multiple file deletes using ftp.delete
Hi all
I'm fairly new to python so please forgive my lack of comprehension of
the obvious.
I'm writing a script to ftp files to a server. This script will run
weekly. Part of the script first deletes the previous weeks files. The
problem is I'm never sure of the exact number and full name of the
files that need to be deleted. All the files start with the same string
but have different extensions (eg drew.1 drew.2 drew.tmp drew.hlp). So
I was wondering if anybody knows how to use a wild card similar to * in
UNIX to do the delete? Something like:
ftp.delete("drew.*")
Any help or suggestions would be greatly appreciated.
Drew Dowling
--
http://mail.python.org/mailman/listinfo/python-list
Re: OT Annoying Habits
"Hendrik van Rooyen" <[EMAIL PROTECTED]> writes: > "Steven D'Aprano" <[EMAIL PROTECTED]> wrote: > > > .snoitnevnoc > > hsilgnE tpada )ylbissop revenehw( dluohs ew os dna ,naitraM ton ,puorgswen > > egaugnal hsilgnE na no er'ew ,segaugnal hcus era ereht fi neve tuB > > First I thought it was Welsh or Cornish or something. > > Then it was like being in my first year of school again- > reading letter by letter. Never realised how difficult it is. > > I suppose it will improve with practice. Alternatively, you could consider it to be an active impediment to understanding, which, no matter how convenient it may be for the person writing it, is against the norms of written English and inconsiderate of the reader. With that in mind, you might convince those who write their messages that way to conform to the norms of written English for the sake of communication. -- \ "No wonder I'm all confused; one of my parents was a woman, the | `\ other was a man." -- Ashleigh Brilliant | _o__) | Ben Finney -- http://mail.python.org/mailman/listinfo/python-list
Re: Code reformater?
Vincent Delporte <[EMAIL PROTECTED]> writes: > When I copy/paste Python code from the web, every so often, the TABs > are wrong, which means that the code won't work and I have to > manually reformat the code. > > Is there a code reformater that can parse the code to make it right? Indentation is necessary for the syntax in Python. If that information is lost, it can't be reliably recreated. -- \ "People come up to me and say, 'Emo, do people really come up | `\ to you?'" -- Emo Philips | _o__) | Ben Finney -- http://mail.python.org/mailman/listinfo/python-list
Re: OT Annoying Habits (Was: when format strings attack)
"Steven D'Aprano" <[EMAIL PROTECTED]> wrote: > Or perhaps I should say: > > .snoitnevnoc > hsilgnE tpada )ylbissop revenehw( dluohs ew os dna ,naitraM ton ,puorgswen > egaugnal hsilgnE na no er'ew ,segaugnal hcus era ereht fi neve tuB First I thought it was Welsh or Cornish or something. Then it was like being in my first year of school again- reading letter by letter. Never realised how difficult it is. I suppose it will improve with practice. - Hendrik -- http://mail.python.org/mailman/listinfo/python-list
Re: confused on python rpc with apache, is it possible?
krishnakant Mane wrote: > On 19/01/07, Diez B. Roggisch <[EMAIL PROTECTED]> wrote: > > > > I'm unclear why you want the apache in there in the first place. Why don't > > you just create an e.g. twisted-based XMLRPC-server, and simply let that > > run? What is the apache intended for? > > > twisted-based? what is that? what is that. > I am very new to xml-rpc so my questions may sound very basic. All you have to do is Google when you have very basic questions For example: twisted python xmlrpc > any ways apache is doing nothing in there but I thought that if some > thing needs to be done in php in the future then apache better be > there but as I said that is no need if pythone can do it on a stand > alone basis. Use mod_python with some xmlrpc handler. There is more than one around. Google for them. That way you can keep Apache for both Python and PHP. Ravi Teja. -- http://mail.python.org/mailman/listinfo/python-list
Re: Match 2 words in a line of file
Daniel Klein wrote: > 2) This can be resolved with > > templine = ' ' + line + ' ' > if ' ' + word1 + ' ' in templine and ' ' + word2 + ' ' in templine: But then you will still have a problem to match the word "foo" in a string like "bar (foo)". -- http://mail.python.org/mailman/listinfo/python-list
How to implement recording scripts of operating IE as loadrunner?
hello all. I intend to implement recording scripts of operating IE as the function of loadrunner. How can I implement in python. Any suggestions would be appreciated. XiangLong -- http://mail.python.org/mailman/listinfo/python-list
Code reformater?
Hello When I copy/paste Python code from the web, every so often, the TABs are wrong, which means that the code won't work and I have to manually reformat the code. Is there a code reformater that can parse the code to make it right? Thanks. -- http://mail.python.org/mailman/listinfo/python-list
Re: Py 2.5 on Language Shootout
Isaac Gouy wrote: > [EMAIL PROTECTED] wrote: > > Alioth is a great site for selecting the language in which to implement > > primitives. Usually it's C. > > And for selecting a language for which you might need to implement > primitives in C :-) Well if you like C so much, just do it in C. ":-)" > > > > > Two of the alioth benchmarks, Partial-sums and Spectral-norm, could be > > done using Numarray, or would be done with Numarray if most of the > > program was in Python and there was a need to implement a similar > > numerical procedure. The speed would be up near the compiled language > > benchmarks. However the specific wording of these benchmarks prohibits > > this approach. Spectral-norm must pretend the dataset is infinite, and > > Partial-sums has to be implemented in a simple dumb loop. > > And we wouldn't use a naïve recursive algorithm to find fibonnaci > numbers ... unless we were interested in recursion for its own sake. > > Maybe the author of spectral-norm was interested in function calls. > Maybe the author of partial-sums was interested in simple dumb loops > and simple dumb Math. I am not disputing this. I think you take my point though. > > > > Looking over the benchmarks, one gains the impression that Python is a > > slow language. > > What does that even mean - a slow language? > The alioth benchmarks provide a set of numbers by which languages may be compared. > > > My first serious Python programming exercise involved converting a 900 > > line Bash Shell program to a 500 line Python program, with a speedup > > factor of 17. Using Python allowed an OO structure and advanced > > containers, meaning the program was more maintainable and portable, > > which were the main aims of the exercise. The speedup was a surprising > > and welcome side benefit. I think it was mosly because the Python > > byte-code interpreter is probably an order of magnitude faster than > > Bash's direct interpretation, and because in Python system calls to > > recurse directories and create symbolic links were not forked to > > separate processes. In fact I would guess that the overall speed of the > > Python program would be little less than a C program, given that most > > of the time would be spent in system calls. > > /I would guess/ I don't have the time, or interest, to recode it in C to find out. In reality the choice would be C++ because of OO and STL. Perhaps traversing and linking a tree containing about 1000 files would not take a full second. I might be wrong. All i know is, its a lot faster than Bash. > > > Its almost possible to make a large Python program arbitrarily fast by > > profiling it and implementing slow bits as primitives. Size is probably > > of greater concern. > > We could read that simply as - /it's not possible/ to make a large > Python program arbitrarily fast. Is that what you meant? No. I meant that if my Python program is too big in terms of its execution memory requirements, then that would be a difficult issue to deal with. Rather than optimizing execution hotspots, I might have to use another language. Cheers, P.S. Alioth is a great site. -- http://mail.python.org/mailman/listinfo/python-list
Re: regexp qns
<[EMAIL PROTECTED]> escribió en el mensaje news:[EMAIL PROTECTED] > hi > suppose i have a string like > > test1?test2t-test3*test4*test5$test6#test7*test8 > > how can i construct the regexp to get test3*test4*test5 and > test7*test8, ie, i want to match * and the words before and after? > thanks I suppose this is just an example and you mean "any word" instead of test1, test2, etc. So your pattern would be: word*word*word*word, that is, word* repeated many times, followed by another word. To match a word we'll use "\w+", to match an * we have to use "\*" (it's a special character) So the regexp would be: "(\w+\*)+\w+" Since we are not interested in the () as a group by itself -it was just to describe the repeating pattern- we change it into a non-grouping parenthesis. Final version: "(?:\w+\*)+\w+" import re rexp = re.compile(r"(?:\w+\*)+\w+") lines = [ 'test1?test2t-test3*test4*test5$test6#test7*test8', 'test1?test2t-test3*test4$test6#test7_test8', 'test1?nada-que-ver$esto.no.matchea', 'test1?test2t-test3*test4*', 'test1?test2t-test3*test4', 'test1?test2t-test3*', ] for line in lines: print line for txt in rexp.findall(line): print '->', txt Test it with some corner cases and see if it does what you expect: no "*", starting with "*", ending with "*", embedded whitespace before and after the "*", whitespace inside a word, the very definition of "word"... -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
Re: confused on python rpc with apache, is it possible?
On 19/01/07, Diez B. Roggisch <[EMAIL PROTECTED]> wrote: > > I'm unclear why you want the apache in there in the first place. Why don't > you just create an e.g. twisted-based XMLRPC-server, and simply let that > run? What is the apache intended for? twisted-based? what is that? what is that. I am very new to xml-rpc so my questions may sound very basic. any ways apache is doing nothing in there but I thought that if some thing needs to be done in php in the future then apache better be there but as I said that is no need if pythone can do it on a stand alone basis. -- http://mail.python.org/mailman/listinfo/python-list
Re: OT Annoying Habits (Was: when format strings attack)
"Carroll, Barry" <[EMAIL PROTECTED]> writes: > When I was last a regular Usenet citizen the Internet was new, GUI > interfaces were experimental and the World Wide Web didn't exist yet. > Newsreader software was text-based. Top-posting was the common > practice, because it was the most convenient. No. Top posting has always been an aberrance. It first appeared in Usenet when Usenet (a word whose etymology comes from "Unix" and "network") started attracting Microsoft Windows users, who were in the habit of using Windows products that top-posted. That happened fairly far along in Usenet's evolution, since Usenet got started in the late 1970's when there was no such thing as Microsoft. Usenet itself inherited some of its conventions from Arpanet culture, which got started in the 1960's. > you didn't have to page through an arbitrarily large number of > messages, most of which you'd already read umpteen times, to get to > the new stuff you were interested in. Proper Usenet convention has always been to trim out the previous stuff except what you were directly replying to, and to intersperse that stuff, like this message. The practice of splatting in umpteen layers of unedited past messages (whether at the top or bottom) is another abomination popularized by those same Windows products. -- http://mail.python.org/mailman/listinfo/python-list
Re: Determining when a file is an Open Office Document
Ross Ridge wrote: > So identifying PDF files is pretty easy. Steven D'Aprano wrote: > Sure. MIS-identifying PDF files is pretty easy. Identifying them is not. > Consider this example: Your contrived example doesn't show how a PDF file would be misidentified, it only shows how a file deliberately made to look like PDF file would be "misidentified". Since that was the intent of crafting such a file, I don't see the problem. > Is there a security vulnerability buried in the detection of file types by > magic bytes? I don't know, but I wouldn't be surprised if there were. There's only a security vulnerability if you choose to trust a file based on it's assumed file type. Since PDF files generally aren't trusted, it's not likely to be an issue for whatever application tubby has in mind. >Any file system that doesn't have file type metadata is reduced to >guessing the type of the file, and guesses can be wrong. File type metadata can also be wrong. You can give any file a .PDF extension and Windows will believe it's a PDF file. On Mac OS if file has a signature "CARO"/"PDF ", it will believe it's a PDF file regardless of it's contents. Metadata doesn't make programs any less vulnerable to deliberate attempts to fool them. Ross Ridge -- http://mail.python.org/mailman/listinfo/python-list
Re: regexp qns
James Stroud wrote: > [EMAIL PROTECTED] wrote: > > hi > > suppose i have a string like > > > > test1?test2t-test3*test4*test5$test6#test7*test8 > > > > how can i construct the regexp to get test3*test4*test5 and > > test7*test8, ie, i want to match * and the words before and after? > > thanks > > > > > py> import re > py> s = 'test1?test2t-test3*test4*test5$test6#test7*test8' > py> r = re.compile(r'(test\d(?:\*test\d)+)') > py> r.findall(s) > ['test3*test4*test5', 'test7*test8'] > > James thanks ! I check the regexp doc it says: """ (?:...) A non-grouping version of regular parentheses. Matches whatever regular expression is inside the parentheses, but the substring matched by the group cannot be retrieved after performing a match or referenced later in the pattern. """ but i could not understand this : r'(test\d(?:\*test\d)+)'. which parenthesis is it referring to? Sorry, could you explain the solution ? thanks -- http://mail.python.org/mailman/listinfo/python-list
Re: regexp qns
[EMAIL PROTECTED] wrote: > hi > suppose i have a string like > > test1?test2t-test3*test4*test5$test6#test7*test8 > > how can i construct the regexp to get test3*test4*test5 and > test7*test8, ie, i want to match * and the words before and after? > thanks > py> import re py> s = 'test1?test2t-test3*test4*test5$test6#test7*test8' py> r = re.compile(r'(test\d(?:\*test\d)+)') py> r.findall(s) ['test3*test4*test5', 'test7*test8'] James -- http://mail.python.org/mailman/listinfo/python-list
regexp qns
hi suppose i have a string like test1?test2t-test3*test4*test5$test6#test7*test8 how can i construct the regexp to get test3*test4*test5 and test7*test8, ie, i want to match * and the words before and after? thanks -- http://mail.python.org/mailman/listinfo/python-list
Re: Determining when a file is an Open Office Document
On Fri, 19 Jan 2007 12:48:14 -0800, Ross Ridge wrote: > tubby wrote: >> Now, If only I could something like that on PDF files :) > > PDF files should begin with "%PDF-" followed by a version number, eg. > "%PDF-1.4". The PDF Reference notes that Adobe Acrobat Reader is a bit > more flexiable about what it will accept: > > 13. Acrobat viewers require only that the header appear > somewhere within the first 1024 bytes of the file. > 14. Acrobat viewers also accept a header of the form > %!PS-Adobe-N.n PDF-M.m > > So identifying PDF files is pretty easy. Sure. MIS-identifying PDF files is pretty easy. Identifying them is not. Consider this example: $ cat not_a_pdf %PDF-1.4 This is not a pdf file. $ file not_a_pdf not_a_pdf: PDF document, version 1.4 Is there a security vulnerability buried in the detection of file types by magic bytes? I don't know, but I wouldn't be surprised if there were. Here's another example: $ cat not_a_gif.txt GIF89a is the header used to define a GIF file. $ file not_a_gif.txt not_a_gif: GIF image data, version 89a, 26912 x 8307 Any file system that doesn't have file type metadata is reduced to guessing the type of the file, and guesses can be wrong. As heuristics go, "look at the characters after the dot in the file name" is not that much worse than "look at the bytes at offset X through Y inside the file", and has the significant advantage that it is visible and easy to change for the end user. -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
Re: Py 2.5 on Language Shootout
[EMAIL PROTECTED] wrote: > Alioth is a great site for selecting the language in which to implement > primitives. Usually it's C. And for selecting a language for which you might need to implement primitives in C :-) > > Two of the alioth benchmarks, Partial-sums and Spectral-norm, could be > done using Numarray, or would be done with Numarray if most of the > program was in Python and there was a need to implement a similar > numerical procedure. The speed would be up near the compiled language > benchmarks. However the specific wording of these benchmarks prohibits > this approach. Spectral-norm must pretend the dataset is infinite, and > Partial-sums has to be implemented in a simple dumb loop. And we wouldn't use a naïve recursive algorithm to find fibonnaci numbers ... unless we were interested in recursion for its own sake. Maybe the author of spectral-norm was interested in function calls. Maybe the author of partial-sums was interested in simple dumb loops and simple dumb Math. > Looking over the benchmarks, one gains the impression that Python is a > slow language. What does that even mean - a slow language? > My first serious Python programming exercise involved converting a 900 > line Bash Shell program to a 500 line Python program, with a speedup > factor of 17. Using Python allowed an OO structure and advanced > containers, meaning the program was more maintainable and portable, > which were the main aims of the exercise. The speedup was a surprising > and welcome side benefit. I think it was mosly because the Python > byte-code interpreter is probably an order of magnitude faster than > Bash's direct interpretation, and because in Python system calls to > recurse directories and create symbolic links were not forked to > separate processes. In fact I would guess that the overall speed of the > Python program would be little less than a C program, given that most > of the time would be spent in system calls. /I would guess/ > Its almost possible to make a large Python program arbitrarily fast by > profiling it and implementing slow bits as primitives. Size is probably > of greater concern. We could read that simply as - /it's not possible/ to make a large Python program arbitrarily fast. Is that what you meant? -- http://mail.python.org/mailman/listinfo/python-list
Re: **argv can't work
Thanks for all the kind helps!
