ANN: Vancouver Python Workshop - keynote speakers announced
What's New? === We are pleased to announce the keynote speakers for this year's Vancouver Python Workshop: Guido van Rossum and Jim Hugunin. Guido van Rossum (Google) is the inventor of Python and has managed its growth and development for more than a decade. Guido was awarded the Free Software Foundation Award in 2002 and Dr.Dobb's 1999 Excellence in Programming Award. Today Guido works at Google, spending half of his time on Python. Jim Hugunin (Microsoft) is the creator of IronPython, Jython and Numeric Python. IronPython is Python for the .NET platform and integrates Python into Microsoft's .NET strategy. Jython is Python for the Java platform and was the second production quality implementation of Python. Numeric Python adapts Python to the needs of number crunching applications. Today, Jim works at Microsoft where he helps them adapt the .NET runtime to meet the needs of dynamic languages like Python. About the Vancouver Python Workshop === The conference will begin with keynote addresses on August 4st. Further talks (and tutorials for beginners) will take place on August 5th and 6th. The Vancouver Python Workshop is a community organized conference designed for both the beginner and for the experienced Python programmer with: * tutorials for beginning programmers * advanced lectures for Python experts * case studies of Python in action * after-hours social events * informative keynote speakers * tracks on multimedia, Web development, education and more More information see: http://www.vanpyz.org/conference/ or contact Brian Quinlan at: [EMAIL PROTECTED] Vancouver = In addition to the opportunity to learn and socialize with fellow Pythonistas, the Vancouver Python Workshop also gives visitors the opportunity to visit one of the most extraordinary cities in the world (1). For more information about traveling to Vancouver, see: http://www.vanpyz.org/conference/vancouver.html http://www.tourismvancouver.com http://en.wikipedia.org/wiki/Vancouver Important dates === Talk proposals accepted: May 15th to June 15th Early registration (discounted): May 22nd to June 30th Normal registration: from July 1st Keynotes: August 4th Conference and tutorial dates: August 5th and 6th (1) http://news.bbc.co.uk/2/hi/business/2299119.stm Cheers, Brian -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
Reminder: call for proposals Python Language and Libraries Track for Europython 2006
Registration for Europython (3-5 July) at CERN in Geneva is now open, if you feel submitting a talk proposal there's still time until the 31th of May. If you want to talk about a library you developed, or you know well and want to share your knowledge, or about how you are making the best out of Python through inventive/elegant idioms and patterns (or if you are a language guru willing to disseminate your wisdom), you can submit a proposal for the Python Language and Libraries track A track about Python the Language, all batteries included. Talks about the language, language evolution, patterns and idioms, implementations (CPython, IronPython, Jython, PyPy ...) and implementation issues belong to the track. So do talks about the standard library or interesting 3rd-party libraries (and frameworks), unless the gravitational pull of other tracks is stronger. The full call and submission links are at: http://www.europython.org/sections/tracks_and_talks/call-for-proposals Samuele Pedroni, Python Language and Libraries Track Chair -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
released: RPyC 2.60
Remote Python Call (RPyC) 2.60 has been released. changelog: * added: __version__ to the package (i.e., assert Rpyc.__version__ (2,50)) * added deliver, the counterpart of obtain() * deliver and obtain now support transfering functions * added DeliveringNamespace * added isproxy * improvements to the isinstance/issubclass mechanism * improved memory consumption with __slots__ to all objects (proxies can be plentiful, so it's better to keep them small) * fix: SecSocketConnection now raises LoginError instead of tlslite's internal errors see the release notes (on the website) for more info home: http://rpyc.wikispaces.com -tomer -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
Re: import woe
[EMAIL PROTECTED] wrote: hello, i have a problem. i would like to import python files above and below my current directory. i'm working on /home/foo/bar/jar.py i would like to import /home/foo/car.py and /home/foo/bar/far.py how can i do this? $ cat ~/.bashrc export PATH=/home/foo/:$PATH $ cat /home/foo/application #!/usr/bin/env python import bar.jar $ chmod +x /home/foo/application $ cd /home/foo/bar $ application all imports work fine ... ps: i want to scale, so i do not want to edit the python path In what sense do you want to scale, working with multiple projects or multiple versions of one project at the same time? Anyway you are to quick to jump to conclusions, if you don't want to edit python path who will do it for you? Python path won't appear out of thin air if your file layout is not supported out of the box. -- http://mail.python.org/mailman/listinfo/python-list
Re: number of different lines in a file
r.e.s. wrote: BTW, the first thing I tried was Fredrik Lundh's program: def number_distinct(fn): return len(set(s.strip() for s in open(fn))) which worked without the square brackets. Interesting that omitting them doesn't seem to matter. a for loop inside square brackets is a list comprehension, and the result is a list. if you use a list comprehension inside a function call, the full list is built *before* the function is called. in this case, this would mean that the entire file would be read into memory before the set was constructed. if you change the square brackets to ordinary parentheses, you get a generator expression instead: http://pyref.infogami.com/generator-expressions the generator expression results in an iterator object that calculates the values one by one. if you pass it to a function that expects an iterator, that function will end up running the for loop itself, and no extra storage is needed. (in this case, you still need memory to hold the set, of course, so the difference between a list comprehension and a generator expression will only matter if you have lots of duplicates). finally, a syntax shortcut lets you remove the parentheses if the generator expression is the only argument in a function call, as in the above example. /F -- http://mail.python.org/mailman/listinfo/python-list
Re: newb: comapring two strings
manstey wrote:
Is there a clever way to see if two strings of the same length vary by
only one character, and what the character is in both strings.
E.g. str1=yaqtil str2=yaqtel
they differ at str1[4] and the difference is ('i','e')
But if there was str1=yiqtol and str2=yaqtel, I am not interested.
can anyone suggest a simple way to do this?
