on the various participating computers? (We have a mixed environment of Linux and Windows, but will be heading to an all Linux (RedHat) environment soon. 2) One of the guys I work with is more inclined to set up XMLRPC communication between the processes, and he is also leery of running daemon processes. His solution is to have essentially Python CGI code that responds to the various XMLRPC requests. Does anyone have any opinions on this? I know what mine are already. :) 3) I've considered using CORBA, which is more powerful, and certainly faster, but it's complexity to set up compared to the rather simple work I'm trying to do seems prohibative. Does anyone have any thoughts on this? Thanks in advance, Doug -- http://mail.python.org/mailman/listinfo/python-list
Re: To remove some lines from a file
Sebastian Busch [EMAIL PROTECTED] writes:
The task is:
Remove the first two lines that don't begin with @ from a file.
How would you do it with sed?
Why a sed solution in a python group?
sed '/^@/!{G;/\n\n\n/{P;d;};s/[^\n]*//;h;d;}' data
--
John Savage (my news address is not valid for email)
--
http://mail.python.org/mailman/listinfo/python-list
Re: Exploiting Dual Core's with Py_NewInterpreter's separated GIL ?
Paul Rubin schrieb: Martin v. Löwis [EMAIL PROTECTED] writes: PS: Besides: what are speed costs of LOCK INC mem ? That very much depends on the implementation. In http://gcc.gnu.org/ml/java/2001-03/msg00132.html Hans Boehm claims it's 15 cycles. I think that has to be on a single processor, or at most a dual core processor with shared cache on die. With multiple cpu chips I don't think can get the signals around that fast. Can you explain what you mean? The lock# signal takes *immediate* effect, within the CPU cycle in which it is asserted. There is no delay whatsoever (except for speed-of-light issues, of course). Regards, Martin -- http://mail.python.org/mailman/listinfo/python-list
Re: WebScraping
On Sun, 2006-11-05 at 13:40 +1100, Steven D'Aprano wrote: On Sun, 05 Nov 2006 08:09:52 +1000, Graham Feeley wrote: Can someone steer me to scripts / modules etc on webscraping please??? The definitive documentation on the built-in Python modules can be found here: http://docs.python.org/modindex.html The ActiveState Python cookbook should be useful, e.g. http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/391929 Also see Beautiful Soup: http://www.crummy.com/software/BeautifulSoup/ Beautiful soup is not always speedy, but it sure is the most flexible scraper I've ever came across. I hacked together a web forum-to-nntp gateway using Beautiful Soup. Worked very well. Michael And of course, GIYF (Google Is Your Friend) http://www.google.com which leads me to: http://sig.levillage.org/?p=588 http://sig.levillage.org/2005/03/11/web-scraping-with-python-part-ii/ http://wiki.tcl.tk/2915 (not focused on Python, but may still be useful). Ultimately I would like someone to write a script for me. Are you offering to hire a developer? -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
Re: python GUIs comparison (want)
Mudcat wrote: I have been using Tkinter for several years now. Recently I have been thinking about switching to something else that may have a sharper appearance. However I'm not sure what that may be, and if that something else is *that* much better than what I'm already using. Does everyone agree that wxPython looks best on Windows? I've also read in a couple of places where Dabo looks pretty good as well. So if someone were to pick a UI that gave the best appearance, what would they choose? i've been using wxpython for a few years and it's great. it's got far better widgets then tkinter and it's speed is greater on large stuff as well. it's got a great support forum and the maintainer robin dunn does a great job of answering all questions. i can't particularly fault wxpython. it looks great on all platforms and maintain the native look and feel of the platofrm as well. -- http://mail.python.org/mailman/listinfo/python-list
Re: python GUIs comparison (want)