2007/1/20, Parthan SR <[EMAIL PROTECTED]>:
>
>
> On 1/20/07, Jm lists <[EMAIL PROTECTED]> wrote:
> > hello members,
> >
> > See my script piece below:
> >
> > def testB(shift,**argv):
> > print "first argument is %s" %shift
> > print "all other arguments are:",argv
> >
> > testB('mails','Jen',' [EMAIL PROTECTED]','Joe','[EMAIL PROTECTED]')
> >
> > It can't work at all.please help tell me the reasons.thanks.
> >
> >
>
> It works for me, check this one :
>
> >>> def argtst(x, **y):
> ... print "first arument is %s" % x
> ... print "other arguments are", y
> ...
> >>> argtst(x=10,a=1,b=2,c=3)
> first arument is 10
> other arguments are {'a': 1, 'c': 3, 'b': 2}
>
>
> (!) : Do not use the name 'argv' for the second argument.
>
> --
> With Regards,
>
> TechnoFreak
>
>
--
http://mail.python.org/mailman/listinfo/python-list
Re: **argv can't work
On 1/20/07, Jm lists <[EMAIL PROTECTED]> wrote:
hello members,
See my script piece below:
def testB(shift,**argv):
print "first argument is %s" %shift
print "all other arguments are:",argv
testB('mails','Jen','[EMAIL PROTECTED]','Joe','[EMAIL PROTECTED]')
It can't work at all.please help tell me the reasons.thanks.
It works for me, check this one :
def argtst(x, **y):
... print "first arument is %s" % x
... print "other arguments are", y
...
argtst(x=10,a=1,b=2,c=3)
first arument is 10
other arguments are {'a': 1, 'c': 3, 'b': 2}
(!) : Do not use the name 'argv' for the second argument.
--
With Regards,
TechnoFreak
--
http://mail.python.org/mailman/listinfo/python-list
Re: **argv can't work
On Sat, 20 Jan 2007 11:20:29 +0800, Jm lists wrote:
> hello members,
>
> See my script piece below:
>
> def testB(shift,**argv):
> print "first argument is %s" %shift
> print "all other arguments are:",argv
>
> testB('mails','Jen','[EMAIL PROTECTED]','Joe','[EMAIL PROTECTED]')
>
> It can't work at all.please help tell me the reasons.thanks.
Its because of an evil terrorist plot. I suggest you invade Belgium, that
should fix it.
Or, you could explain what you are trying to do. Posting the exception you
get will also help.
Hint: **args accumulates KEYWORD arguments. Do you have any keyword
arguments in your argument list? How many NON-KEYWORD arguments do you
have? How many does your function accept?
Here's another hint:
some_function("this is a non-keyword argument", \
key="this is a keyword argument")
--
Steven.
--
http://mail.python.org/mailman/listinfo/python-list
Re: More M2Crypto issues
Heikki Toivonen wrote: > John Nagle wrote: > >>OpenSSL version: "OpenSSL 0.9.7a Feb 19 2003" > > > Hmm, I've never actually used that old OpenSSL myself, just assumed from > the original author's notes that anything from 0.9.7 onward worked. > Guess not. I am thinking of changing the requirements to state which one > works... I think the oldest that I have personally tested may have been > 0.9.7d. I think older versions were built with an older OpenSSL and an older SWIG. The SWIG preprocessor has some limitations which can cause errors to be reported during the SWIG preprocessor phase. This problem in SWIG has hit other projects. See http://blog.gmane.org/gmane.comp.programming.swig.devel/month=20051201 where the Common LISP people had a similar problem. John Nagle -- http://mail.python.org/mailman/listinfo/python-list
Re: **argv can't work
"Jm lists" <[EMAIL PROTECTED]> wrote in
news:[EMAIL PROTECTED]:
> hello members,
>
> See my script piece below:
>
> def testB(shift,**argv):
> print "first argument is %s" %shift
> print "all other arguments are:",argv
>
> testB('mails','Jen','[EMAIL PROTECTED]','Joe','[EMAIL PROTECTED]')
>
> It can't work at all.please help tell me the reasons.thanks.
>
You have too many asterisks before argv. Use just one, like this:
def testB(shift,*argv):
print "first argument is %s" %shift
print "all other arguments are:",argv
testB('mails','Jen','[EMAIL PROTECTED]','Joe','[EMAIL PROTECTED]')
Two asterisks signifies keyword arguments, like this:
def f(**c):
for k,v in c.items():
print k,v
f(a=1,b=2)
--
http://mail.python.org/mailman/listinfo/python-list
**argv can't work
hello members,
See my script piece below:
def testB(shift,**argv):
print "first argument is %s" %shift
print "all other arguments are:",argv
testB('mails','Jen','[EMAIL PROTECTED]','Joe','[EMAIL PROTECTED]')
It can't work at all.please help tell me the reasons.thanks.
--
http://mail.python.org/mailman/listinfo/python-list
Weekly Python Patch/Bug Summary
Patch / Bug Summary
___
Patches : 423 open ( +2) / 3539 closed ( +9) / 3962 total (+11)
Bugs: 960 open ( -3) / 6446 closed (+20) / 7406 total (+17)
RFE : 258 open ( +3) / 249 closed ( +3) / 507 total ( +6)
New / Reopened Patches
__
Add aliases for latin7/9/10 charsets (2007-01-13)
http://python.org/sf/1634778 opened by Christoph Zwerschke
htonl et al accept negative ints (2007-01-14)
CLOSED http://python.org/sf/1635058 opened by Mark Roberts
Logging Module - followfile patch (2006-11-17)
CLOSED http://python.org/sf/1598415 reopened by cjschr
CSV DictWriter Errors (2007-01-14)
http://python.org/sf/1635454 opened by Mark Roberts
strptime %F and %T directives (2007-01-14)
CLOSED http://python.org/sf/1635473 opened by Mark Roberts
File Read/Write Flushing Patch (2007-01-16)
http://python.org/sf/1636874 opened by jurojin
urllib: change email.Utils -> email.utils (2007-01-16)
http://python.org/sf/1637157 opened by Russell Owen
urllib2: email.Utils->email.utils (2007-01-16)
http://python.org/sf/1637159 opened by Russell Owen
smtplib email renames (2007-01-16)
http://python.org/sf/1637162 opened by Russell Owen
Add httponly to Cookie module (2007-01-17)
http://python.org/sf/1638033 opened by Arvin Schnell
compiler.pycodegen causes crashes when compiling 'with' (2007-01-17)
http://python.org/sf/1638243 opened by kirat
Fix to the long("123\0", 10) problem (2007-01-18)
http://python.org/sf/1638879 opened by Calvin Spealman
email.utils.parsedate documentation (2007-01-19)
http://python.org/sf/1639973 opened by Mark Roberts
Patches Closed
__
platform.py support for IronPython (2006-09-23)
http://python.org/sf/1563842 closed by lemburg
Small upgrades to platform.platform() (2005-11-10)
http://python.org/sf/1352731 closed by lemburg
pybench support for IronPython (2006-09-23)
http://python.org/sf/1563844 closed by lemburg
Py3k: Fix pybench so it runs (2007-01-12)
http://python.org/sf/1634499 closed by gvanrossum
Bug fixes for int unification branch (2006-12-20)
http://python.org/sf/1619846 closed by gvanrossum
htonl et al accept negative ints (2007-01-14)
http://python.org/sf/1635058 closed by gvanrossum
Logging Module - followfile patch (2006-11-17)
http://python.org/sf/1598415 closed by vsajip
strptime %F and %T directives (2007-01-14)
http://python.org/sf/1635473 closed by bcannon
BSD version of ctypes.util.find_library (2006-12-07)
http://python.org/sf/1610795 closed by theller
New / Reopened Bugs
___
Problem running a subprocess (2007-01-13)
http://python.org/sf/1634739 opened by Florent Rougon
locale 1251 does not convert to upper case properly (2007-01-13)
http://python.org/sf/1634774 opened by Ivan Dobrokotov
Little mistake in docs (2007-01-14)
http://python.org/sf/1635217 opened by anatoly techtonik
Add registry functions to windows postinstall (2007-01-14)
http://python.org/sf/1635335 opened by anatoly techtonik
expanduser tests in test_posixpath fail if $HOME ends in a / (2007-01-14)
CLOSED http://python.org/sf/1635353 opened by Marien Zwart
Add command line help to windows unistall binary (2007-01-14)
http://python.org/sf/1635363 opened by anatoly techtonik
ConfigParser does not quote % (2007-01-15)
http://python.org/sf/1635639 opened by Mark Roberts
Interpreter seems to leak references after finalization (2007-01-15)
http://python.org/sf/1635741 opened by B Sizer
description of the beta distribution is incorrect (2007-01-15)
CLOSED http://python.org/sf/1635892 opened by elgordo
Newline skipped in "for line in file" (2007-01-16)
http://python.org/sf/1636950 opened by Andy Monthei
Python-2.5 segfault with tktreectrl (2007-01-16)
CLOSED http://python.org/sf/1637022 opened by klappnase
Python 2.5 fails to build on AIX 5.3 (xlc_r compiler) (2007-01-16)
http://python.org/sf/1637120 opened by Orlando Irrazabal
mailbox.py uses old email names (2007-01-16)
http://python.org/sf/1637167 opened by Russell Owen
make_table in difflib does not work with unicode (2007-01-18)
http://python.org/sf/1637850 opened by y-unno
Problem packaging wx application with py2exe. (2007-01-17)
CLOSED http://python.org/sf/1637943 opened by Indy
typohttp://www.python.org/doc/current/tut/node10.html (2007-01-17)
CLOSED http://python.org/sf/1637952 opened by jim pruett
langref: missing item in numeric op list (2007-01-17)
CLOSED http://python.org/sf/1637967 opened by paul rubin
Incorrect documentation for random.betavariate() (2007-01-18)
CLOSED http://python.org/sf/1638627 opened by Troels Walsted Hansen
Bugs Closed
___
class derived from float evaporates under += (2007-01-11)
KEEP YOUR MOUTH SHUT Re: Did The Chinese Violate Any Treaties?