My next problem is, I have a list of 300,000+ words and I want to find
every pair of such strings. I thought I would first sort on length of
string, but how do I iterate through the following:
Not sure if it can handle 30 words, but here is something to play with.
import sys
def find_similars(words, lookup=None, dupes=None):
if lookup is None:
lookup = {}
if dupes is None:
dupes = set()
for word in words:
low_word = word.lower()
if low_word not in dupes:
dupes.add(low_word)
last = None
for i, c in enumerate(low_word):
if c == last: continue
key = low_word[:i], low_word[i+1:]
if key in lookup:
lookup[key].append(word)
else:
lookup[key] = [word]
last = c
return (group for group in lookup.itervalues() if len(group) 1)
def main():
import optparse
parser = optparse.OptionParser()
parser.usage += infile[s]
parser.add_option(-n, --limit, type=int, help=process at most
LIMIT words)
options, args = parser.parse_args()
if args:
words = (w.strip() for fn in args for w in open(fn))
else:
words = (w.strip() for w in sys.stdin)
if options.limit is not None:
from itertools import islice
words = islice(words, max_len)
for group in find_similars(words):
print .join(sorted(group))
if __name__ == __main__:
main()
Peter
--
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Re: Which is More Efficient?
Dustan wrote: Obviously it takes a geek to know you have to time it, as opposed to any other task you could be talking about. wasn't the original question my program uses a lot of CPU, and I want to make it more efficient ? what does a lot of CPU and more efficient mean to you, and how do you know that your program uses a lot of CPU ? /F -- http://mail.python.org/mailman/listinfo/python-list
Re: import woe
Hi bob,
1. decide the directory which will be your root folder containing foo
[/home/ROOT/foo/]
2. work out your directory structure relative to this root folder
here it is -ROOT-foo-car.py
-bar-far.py
-bar-jar.py
3. add __init__.py file inside each folder containing a list variable
__all__ with contents as the name of the directories and classes
so foo folder should contain a file called __init__.py which has the
following contents
__all__ = ['bar','car']
and bar folder should contain a file called __init__.py which has the
following contents
__all__ = ['far','jar']
4. add the root folder to your sys.path
so your jar.py file should have the following entries
from sys import path
path.append('../../../ROOT')
note: i prefer relative paths or make paths using os.getcwd
combinations in such situations, which makes the class more flexible.
you can also do this step where u configure/initialize
5. then you can import the classes you want in jar.py
from foo import car
from foo.bar import far
pls mail if u dont get it working/any doubts.
-
vaibhav
--
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Getting URL's
How do I get all the URL's in a page? -- http://mail.python.org/mailman/listinfo/python-list
Re: Getting URL's
use htmlparser or regular expression -- http://mail.python.org/mailman/listinfo/python-list
Re: Tabs are *MISUNDERSTOOD*, *EVIL* AND *STUPID*, end of discussion. (Re: Tabs versus Spaces in Source Code)
On Thu, 18 May 2006 08:30:03 +, Duncan Booth wrote: PoD wrote: How many levels of indentation does 12 spaces indicate? It could be 1,2,3,4,6 or 12. If you say it's 3 then you are _implying_ that each level is represented by 4 spaces. By reading the code I can see how many levels of indentation it represents. How many levels of indentation is 3 tabs? 3 levels in any code that you will find in the wild. No. That is precisely the problem: there is code in the wild which contains mixed space and tab indentation, and any time that happens 3 tabs could mean any number of indentations. I think it is universally accepted that mixed tabs and spaces is indeed **EVIL** I should have said any code using tabs exclusively. -- http://mail.python.org/mailman/listinfo/python-list
Re: who can give me the detailed introduction of re modle?
softwindow wrote: the re module is too large and difficult to study i need a detaild introduction. That's not the kind of question that's likely to get a useful response from an all volunteer newsgroup community, even one with as friendly a reputations as this one. Here's my suggestion: Read the manual page at http://docs.python.org/lib/module-re.html, then try to apply it to a specific problem you'd like to solve with regular expressions. Any problems you run into at that point will be quite specific. If you list the problem you tried to solve, your solution attempt, and what failed, you will likely get lots of useful answers here. But you have to take the first step. P.S. The re module is really not all *that* difficult. Gary Herron -- http://mail.python.org/mailman/listinfo/python-list
Re: Tabs are *MISUNDERSTOOD*, *EVIL* AND *STUPID*, end of discussion. (Re: Tabs versus Spaces in Source Code)
On Thu, 18 May 2006 10:33:58 +0200, Christophe wrote: PoD a écrit : On Wed, 17 May 2006 21:37:14 +0800, Andy Sy wrote: If tabs are easily misunderstood, then they are a MISfeature and they need to be removed. From the Zen of Python: Explicit is better than implicit... In the face of ambiguity, refuse the temptation to guess... Special cases aren't special enough to break the rules... Exactly. How many levels of indentation does 12 spaces indicate? It could be 1,2,3,4,6 or 12. If you say it's 3 then you are _implying_ that each level is represented by 4 spaces. Actually, who said you had to always use the same number of spaces to indent ? 12 = 6 + 6 = 4 + 4 + 4 but also 12 = 2 + 10 = 1 + 1 + 3 + 3 + 4 :D Thus supporting my assertion that space indenting is implicit not explicit. Spaces are evil. How many levels of indentation is 3 tabs? 3 levels in any code that you will find in the wild. No, it could be 3 levels or 3 tabs per level or 2 tabs for the first level and 1 tab for the second ... Could be but wouldn't be. Maybe what Python should do (but never will given the obsession with using spaces) is only allow one level of indentation increase per block so that def foo(): TABTABreturn 'bar' would return a syntax error -- http://mail.python.org/mailman/listinfo/python-list
Re: Getting URL's
Thanks -- http://mail.python.org/mailman/listinfo/python-list
Re: Getting URL's
defcon8 [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] How do I get all the URL's in a page? pyparsing comes with a simple example that does this, too. -- Paul Download pyparsing at http://sourceforge.net/projects/pyparsing -- http://mail.python.org/mailman/listinfo/python-list
Re: Script to make Windows XP-readable ZIP file
softwindow [EMAIL PROTECTED] wrote: Carl Banks is right Did he write to check out: http://groups.google.com/support/bin/answer.py?answer=14213 ? Why didn't you do so? -- John MexIT: http://johnbokma.com/mexit/ personal page: http://johnbokma.com/ Experienced programmer available: http://castleamber.com/ Happy Customers: http://castleamber.com/testimonials.html -- http://mail.python.org/mailman/listinfo/python-list
Re: who can give me the detailed introduction of re modle?