When you say far better widgets, do you mean that it has a greater number of widgets to choose from, or that the types of widgets are basically the same but have a greater amount of flexibility in them? Personally I find programming in Tkinter fairly simple and straight-forward. I'm sure a lot of that is due to the fact I've been using it for a while and have many templates already available when I start to work on something new. But I don't find myself questioning it very much for unnecessary typing like I do other things. As far as appearance goes, I've scoured the net looking for examples of widgets produced wxPython or other UIs, and I really don't see that much difference than Tkinter. Now I haven't done a whole lot of programming on XP, but as far as W2000 is concerned they all look very similar. What would be really cool is if someone were to come up with a UI that has a totally new look and feel than anything that currently exists on Windows. It seems like most of the native look and feel, even in XP, are rather boxy and stale. I don't like Macs, but they do have cool looking windows and frames. Now I hardly know anything at all about low-level windows calls and what is/is not possible. But I know that many applications draw their own windows, skins, and functionality widgets to provide a sharper appearance. It seems like it would be possible for someone to draw these widgets and provide an api to display them through Python. timmy wrote: Mudcat wrote: I have been using Tkinter for several years now. Recently I have been thinking about switching to something else that may have a sharper appearance. However I'm not sure what that may be, and if that something else is *that* much better than what I'm already using. Does everyone agree that wxPython looks best on Windows? I've also read in a couple of places where Dabo looks pretty good as well. So if someone were to pick a UI that gave the best appearance, what would they choose? i've been using wxpython for a few years and it's great. it's got far better widgets then tkinter and it's speed is greater on large stuff as well. it's got a great support forum and the maintainer robin dunn does a great job of answering all questions. i can't particularly fault wxpython. it looks great on all platforms and maintain the native look and feel of the platofrm as well. -- http://mail.python.org/mailman/listinfo/python-list
Re: wing ide vs. komodo?
Forgot to mention WING's file search and replace is pretty cool and powerful. It keeps checking changes in a different thread. If you want to change yyy in say 100 files you would: 1. specify yyy in the search window 2. A list of files get displayed with matching yyy 3. As you fix replace yyy in the files the list of files with matching yyy reduces automatically. This is very cool and very useful. Another thing I like about WING is that it warns you if you have tabs ans spaces mixed in a file. The embedded python shell is also a useful feature. VJ -- http://mail.python.org/mailman/listinfo/python-list
Re: python GUIs comparison (want)
Mudcat [EMAIL PROTECTED] writes: When you say far better widgets, do you mean that it has a greater number of widgets to choose from, or that the types of widgets are basically the same but have a greater amount of flexibility in them? There's a lot more and they look a lot better. Tk widgets are quite stylized and independently of that they look like crap. Personally I find programming in Tkinter fairly simple and straight-forward. Tkinter programming is not too bad once you get used to it, if you don't mind the limited widget set and weird restrictions, that is true. Plus, it's included in the Python distro, which is the main reason I keep using it. That's worked ok for me because the apps I've written with it just needed basic GUI functionality and were not too demanding of stylistic fine points. But Tkinter seriously dated by now, and I don't think its widgets are anywhere near slick enough for wide-distribution desktop apps that have to look polished. What would be really cool is if someone were to come up with a UI that has a totally new look and feel than anything that currently exists on Windows. No that would suck. Best to try to stay as close as possible to the native widgets on whatever the underlying platform is. If you want to depart from the native UI, then start from scratch and write a whole new window system with a complete app suite etc. -- http://mail.python.org/mailman/listinfo/python-list