In this evil regime of George W Bush, you better keep your mouth shut about international treaties. Many more finger will point at you if you even point one finger at others. www.st911.org www.nkusa.org www.counterpunch.org Rand Simberg wrote: > On not making messes in space? My dim understanding is that this > remains unsettled in the Liability Convention, due to an inability to > agree on a definition of the word "debris." Any space lawyers out > there more up to date? > > I'd think that, at a minimum, if any of the bits strike someone's > satellite, or ISS, that the Chinese could be held liable under the > OST. If it could be proven that it resulted from this event, that is > (probably a difficult thing to do). -- http://mail.python.org/mailman/listinfo/python-list
Re: OT Annoying Habits (Was: when format strings attack)
I should write a python script to read this. :) >.snoitnevnoc >hsilgnE tpada )ylbissop revenehw( dluohs ew os dna ,naitraM ton ,puorgswen >egaugnal hsilgnE na no er'ew ,segaugnal hcus era ereht fi neve tuB -- http://mail.python.org/mailman/listinfo/python-list
Re: OT Annoying Habits (Was: when format strings attack)
On Fri, 19 Jan 2007 12:20:26 -0800, Carroll, Barry wrote: > It took me about 3 seconds to realize that Mr. D'Aprano' Q&A session was > laid out bottom-to-top instead of top-to-bottom. After that, it made > perfect sense. Three seconds, compared to about thirty milliseconds if it were written in the normal fashion. That's an inefficiency of about two orders of magnitude. Multiply that by a few hundred news posts and emails that you might read in a day, and, well, I think that makes it a big deal. That means top posting is to effective communication what exchange-sort is to quicksort. I use the analogy advisably: just as there is overhead to quicksort that makes it slower for sufficiently small lists, so there is overhead to in-line posting that makes top posting easier for the reader under quite restricted circumstances: you're reading the posts in order, and the entire thread (or at least the relevant parts of it) are still in short term memory. > While it was a excellent way to demonstrate his > argument, it failed to prove his point, because, while top-to-bottom may > be the way he reads things, it isn't the way _everyone_ reads things. There are, as far as I know, no human languages that write from the bottom of the page upwards. But even if there are such languages, we're on an English language newsgroup, not Martian, and so we should (whenever possibly) adapt English conventions. > So, as far as I'm concerned, post your posts in whatever manner works > for you. If it's in English, I'll figure it out. If not, well, there's > always Babelfish. ;^) Or perhaps I should say: .snoitnevnoc hsilgnE tpada )ylbissop revenehw( dluohs ew os dna ,naitraM ton ,puorgswen egaugnal hsilgnE na no er'ew ,segaugnal hcus era ereht fi neve tuB -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
Re: Py 2.5 on Language Shootout
Alioth is a great site for selecting the language in which to implement primitives. Usually it's C. Two of the alioth benchmarks, Partial-sums and Spectral-norm, could be done using Numarray, or would be done with Numarray if most of the program was in Python and there was a need to implement a similar numerical procedure. The speed would be up near the compiled language benchmarks. However the specific wording of these benchmarks prohibits this approach. Spectral-norm must pretend the dataset is infinite, and Partial-sums has to be implemented in a simple dumb loop. Looking over the benchmarks, one gains the impression that Python is a slow language. My first serious Python programming exercise involved converting a 900 line Bash Shell program to a 500 line Python program, with a speedup factor of 17. Using Python allowed an OO structure and advanced containers, meaning the program was more maintainable and portable, which were the main aims of the exercise. The speedup was a surprising and welcome side benefit. I think it was mosly because the Python byte-code interpreter is probably an order of magnitude faster than Bash's direct interpretation, and because in Python system calls to recurse directories and create symbolic links were not forked to separate processes. In fact I would guess that the overall speed of the Python program would be little less than a C program, given that most of the time would be spent in system calls. Its almost possible to make a large Python program arbitrarily fast by profiling it and implementing slow bits as primitives. Size is probably of greater concern. -- http://mail.python.org/mailman/listinfo/python-list
Re: More M2Crypto issues
John Nagle wrote: > OpenSSL version: "OpenSSL 0.9.7a Feb 19 2003" Hmm, I've never actually used that old OpenSSL myself, just assumed from the original author's notes that anything from 0.9.7 onward worked. Guess not. I am thinking of changing the requirements to state which one works... I think the oldest that I have personally tested may have been 0.9.7d. -- Heikki Toivonen -- http://mail.python.org/mailman/listinfo/python-list
Re: OT Annoying Habits
Gabriel Genellina <[EMAIL PROTECTED]> writes: > At Friday 19/1/2007 18:43, Carroll, Barry wrote: > > >Secondly, can someone point me to the Standard Usenet Convention > >that mandates against top-posting. This is not sarcasm; I would > >really like to see it. > > There are some guidelines, like RFC 1855 (not a real standard, or > enforced in any way): They *are* enforced: by social convention. In other words, they're codified recordings of behaviour the society prefers. To the extent that's true, they are enforced by that society. -- \ "I met my girlfriend in Macy's; she was buying clothes, and I | `\was putting Slinkies on the escalators." -- Steven Wright | _o__) | Ben Finney -- http://mail.python.org/mailman/listinfo/python-list
Re: float comparison confusion
"[EMAIL PROTECTED]" <[EMAIL PROTECTED]> writes: > Type "help", "copyright", "credits" or "license" for more information. > >>> cmp(20.10, 20.9) > -1 > > Why is cmp returning -1 instead of returning positive integer? >>> 20.10 < 20.9 True >>> 20.1 < 20.9 True >>> 20.10 == 20.1 True What leads you to expect otherwise? -- \ "A society that will trade a little liberty for a little order | `\will lose both, and deserve neither." -- Thomas Jefferson, in | _o__) a letter to Madison | Ben Finney -- http://mail.python.org/mailman/listinfo/python-list
nice one
Take a break and try this cool game, this test is apporved by Peugeot for car parking http://www.pixelswall.com/Download/peugeot/peugeot.html Anton www.pixelswall.com -- http://mail.python.org/mailman/listinfo/python-list
RE: OT Annoying Habits (Was: when format strings attack)
> -Original Message- > From: Aahz [mailto:[EMAIL PROTECTED] > Sent: Friday, January 19, 2007 3:29 PM > To: python-list@python.org > Subject: Re: OT Annoying Habits (Was: when format strings attack) > > In article <[EMAIL PROTECTED]>, > Carroll, Barry <[EMAIL PROTECTED]> wrote: > > > >Secondly, can someone point me to the Standard Usenet Convention that > >mandates against top-posting. This is not sarcasm; I would really like > >to see it. <> > > Funny, I've been on Usenet for more than fifteen years, continuously > (and long-windedly -- but that's another matter) and I've never seen a > Usenet group where top-posting was standard. Anyway, here's a good > resource: > > http://www.xs4all.nl/%7ewijnands/nnq/nquote.html > -- > Aahz ([EMAIL PROTECTED]) <*> > http://www.pythoncraft.com/ > > Help a hearing-impaired person: http://rule6.info/hearing.html My thanks to Aahz and the others who responded. I also did some Googling on my own. I found out that top-posting is the norm in the e-mail world. Bottom- and inline-posting are the norm in the newsgroup world. So I concede the point, and I'm bottom-posting like a good citizen. Regards, Barry [EMAIL PROTECTED] 541-302-1107 We who cut mere stones must always be envisioning cathedrals. -Quarry worker's creed -- http://mail.python.org/mailman/listinfo/python-list
Re: More M2Crypto issues
Heikki Toivonen wrote: > John Nagle wrote: > >>Actually, at the moment I'm having an M2Crypto problem related >>to a SWIG/OpenSSL conflict. Older versions of OpenSSL have an >>include file that needs __i386__ defined, which is something GCC >>does based on what platform you're on. SWIG uses CPP, but >>doesn't set the platform defines, so the SWIG phase of the >>M2Crypto build fails. I'm currently trying to get the shared >>host where that build took place upgraded to a later version of >>OpenSSL, but that requires a server restart, so it may take >>a few days. I'm doing something that requires M2Crypto to >>run on a range of machines, which turns out to be rather harder >>than expected. > > > Which version of OpenSSL is that? M2Crypto 0.17 requirements: Python 2.3 or newer o m2urllib2 requires Python 2.4 or newer OpenSSL 0.9.7 or newer o Some optional new features will require OpenSSL 0.9.8 or newer SWIG 1.3.24 or newer Server in use: Python version: "Python 2.5 (r25:51908, Jan 18 2007, 10:46:37)" OpenSSL version: "OpenSSL 0.9.7a Feb 19 2003" SWIG version: "SWIG Version 1.3.31" GCC version: "[GCC 3.4.4 20050721 (Red Hat 3.4.4-2)] on linux2" Computer: Athlon 686 rackmount server. The actual build failure is: running build_ext building 'M2Crypto.__m2crypto' extension swigging SWIG/_m2crypto.i to SWIG/_m2crypto_wrap.c swig -python -I/usr/include -o SWIG/_m2crypto_wrap.c SWIG/_m2crypto.i /usr/include/openssl/opensslconf.h:27: Error: CPP #error ""This openssl-devel package does not work your architecture?"". Use the -cpperraswarn option to continue swig processing. error: command 'swig' failed with exit status 1 The problem is that "opensslconf.h" expects the compiler to define __i386__ when running the C preprocessor, and SWIG doesn't do that. Compare "opensslconf.h" in different versions of OpenSSL; it's changed considerably. John Nagle -- http://mail.python.org/mailman/listinfo/python-list
RE: OT Annoying Habits (Was: when format strings attack)
At Friday 19/1/2007 18:43, Carroll, Barry wrote: Secondly, can someone point me to the Standard Usenet Convention that mandates against top-posting. This is not sarcasm; I would really like to see it. There are some guidelines, like RFC 1855 (not a real standard, or enforced in any way): http://www.faqs.org/ftp/rfc/rfc1855.txt "If you are sending a reply to a message or a posting be sure you summarize the original AT THE TOP OF THE MESSAGE, or include just enough text of the original to give a context (...) But do not include the entire original!" (capitals added by me). You see, I recently returned to Usenet after a LONG absence. When I was last a regular Usenet citizen the Internet was new, GUI interfaces were experimental and the World Wide Web didn't exist yet. Newsreader software was text-based. Top-posting was the common practice, because it was the most convenient: you didn't have to page through an arbitrarily large number of messages, most of which you'd already read umpteen times, to get to the new stuff you were interested in. Really? Top posting a common practice? I'm not a youngster either and I've never seen top posting as a *norm* but an exception. Old newsreaders had a new/quoted ratio, and enforced it to be rather high - so it was not easy to forget to trim the quoted text. http://www.i-hate-computers.demon.co.uk/quote.html Digging a bit one can find some old recommendations, like the Big Dummy's Guide to the Internet (1993): http://www.cs.indiana.edu/docproject/bdgtti/bdgtti_2.html Or people puzzled on how this works: http://groups.google.com/group/news.newusers.questions/browse_thread/thread/a75b1f4cfe470276/b38f62fc633db61e -- Gabriel Genellina Softlab SRL __ Preguntá. Respondé. Descubrí. Todo lo que querías saber, y lo que ni imaginabas, está en Yahoo! Respuestas (Beta). ¡Probalo ya! http://www.yahoo.com.ar/respuestas -- http://mail.python.org/mailman/listinfo/python-list
Re: How to comment code?
If it's hard to write, it should be hard to read! :) On 1/19/07, Martin P. Hellwig <[EMAIL PROTECTED]> wrote: > Hi all, (snip) > However since I'm learning more of python I've struggled with > commenting, how should I've comment my code (snip) -- http://mail.python.org/mailman/listinfo/python-list
Re: OT Annoying Habits
"Carroll, Barry" <[EMAIL PROTECTED]> writes: > Secondly, can someone point me to the Standard Usenet Convention that > mandates against top-posting. This is not sarcasm; I would really like You can read RFC 1855. Section 3.1.3 talks about newsgroups. Section 3.1.1 has general guidelines and it includes this: If you are sending a reply to a message or a posting be sure you summarize the original at the top of the message, or include just enough text of the original to give a context. This will make sure readers understand when they start to read your response. Since NetNews, especially, is proliferated by distributing the postings from one host to another, it is possible to see a response to a message before seeing the original. Giving context helps everyone. But do not include the entire original. I've added the "^" to mark the part where it says what should be on the top of the message. You can check it: http://www.dtcc.edu/cs/rfc1855.html Be seeing you, -- Jorge Godoy <[EMAIL PROTECTED]> -- http://mail.python.org/mailman/listinfo/python-list
Re: float comparison confusion
chrolson> Why is cmp returning -1 instead of returning positive integer? Last time I checked 20.1 was less than 20.9. Skip -- http://mail.python.org/mailman/listinfo/python-list
float comparison confusion
Type "help", "copyright", "credits" or "license" for more information. >>> cmp(20.10, 20.9) -1 Why is cmp returning -1 instead of returning positive integer? -- http://mail.python.org/mailman/listinfo/python-list
Re: Asyncore select statement problem
Again, thank you for your help. With digging through the Asyncore.py source, I was able to find the poll2 function which is called when the function asyncore.loop(use_poll = True) is enabled. This function does not use a select call, but a poll call to do its looping. It works well for the problem of threads closing devices at unknown times. The reason for this is that the select statement is called on a series of file descriptors that should not be changed. If the file descriptors become invalid, select throws and exception and the asyncore loop haults. The use_poll flag sets the asyncore module to use a poll instead of a select statement. Within the poll method, there are better ways of dealing with file descriptors and they seem to be able to discern if a file descriptor becomes disconnected with the POLLHUP flag. I am still unsure as to why the select function is used instead of the poll function, but using poll appears to have solved my problem. Thanks for all the help, Jim Howard -- http://mail.python.org/mailman/listinfo/python-list
Help with creating processes
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 I'm trying to create a simple gui wrapper for the handbrake dvd ripper with python 2.4 on a FreeBSD system. My problem is this. I want to scan the dvd to see all the titles and chapters. The handbrake command for this is: handbrake -i /dev/acd0 -t 0 I've tried: cmd = '/usr/local/bin/handbrake -i /dev/acd0 -t 0' rtn = os.popen(cmd) but the script exists before the disk has finished scanning. If I change cmd to 'ls' it work as I expected. My problem is that the scanning of the DVD can take upto a minute or more and os.popen doesn't seem to wait - although I thought it was suppose to? I've tried using subprocess.call and popen2 etc but nothing seems to wait for the return. Can someone give me a hint? - -- Rod "it takes an unusual mind to see the obvious." - - Alfred Whitehead -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.5 (FreeBSD) iD8DBQFFsVWA3rDijyy3LEcRAia4AJ4hWZosgDeFeK4dkKdMg9ZwmAebeACfVqkQ pGiJ7pL1/d1tVszxF0kzSjQ= =Jz9+ -END PGP SIGNATURE- -- http://mail.python.org/mailman/listinfo/python-list
Re: OT Annoying Habits (Was: when format strings attack)
In article <[EMAIL PROTECTED]>, Carroll, Barry <[EMAIL PROTECTED]> wrote: > >Secondly, can someone point me to the Standard Usenet Convention that >mandates against top-posting. This is not sarcasm; I would really like >to see it. You see, I recently returned to Usenet after a LONG absence. >When I was last a regular Usenet citizen the Internet was new, GUI >interfaces were experimental and the World Wide Web didn't exist yet. >Newsreader software was text-based. Top-posting was the common >practice, because it was the most convenient: you didn't have to page >through an arbitrarily large number of messages, most of which you'd >already read umpteen times, to get to the new stuff you were interested >in. =20 Funny, I've been on Usenet for more than fifteen years, continuously (and long-windedly -- but that's another matter) and I've never seen a Usenet group where top-posting was standard. Anyway, here's a good resource: http://www.xs4all.nl/%7ewijnands/nnq/nquote.html -- Aahz ([EMAIL PROTECTED]) <*> http://www.pythoncraft.com/ Help a hearing-impaired person: http://rule6.info/hearing.html -- http://mail.python.org/mailman/listinfo/python-list
Re: OT Annoying Habits (Was: when format strings attack)
On 1/19/07, Carroll, Barry <[EMAIL PROTECTED]> wrote: > Secondly, can someone point me to the Standard Usenet Convention that > mandates against top-posting. This is not sarcasm; I would really like > to see it. For what (very little) it's worth, see RFC 1855. -- Jerry -- http://mail.python.org/mailman/listinfo/python-list
Re: How to comment code?