easy and convenient way to get a good introduction for any module [especially if ur stuck and dont have internet connectivity]: 1. start python interpreter $ python 2. import the module and ask it for help :-) import re help(re) -vaibhav -- http://mail.python.org/mailman/listinfo/python-list
Re: who can give me the detailed introduction of re modle?
thanks for your advice! :) -- http://mail.python.org/mailman/listinfo/python-list
Re: WTF? Printing unicode strings
In article [EMAIL PROTECTED], Serge Orlov [EMAIL PROTECTED] wrote: Ron Garret wrote: I'm using an OS X terminal to ssh to a Linux machine. In theory it should work out of the box. OS X terminal should set enviromental variable LANG=en_US.utf-8, then ssh should transfer this variable to Linux and python will know that your terminal is utf-8. Unfortunately AFAIK OS X terminal doesn't set that variable and most (all?) ssh clients don't transfer it between machines. As a workaround you can set that variable on linux yourself . This should work in the command line right away: LANG=en_US.utf-8 python -c print unichr(0xbd) Or put the following line in ~/.bashrc and logout/login export LANG=en_US.utf-8 No joy. [EMAIL PROTECTED]:~$ LANG=en_US.utf-8 python -c print unichr(0xbd) Traceback (most recent call last): File string, line 1, in ? UnicodeEncodeError: 'ascii' codec can't encode character u'\xbd' in position 0: ordinal not in range(128) [EMAIL PROTECTED]:~$ What version of python and what shell do you run? What the following commands print: python -V echo $SHELL $SHELL --version [EMAIL PROTECTED]:~$ python -V Python 2.3.4 [EMAIL PROTECTED]:~$ echo $SHELL /bin/bash [EMAIL PROTECTED]:~$ $SHELL --version GNU bash, version 2.05b.0(1)-release (i386-pc-linux-gnu) Copyright (C) 2002 Free Software Foundation, Inc. [EMAIL PROTECTED]:~$ -- http://mail.python.org/mailman/listinfo/python-list
Re: Tabs are *MISUNDERSTOOD*, *EVIL* AND *STUPID*, end of discussion. (Re: Tabs versus Spaces in Source Code)
PoD wrote: I think it is universally accepted that mixed tabs and spaces is indeed **EVIL** I should have said any code using tabs exclusively. Can you point at any significant body of publically visible Python code which uses tabs exclusively? All of the Python projects I've ever been involved with use spaces only as a convention (although as I pointed out in my previous post, some with more success than others). The problem with conventions such as 'tabs only' or 'space only' is that they only work if everyone sticks to the conventions, and it helps if the same conventions are in place everywhere (otherwise people forget when they switch from one project to another). Also, in the open source universe you are quite likely to pull in bits of code from other projects, and you don't want to either have to reformat it or to switch your editor settings for some files. My experience of programming with either spaces or tabs has taught me that tabs are evil not for themselves, but simply because no matter how hard you try they always end up being mixed with spaces. Do you know of any open-source projects which actually try to enforce a 'tab only' convention for Python? I'd really like to see a similar scan over some 'tab only' code as I did over Plone to see whether they actually manage to remain 'pure'. -- http://mail.python.org/mailman/listinfo/python-list
Re: Tkinter Dialog Management problems:
On Thu, 18 May 2006 11:52:54 -0400, Michael Yanowitz [EMAIL PROTECTED] wrote: Thanks. That helped alot. No problem. However it leaves a couple very minor problems which I think I can live with. 1) It brings up an empty additional 'main window'. I have tried using the Tkinter.NoDefaultRoot() option, but run into other problems with other things not defined. NameError: global name '_default_root' is not defined Exception exceptions.AttributeError: IntVar instance has no attribute '_tk' in bound method IntVar.__del__ of Tkinter.IntVar instance at 0x009C7990 ignored 2) By deriving the 'dialog' from Tk, existing calls to self.pack() no longer are valid, but they don't appear to be necessary. My only 'Tkinter tutorial' is what is included in Orielly's Programming Python. Still looking for a good tutorial. I am not clear what the difference between Tk() and Toplevel() are. They seem totally interchangeable. No, they're not! Never - and I mean *never* - create two instances of Tk in the same application! The Tk instance does not only represent the main window for the application, but also creates the underlying tcl interpreter. Creating two instances of Tk will then create two interpreters and you'll never know which one executes your commands, producing weird TclError's everywhere. If you have a window which can be considered as the main window for your application - there is only one of it, it is always there and closing it means quitting the application -, then make it a sub-class of Tk. If you do not have such a window, use the following trick at the beginning of your application: root = Tkinter.Tk() root.withdraw() This basically creates a main window and immediately hides it. All your other windows must be sub-classes of Toplevel. Calling the quit method of these windows should still quit the application, and calling the destroy method should only close the window. As for tutorials, there are many; just see there: http://tkinter.unpy.net/wiki/Tkinter Apart from the one already given by Rony (which is more a reference than a tutorial), my favorite ones are: - Stephen Ferg's Thinking in Tkinter - http://www.ferg.org/thinking_in_tkinter/index.html - The