Re: WebScraping
This might be of help to you. http://phlik.ishpeck.net/index.php?P=a1141076600phlik http://phlik.ishpeck.net/index.php?P=b1134168973phlik Graham Feeley wrote: Can someone steer me to scripts / modules etc on webscraping please??? Ultimately I would like someone to write a script for me. However i am still searching for documentation on this subject Thanks Graham -- http://mail.python.org/mailman/listinfo/python-list
[ python-Bugs-1589480 ] inspect.py imports local tokenize.py file
Bugs item #1589480, was opened at 2006-11-02 12:10 Message generated for change (Settings changed) made by drfarina You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1589480group_id=5470 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Python Library Group: Python 2.4 Status: Open Resolution: None Priority: 5 Private: No Submitted By: Daniel Farina (drfarina) Assigned to: Nobody/Anonymous (nobody) Summary: inspect.py imports local tokenize.py file Initial Comment: urllib2 may do a relative import of tokenize.py, which can cause it to function abnormally when the user has a file named tokenizer.py in the directory as a script that utilizes urllib2. The attached tarball has a shell script called showme.sh that will give standard input to afile.py, which contains two import statements and nothing else. Code in the neighboring tokenize.py will be executed, resulting in printing those lines to standard output. Expected behavior: no code in tokenize.py should be executed. Reproducible on Ubuntu 6.10 -- Comment By: Daniel Farina (drfarina) Date: 2006-11-03 10:26 Message: Logged In: YES user_id=425987 I have a fresh Ubuntu Edgy install (although my home directory is quite old and persistent). I have installed the Python 2.5 package, but am not using it in this case. You are correct, urllib2 doesn't contain the import. I still get the behavior on my machine. On my machine, the following interaction takes place: [EMAIL PROTECTED]:~/urllib2_bug$ ls afile.py show.sh tokenize.py tokenize.pyc [EMAIL PROTECTED]:~/urllib2_bug$ ./show.sh import sys import urllib2 [EMAIL PROTECTED]:~/urllib2_bug$ more show.sh #!/bin/sh cat afile.py | python afile.py [EMAIL PROTECTED]:~/urllib2_bug$ more afile.py import sys import urllib2 [EMAIL PROTECTED]:~/urllib2_bug$ As we can see from the contents of afile.py, it shouldn't be printing anything. -- Comment By: Georg Brandl (gbrandl) Date: 2006-11-03 08:20 Message: Logged In: YES user_id=849994 I can't reproduce that here with your example code, and there's also no mention of tokenize in urllib2.py. In any case, import tokenize is not a relative import, and it's the only way a standard library module can import another standard library module. That this can interfere with user-defined modules is known and must be worked around by not naming them like builtin modules. -- Comment By: Daniel Farina (drfarina) Date: 2006-11-02 12:16 Message: Logged In: YES user_id=425987 Yet another typo: the script is called show.sh It's the only shell script in there, so no fear. -- Comment By: Daniel Farina (drfarina) Date: 2006-11-02 12:11 Message: Logged In: YES user_id=425987 Typo in the above: tokenizer.py should just be tokenize.py -- You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1589480group_id=5470 ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[ python-Bugs-1589480 ] inspect.py imports local tokenize.py file
Bugs item #1589480, was opened at 2006-11-02 12:10 Message generated for change (Comment added) made by drfarina You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1589480group_id=5470 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Python Library Group: Python 2.4 Status: Open Resolution: None Priority: 5 Private: No Submitted By: Daniel Farina (drfarina) Assigned to: Nobody/Anonymous (nobody) Summary: inspect.py imports local tokenize.py file Initial Comment: urllib2 may do a relative import of tokenize.py, which can cause it to function abnormally when the user has a file named tokenizer.py in the directory as a script that utilizes urllib2. The attached tarball has a shell script called showme.sh that