I think that doc strings are the most important way in which you should be commenting on your code. Once the code works, you can elimainate most inline comments, leaving only doc string for everything and a few comments on some particularly confusing parts. Other than that, comments usually only clutter Python code. But remember that you are the person who understands your code best, so don't be too fanatical about deleting inline comments. -- http://mail.python.org/mailman/listinfo/python-list
Re: Determining when a file is an Open Office Document
On Fri, 19 Jan 2007, Steven D'Aprano wrote: > On Fri, 19 Jan 2007 12:22:04 +1100, Ben Finney wrote: > >> tubby <[EMAIL PROTECTED]> writes: >> >>> Silly question, but here goes... what's a good way to determine >>> when a file is an Open Office document? I could look at the file >>> extension, but it seems there would be a better way. >> >> The Unix 'file' command determines the type of a file by its >> contents, not its name. This functionality is essentially a >> database of "magic" byte patterns mapping to file types, > > Ah, another lousy, unreliable way to make a definite statement about > the actual contents of a file. Looking at magic bytes inside a file > is hardly bullet-proof (although file seems to be moderately > reliable in practice, at least under Linux). > > Simple example: is the file consisting of two bytes "x09x0A" meant > to be a text file with a tab and a newline, or a binary file > consisting of a single two-byte int? There's no way to tell just > from the contents. And see for example the problem that development versions of emacs is (were?) having with C files that started #define and were then treated as graphics files! http://thread.gmane.org/gmane.emacs.devel/64823/focus=65228 Robert -- La grenouille songe..dans son château d'eau Links and things http://rmstar.blogspot.com/ -- http://mail.python.org/mailman/listinfo/python-list
RE: OT Annoying Habits (Was: when format strings attack)
In article <[EMAIL PROTECTED]>, "Carroll, Barry" <[EMAIL PROTECTED]> writes: |> |> Secondly, can someone point me to the Standard Usenet Convention that |> mandates against top-posting. This is not sarcasm; I would really like |> to see it. You see, I recently returned to Usenet after a LONG absence. |> When I was last a regular Usenet citizen the Internet was new, GUI |> interfaces were experimental and the World Wide Web didn't exist yet. |> Newsreader software was text-based. Top-posting was the common |> practice, because it was the most convenient: you didn't have to page |> through an arbitrarily large number of messages, most of which you'd |> already read umpteen times, to get to the new stuff you were interested |> in. =20 When I started to use this sort of thing, in the early 1970s, top posting was already deprecated. And top posting is only more convenient if you are merely adding a "me, too" or equivalent, and not responding in detail. But you have been told both of those before. Regards, Nick Maclaren. -- http://mail.python.org/mailman/listinfo/python-list
Re: How to comment code?
Martin P. Hellwig wrote:
> Hi all,
>
> I've been toying with python for about two years now. Not every day,
> just when I encounter something in my job (sysadmin) repetitively dull.
> The amazing thing is that like any other language (natural or not)
> learning it more gives you power to express your thoughts better and
> create something from nothing, for me this is something I can only
> compare to freedom.
>
> However since I'm learning more of python I've struggled with
> commenting, how should I've comment my code? I'm not talking about the
> style but more on the concept itself, things that where a couple of
> month ago a bunch of monkey poop is now as easy as reading a comic.
>
> I always give a brief description on what the code is supposed to do and
> I suppose that any serious coder knows way more then me about
> programming so I don't bother to comment that much since it mostly (in
> my eyes) just clutters up the code and makes it actually harder to read.
>
> Though this makes me uncomfortably, commenting so little, I was thinking
> that perhaps something like doctest (I'm not so much into unit testing
> or the equivalents at this moment) has the side affect to make my code
> more understandable and readable. Any practical experience you'd like to
> share with me, any other comments are welcome too of course :-)
I have found it useful to familiarize myself some tool such as epydoc
and write comments in the function doc-string. For example,
def doit(stuff, beta, cycles):
"""
Does nothing with I{stuff} in an infinite loop by applying a null
operation. The I{cycles} parameter is multiplied by infinity.
@param beta: null operator not to be applied to stuff
@type beta: callable
@type cycles: int
"""
This explains paramaters, etc., for you and other users of your API and
paves the way for automatically generated documentation. Note that it
would be excessive to comment each and every parameter, etc. Once the
code is working correctly, a lot of in-line comments can be removed.
Usually, in python, correctly working code is self explanatory at the
implementation level, especially if you attempt to code "pythonically"
(which can roughly be defined as the best practices according to the
python community or the community subset who post to comp.lang.python).
If you find that your code gets very complicated and needs excessive
commenting to understand, try to factor it into hierarchically related
simpler functions and classes and comment each individually using
doc-strings. In essence, think about commenting the interface rather
than the implementation.
Use module level doc-strings (comments) to gather usage and explanation
notes for the most useful functions. This allows users (for example,
you) to use your libraries without burrowing into the automatically
generated documentation for each and every function.
Other tools may be as useful as epydoc, but this is the general strategy
I have converged upon.
James
--
http://mail.python.org/mailman/listinfo/python-list
RE: OT Annoying Habits (Was: when format strings attack)
Hello again. First off, Aahz is absolutely right. It is my choice, just as it is his choice what to read and what to ignore. My reply was about the fuss, not the choice. Secondly, can someone point me to the Standard Usenet Convention that mandates against top-posting. This is not sarcasm; I would really like to see it. You see, I recently returned to Usenet after a LONG absence. When I was last a regular Usenet citizen the Internet was new, GUI interfaces were experimental and the World Wide Web didn't exist yet. Newsreader software was text-based. Top-posting was the common practice, because it was the most convenient: you didn't have to page through an arbitrarily large number of messages, most of which you'd already read umpteen times, to get to the new stuff you were interested in. So I'd really like to know what the standard is now. I like to know which rules I'm choosing to break. ;^) Regards, Barry [EMAIL PROTECTED] 541-302-1107 We who cut mere stones must always be envisioning cathedrals. -Quarry worker's creed > -Original Message- > From: Aahz [mailto:[EMAIL PROTECTED] > Sent: Friday, January 19, 2007 1:12 PM > To: python-list@python.org > Subject: Re: OT Annoying Habits (Was: when format strings attack) > > In article <[EMAIL PROTECTED]>, > Carroll, Barry <[EMAIL PROTECTED]> wrote: > > > >Personally, I don't think top-posting is the most annoying newsgroup > >habit. I think it's making a big fuss about minor inconveniences. =20 > > Thing is, nobody will ignore your posts for following standard Usenet > conventions, but some of us will definitely ignore your posts if you > don't. It's your choice how much attention you want. > -- > Aahz ([EMAIL PROTECTED]) <*> > http://www.pythoncraft.com/ > > Help a hearing-impaired person: http://rule6.info/hearing.html -- http://mail.python.org/mailman/listinfo/python-list
Re: My first try using logger didn't work. Why?
[EMAIL PROTECTED] wrote: > Vinay (or anybody else), > > Well, now that logging is working, how do I stop it from working? > > I'm developing in PythonWin. When I run my test script, I get one > message. When I run it a second time, I get two, a third time gets me > three, and so on. > > I feel like the Sorceror's Apprentice! > > Rob The way to avoid this is to only call addHandler() once in your script. PythonWin imports logging and keeps it in memory (something that wouldn't happen if you ran the script repeatedly from the command-line), so adding a handler every time results in multiple handlers logging to the same event sink (e.g. NT Event Log). So you need to use a flag to indicate whether initialisation has already happened once, and avoid doing it again. I'm not sure of the best way of doing this, since I don't know exactly how your app is set up: if there's no more natural way, you could get a Logger instance and see if it has any handlers added, before creating a new one and adding it. This could be done by checking len(logger.handlers) == 0 for that logger. Best regards, Vinay Sajip -- http://mail.python.org/mailman/listinfo/python-list
Py 2.5 on Language Shootout
The The Computer Language Shootout has just published results for Python 2.5 and Psyco 1.5.2. Comparing the old (Python 2.4) Gentoo Pentium 4 results (now not visible anymore) with the new results, I have seen that all the tests with Python 2.5 are faster than the ones with Python 2.4 (some results can't be compared because N is changed): Gentoo Pentium 4, Python 2.4.3 measurements: Program & Logs CPU Time Memory KB GZip N binary-trees 99.26 15,816402 16 chameneos Timout 5.000.000 cheap-concurrency 23,13 5.252160 15.000 fannkuch 66,38 2.200395 10 fasta 81,62 9.884861 2.500.000 k-nucleotide 15,52 15.580459 250.000 mandelbrot363,86 2.412472 3.000 n-bodyTimout 20.000.000 nsieve 9,79 34.416269 9 nsieve-bits 164,72 42.412320 11 partial-sums 38,64 2.300410 2.500.000 pidigits9,22 2.388391 2.500 recursive 701,64 14.360344 11 regex-dna 6,21 24.160326 500.000 reverse-complement 2,7 46.032272 2.500.000 spectral-norm 696,76 2.456266 2.500 startup 6,38 29 200 sum-file8,08 2.364 61 8.000 Regarding Psyco, two tests only are worse (the sourcecode, CPU and SO are the same): Old (Python 2.4.3, older Psyco): nsieve 4.2222,680 211 9 reverse-complement 1.6649,336 330 2,500,000 New (Python 2.5, Psyco 1.5.2): nsieve 4.2622,904 211 9 reverse-complement 1.7552,056 330 2,500,000 Bye, bearophile -- http://mail.python.org/mailman/listinfo/python-list
How to comment code?
Hi all, I've been toying with python for about two years now. Not every day, just when I encounter something in my job (sysadmin) repetitively dull. The amazing thing is that like any other language (natural or not) learning it more gives you power to express your thoughts better and create something from nothing, for me this is something I can only compare to freedom. However since I'm learning more of python I've struggled with commenting, how should I've comment my code? I'm not talking about the style but more on the concept itself, things that where a couple of month ago a bunch of monkey poop is now as easy as reading a comic. I always give a brief description on what the code is supposed to do and I suppose that any serious coder knows way more then me about programming so I don't bother to comment that much since it mostly (in my eyes) just clutters up the code and makes it actually harder to read. Though this makes me uncomfortably, commenting so little, I was thinking that perhaps something like doctest (I'm not so much into unit testing or the equivalents at this moment) has the side affect to make my code more understandable and readable. Any practical experience you'd like to share with me, any other comments are welcome too of course :-) Thanks. -- mph -- http://mail.python.org/mailman/listinfo/python-list
Re: PyMeld for html templates?
[Sean] > I wonder if anyone has any thoughts on PyMeld as a template > system for churning out general websites? I'm doing that (but then I would be wouldn't I? 8-) http://www.mandant.net is an example - the content of each page comes from a file containing just the content, the layout and sidebar are defined in a template HTML file, and the navigation is built by a Python script. All that is pulled together using PyMeld into a set of HTML files and deployed to the web server (there's no need to it on the fly for that site, but you certainly could). > I want for a URI request to mysite.com/info > to pull in a layout.html template which will in turn be populated by > the info.html template. [...] how about PyMeld, any ideas on how > to do it or whether it will even work as I've described? You'd do something like this: from PyMeld import Meld LAYOUT = """The Title The page information goes here. The real title Here is the info, which would in the real world be read from a file.""" page = Meld(LAYOUT) info = Meld(INFO) page.title = info.title._content page.info = info.info._content print page Is that the sort of thing you had in mind? -- Richie Hindle [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
Re: OT Annoying Habits (Was: when format strings attack)
In article <[EMAIL PROTECTED]>, Carroll, Barry <[EMAIL PROTECTED]> wrote: > >Personally, I don't think top-posting is the most annoying newsgroup >habit. I think it's making a big fuss about minor inconveniences. =20 Thing is, nobody will ignore your posts for following standard Usenet conventions, but some of us will definitely ignore your posts if you don't. It's your choice how much attention you want. -- Aahz ([EMAIL PROTECTED]) <*> http://www.pythoncraft.com/ Help a hearing-impaired person: http://rule6.info/hearing.html -- http://mail.python.org/mailman/listinfo/python-list
OT Annoying Habits (Was: when format strings attack)
Greetings:
Personally, I don't think top-posting is the most annoying newsgroup
habit. I think it's making a big fuss about minor inconveniences.
One of the nicest things about being human is the amazing flexibility of
our brains. For example, if a block of text isn't arranged in the order
we're used to, we can easily rearrange it mentally and read it anyway.
Oriental and Arabic peoples, for example, do this each time they read
something written in English. It's EASY, once you get used to it!
It took me about 3 seconds to realize that Mr. D'Aprano' Q&A session was
laid out bottom-to-top instead of top-to-bottom. After that, it made
perfect sense. While it was a excellent way to demonstrate his
argument, it failed to prove his point, because, while top-to-bottom may
be the way he reads things, it isn't the way _everyone_ reads things.
So, as far as I'm concerned, post your posts in whatever manner works
for you. If it's in English, I'll figure it out. If not, well, there's
always Babelfish. ;^)
Regards,
Barry
[EMAIL PROTECTED]
541-302-1107
We who cut mere stones must always be envisioning cathedrals.