one at http://doctormickey.com/python/index.html - Gerard Swinnen's Apprendre a programmer avec Python (in French) - http://www.cifen.ulg.ac.be/inforef/swi/python.htm At least, these ones avoid the confusion Frame/window usually found in many others: the first two don't use inheritance at all; only the last (the one in French) implements windows as sub-classes of Tk or Toplevel. Unfortunately, I don't know any english translation of it. A last advice: if you want to do serious Tkinter, it really helps to know how the underlying tcl/tk layer works. So maybe you should learn at least the basics of tcl/tk. And if you do that, you will be able to use tcl/tk resources, such as: http://www.tcl.tk/man/ which is the only documentation I ever need now... HTH -- python -c print ''.join([chr(154 - ord(c)) for c in 'U(17zX(%,5.zmz5(17l8(%,5.Z*(93-965$l7+-']) -- http://mail.python.org/mailman/listinfo/python-list
Re: Complex evaluation bug
Gary Herron a écrit : of wrote: a = 1+3j complex(str(a)) Why does this not work ? It should Says who? By normal conventions in Python, str attempts only to make a nice human readable representation. The function repr is usually expected to provide output that can be parsed back into the original object. (Although for the numeric complex type the two produce identical results.) Further, constructors are rarely expected to parse a string representation to return an object. The function eval is usually expected to provide that functionality. So, putting them together, you could expect eval(repr(a)) to reproduce a, and in fact it does so. Says who ? Python 2.4.2 (#67, Sep 28 2005, 12:41:11) [MSC v.1310 32 bit (Intel)] on win32 Type help, copyright, credits or license for more information. repr(1+3j) '(1+3j)' complex(repr(1+3j)) Traceback (most recent call last): File stdin, line 1, in ? ValueError: complex() arg is a malformed string -- http://mail.python.org/mailman/listinfo/python-list
Re: Tabs are *MISUNDERSTOOD*, *EVIL* AND *STUPID*, end of discussion. (Re: Tabs versus Spaces in Source Code)
PoD a écrit : Maybe what Python should do (but never will given the obsession with using spaces) is only allow one level of indentation increase per block so that def foo(): TABTABreturn 'bar' would return a syntax error Which would make TAB mandatory for indentation. What about some freedom of choice ? -- http://mail.python.org/mailman/listinfo/python-list
Re: Getting URL's
it is difficult to get all URL's in a page you can use sgmllib module to parse html files can get the standard href . -- http://mail.python.org/mailman/listinfo/python-list
Re: Complex evaluation bug
Christophe wrote: So, putting them together, you could expect eval(repr(a)) to reproduce a, and in fact it does so. Says who ? Python 2.4.2 (#67, Sep 28 2005, 12:41:11) [MSC v.1310 32 bit (Intel)] on win32 Type help, copyright, credits or license for more information. repr(1+3j) '(1+3j)' complex(repr(1+3j)) Traceback (most recent call last): File stdin, line 1, in ? ValueError: complex() arg is a malformed string in what language is eval spelled complex ? /F -- http://mail.python.org/mailman/listinfo/python-list
Re: Complex evaluation bug
Fredrik Lundh a écrit : Christophe wrote: So, putting them together, you could expect eval(repr(a)) to reproduce a, and in fact it does so. Says who ? Python 2.4.2 (#67, Sep 28 2005, 12:41:11) [MSC v.1310 32 bit (Intel)] on win32 Type help, copyright, credits or license for more information. repr(1+3j) '(1+3j)' complex(repr(1+3j)) Traceback (most recent call last): File stdin, line 1, in ? ValueError: complex() arg is a malformed string in what language is eval spelled complex ? /F Oups, I was too fast to read what was written. I though you only changed one of the terms ( str - repr ). You'll note that repr and str produce the exact same result for complex. And also, I'm not sure using eval anywhere is a good idea so it probably doesn't help for what the OP wants to do. -- http://mail.python.org/mailman/listinfo/python-list
Re: Tabs are *MISUNDERSTOOD*, *EVIL* AND *STUPID*, end of discussion. (Re: Tabs versus Spaces in Source Code)
Duncan Booth enlightened us with: Can you point at any significant body of publically visible Python code which uses tabs exclusively? Everything Python at http://www.stuvel.eu/software Also, in the open source universe you are quite likely to pull in bits of code from other projects, and you don't want to either have to reformat it or to switch your editor settings for some files. If I grab a module, I just leave the module as is. If I grab a code snippet, I always reformat it to my own style. That's very easy using VIM's retab command. Do you know of any open-source projects which actually try to enforce a 'tab only' convention for Python? My software is, although I'm still the only one working on them ;-) Sybren -- The problem with the world is stupidity. Not saying there should be a capital punishment for stupidity, but why don't we just take the safety labels off of everything and let the problem solve itself? Frank Zappa -- http://mail.python.org/mailman/listinfo/python-list
Re: who can give me the detailed introduction of re modle?
On 18 May 2006 22:50:24 -0700, softwindow [EMAIL PROTECTED] wrote: the re module is too large and difficult to study i need a detaild introduction. http://gnosis.cx/publish/programming/regular_expressions.html -- Cheers, Simon B, [EMAIL PROTECTED], http://www.brunningonline.net/simon/blog/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Opensource vs Microsoft, Wat do you think about opensource?