will give standard input to afile.py, which contains two import statements and nothing else. Code in the neighboring tokenize.py will be executed, resulting in printing those lines to standard output. Expected behavior: no code in tokenize.py should be executed. Reproducible on Ubuntu 6.10 -- Comment By: Daniel Farina (drfarina) Date: 2006-11-04 02:09 Message: Logged In: YES user_id=425987 I have done something slightly less lazy and had the tokenize.py file throw an exception. The result was not in fact stemming from urllib2, but the inspect.py file. I have duplicated this issue on a fresh install of Edgy on a VM at work (from scratch, no home directory preservation or anything). I'm perfectly willing to accept that I should file this in Ubuntu's launchpad instead. I pray I am not a complete crackpot. Here is a new transcription of my interactions (slightly edited for brevity): [EMAIL PROTECTED] ~/inspect_bug]$ more * :: afile.py :: import inspect #some random text. #more text. #maybe even some more. :: show.sh :: #!/bin/sh cat afile.py | python afile.py :: tokenize.py :: import sys for line in sys.stdin: print line raise Exception, 'Shouldn\'t be here' [EMAIL PROTECTED] ~/inspect_bug]$ ./show.sh import inspect #some random text. #more text. #maybe even some more. Traceback (most recent call last): File afile.py, line 1, in ? import inspect File /usr/lib/python2.4/inspect.py, line 31, in ? import sys, os, types, string, re, dis, imp, tokenize, linecache File /home/fdr/inspect_bug/tokenize.py, line 6, in ? raise Exception, 'Shouldn\'t be here' Exception: Shouldn't be here [EMAIL PROTECTED] ~/inspect_bug]$ -- Comment By: Daniel Farina (drfarina) Date: 2006-11-03 10:26 Message: Logged In: YES user_id=425987 I have a fresh Ubuntu Edgy install (although my home directory is quite old and persistent). I have installed the Python 2.5 package, but am not using it in this case. You are correct, urllib2 doesn't contain the import. I still get the behavior on my machine. On my machine, the following interaction takes place: [EMAIL PROTECTED]:~/urllib2_bug$ ls afile.py show.sh tokenize.py tokenize.pyc [EMAIL PROTECTED]:~/urllib2_bug$ ./show.sh import sys import urllib2 [EMAIL PROTECTED]:~/urllib2_bug$ more show.sh #!/bin/sh cat afile.py | python afile.py [EMAIL PROTECTED]:~/urllib2_bug$ more afile.py import sys import urllib2 [EMAIL PROTECTED]:~/urllib2_bug$ As we can see from the contents of afile.py, it shouldn't be printing anything. -- Comment By: Georg Brandl (gbrandl) Date: 2006-11-03 08:20 Message: Logged In: YES user_id=849994 I can't reproduce that here with your example code, and there's also no mention of tokenize in urllib2.py. In any case, import tokenize is not a relative import, and it's the only way a standard library module can import another standard library module. That this can interfere with user-defined modules is known and must be worked around by not naming them like builtin modules. -- Comment By: Daniel Farina (drfarina) Date: 2006-11-02 12:16 Message: Logged In: YES user_id=425987 Yet another typo: the script is called show.sh It's the only shell script in there, so no fear. -- Comment By: Daniel Farina (drfarina) Date: 2006-11-02 12:11 Message: Logged In: YES user_id=425987 Typo in the above: tokenizer.py should just be tokenize.py -- You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1589480group_id=5470 ___ Python-bugs-list mailing list Unsubscribe:
[ python-Bugs-1588287 ] python: Python/ast.c:541: seq_for_testlist: Assertion fails
Bugs item #1588287, was opened at 2006-10-31 15:05 Message generated for change (Comment added) made by nnorwitz You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1588287group_id=5470 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Parser/Compiler Group: None Status: Closed Resolution: Fixed Priority: 5 Private: No Submitted By: Tom Epperly (tepperly) Assigned to: Neal Norwitz (nnorwitz) Summary: python: Python/ast.c:541: seq_for_testlist: Assertion fails Initial Comment: I 1. downloaded Python 2.5 final wget 'http://www.python.org/ftp/python/2.5/Python-2.5.tar.bz2' 2. edited Python-2.5/Objects/obmalloc.c to uncomment the #define Py_USING_MEMORY_DEBUGGER line (I plan to run valgrind on