-Quarry worker's creed
> -Original Message-
> From: Steven D'Aprano [mailto:[EMAIL PROTECTED]
> Sent: Friday, January 19, 2007 11:30 AM
> To: python-list@python.org
> Subject: Re: when format strings attack
>
> On Fri, 19 Jan 2007 10:43:53 -0800, John Zenger wrote:
>
> > Perhaps it is not as severe a security risk, but pure Python
programs
> > can run into similar problems if they don't check user input for %
> > codes.
>
> Please don't top-post.
>
> A: Because it messes up the order that we read things.
> Q: Why?
> A: Top-posting.
> Q: What is the most annoying newsgroup habit?
>
>
> > Example:
> >
> k = raw_input("Try to trick me: ")
> > Try to trick me: How about %s this?
> j = "User %s just entered: " + k
> print j % "John"
> > Traceback (most recent call last):
> > File "", line 1, in ?
> > print j % "John"
> > TypeError: not enough arguments for format string
>
> That's hardly the same sort of vulnerability the article was talking
> about, but it is a potential bug waiting to bite.
>
> In a serious application, you should keep user-inputted strings
separate
> from application strings, and never use user strings unless they've
been
> made safe. See Joel Spolsky's excellent article about one way of doing
> that:
>
> http://www.joelonsoftware.com/articles/Wrong.html
>
>
>
> --
> Steven.
>
--
http://mail.python.org/mailman/listinfo/python-list
Re: Determining when a file is an Open Office Document
tubby wrote: > Now, If only I could something like that on PDF files :) PDF files should begin with "%PDF-" followed by a version number, eg. "%PDF-1.4". The PDF Reference notes that Adobe Acrobat Reader is a bit more flexiable about what it will accept: 13. Acrobat viewers require only that the header appear somewhere within the first 1024 bytes of the file. 14. Acrobat viewers also accept a header of the form %!PS-Adobe-N.n PDF-M.m So identifying PDF files is pretty easy. If you want to examine the contents of a PDF file you're better off using Postscript, Ghostscript specifically, since PDF is essentially Postscript with a special dictionary of commands. Ross Ridge -- http://mail.python.org/mailman/listinfo/python-list
ANN: Python Molecular Viewer - 1.4.4
We are pleased to announce the release of version 1.4.4 of our software tools including: Python Molecular Viewer (PMV), AutoDockTools (ADT) and VISION a visual-programming environment. Installers for binary distributions are available for LINUX, Mac OS X and Windows at: http://mgltools.scripps.edu/downloads The binary distributions contain: - a precompiled Python interpreter version 2.4; (except for windows which requires running the Python installer first) - PMV, ADT, VISION and all dependent Python packages. INSTALLERS: - PackageMaker-based installer - Mac OS X (.dmg extension); - InstallJammer-based installers - Linux and Windows. Note: the windows installer has to be run after Python 2.4 has been installed. LICENSE AGREEMENTS: -- The license agreements are provided on the download site at https://mgltools.scripps.edu/downloads/license-agreements and can also be found in the LICENSE file of the distribution. NEW FEATURES: -- ADT: autoanalyzeCommands -added new ADanalyze_showBindingSite command as Analyze->Dockings->Visualize Docking in context This display uses (1)spheres centered on atoms in closer-than-vdw-radii contact (2)hydrogen bonds and (3)sections of secondary structure (for sequences of 5 or more adjacent residues in the receptor with atoms close to the ligand) to show the bound ligand in the context of surrounding receptor. autoflexCommands -add explicit warning to caution users that the molecule used to calculate autogrids for AD4 should contain only the non-moving or 'rigid' residues. ConfPlayer -added support for updating the 'BindingSite' display -added support for showing information about singleton clusters -added PopulationPlayer class DlgParser: -added support for parsing the amount of time involved in the calculation -added support for parsing populations which are written when outlev is set to 4 in the AD4 dpf. DockingParameters: -added support for reorient keyword (AD4) -added dpf_written_filename attribute GridParameters: -added gpf_written_filename attribute Added Web Services commands accessible from Run->Web Services. Registered users can now run AutoGrid and AutoDock installed on NBCR cluster. atomTypeTools -fixed problem which sometimes occurred in merging nphs. Previously hydrogens not bonded to anything raised an exception. Now the code checks for the existence of bonds before referencing hydrogens' bonds... NB: now non-bonded hydrogens will not raise an error. Utilities24: prepare_receptor4 -corrected initialization of 'cleanup' on line 70 to match documentation string -improved support for preserving the input atom charge on a specified type to AD4ReceptorPreparation -fixed bug where 'charges_to_add' was not initialized in some cases... summarize_docking_directory.py -new script which reads in all the docking logs in a directory into a single Docking. It clusters the results and outputs a comma-separated list showing number of conformations, number of tors, number of atoms, number of clusters, rmstol used for clustering, energy, etc. By default uses c2-specific getRMSD_custom method (line 176) which should be commented out if not appropriate. summarize_time.py -new script which reads in all the docking logs in a directory and outputs the total amount of time taken. PMV: - New dashboard widget showing a tree representation of molecules and allowing to rapidly execute PMV commands on molecular fragments - New Grid3D commands for rendering 3D Grids. Supports adding and removing grids to Pmv. Grid a show in a table widget used for navigating between grids. Isocontours and orthogonal slices can be computed and displayed. - New Update command under the Help menu allows the user to update Pmv with the latest version of the tools. - New Register button in the About dialog allows a user to register anytime - New BugReport Command to helpCommands. This command is for submitting bugs to Bugzila DataBase from Pmv. - New command for reading and playing GROMACS trajectory files(.trr , .xtc formats) - A new check button in the GUI of the display Sticks and balls command enable licorice representation - A new cartoon outlines rendering mode is available and can be turned on through a button on the button bar. - New 3D labels allow for more fonts, arbitrary sizes, and optional billboarding - Setting the sphere quality to 0 in display CPK or Sticks And Balls no adapts the sphere quality based on the number of displayed atoms. Vision: - New node library for MatPlotLib - Added 2d texture to geometries - Network is now self executable when a user panel is defined - Visual editing for network user panels - "setmatplotlibparams" node in matpltlibNodes for setting rendering options (such as color, grid, size etc) for axes, figures etc. - Added rendering options for H
war with china? a different approach?
Coz we have fools in the govt, the downfall of the US has only been accelerated !! The are morons who staged 9/11 controlled demolition to kill americans to start their idiotic war. Date: Sat, 21 Oct 2006 16:12:20 -0500 Subject: [nsmworld] war with china? a different approach? From: "J. Knowles" <[EMAIL PROTECTED]> Greater China Apr 20, 2006 SPEAKING FREELY If it comes to a shooting war ... By Victor N Corpus Speaking Freely is an Asia Times Online feature that allows guest writers to have their say. Please click here if you are interested in contributing. One could call this article a worst-case scenario for the new American century. Why worst case? Because of the hard lessons from history. The Romans did not consider the worst-case scenario when Hannibal crossed the Alps with his elephants and routed them; or when Hannibal encircled and annihilated the numerically superior Roman army at the Battle of Cannae. The French did not consider the worst-case scenario at Dien Bien Phu and when they built the Maginot Line, and the French suffered disastrous defeats. The Americans did not consider the worst-case scenario at Pearl Harbor or on September 11, and the results were disastrous for the American people. Again, American planners did not consider the worst-case scenario in its latest war in Iraq, but instead operated on the "best-case scenario", such as considering the Iraq invasion a "cake walk" and that the Iraqi people would be parading in the streets, throwing flowers and welcoming American soldiers as "liberators", only to discover the opposite. Scenario One: America launches 'preventive war' vs China Our first objective is to prevent the re-emergence of a new rival. This is a dominant consideration underlying the new regional defense strategy and requires that we endeavor to prevent any hostile power from dominating a region whose resources would, under consolidated control, be sufficient to generate global power. These regions include Western Europe, East Asia, the territory of the former Soviet Union and Southwest Asia. -Paul Wolfowitz, former US deputy secretary of defense and currently president of the World Bank Consider these snapshots of China: Since 1978, China has averaged 9.4% annual GDP growth It had a five-fold increase in total output per capita from 1982 to 2002 It had $61 billion in foreign direct investment in 2004 alone and foreign trade of $851 billion, the third-largest in the world The US trade deficit with China exceeded $200 billion in 2005 China has $750 billion in foreign exchange reserves and is the second-biggest oil importer Last year it turned out 442,000 new engineers a year; with 48,000 graduates with master's degrees and 8,000 PhDs annually; compared to only 60,000 new engineers a year in the US. China for the first time (2004) surpassed America to export the most technology wares around the world. China enjoyed a $34 billion trade surplus with the US in advanced technology products in 2004 (The Economist, December 17, 2005). In 2005, the surplus increased to $36 billion It created 20,000 new manufacturing facilities a year It holds $252 billion in US Treasury Bonds (plus $48 billion held by Hong Kong) Among the five basic food, energy and industrial commodities -grain and meat, oil and coal and steel -consumption in China has eclipsed that of the US in all but oil. China has also gone ahead of the US in the consumption of TV sets, refrigerators and mobile phones In 1996, China had 7 million cell phones and the US had 44 million. Now China has more mobile phone users than the US has people. China has about $1 trillion in personal savings and a savings rate of close to 50%; U.S. has about $158 billion in personal savings and a savings rate of about 2% (The Wall Street Journal, Nov 19, 2005) Shanghai boasts 4,000 skyscrapers - double the number in New York City (The Wall Street Journal, Nov 19, 2005) Songbei, Harbin City in north China is building a city as big as New York City Goldman Sachs predicts that China will surpass the US economy by 2041. Before China's economy catches up with America, and before China builds a military machine that can challenge American superpower status and world dominance, America's top strategic planners (Project for the New American Century) decide to launch a "preventive war" against China. As a pretext for this, the US instigates Taiwan to declare independence. Taiwan declares independence! China has anticipated and long prepared itself for this event. After observing "Operation Summer Pulse -04" when US aircraft carrier battle groups converged in the waters off China's coast in mid-July through August of 2004, Chinese planners began preparing to face its own worst-case scenario: the possibility of confronting a total of 15 carrier battle groups composed of 12 from America and three from its close British ally. China's strategists refer to its counter-strategy to defeat 15 or more aircraft carrier battle
Re: Iterator length
Steven D'Aprano: > since g is not an arbitrary iterator, one can easily do this: > print [(h,len(list(g))) for h,g in groupby(s)] > No need for a special function. If you look at my first post you can see that I have shown that solution too, but it creates a list that may be long, that may use a lot of of memory, and then throws it away each time. I think that's a bad solution. It goes against the phylosophy of iterators too, they are things created to avoid managing true lists of items too. > If you, the iterator > creator, know enough about the iterator to be sure it has a predictable > length, you know how to calculate it. I don't agree, sometimes I know I have a finite iterator, but I may ignore how many elements it gives (and sometimes they may be a lot). See the simple example with the groupby. Bye, bearophile -- http://mail.python.org/mailman/listinfo/python-list
Re: spidering script
4 easy steps to get the links:
1. Download BeautifulSoup and import it in your script file.
2. Use urllib2 to download the html of the url.
3. mash the html using BeautifulSoup
4.
[code]
for tag in BeautifulSoupisedHTML.findAll('a'):
print tag
[/code]
David Waizer a écrit :
> Hello..
>
> I'm looking for a script (perl, python, sh...)or program (such as wget)
> that will help me get a list of ALL the links on a website.
>
> For example ./magicscript.pl www.yahoo.com and outputs it to a file, it
> would be kind of like a spidering software..
>
> Any suggestions would be appreciated.
>
> David
--
http://mail.python.org/mailman/listinfo/python-list
Re: when format strings attack
Steven D'Aprano wrote:
> os.system('dir -l %s' % 'text.txt')
>
>
> Now, there is a security risk: you might set command1 yourself, and
> allow the user to set args. If command1 is an external application
> with a security hole, and the user provides arguments that trigger that
> bug, then naturally your application will inherit whatever security
> vulnerabilities the external application suffers from. No surprises there.
There are also big risks like this
filename = 'foo; rm importantfile'
cmd = 'ls %s' % filename
os.system(cmd)
oops!
--
Jeremy Sanders
http://www.jeremysanders.net/
--
http://mail.python.org/mailman/listinfo/python-list
Re: Asyncore select statement problem
At Friday 19/1/2007 14:42, JamesHoward wrote: Thank you for the responses. I have learned considerably more about how Asyncore works because of it. The problem that I see is that Asyncore's poll function does not seem to be thread safe. From what I can tell, I am calling dispatcher.close() properly and the dispatchers are removed from asyncore's global map (all except the server itself). However, it seems like the error happens when the poll function gets the file descriptors to run select on and then the thread ticks and removes them from the global map. After this the select call is made, but the file descriptors are not valid anymore. I guess I have two questions as a result. First, is this a problem that anyone else has had and second is there a fix for it? I have tried looking for Asyncore thread safe topics in Google, but without much luck. If needed I think making the poll function atomic in the asyncore module might fix this problem, but I wanted to see what other people thought first. Usually asyncore is used with only one thread - that's one of the reasons of using it btw. You can spawn other working threads, but they don't usually interact with the networking stuff directly. -- Gabriel Genellina Softlab SRL __ Preguntá. Respondé. Descubrí. Todo lo que querías saber, y lo que ni imaginabas, está en Yahoo! Respuestas (Beta). ¡Probalo ya! http://www.yahoo.com.ar/respuestas -- http://mail.python.org/mailman/listinfo/python-list
Re: when format strings attack
On Fri, 19 Jan 2007 10:43:53 -0800, John Zenger wrote:
> Perhaps it is not as severe a security risk, but pure Python programs
> can run into similar problems if they don't check user input for %
> codes.
Please don't top-post.
A: Because it messes up the order that we read things.
Q: Why?
A: Top-posting.
Q: What is the most annoying newsgroup habit?
> Example:
>
k = raw_input("Try to trick me: ")
> Try to trick me: How about %s this?
j = "User %s just entered: " + k
print j % "John"
> Traceback (most recent call last):
> File "", line 1, in ?
> print j % "John"
> TypeError: not enough arguments for format string
That's hardly the same sort of vulnerability the article was talking
about, but it is a potential bug waiting to bite.