Ben Finney enlightened us with: Please don't spam here to ask for discussion on another forum, on a tangentially related topic. Hey, it's at least better than asking for a discussion on a tangentially related topic _here_ ;-) Sybren -- The problem with the world is stupidity. Not saying there should be a capital punishment for stupidity, but why don't we just take the safety labels off of everything and let the problem solve itself? Frank Zappa -- http://mail.python.org/mailman/listinfo/python-list
Re: Newbie append() question
Brian Blazer enlightened us with: def getCurrentClasses(): classes = [] print 'Please enter the class name. When finished enter D.' while (c != D): No need for the parentheses, and 'c' doesn't have a value yet. If you add 'c=' before the while-loop, it should be fine. c = raw_input(Enter class name) if (c != D): Here there is also no need for parentheses. Sybren -- The problem with the world is stupidity. Not saying there should be a capital punishment for stupidity, but why don't we just take the safety labels off of everything and let the problem solve itself? Frank Zappa -- http://mail.python.org/mailman/listinfo/python-list
Segmenting a pickle stream without unpickling
Assuming that the items of my_stream share no content (they are dumps of db cursor fetches), is there a simple way to do the equivalent of def pickles(my_stream) : from cPickle import load,dumps while 1 : yield dumps(load(my_stream)) without the overhead associated with unpickling objects just to pickle them again ? TIA, Boris Borcic -- http://mail.python.org/mailman/listinfo/python-list
Re: galaxql
Further to my recent mention of galaxql as a SQL learning tool, I had the following feedback through holdenweb.com: Below is the result of your feedback form. It was submitted by jari komppa ([EMAIL PROTECTED]) on Friday, May 19, 2006 at 00:07:53 --- comments: Steve Holden wrote: Also I just discovered a shareware application called galaxql.. I'd like to note that it's not shareware - I'm not asking money for it. Thanks for spreading the word =) --- Aah, so I should have called it freeware? I believe it's not open source, but I may be incorrect there too - I just downloaded a Windows installer, which worked very smoothly. Sorry to be inaccurate. I am posting to python-list@python.org to correct the mistake. Please feel free to post there yourself to direct people to the Galaxql web site. regards Steve -- Steve Holden +44 150 684 7255 +1 800 494 3119 Holden Web LLC/Ltd http://www.holdenweb.com Love me, love my blog http://holdenweb.blogspot.com Recent Ramblings http://del.icio.us/steve.holden -- http://mail.python.org/mailman/listinfo/python-list
ftplib.ftpcp(), undocumented function?
Hi all, I found this function recently when I read the source code of ftplib module, I almost omit it at all and have tried to write it myself for FXP work. It seems exist long long ago, but never appeared in any document, anyone knows why? Is its implementation broken or planed to be removed from standard library? -- Gong Li -- http://mail.python.org/mailman/listinfo/python-list
Re: WTF? Printing unicode strings
Ron Garret wrote: In article [EMAIL PROTECTED], Serge Orlov [EMAIL PROTECTED] wrote: Ron Garret wrote: I'm using an OS X terminal to ssh to a Linux machine. In theory it should work out of the box. OS X terminal should set enviromental variable LANG=en_US.utf-8, then ssh should transfer this variable to Linux and python will know that your terminal is utf-8. Unfortunately AFAIK OS X terminal doesn't set that variable and most (all?) ssh clients don't transfer it between machines. As a workaround you can set that variable on linux yourself . This should work in the command line right away: LANG=en_US.utf-8 python -c print unichr(0xbd) Or put the following line in ~/.bashrc and logout/login export LANG=en_US.utf-8 No joy. [EMAIL PROTECTED]:~$ LANG=en_US.utf-8 python -c print unichr(0xbd) Traceback (most recent call last): File string, line 1, in ? UnicodeEncodeError: 'ascii' codec can't encode character u'\xbd' in position 0: ordinal not in range(128) [EMAIL PROTECTED]:~$ What version of python and what shell do you run? What the following commands print: python -V echo $SHELL $SHELL --version [EMAIL PROTECTED]:~$ python -V Python 2.3.4 [EMAIL PROTECTED]:~$ echo $SHELL /bin/bash [EMAIL PROTECTED]:~$ $SHELL --version GNU bash, version 2.05b.0(1)-release (i386-pc-linux-gnu) Copyright (C) 2002 Free Software Foundation, Inc. [EMAIL PROTECTED]:~$ That's recent enough. I guess the distribution you're using set LC_* variables for no good reason. Either unset all enviromental variables starting with LC_ and set LANG variable or overide LC_CTYPE variable: LC_CTYPE=en_US.utf-8 python -c print unichr(0xbd) Should be working now :) -- http://mail.python.org/mailman/listinfo/python-list
Re: Question about exausted iterators
Terry Reedy a écrit : Christophe [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] Instead of saying that all works as intended could you be a little helpful and tell me why it was intended in such an obviously broken way instead ? I answered both your explicit and implied questions in good faith. But you seem to be too attached to your pre-judgment to have benefited much, so I won't waste my time and yours saying more. Instead I suggest that you try this: 1. Write a specification for your an alternate, more complicated, iterator protocol. Specification : same as now except iterators raise once StopIteration and any subsequent call to next raises ExaustedIteratorError. 2. Write a simple class with .next method that implements your specification. class ExaustedIteratorError(Exception): pass class safe_iter(object): def __init__(self, seq): self.it = iter(seq) def __iter__(self): return self def next(self): try: return self.it.next() except StopIteration: del self.it raise except AttributeError: raise ExaustedIteratorError 3. Test your class with your example. it = safe_iter(range(10)) print list(it) [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] print list(it) Traceback (most recent call last): File safe_iter_test.py, line 20, in ? print list(it) File safe_iter_test.py, line 13, in next raise ExaustedIteratorError __main__.ExaustedIteratorError 4. Consider how you would persuade people to add the extra machinery needed. Well, the main reason for such change is and will always be to catch bugs. The fact is, using duct typing is something very common with the Python language. And as such, considering a lot of functions which take sequences as parameters work as well with an iterator instead, you can say that it's an application of duct typing. The problem is of course the same as for cases. Even if those two objets ( iterator and container ) look alike from a certain point of view, they have some fundamental differences. So, we have quite a few functions which take freely either a container or an iterator, until someone changes that function a little. At that point there are three kind errors which happen : - the function expected a sequence and tries to access it's [] operator which fails. Standard duct typing behaviour. - the function uses the iterator more than once and so, sometimes it works without errors but produces an incorrect result. - the function uses the iterator more than once but never exhausts it's values. Same result as above but much harder to catch. In the sake of avoiding behaviour which lets obvious errors pass and produces incorrect results, I propose to change the standard behaviour of all the iterators in the standard Python. The change will be so that they refuse to be used anymore once they have been exausted. Thus it'll help catch the second class. The other procedure used to catch such bugs would require explicit typing of the function parameters but this is for some other proposal. 5. Consider what you would do when people don't. I'm already doing it. Cleaning up the code, changing parameters names around so that it is clear such parameter is an iterator and that other one is not, making some functions explicitly refuse iterators etc ... It should not that that last feature will be useful even without the exhausted iterator guard I propose. If you want, post a report on your experiment, and I will read it if I see it. I suppose I could add safe_iter to the builtins in my project and use it around. It would be easy to catch all usages of that one once we settle on something different then. -- http://mail.python.org/mailman/listinfo/python-list