this installation of Python) 3. ./configure --without-pymalloc --with-pydebug --prefix=/somewhere/python2_5 4. make and then make install 5. next I downloaded and extracted numpy-1.0.tar.gz from Sourceforge: http://sourceforge.net/project/showfiles.php?group_id=1369package_id=175103 When I try to run the setup.py for numpy-1.0, I get an assertion failure. [EMAIL PROTECTED] numpy-1.0]$ python setup.py install Running from numpy source directory. python: Python/ast.c:541: seq_for_testlist: Assertion `((n)-n_type) == 326 || ((n)-n_type) == 318 || ((n)-n_type) == 319 || ((n)-n_type) == 300' failed. Abort [EMAIL PROTECTED] numpy-1.0]$ -- Comment By: Neal Norwitz (nnorwitz) Date: 2006-11-04 11:36 Message: Logged In: YES user_id=33168 Note: If you change `1,2` to `(1,2)` the assertion won't trigger. -- Comment By: Neal Norwitz (nnorwitz) Date: 2006-11-04 11:33 Message: Logged In: YES user_id=33168 Thanks for the report. My guess was close, the problem was: `1,2`. Committed revision 52621. (2.6) Committed revision 52622. (2.5.1) -- Comment By: Neal Norwitz (nnorwitz) Date: 2006-11-03 11:27 Message: Logged In: YES user_id=33168 Sorry, total brainfart. I saw the pymalloc line above and got that stuck in my mind. You are correct that assertions are only enabled with pydebug. Can you find the python code that causes the assertion to trigger. Once I have a simple test case I should be able to fix the problem fast. If my guess is correct, the code might look something like: `[]` (ie a list or generator expr inside back ticks). -- Comment By: Tom Epperly (tepperly) Date: 2006-11-03 10:58 Message: Logged In: YES user_id=94539 I think using --with-pydebug makes the assert statements live, and the default (--without-pydebug) skips the assert() statements. I think it would take a great deal of time to understand the implementation of Python well enough for me to debug this myself. Sorry, I don't think there is much I can do more than reporting it. -- Comment By: Neal Norwitz (nnorwitz) Date: 2006-11-03 00:48 Message: Logged In: YES user_id=33168 That's weird. This is definitely a non-standard configuration, but it should work. I don't understand why it would matter if using pydebug or not. It shouldn't make a diff. It would take quite a while to setup the same config. Can you debug this further? Either find the python code that's causing the problem or the problem in the C code? My guess is the only way this could happen based on the grammar is a list inside backticks ``. But I couldn't reproduce it. -- Comment By: Tom Epperly (tepperly) Date: 2006-10-31 15:16 Message: Logged In: YES user_id=94539 If I drop the --with-pydebug from the configure line, it runs the NumPy's setup.py without error. -- You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1588287group_id=5470 ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[ python-Bugs-1590036 ] __getattr__ = getattr crash
Bugs item #1590036, was opened at 2006-11-03 08:44 Message generated for change (Comment added) made by nnorwitz You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1590036group_id=5470 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Python Interpreter Core Group: Python 2.5 Status: Open Resolution: None Priority: 6 Private: No Submitted By: Brian Harring (ferringb) Assigned to: Armin Rigo (arigo) Summary: __getattr__ = getattr crash Initial Comment: class c(object):__getattr__ = getattr c().spam segfault from overflowing the c stack Now granted... it's retarded to attempt this. But out of curiousity, I decided to be the retard, and noticed the interpreter crashes instead of triggering a RuntimeError for recursion. As far as I know, getattr is instrumented with Py_EnterRecursiveCall and Py_LEaveRecursiveCall... so a bit curious as to how it's occuring. -- Comment By: Neal Norwitz (nnorwitz) Date: 2006-11-04 11:40 Message: Logged In: YES user_id=33168 The attached patch fixes this problem. However, I'm concerned there are more places like this. I hope Armin has some ideas if more things are needed to fix this problem. -- You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1590036group_id=5470 ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[ python-Bugs-1590592 ] where is zlib???