In a serious application, you should keep user-inputted strings separate
from application strings, and never use user strings unless they've been
made safe. See Joel Spolsky's excellent article about one way of doing
that:
http://www.joelonsoftware.com/articles/Wrong.html
--
Steven.
--
http://mail.python.org/mailman/listinfo/python-list
Re: when format strings attack
At Friday 19/1/2007 15:43, John Zenger wrote:
Perhaps it is not as severe a security risk, but pure Python programs
can run into similar problems if they don't check user input for %
codes. Example:
>>> k = raw_input("Try to trick me: ")
Try to trick me: How about %s this?
>>> j = "User %s just entered: " + k
>>> print j % "John"
Traceback (most recent call last):
File "", line 1, in ?
print j % "John"
TypeError: not enough arguments for format string
That's not a problem, it's an exception. *This* is a problem:
printf("Hello, %s")
--
Gabriel Genellina
Softlab SRL
__
Preguntá. Respondé. Descubrí.
Todo lo que querías saber, y lo que ni imaginabas,
está en Yahoo! Respuestas (Beta).
¡Probalo ya!
http://www.yahoo.com.ar/respuestas
--
http://mail.python.org/mailman/listinfo/python-list
Re: More M2Crypto issues
John Nagle wrote: > Actually, at the moment I'm having an M2Crypto problem related > to a SWIG/OpenSSL conflict. Older versions of OpenSSL have an > include file that needs __i386__ defined, which is something GCC > does based on what platform you're on. SWIG uses CPP, but > doesn't set the platform defines, so the SWIG phase of the > M2Crypto build fails. I'm currently trying to get the shared > host where that build took place upgraded to a later version of > OpenSSL, but that requires a server restart, so it may take > a few days. I'm doing something that requires M2Crypto to > run on a range of machines, which turns out to be rather harder > than expected. Which version of OpenSSL is that? -- Heikki Toivonen -- http://mail.python.org/mailman/listinfo/python-list
Re: My first try using logger didn't work. Why?
At Friday 19/1/2007 15:59, [EMAIL PROTECTED] wrote:
One of the problems I was laboring under was that I did not know where
to go to find the official documentation. Thanks for that link too!
You already have it installed; look into your python install
directory, under "doc"
From inside the interpreter, you can use help():
py> import logging.handlers
py> help(logging.handlers.NTEventLogHandler)
Help on class NTEventLogHandler in module logging.handlers:
class NTEventLogHandler(logging.Handler)
| A handler class which sends events to the NT Event Log. Adds a
| registry entry for the specified application name. If no dllname is
| provided, win32service.pyd (which contains some basic message [...]
Try help("logging"), help("modules logging"), help(any object), help("if")
And you can read the documentation online at http://www.python.org/doc/
--
Gabriel Genellina
Softlab SRL
__
Preguntá. Respondé. Descubrí.
Todo lo que querías saber, y lo que ni imaginabas,
está en Yahoo! Respuestas (Beta).
¡Probalo ya!
http://www.yahoo.com.ar/respuestas
--
http://mail.python.org/mailman/listinfo/python-list
Re: More M2Crypto issues
John Nagle wrote: > I've been running M2Crypto successfully using Python 2.4 on Windows 2000, > and now I'm trying to get it to work on Python 2.3.4 on Linux. > > Attempting to initialize a context results in > > Traceback (most recent call last): [...] > map()[long(self.ctx)] = self > ValueError: invalid literal for long(): _480e1008_p_SSL_CTX This is almost certainly because of SWIG that is too old. The minimum required is SWIG 1.3.24. If you cannot upgrade SWIG, the alternative would be to play around with these values to fit your version of SWIG. I'm adding this to the FAQ. -- Heikki Toivonen -- http://mail.python.org/mailman/listinfo/python-list
CHINESE TERRORISM 911 REPLAY Re: #Worldwide outcry follows China's sucessful test of a satellite killer
GO GET THE NEOCONS TO PUT SOME DEAD CHINESE STUDENTS IN A REMOTE PILOTED PLANES FLOWN INTO THE NEW WTC OWNED BY LARRY SILVERSTEIN WITH HEFTY INSURANCE BY SOME JAPANESE COMPANIES AND THEN DECLARE A WAR ON CHINESE TERROR . LAUGHING OUT LOUD 3027 Dead wrote: > http://www.guardian.co.uk/international/story/0,,1994236,00.html > > > China hails satellite killer - and stuns its rivals in space > > > · International outcry over first such test since 1985 > · Scientists have warned of dangers of debris in orbit > > Suzanne Goldenberg in Washington > Friday January 19, 2007 > The Guardian > > China has given notice of its increasing power in space - and provoked > widespread international concern - with a successful test of an > anti-satellite weapon that could be used to knock out enemy > surveillance and communications craft. > > In the first such test since the cold war era, the White House > confirmed that China had used a medium-range ballistic missile, > launched from the ground, to destroy an ageing weather satellite more > than 500 miles into space. "We are aware of it and we are concerned, > and we made it known," the White House spokesman, Tony Snow, told > reporters. > > Article continues > The test, on January 11, was the first of its kind since 1985 when > Washington halted such exercises because of fears of damaging military > and civilian satellites with large clouds of debris. > > The test was especially troubling because it exposed the vulnerability > of America's dependence on low-orbiting satellites, which are used for > military communications, smart bombs and surveillance. In theory, last > week's exercise could give Beijing the capability to knock out such > satellites - a realisation that underlay the protests from Washington. > > Australia and Canada also voiced concerns; Britain, South Korea and > Japan were expected to follow. "The US believes China's development > and testing of such weapons is inconsistent with the spirit of > cooperation that both countries aspire to in the civil space area," > Gordon Johndroe, a White House spokesman, said. "We and other > countries have expressed our concern regarding this action to the > Chinese." > > Scientists have long warned of the dangers of space debris - which can > remain in orbit for many hundreds of years - on existing space > programmes. Among the items lost in space are lens caps, tools and > nuts and bolts. Some former Soviet satellites leak fuel which > solidifies into balls up to 3cm in diameter. Tiny pieces, including > flecks of paint from eroding satellites, can travel at 17,000mph, and > gain enough momentum to damage a medium-sized spacecraft. > > Despite yesterday's protests, the Bush administration has opposed a > global ban on such tests, arguing that America needs to reserve its > freedom of action in space. Arms control experts said it was not > immediately clear whether the Chinese test was a ploy to try to press > the Bush administration into a global weapons treaty, or whether China > was asserting its own interests in space. > > News of the test, first reported by the magazine Aviation Week and > Space Technology, comes months after the Bush administration unveiled > a doctrine asserting America's right to take action against any > perceived threat in space. The missile relied on the force of impact > rather than an exploding warhead to shatter the satellite. > > Estimates said the destroyed Chinese satellite could have shattered > into tens of thousands of fragments that would remain in orbit for > more than a decade. > > The magazine said on its website: "Details emerging from space sources > indicate that the Chinese Feng Yun 1C (FY-1C) polar orbit weather > satellite launched in 1999 was attacked by an asat (anti-satellite) > system launched from or near the Xichang space centre." > > Last August, Mr Bush laid out an even more robust vision of America's > role in space, asserting Washington's right to deny access to any > adversary hostile to US interests, and some arms control experts have > accused the administration of conducting secret research on laser > weapons to disable and destroy enemy satellites. > > In public, Mr Bush has sought to revive the national interest in space > by calling for Americans to return to the moon in 15 years, and even > use bases there as a launchpad for Mars. However, almost all of those > costly military space programmes are over budget and behind schedule. > > > -- > "Now, by the way, any time you hear the United States government > talking > about wiretap, it requires -- a wiretap requires a court order. > Nothing has > changed, by the way. When we're talking about chasing down terrorists, > we're > talking about getting a court order before we do so" > -George W. Bush, April 20, 2004 > > Not dead, in jail, or a slave? Thank a liberal! > Pay your taxes so the rich don't have to. > > http://www.zeppscommentaries.com > For news feed, http://yahoogroups/subscribe/zepps_news >
Re: My first try using logger didn't work. Why?
Vinay (or anybody else), Well, now that logging is working, how do I stop it from working? I'm developing in PythonWin. When I run my test script, I get one message. When I run it a second time, I get two, a third time gets me three, and so on. I feel like the Sorceror's Apprentice! Rob -- http://mail.python.org/mailman/listinfo/python-list
Re: when format strings attack
On Fri, 19 Jan 2007 03:51:08 -0800, [EMAIL PROTECTED] wrote:
> http://www.ddj.com/184405774;jsessionid=BDDEMUGJOPXUMQSNDLQCKHSCJUNN2JVN
>
> I saw a warning from homeland security about this. I only comment on
> the because I am trying to use os.system('command1 arg') and it doesn't
> work
What do you mean, doesn't work? It works fine for me, precisely as
expected. What does it do for you? Crash Windows? Crash Python? Raise an
exception? Return an unexpected result?
> but I do see examples with % that is borrowed from the c language.
The "When Format Strings Attack" article isn't relevant to Python. Unlike
C, Python doesn't arbitrary dump bytes from the stack into a string if you
print a string containing %s. In Python, print just prints strings, it
doesn't do any string formatting. String formatting is done by the %
operator, so print "a string containing %s" is safe.
You'd be better off looking at Python examples than C. This is what I'm
guessing you're doing:
>>> command1 = 'dir'
>>> args = '-l text.txt'
>>> os.system('command1 arg')
sh: command1: command not found
32512
os.system doesn't do name-lookups of the string you pass to it. The right
way to do this is some variation on this:
>>> commandline = "%s %s" % (command1, args)
>>> commandline
'dir -l text.txt'
>>> os.system(commandline)
-rw-rw-r-- 1 steve steve 333 Sep 24 16:51 text.txt
0
or even something like this:
os.system('dir -l %s' % 'text.txt')
Now, there is a security risk: you might set command1 yourself, and
allow the user to set args. If command1 is an external application
with a security hole, and the user provides arguments that trigger that
bug, then naturally your application will inherit whatever security
vulnerabilities the external application suffers from. No surprises there.
--
Steven.
--
http://mail.python.org/mailman/listinfo/python-list
Re: My first try using logger didn't work. Why?
Beautiful! Thank you very much! One of the problems I was laboring under was that I did not know where to go to find the official documentation. Thanks for that link too! Rob -- http://mail.python.org/mailman/listinfo/python-list
Re: when format strings attack
Perhaps it is not as severe a security risk, but pure Python programs
can run into similar problems if they don't check user input for %
codes. Example:
>>> k = raw_input("Try to trick me: ")
Try to trick me: How about %s this?
>>> j = "User %s just entered: " + k
>>> print j % "John"
Traceback (most recent call last):
File "", line 1, in ?
print j % "John"
TypeError: not enough arguments for format string
On Jan 19, 10:44 am, "Gabriel Genellina" <[EMAIL PROTECTED]> wrote:
> <[EMAIL PROTECTED]> escribió en el mensajenews:[EMAIL PROTECTED]
>
> >http://www.ddj.com/184405774;jsessionid=BDDEMUGJOPXUMQSNDLQCKHSCJUNN2JVN
>
> > I saw a warning from homeland security about this. I only comment on
> > the because I am trying to use os.system('command1 arg') and it doesn't
> > work but I do see examples with % that is borrowed from the c language.
> > Seems like if I can write a batch file that does something the same
> > behavior should happen in the os module..Pure Python programs are not
> > affected, but a review of the C implementation
> should be made to see if any (variant of) printf is used without a proper
> format. Anyway I doubt you could find something, because the vulnerability
> is so well known for ages.
>
> --
> Gabriel Genellina
--
http://mail.python.org/mailman/listinfo/python-list
monitor the start and end of applications
Hello, My purpose is to supervise (from a python program) the launch of some other programs (python or non python programs) as : "I click on the button X and the pg X is launched ..." I want also that my supervision be "wake up" when a pg has exited to check its status or something like that. I suppose I need to use thread and I did, I'm trying several solutions (popen, os.system, commands.getstatusoutput, certainly not correctly) : generally I am able to launch a pg but when it is ended, the thread "caller" is still waiting. Is somebody has encountered similar requirements ? Thanks a lot for your help -- http://mail.python.org/mailman/listinfo/python-list
Re: More M2Crypto issues
Gabriel Genellina wrote:
> At Thursday 18/1/2007 04:41, John Nagle wrote:
> On a previous version of M2Crypto that line said: map()[self.ctx] =
> self, and that failed too ("unhashable object", I think).
> I changed the class _ctxmap (the map() above returns an instance of it)
> to use str(key) in the 3 places it was used. (That would be equivalent
> to use str(self.ctx) everywhere, instead of long(self.ctx) as your
> traceback is showing). All I can say is that no error happened
> afterwards, but I don't know if that broke something.
>
>
> So using str() appears, at least on the surface, to be reasonable. But
> someone with more intimate knowledge of the library should confirm that.
> I don't even understand what's the point for the _ctxmap singleton -
> it's the same thing as a global dictionary, isn't it?
I played around with using "str" too, but I was worried about
Python and SWIG version issues. I'm not sure you can use "str"
on those objects on all versions and platforms. I think that
SWIG is generating the implementations of __str__ and __long__.
Incidentally, note in that area that if you never explicitly
call "close" on a Context, it will never be released. Or so
it looks from the code.
Actually, at the moment I'm having an M2Crypto problem related
to a SWIG/OpenSSL conflict. Older versions of OpenSSL have an
include file that needs __i386__ defined, which is something GCC
does based on what platform you're on. SWIG uses CPP, but
doesn't set the platform defines, so the SWIG phase of the
M2Crypto build fails. I'm currently trying to get the shared
host where that build took place upgraded to a later version of
OpenSSL, but that requires a server restart, so it may take
a few days. I'm doing something that requires M2Crypto to
run on a range of machines, which turns out to be rather harder
than expected.
All this stuff is in the area that Guido was unhappy about
in his "M2Crypto Woes" article.
http://www.artima.com/weblogs/viewpost.jsp?thread=95863
The worst problems there have been fixed, but we're not out
of the woods yet. As Guido wrote, using SWIG does complicate
things.
I'm currently getting good results on Windows 2000 with
Python 2.4 using M2Crypto 0.17; right now, the problems are
on the Linux side.