Re: Segmenting a pickle stream without unpickling
Boris Borcic [EMAIL PROTECTED] writes: def pickles(my_stream) : from cPickle import load,dumps while 1 : yield dumps(load(my_stream)) without the overhead associated with unpickling objects just to pickle them again ? I think you'd have to write something special. The unpickler parses as it goes along, and all the dispatch actions build up objects. You'd have to write a set of actions that just read past the representations. I think there's no way to know where an object ends without parsing it, including parsing any objects nested inside it. -- http://mail.python.org/mailman/listinfo/python-list
Specific performance question - Python vs. Java
Hi, I have got a specific question on performance: Is the overhead of object creation in Python lower than in Java? I mean, I would argue, in Java by object creation, the complete class is the model and all methods and attributes are generated for the object. In Python, methods and objects are only generated, if reached: so could this represent a performance advantage for Python? Thanks! -- http://mail.python.org/mailman/listinfo/python-list
Re: Programming language productivity
John Bokma wrote: Connelly Barnes [EMAIL PROTECTED] wrote: http://barnesc.blogspot.com/2006/05/programming-language-productivity.h tml C:3 hours to write the program, 5 hours to track down the memory leaks Java: 4 hours to write the program, 6 hours to get all the exception handling right C++ 5 hours to write the program after reading Stroustrup for 6 hours Just kidding, of course. Also note that Python programmers write more lines/hour which they need to finish in the same time as Perl programmers :-D. -- John MexIT: http://johnbokma.com/mexit/ personal page: http://johnbokma.com/ Experienced programmer available: http://castleamber.com/ Happy Customers: http://castleamber.com/testimonials.html I am not shure whether your criterion is very valid. OK if you have to write only one compact piece of code like in your example. Sometimes I think that most python users fall within this category. Once you get involved in larger projects, the dynamic nature of the programming tool becomes much more important. I mean by this, the ability to stop running code, modify or add to it and continue without having to re-establish the state of the program. This may sound trivial to many, but in major applications setting up the state again can take a considerable processing time. Such feature should be available from within the debugging tools. In fact, languages like Smalltalk, Lisp and even VB offer this possibility. Ruby coming up strongly these days also has this dynamic reload capability. To sum up, I like Python very much but I don't understand how come this basic flaw has not been taken care of. It is sufficient to search for reload to see how many people have struggled with it over the years. I hate the idea of having to take up Ruby to really find out how it could serve me better in this most critical productivity area. -- http://mail.python.org/mailman/listinfo/python-list
Re: Specific performance question - Python vs. Java
reinsn wrote: Hi, I have got a specific question on performance: Is the overhead of object creation in Python lower than in Java? I mean, I would argue, in Java by object creation, the complete class is the model and all methods and attributes are generated for the object. In Python, methods and objects are only generated, if reached: so could this represent a performance advantage for Python? No, this is a misunderstanding on your side. In all OO-languages, the code (methods) are separated from the instance. Thus creating an object results in memory allocation _only_ for the members of that object, not any methods! In python, this boils down to a dictionary holding the members, JAVA/C++ allocate whatever the class makes them to. So, no, no performance advantage. Diez -- http://mail.python.org/mailman/listinfo/python-list
calling python functions using variables
Hi all! this is a (relatively) newbie question I am writing a shell in Python and I am facing a problem The problem is, after taking the input from user, i have to execute the command which is a python function i invoke an 'ls' command like this commands.ls() where commands.py is a file in the same directory what i want to do is commands.VARIABLE() where VARIABLE holds the name of the function which i want to execute and depends on what the user has typed what should i do to achieve that? any help is appreciated thank you -creo P.S. if you want me to clarify the question, please tell me so -- http://mail.python.org/mailman/listinfo/python-list
Re: Windows Registry Dump
@Diez: I'm not trying to hack into somebody's computer - it is about collecting data from my company's anti-virus-parent-server. And all the information is only available in the registry (thanks Symantec...). @Tim, olso and Fredrik: THANKS - I will have a closer look at these modules. regards Dirk -- http://mail.python.org/mailman/listinfo/python-list
Re: calling python functions using variables
creo wrote: i invoke an 'ls' command like this commands.ls() where commands.py is a file in the same directory what i want to do is commands.VARIABLE() where VARIABLE holds the name of the function which i want to execute and depends on what the user has typed You want getattr(commands, VARIABLE)() Peter -- http://mail.python.org/mailman/listinfo/python-list
RE: Windows Registry Dump
[Dirk Hagemann] | @Diez: I'm not trying to hack into somebody's computer - it is about | collecting data from my company's anti-virus-parent-server. | And all the | information is only available in the registry (thanks Symantec...). | | @Tim, olso and Fredrik: THANKS - I will have a closer look at these | modules. One thing occurred to me later, Dirk: are you trying to get the conventional .reg dump file, ie something which you could reload later into the same or another computer? Or are you simply looking for a textual representation of the registry for analysis etc.? From your comment above it sounds like the latter. Be aware, btw, if you go down the .reg route (the one I suggested): the data in the files are UTF-16 encoded. TJG This e-mail has been scanned for all viruses by Star. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk -- http://mail.python.org/mailman/listinfo/python-list
how to read a list from python in C?