Bugs item #1590592, was opened at 2006-11-04 19:51 Message generated for change (Tracker Item Submitted) made by Item Submitter You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1590592group_id=5470 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Windows Group: Python 2.5 Status: Open Resolution: None Priority: 5 Private: No Submitted By: AKap (aleksey_kap) Assigned to: Nobody/Anonymous (nobody) Summary: where is zlib??? Initial Comment: Python2.5 for win32 msi-installer - where are zlib.dll and zlib.pyd ??? -- You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1590592group_id=5470 ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[ python-Bugs-1589480 ] inspect.py imports local tokenize.py file
Bugs item #1589480, was opened at 2006-11-02 12:10 Message generated for change (Comment added) made by drfarina You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1589480group_id=5470 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Python Library Group: Python 2.4 Status: Closed Resolution: Invalid Priority: 5 Private: No Submitted By: Daniel Farina (drfarina) Assigned to: Nobody/Anonymous (nobody) Summary: inspect.py imports local tokenize.py file Initial Comment: urllib2 may do a relative import of tokenize.py, which can cause it to function abnormally when the user has a file named tokenizer.py in the directory as a script that utilizes urllib2. The attached tarball has a shell script called showme.sh that will give standard input to afile.py, which contains two import statements and nothing else. Code in the neighboring tokenize.py will be executed, resulting in printing those lines to standard output. Expected behavior: no code in tokenize.py should be executed. Reproducible on Ubuntu 6.10 -- Comment By: Daniel Farina (drfarina) Date: 2006-11-04 12:40 Message: Logged In: YES user_id=425987 Oops. Sorry about that... -- Comment By: Martin v. Löwis (loewis) Date: 2006-11-04 07:27 Message: Logged In: YES user_id=21627 As gbrandl explains, it is an error to name your own modules with the names of the modules of the standard library. As you have a module named tokenize, and as tokenize is also a module of the standard library, the bug is in your code. Closing this report as invalid. -- Comment By: Daniel Farina (drfarina) Date: 2006-11-04 02:09 Message: Logged In: YES user_id=425987 I have done something slightly less lazy and had the tokenize.py file throw an exception. The result was not in fact stemming from urllib2, but the inspect.py file. I have duplicated this issue on a fresh install of Edgy on a VM at work (from scratch, no home directory preservation or anything). I'm perfectly willing to accept that I should file this in Ubuntu's launchpad instead. I pray I am not a complete crackpot. Here is a new transcription of my interactions (slightly edited for brevity): [EMAIL PROTECTED] ~/inspect_bug]$ more * :: afile.py :: import inspect #some random text. #more text. #maybe even some more. :: show.sh :: #!/bin/sh cat afile.py | python afile.py :: tokenize.py :: import sys for line in sys.stdin: print line raise Exception, 'Shouldn\'t be here' [EMAIL PROTECTED] ~/inspect_bug]$ ./show.sh import inspect #some random text. #more text. #maybe even some more. Traceback (most recent call last): File afile.py, line 1, in ? import inspect File /usr/lib/python2.4/inspect.py, line 31, in ? import sys, os, types, string, re, dis, imp, tokenize, linecache File /home/fdr/inspect_bug/tokenize.py, line 6, in ? raise Exception, 'Shouldn\'t be here' Exception: Shouldn't be here [EMAIL PROTECTED] ~/inspect_bug]$ -- Comment By: Daniel Farina (drfarina) Date: 2006-11-03 10:26 Message: Logged In: YES user_id=425987 I have a fresh Ubuntu Edgy install (although my home directory is quite old and persistent). I have installed the Python 2.5 package, but am not using it in this case. You are correct, urllib2 doesn't contain the import. I still get the behavior on my machine. On my machine, the following interaction takes place: [EMAIL PROTECTED]:~/urllib2_bug$ ls afile.py show.sh tokenize.py tokenize.pyc [EMAIL PROTECTED]:~/urllib2_bug$ ./show.sh import sys import urllib2 [EMAIL PROTECTED]:~/urllib2_bug$ more show.sh #!