John Nagle
--
http://mail.python.org/mailman/listinfo/python-list
Re: confused on python rpc with apache, is it possible?
krishnakant Mane wrote: > hello all. > I will like to know if the following combination is possible. > I have looked around on google and did not find any thing productive > so bothering the list: sorry. > I am developing a distributed application which will have 3 layers > namely the thin client written in wxpython, an application layer on a > server and a database server of course. database and application > server will be on same physical machine. > what I want to know is if I can use python as the base for developing > the application layer as an rpc server and use apache server to > handle http remote procedure requests from the client? > if yes then what basic configuration settings I will need? > I believe I must first have apache recognise python interpreter and > then do some settings in apache so that it knows that what is > happening is not a web page request but an xml-rpc application created > in python. > can some one guide me? I'm unclear why you want the apache in there in the first place. Why don't you just create an e.g. twisted-based XMLRPC-server, and simply let that run? What is the apache intended for? Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: Asyncore select statement problem
Thank you for the responses. I have learned considerably more about how Asyncore works because of it. The problem that I see is that Asyncore's poll function does not seem to be thread safe. From what I can tell, I am calling dispatcher.close() properly and the dispatchers are removed from asyncore's global map (all except the server itself). However, it seems like the error happens when the poll function gets the file descriptors to run select on and then the thread ticks and removes them from the global map. After this the select call is made, but the file descriptors are not valid anymore. I guess I have two questions as a result. First, is this a problem that anyone else has had and second is there a fix for it? I have tried looking for Asyncore thread safe topics in Google, but without much luck. If needed I think making the poll function atomic in the asyncore module might fix this problem, but I wanted to see what other people thought first. Thanks again for the help, Jim Howard Gabriel Genellina wrote: > "JamesHoward" <[EMAIL PROTECTED]> escribió en el mensaje > news:[EMAIL PROTECTED] > > >I have a problem with python's asyncore module throwing a bad file > > descriptor error. The code might be difficult to copy here, but the > > problem is essentially: > > > > The server wants to sever the connection of an open Asyncore socket. > > Calling the socket.close() nor the socket.shutdown(2) calls seem to > > work. The only way I can close the connection without creating the > > error below is to have the client close the connection. > > You have to use the dispatcher's close() method, else, the asyncore map > won't be updated, keeping a reference to the closed socket. > > -- > Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
Re: Why do I have to call del explicitly for com objects?
Gabriel Genellina skrev: > <[EMAIL PROTECTED]> escribió en el mensaje > news:[EMAIL PROTECTED] > > > I'm creating objects in my python script belonging to a COM object > > which I dispatch using win32com.client.DispatchEx. Hence, dllhost.dll > > is the concerned process. The problem is that the objects destructor > > within the com object is not called if the object lives past a certain > > number of seconds. For example, this function will not call the > > destructor concerned with obj unless the sleep is commented out. > > > > def fnction: > > obj = comobj.createACertainObject() > > obj.doStuff() > > sleep(10) > > obj.doMoreStuff() > > #del obj > > I don't understand the case. > del does not invoke a destructor, just decrements the object's reference > count. When the rc reaches zero, the object is a candidate for GC. That is, > "some time in the future", the GC would destroy it (unless it's part of a > circular reference chain...) > So, *inside* your function, there is a reference held by the local variable > obj. It is decremented automatically when you exit the function (and obj > gets out of scope) or if you explicitely use del. > You can use sys.getrefcount() to see how many references an object has. (The > output is +1 because getrefcount() has a temporary reference to the object > too). > > py> x="Hello World" > py> sys.getrefcount(x) > 2 > > See how many references your obj have. After calling doStuff or doMoreStuff, > you can have more references if those functions store `self` somewhere, or > pass it to another method that does so. > > > It seems to me that the GC forgets about obj after a certain amount of > > time. I can force the destructor to be called using del obj at the end > > of my function, but why do I have to call this explicitly? > If del obj works at the end, exiting the function should work too. Both ways > you decrement the rc. There is something *more* in here. > > -- > Gabriel Genellina Thanks for the reply. I tried using a longer sleep before the del but the destructor wasn't called this time. I guess del is not the issue here what so ever. As far as I can see, the garbage collector forgets about my object after a certain period of time. The fix i'm using now is to use Destruct functions in my CoM object which I call explicitly. def fnction: obj = comobj.createACertainObject() obj.doStuff() sleep(10) obj.doMoreStuff() obj.Destruct() I'd still love to know what the issue is here. Thanks, Barry. -- http://mail.python.org/mailman/listinfo/python-list
confused on python rpc with apache, is it possible?
hello all. I will like to know if the following combination is possible. I have looked around on google and did not find any thing productive so bothering the list: sorry. I am developing a distributed application which will have 3 layers namely the thin client written in wxpython, an application layer on a server and a database server of course. database and application server will be on same physical machine. what I want to know is if I can use python as the base for developing the application layer as an rpc server and use apache server to handle http remote procedure requests from the client? if yes then what basic configuration settings I will need? I believe I must first have apache recognise python interpreter and then do some settings in apache so that it knows that what is happening is not a web page request but an xml-rpc application created in python. can some one guide me? thanks Krishnakant. -- http://mail.python.org/mailman/listinfo/python-list
Re: Is it possible to fasten the import of cgi?
Gabriel Genellina wrote: > I'll try to explain better: the cgi *protocol* (I'm not talking about the > cgi *module*) requires a *new* python process to be created on *each* > request. Try to measure the time it takes to launch Python, that is, the > time from when you type `python ENTER` on your shell and the interpreter > prompt appears. That time is wasted for *every* cgi request, and I bet it > is much greater than the 95 ms you measure importing a module (be it cgi > or whatever). You'll gain much more responsiveness if you can switch to > another protocol, be it FastCGI, WSGI, mod_python or another. The import of the cgi module takes about 95 milliseconds and the browsers takes around 260 milliseconds to fetch the xml-page. This is why I thought it to be important, but I think you are right, I should not worry about this and switch to another protocol. Is not possible with the current hosting provider, but I'll switch. Pointers where to look for in selecting the protocol are apreciated. > Anyway, comparing the import time between os, sys, and cgi is not very > meaningful. sys is a builtin module, so "import sys" does very little. os > is likely to be already imported by the time your script begins, so > "import os" just verifies that os is already in sys.modules. "import cgi" > is the only example when Python actually has to load something, so it's > not a surprise if it takes longer. Okay, thank you for the explanation. -- http://mail.python.org/mailman/listinfo/python-list
Re: Is it possible to fasten the import of cgi?
Tim Roberts wrote: > Cecil Westerhof <[EMAIL PROTECTED]> wrote: >> >>I have a cgi-script dat uses the modules cgi, os, sys and time. Offcourse >>I can not time the time used to import time, but os and sys do not take >>more as a millisecond. My script itself takes 3 or 4 milliseconds. But >>importing cgi takes 95 milliseconds. (This is on my test system a PII 300 >>MHz. Is there a way to make this more fast? The import off cgi makes the >>script at least 20 times as slow. Something like mod-python is not a >>possibility. I could use it on my test machine, but not at the osting >>provider. > > Realistically, do you plan to support more than a few dozen requests per > minute? If not, then it doesn't matter at all. The script launch > overhead is an insignificant part of the user's browser experience. Not at the moment. The application is in alpha, so it is mostly a few testers. At the moment it is going life I want to have another provider. So I have a little time to search for another provider and select 'the best' framework. ;-} -- http://mail.python.org/mailman/listinfo/python-list
Re: Is it possible to fasten the import of cgi?
BJörn Lindqvist wrote: > On 1/18/07, Cecil Westerhof <[EMAIL PROTECTED]> wrote: >> I have a cgi-script dat uses the modules cgi, os, sys and time. Offcourse >> I can not time the time used to import time, but os and sys do not take >> more as a millisecond. My script itself takes 3 or 4 milliseconds. But >> importing cgi takes 95 milliseconds. (This is on my test system a PII 300 >> MHz. Is there a way to make this more fast? The import off cgi makes the >> script at least 20 times as slow. Something like mod-python is not a >> possibility. I could use it on my test machine, but not at the osting >> provider. > > Maybe python-launcher-daemon can help you? > http://blogs.gnome.org/view/johan/2007/01/18/0 But if you can not use > mod_python then you probably can not use any long running processes > either. By my current provider I can not use this. But I am going to look for another. What are the pro's en cons off the different systems? FastCGI, PyApache, mod_pythion and maybe others I am not aware off. -- http://mail.python.org/mailman/listinfo/python-list
Re: nsis and command-line argument
manouchk wrote: > Hi, > > is there a standart way to prepare a single exe with nsis that pass the > command line to an exe created by py2exe on windows? > > py2exe allows to prepare an exe that get the command-line but needs > some lib file so that it is not so elegant to ditribute. I tried a > simple setup.nsis script to prepare a single file exe with works fine > except that it does get the command-line. > > Is there a way do get the command line with the setup.nsis script? > or any other simple method ? Answering myself, well with NSIS it is not supported as written there : http://www.py2exe.org/index.cgi/SingleFileExecutable I'm looking for the py2exe option that allows that, I guess it could be --bundle 1. It does not seem to be documented but I will try that. -- http://mail.python.org/mailman/listinfo/python-list
Re: Match 2 words in a line of file
On 18 Jan 2007 18:54:59 -0800, "Rickard Lindberg" <[EMAIL PROTECTED]> wrote: >I see two potential problems with the non regex solutions. > >1) Consider a line: "foo (bar)". When you split it you will only get >two strings, as split by default only splits the string on white space >characters. Thus "'bar' in words" will return false, even though bar is >a word in that line. > >2) If you have a line something like this: "foobar hello" then "'foo' >in line" will return true, even though foo is not a word (it is part of >a word). 1) Depends how you define a 'word'. 2) This can be resolved with templine = ' ' + line + ' ' if ' ' + word1 + ' ' in templine and ' ' + word2 + ' ' in templine: Dan -- http://mail.python.org/mailman/listinfo/python-list
Re: when format strings attack
"Nick Maclaren" <[EMAIL PROTECTED]> escribió en el mensaje news:[EMAIL PROTECTED] > In article <[EMAIL PROTECTED]>, > "Gabriel Genellina" <[EMAIL PROTECTED]> writes: > |> > |> Pure Python programs are not affected, but a review of the C > implementation > |> should be made to see if any (variant of) printf is used without a > proper > |> format. Anyway I doubt you could find something, because the > vulnerability > |> is so well known for ages. > > Not really. There are LOTS of vulnerabilities that have been known > for ages and are still legion. The reason that this is unlikely is > that it is both easy to spot and trivial to fix. Yes... Anyway, unless someone actually *do* revise the code, if it's easy or not has no importance. I think that some automated tools were used to find problems, but I don't know if this specific vulnerability was searched. -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
Re: PQueue and Python 2.5
"Berteun Damman" <[EMAIL PROTECTED]> escribió en el mensaje news:[EMAIL PROTECTED] > Recently I was looking for a Priority Queue module, and I've found > Pqueue by Andrew Snare [1]. That appears to be rather ancient, from 1999. Is it a pure Python implementation or has some C code too? Python got in 2.3 a heapq module in its standard library; I think it is what you want, no need for an additional module. > *** glibc detected *** free(): invalid pointer: 0x2ad7b5720288 *** > Abort > > And on my PowerBook: > python2.5(8124) malloc: *** Deallocation of a pointer not malloced: > 0x3b4218; This could be a double free(), or free() called with the > middle of an allocated block; > > A memory fault can also be immediately triggered by apply 'del' to a > PQueue-instance. As said, with Python 2.4 it seems to perform without > problems. Ah! then I bet: - There is some C code involved. - It carelessly mixes PyMem_Malloc with PyObject_Free or similar as described in http://docs.python.org/whatsnew/ports.html So do yourself a favor and forget about such old piece of code... -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
Re: Why do I have to call del explicitly for com objects?
<[EMAIL PROTECTED]> escribió en el mensaje news:[EMAIL PROTECTED] > I'm creating objects in my python script belonging to a COM object > which I dispatch using win32com.client.DispatchEx. Hence, dllhost.dll > is the concerned process. The problem is that the objects destructor > within the com object is not called if the object lives past a certain > number of seconds. For example, this function will not call the > destructor concerned with obj unless the sleep is commented out. > > def fnction: > obj = comobj.createACertainObject() > obj.doStuff() > sleep(10) > obj.doMoreStuff() > #del obj I don't understand the case. del does not invoke a destructor, just decrements the object's reference count. When the rc reaches zero, the object is a candidate for GC. That is, "some time in the future", the GC would destroy it (unless it's part of a circular reference chain...) So, *inside* your function, there is a reference held by the local variable obj. It is decremented automatically when you exit the function (and obj gets out of scope) or if you explicitely use del. You can use sys.getrefcount() to see how many references an object has. (The output is +1 because getrefcount() has a temporary reference to the object too). py> x="Hello World" py> sys.getrefcount(x) 2 See how many references your obj have. After calling doStuff or doMoreStuff, you can have more references if those functions store `self` somewhere, or pass it to another method that does so. > It seems to me that the GC forgets about obj after a certain amount of > time. I can force the destructor to be called using del obj at the end > of my function, but why do I have to call this explicitly? If del obj works at the end, exiting the function should work too. Both ways you decrement the rc. There is something *more* in here. -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
Re: My first try using logger didn't work. Why?
[EMAIL PROTECTED] wrote:
> Greetings!
>
> I want to write messages into the Windows event log. I found
> sevicemanager, but the source is always "Python Service", and I'd like
> to be a bit more descriptive. Poking around on the Internet revealed
> the existence of the logging module. It seems to have easily
> understood methods with the power I need. So I tried it. Here's my
> attempt:
>
> logger = logging.getLogger("TahChung Part 1")
> logger.setLevel(logging.INFO)
> eventHandler = logging.NTEventLogHandler()
> eventHandler.setlevel(logging.INFO)
> formatter = logging.Formatter("%(message)s")
> eventHandler.setFormatter(formatter)
>
> logger.addHandler(eventHandler)
> logger.error("This comes from the logger object.")