Hi, all I am writing a C extension with .Net. Now I have a list of points, like [(0.0, 0.0), (2.0, 3.0), (random x, random y)]. Is there a better way to translate it to an array than doing it one by one? Thanks -- http://mail.python.org/mailman/listinfo/python-list
Re: calling python functions using variables
Peter Otten [EMAIL PROTECTED] writes: creo wrote: what i want to do is commands.VARIABLE() where VARIABLE holds the name of the function which i want to execute and depends on what the user has typed You want getattr(commands, VARIABLE)() You'll also need to anticipate the situation where the value bound to VARIABLE is not the name of an attribute in 'commands'. Either deal with the resulting NameError exception (EAFP[0]) or test first whether the attribute exists (LBYL[1]). [0] Easier to Ask Forgiveness than Permission [1] Look Before You Leap -- \ Our products just aren't engineered for security. -- Brian | `\ Valentine, senior vice-president of Microsoft Windows | _o__) development | Ben Finney -- http://mail.python.org/mailman/listinfo/python-list
Re: who can give me the detailed introduction of re modle?
softwindow wrote: the re module is too large and difficult to study i need a detaild introduction. http://www.amk.ca/python/howto/regex/ Kent -- http://mail.python.org/mailman/listinfo/python-list
Python and Test Driven Development
First part of a series of articles about Python and Test Driven Development can be found at http://dtmilano.blogspot.com/2006/05/python-and-test-driven-development.html. These articles include some scripts to ease automatic test suite creation in Python. Comments are gladly welcome. -- http://mail.python.org/mailman/listinfo/python-list
Re: Windows Registry Dump
Hi Tim! I want to do some analysis (as always ;-) ) and for that reason I think it's more practical to go trough a text-file. I can produce this text-file also by right-click on the key (the folder) in the registry and select Export. There one can select Text-File and the place where to save the text-file. This I want to be done by python automatically. Dirk -- http://mail.python.org/mailman/listinfo/python-list
RE: Windows Registry Dump
[Dirk Hagemann] | I want to do some analysis (as always ;-) ) and for that | reason I think | it's more practical to go trough a text-file. I can produce this | text-file also by right-click on the key (the folder) in the registry | and select Export. There one can select Text-File and the | place where | to save the text-file. This I want to be done by python automatically. Well, unless you want to go to the effort of recreating the .reg file format, it's probably worth trying to call regedit with a param or two: http://www.windowsitlibrary.com/Content/237/2.html suggests that something like: regedit /e c:\temp\desktop.reg HKEY_CURRENT_USER\Control Panel\Desktop will do the business. (And it worked for me a on a simple test run). TJG This e-mail has been scanned for all viruses by Star. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk -- http://mail.python.org/mailman/listinfo/python-list
Re: calling python functions using variables
Ben Finney wrote:
Peter Otten [EMAIL PROTECTED] writes:
(snip)
You want
getattr(commands, VARIABLE)()
You'll also need to anticipate the situation where the value bound to
VARIABLE is not the name of an attribute in 'commands'.
Either deal with the resulting NameError exception (EAFP[0])
try:
getattr(commands, VARIABLE)()
except NameError:
print sys.stderr, Unknown command, VARIABLE
or test
first whether the attribute exists (LBYL[1]).
command = getattr(commands, VARIABLE, None)
if command is None:
print sys.stderr, Unknown command, VARIABLE
else:
command()
I'd go for the first solution.
--
bruno desthuilliers
python -c print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in '[EMAIL PROTECTED]'.split('@')])
--
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Re: who can give me the detailed introduction of re modle?
softwindow wrote:
the re module is too large and difficult to study
Too bad.
i need a detaild introduction.
That's fine. Then write it. Or pay someone to do so.
Just for the record : that's the only answers you would have get on most
usenet groups. Hopefully, c.l.py is a very friendly and tolerant newsgroup.
Seriously, do yourself a favour, read this:
http://www.catb.org/~esr/faqs/smart-questions.html
HTH
--
bruno desthuilliers
python -c print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in '[EMAIL PROTECTED]'.split('@')])
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Re: Which is More Efficient?
Fredrik Lundh wrote: Dustan wrote: Obviously it takes a geek to know you have to time it, as opposed to any other task you could be talking about. wasn't the original question my program uses a lot of CPU, and I want to make it more efficient ? what does a lot of CPU and more efficient mean to you, and how do you know that your program uses a lot of CPU ? The task manager says CPU Usage: 100% when the program is running, and only when the program is running. Efficiency is a measure of 2 things: CPU usage and time. If you measure just time, you're not necessarily getting the efficiency. /F -- http://mail.python.org/mailman/listinfo/python-list
Re: Which is More Efficient?