/bin/sh cat afile.py | python afile.py [EMAIL PROTECTED]:~/urllib2_bug$ more afile.py import sys import urllib2 [EMAIL PROTECTED]:~/urllib2_bug$ As we can see from the contents of afile.py, it shouldn't be printing anything. -- Comment By: Georg Brandl (gbrandl) Date: 2006-11-03 08:20 Message: Logged In: YES user_id=849994 I can't reproduce that here with your example code, and there's also no mention of tokenize in urllib2.py. In any case, import tokenize is not a relative import, and it's the only way a standard library module can import another standard library module. That this can interfere with user-defined modules is known and must be worked around by not naming them like builtin modules. -- Comment By: Daniel Farina (drfarina) Date: 2006-11-02 12:16 Message: Logged In: YES user_id=425987
[ python-Bugs-1590036 ] __getattr__ = getattr crash
Bugs item #1590036, was opened at 2006-11-03 10:44 Message generated for change (Comment added) made by ferringb You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1590036group_id=5470 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Python Interpreter Core Group: Python 2.5 Status: Open Resolution: None Priority: 6 Private: No Submitted By: Brian Harring (ferringb) Assigned to: Armin Rigo (arigo) Summary: __getattr__ = getattr crash Initial Comment: class c(object):__getattr__ = getattr c().spam segfault from overflowing the c stack Now granted... it's retarded to attempt this. But out of curiousity, I decided to be the retard, and noticed the interpreter crashes instead of triggering a RuntimeError for recursion. As far as I know, getattr is instrumented with Py_EnterRecursiveCall and Py_LEaveRecursiveCall... so a bit curious as to how it's occuring. -- Comment By: Brian Harring (ferringb) Date: 2006-11-04 21:57 Message: Logged In: YES user_id=874085 can do the same trick with hasattr also (same type of fix)... -- Comment By: Neal Norwitz (nnorwitz) Date: 2006-11-04 13:40 Message: Logged In: YES user_id=33168 The attached patch fixes this problem. However, I'm concerned there are more places like this. I hope Armin has some ideas if more things are needed to fix this problem. -- You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1590036group_id=5470 ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[ python-Bugs-1574217 ] isinstance swallows exceptions
Bugs item #1574217, was opened at 2006-10-09 21:55
Message generated for change (Comment added) made by ferringb
You can respond by visiting:
https://sourceforge.net/tracker/?func=detailatid=105470aid=1574217group_id=5470
Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: Python Library
Group: Python 2.4
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Brian Harring (ferringb)
Assigned to: Nobody/Anonymous (nobody)
Summary: isinstance swallows exceptions
Initial Comment:
Attached is a simple example; yes, a bit contrived, but
it's exactly what bit me in the ass for a week or two :)
nestled within abstract.c's recursive_isinstance, is
this lil nugget-
icls = PyObject_GetAttr(inst, __class__);
if (icls == NULL) {
PyErr_Clear();
retval = 0;
}
else {
No surrouding comments to indicate *why* it's
swallowing exceptions, but best explanation I've heard
was that it was attempting to swallow just
AttributeError... which would make sense.
So the question is, whats the purpose of it swallowing
exceptions there? Bad form of AttributeError catching,
or some unstated reason?
--
Comment By: Brian Harring (ferringb)
Date: 2006-11-04 22:06
Message:
Logged In: YES
user_id=874085
quicky patch for this; basically, wipe the exception only if
it's AttributeError, else let it bubble it's way up.
--
Comment By: Brian Harring (ferringb)
Date: 2006-10-09 21:56
Message:
Logged In: YES
user_id=874085
addition note; this is both 2.5 and 2.4, probably stretches
bit further back also.
--
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