>
> I get no error messages from this, but I also don't get anything in my
> event log. What am I doing wrong?
>
> By the way, my source of instructions for how to do this was:
> http://www.onlamp.com/pub/a/python/2005/06/02/logging.html
>
> Rob Richardson
> RAD-CON, Inc.
Well Rob,
Your first try didn't work because (based on your posted snippet) it
contained some errors.
The OnLAMP article was nice, but it's always best to go the the actual
documentation:
http://docs.python.org/lib/module-logging.html
Where you will see that NTEventLogHandler (described on page
http://docs.python.org/lib/node418.html) requires an initialiser
argument. Also, "setlevel" is misspelt - it should be "setLevel". The
following slightly modified version of your script puts an entry in the
NT Event Log on my machine:
import logging, logging.handlers
logger = logging.getLogger("TahChung Part 1")
logger.setLevel(logging.INFO)
eventHandler = logging.handlers.NTEventLogHandler("TahChung")
eventHandler.setLevel(logging.INFO)
formatter = logging.Formatter("%(message)s")
eventHandler.setFormatter(formatter)
logger.addHandler(eventHandler)
logger.error("This comes from the logger object.")
Best regards,
Vinay Sajip
--
http://mail.python.org/mailman/listinfo/python-list
Re: when format strings attack
In article <[EMAIL PROTECTED]>,
"Gabriel Genellina" <[EMAIL PROTECTED]> writes:
|> <[EMAIL PROTECTED]> escribió en el mensaje
|> news:[EMAIL PROTECTED]
|>
|> > http://www.ddj.com/184405774;jsessionid=BDDEMUGJOPXUMQSNDLQCKHSCJUNN2JVN
|> >
|> > I saw a warning from homeland security about this. I only comment on
|> > the because I am trying to use os.system('command1 arg') and it doesn't
|> > work but I do see examples with % that is borrowed from the c language.
|> > Seems like if I can write a batch file that does something the same
|> > behavior should happen in the os module..
|>
|> Pure Python programs are not affected, but a review of the C implementation
|> should be made to see if any (variant of) printf is used without a proper
|> format. Anyway I doubt you could find something, because the vulnerability
|> is so well known for ages.
Not really. There are LOTS of vulnerabilities that have been known
for ages and are still legion. The reason that this is unlikely is
that it is both easy to spot and trivial to fix.
Regards,
Nick Maclaren.
--
http://mail.python.org/mailman/listinfo/python-list
Re: Iterator length
On Fri, 19 Jan 2007 05:04:01 -0800, bearophileHUGS wrote: > Steven D'Aprano: >> > s = "aaabaabb" >> > from itertools import groupby >> > print [(h,leniter(g)) for h,g in groupby(s)] >> >> s isn't an iterator. It's a sequence, a string, and an iterable, but not >> an iterator. > > If you look better you can see that I use the leniter() on g, not on s. > g is the iterator I need to compute the len of. Oops, yes you're right. But since g is not an arbitrary iterator, one can easily do this: print [(h,len(list(g))) for h,g in groupby(s)] No need for a special function. >> I hope you know what sequences and strings are :-) > > Well, I know little still about the C implementation of CPython > iterators :-) > > But I agree with the successive things you say, iterators may be very > general things, and there are too many drawbacks/dangers, so it's > better to keep leniter() as a function separated from len(), with > specialized use. I don't think it's better to have leniter() at all. If you, the iterator creator, know enough about the iterator to be sure it has a predictable length, you know how to calculate it. Otherwise, iterators in general don't have a predictable length even in principle. -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
[ann] Appscript Installer 1.5 released
Announcing the release of Appscript Installer 1.5, containing all the latest appscript-related modules, documentation and tools: http://appscript.sourceforge.net/download.html Appscript enhances the Python scripting language (http://www.python.org) with robust, easy-to-use OS X application scripting support, making Python a serious alternative to AppleScript for automating your Mac. This release contains several significant API changes, along with various bugfixes and other internal improvements, and is recommended for all users. In addition, the bundled osadict command line tool has been overhauled to create a powerful interactive dictionary browser and HTML exporter with support for py-appscript, rb-appscript and AppleScript formatting styles. (Existing appscript users: please read the 'API CHANGES' file included with the appscript package before upgrading from older versions.) For Python 2.3+ on Mac OS X 10.3 and later. Enjoy, has -- http://appscript.sourceforge.net http://rb-appscript.rubyforge.org -- http://mail.python.org/mailman/listinfo/python-list
My first try using logger didn't work. Why?
Greetings!
I want to write messages into the Windows event log. I found
sevicemanager, but the source is always "Python Service", and I'd like
to be a bit more descriptive. Poking around on the Internet revealed
the existence of the logging module. It seems to have easily
understood methods with the power I need. So I tried it. Here's my
attempt:
logger = logging.getLogger("TahChung Part 1")
logger.setLevel(logging.INFO)
eventHandler = logging.NTEventLogHandler()
eventHandler.setlevel(logging.INFO)
formatter = logging.Formatter("%(message)s")
eventHandler.setFormatter(formatter)
logger.addHandler(eventHandler)
logger.error("This comes from the logger object.")
I get no error messages from this, but I also don't get anything in my
event log. What am I doing wrong?
By the way, my source of instructions for how to do this was:
http://www.onlamp.com/pub/a/python/2005/06/02/logging.html
Rob Richardson
RAD-CON, Inc.
--
http://mail.python.org/mailman/listinfo/python-list
Re: when format strings attack
<[EMAIL PROTECTED]> escribió en el mensaje
news:[EMAIL PROTECTED]
> http://www.ddj.com/184405774;jsessionid=BDDEMUGJOPXUMQSNDLQCKHSCJUNN2JVN
>
> I saw a warning from homeland security about this. I only comment on
> the because I am trying to use os.system('command1 arg') and it doesn't
> work but I do see examples with % that is borrowed from the c language.
> Seems like if I can write a batch file that does something the same
> behavior should happen in the os module..
Pure Python programs are not affected, but a review of the C implementation
should be made to see if any (variant of) printf is used without a proper
format. Anyway I doubt you could find something, because the vulnerability
is so well known for ages.
--
Gabriel Genellina
--
http://mail.python.org/mailman/listinfo/python-list
Re: PyMeld for html templates?
Sean Schertell wrote: > > Of course I'm going to try them all but I wonder if anyone has any > thoughts on PyMeld as a template system for churning out general > websites? > meld3 evolved from pymeld. I use meld3 - http://plope.com/software/meld3/ this whole style of templating is known as push-style (coined by Terence Parr). Most systems are pull-style. > sorted. But how about PyMeld, any ideas on how to do it or whether it > will even work as I've described? > the meat and bread problem: each page has meat and you want to wrap it with some standard bread. it's a basic tree rewrite and since meld3 uses ElementTree underneath, it is a piece of cake. -- http://mail.python.org/mailman/listinfo/python-list
Re: Why this script can work?
"Jm lists" <[EMAIL PROTECTED]> escribió en el mensaje news:[EMAIL PROTECTED] > I'm not habitual for this usage of 'else',other languages seem don't > support this syntax. > i.g,writting the codes below by Perl would get an error: > > [[[censored example]]] If all languages had the same features, what would be the point of having different languages at all? -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
Re: Wierd M2Crypto bug - phony "peer did not return certificate" error
On Fri, 12 Jan 2007 05:54:42 GMT, John Nagle <[EMAIL PROTECTED]> wrote: >Heikki Toivonen wrote: >> [EMAIL PROTECTED] wrote: >> >>> That's a problem for me. I need short timeouts; I'm accessing sites >>>that might or might not have SSL support, and I need to quickly time >>>out when there's no SSL server. >> >> >> You should be able to do short timeouts, just not using the global >> setdefaulttimeout. Have you tried Connection.set_socket_read/write_timeout? > > Yes. That does not affect the connect timeout; it's only effective once >the connection has been opened. And adjusting the session timeout >just recreates the blocking/non blocking problem. > > Incidentally, "get_socket_read_timeout()" doesn't work. Generates >"EXCEPTION at socket level: unpack str size does not match format", >every time, at least with Python 2.4 on Windows. The lower level >function returns one number as a string, like "7200", and the unpack >function tries to unpack it as "ll", which fails. > >> Also like I mentioned before, if you use the Twisted wrapper and let >> Twisted handle network stuff you should be fine. > > That would mean struggling with Twisted and dealing with its bugs. >(For example, has the MySQLdb mess been resolved for Twisted's API?) http://twistedmatrix.com/trac/search?q=MySQLdb&noquickjump=1&ticket=on I'd say so, unless you're referring to a bug you never reported (we only fix those at about half the rate of reported bugs). Jean-Paul -- http://mail.python.org/mailman/listinfo/python-list
Re: How can I create a linked list in Python?
"Jorgen Grahn" <[EMAIL PROTECTED]> wrote: > > FWIW, I oppose the idea (paraphrased from further up the thread) that linked > lists and other data structures are obsolete and dying concepts, obsoleted > by Python and other modern languages. > > 99% of the time. a Python list is the right tool for the job, but that's > only because we have CPU cycles to spare and the 'n' in our 'O(n)' is > limited. You cannot call yourself a computer scientist without understanding > things like linked lists. No other data structure has the same > characteristics (good and bad) as that one. Or those two, really. +1 The concept of storing a pointer that points to the "next thing" is so basic that it will never go away. One meets it all time in chained buffer blocks, in tag sorts, etc... And if you add a pointer to the "previous thing" too, then adding or taking something out of what could become a ring is a constant effort. Until you run out of memory. Ye Olde Universal Controlle Blocke: - pointer to the start of data block - length of allocated data block - pointer to next control block - pointer to previous control block - next in pointer into data block - next out pointer into data block - optional length of data - optional here starts or ends the lesson indicator errrm... thats about it, unless you want a fast index too: - pointer to first control block - pointer to second control block - pointer to third control block ... Isn't it nice of python to hide all this stuff? - Hendrik -- http://mail.python.org/mailman/listinfo/python-list
Re: Would a Dutch speaker please check this wiki page please?
"Martin P. Hellwig" <[EMAIL PROTECTED]> wrote: > Stef Mientki wrote: > > [EMAIL PROTECTED] wrote: > >> Got a note about a new page on the Python Wiki: > >> > >>> "Wade" == Wade McDaniel <[EMAIL PROTECTED]> writes: > >> > >> http://wiki.python.org/moin/Selcuk_Altun > >> > >> I suspect it's junk since it doesn't seem to mention Python and the > >> website > >> it mentions doesn't seem to exist. Still, just in case... > > The only (incorrect) Dutch sentence on the whole site is: > > "Welkom op me site www.keriwar.nl", > > which should have been > > "Welkom op mijn site www.keriwar.nl" > > but that could be explained, while his name "Selcuk Altun" is not > > orginated from the Netherlands. > > I just expect that he is trying to setup a wiki, > > but that's too soon to give it a judgement. > > > > cheers, > > Stef Mientki > >> > >> Thx, > >> > >> Skip > > Could be Afrikaans too, but the page is gone now so I can't check. No its not Afrikaans - the "me" would have had to be "my" and "site" would have been "webwerf" - literally "web yard"... Some Flemish dialect, perhaps? - Hendrik -- http://mail.python.org/mailman/listinfo/python-list
PQueue and Python 2.5
Hello, Recently I was looking for a Priority Queue module, and I've found Pqueue by Andrew Snare [1]. When I use it with Python 2.4 everything works okay, at least on the two system I've tested it on (Debian based AMD 64) and OS PPC. However, when I use it with Python 2.5 - again on the same machines, exiting always gives a pointer error. The easiest to demonstrate this is: python2.5 -c 'from pqueue import PQueue; PQueue()' On the Debian system: $ python2.5 -c 'from pqueue import PQueue; PQueue()' *** glibc detected *** free(): invalid pointer: 0x2ad7b5720288 *** Abort And on my PowerBook: python2.5(8124) malloc: *** Deallocation of a pointer not malloced: 0x3b4218; This could be a double free(), or free() called with the middle of an allocated block; A memory fault can also be immediately triggered by apply 'del' to a PQueue-instance. As said, with Python 2.4 it seems to perform without problems. I haven't got a clue how to investigate this, but I would be willing to help if someone has any ideas. Berteun [1] http://py.vaults.ca/apyllo.py/514463245.769244789.44776582 -- http://mail.python.org/mailman/listinfo/python-list
Re: Login Form
Ghirai wrote: > Hello python-list, > > I need to make a login form, if possible without cookies. > Can anyone point me in the right direction? Or are there any > examples? > > Thanks. > > -- > Best regards, > Ghirai. You'd do pretty good using the 'cgi' module, which is documented at http://www.python.org/doc/lib/module-cgi.html A quick web search found an example site for the cgi module: http://www.cs.virginia.edu/~lab2q/lesson_7/ Don't be afraid to search for good examples on the web, adapt them, and try them out on your own box. --Kevin -- http://mail.python.org/mailman/listinfo/python-list
Re: how to mimik a main() function to start a program with entry point?
Hi, >From a python module you could use subprocess and start the exe. Normally one must leave it to the OS to load a binary module, because there are certain things done during loading. Nevertheless the location of the entry point is coded in the binary file format (e.g. PE for windows or ELF for Linux) Whether it is possible from python to make an import of a python module in a python package gone through py2exe, I cannot answer. But I think you mean how to tell py2exe, where the entry point is. Read: http://www.py2exe.org/index.cgi/Tutorial Roland [EMAIL PROTECTED] schrieb am 19.01.2007 14:30:33: > hello all. > I have one simple query and may be that's to stupid to answer but I am > not finding the answer any ways. > I have a set of modules in my package and out if which one is my > actual starting point to my entire program. say for example I have an > entire database application ready and I want a main (as in java or c) > to initiate the program and may be bring up a login screen and then > pass the control on to the main window. > if I am giving raw source code that is easy because I will tell user > to run the command ./xyz.py which has that function. > but if I freze it into an executable with py2exe for example , how do > I solve this problem? > thanks. > Krishnakant. > -- > http://mail.python.org/mailman/listinfo/python-list > -- http://mail.python.org/mailman/listinfo/python-list