Dustan wrote: Fredrik Lundh wrote: Dustan wrote: Obviously it takes a geek to know you have to time it, as opposed to any other task you could be talking about. wasn't the original question my program uses a lot of CPU, and I want to make it more efficient ? what does a lot of CPU and more efficient mean to you, and how do you know that your program uses a lot of CPU ? The task manager says CPU Usage: 100% when the program is running, and only when the program is running. Efficiency is a measure of 2 things: CPU usage and time. If you measure just time, you're not necessarily getting the efficiency. /F By the way, I've only been programming for a year or so (probably 18 months at the most). I'm sure that can't label me as a 'newbie', but at least consider that before you criticize me like you did when I asked about scientific notation. -- http://mail.python.org/mailman/listinfo/python-list
Encode exception for chinese text
Hi all, I am new to python. I have written one small application which reads data from xml file and tries to encode data using apprpriate charset. I am facing problem while encoding one chinese paragraph with charset gb2312. code is: encoded_str = str_data.encode(gb2312) The type of str_data is type 'unicode' The exception is: UnicodeEncodeError: 'gb2312' codec can't encode character u'\xa0' in position 0: illegal multibyte sequence Can anyone please give me direction to solve this isssue. Regards, Vinayakc -- http://mail.python.org/mailman/listinfo/python-list
Re: Newbie append() question
Thanks guys. Your solutions worked. I'm still not sure why it was grabbing the prompt string though. Thanks again, Brian [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
Re: Encode exception for chinese text
Are you sure all the characters in original text are in gb2312 charset? Encoding with utf8 seems work for this character (u'\xa0'), but I don't know if the result is correct. Could you give a subset of str_data in unicode? -- http://mail.python.org/mailman/listinfo/python-list
Re: WTF? Printing unicode strings
Serge Orlov wrote: Ron Garret wrote: In article [EMAIL PROTECTED], Serge Orlov [EMAIL PROTECTED] wrote: Ron Garret wrote: I'm using an OS X terminal to ssh to a Linux machine. In theory it should work out of the box. OS X terminal should set enviromental variable LANG=en_US.utf-8, then ssh should transfer this variable to Linux and python will know that your terminal is utf-8. Unfortunately AFAIK OS X terminal doesn't set that variable and most (all?) ssh clients don't transfer it between machines. As a workaround you can set that variable on linux yourself . This should work in the command line right away: LANG=en_US.utf-8 python -c print unichr(0xbd) Or put the following line in ~/.bashrc and logout/login export LANG=en_US.utf-8 No joy. [EMAIL PROTECTED]:~$ LANG=en_US.utf-8 python -c print unichr(0xbd) Traceback (most recent call last): File string, line 1, in ? UnicodeEncodeError: 'ascii' codec can't encode character u'\xbd' in position 0: ordinal not in range(128) [EMAIL PROTECTED]:~$ What version of python and what shell do you run? What the following commands print: python -V echo $SHELL $SHELL --version [EMAIL PROTECTED]:~$ python -V Python 2.3.4 [EMAIL PROTECTED]:~$ echo $SHELL /bin/bash [EMAIL PROTECTED]:~$ $SHELL --version GNU bash, version 2.05b.0(1)-release (i386-pc-linux-gnu) Copyright (C) 2002 Free Software Foundation, Inc. [EMAIL PROTECTED]:~$ That's recent enough. I guess the distribution you're using set LC_* variables for no good reason. Either unset all enviromental variables starting with LC_ and set LANG variable or overide LC_CTYPE variable: LC_CTYPE=en_US.utf-8 python -c print unichr(0xbd) Should be working now :) I've pulled myself together and installed linux in vwware player. Apparently there is another way linux distributors can screw up. I chose debian 3.1 minimal network install and after answering all installation questions I found that only ascii and latin-1 english locales were installed: $ locale -a C en_US en_US.iso88591 POSIX In 2006, I would expect utf-8 english locale to be present even in minimal install. I had to edit /etc/locale.gen and run locale-gen as root. After that python started to print unicode characters. -- http://mail.python.org/mailman/listinfo/python-list
Re: Question about exausted iterators
Consider this example: X = range(5) Y = iter(X) Z = iter(Y) As you can see, X is a container, and Y is an iterator. They are simliar in that iter works on them both. Cristoph claims that this causes confusion. Why? Because iter doesn't have the same meaning for both of them. For X it always returns an iterator that yields the same set of values. For Y it returns an iterator yielding different values each time. Z = iter(Y) Z.next() 0 Z = iter(Y) Z.next() 1 Most of the uses of iterators iterate all values until exaustion. Given that, the first call to iter will mean the same for an iterator and a container, but the second one won't. Allow me to compare it to division in python 2.4 4./2, 4/2 2.0, 2 5./2, 5/2 2.5, 2 Division sometimes works the same for integers and reals, and sometimes doesn't. This caused consfusion and bugs, and that's why future Pythons will change that. But changing iter to have the same meaning for containers and iterables is impossible. You cannot, conceptually, reiterate an iterator. So what Cristoph is suggesting - is to add an exception for the cases in which iterators and collections behave differently. Somewhat similar to this: 4/2 2 5/2 Traceback (most recent call last): File stdin, line 1, in ? IntegerDivisionError: 5 does not divide by 2 -- http://mail.python.org/mailman/listinfo/python-list
Re: newb: comapring two strings
Use the levenshtein distance. Given the constraint that the two strings are the same length, I'm assuming (as other posters appear to have done) that vary by only one character precludes insertion and deletion operations. In that case, the problem can be solved in O(n) time by a simple loop which counts the number of differences and notes the position of the first (if any) difference. Any full-distance Levenshtein method that does no pre-processing must take O(n**2) time. It is possible to take advantage of the fact that the OP doesn't care about what the distance is exactly if it is not 1; 0 is just as bad as 2, 3, 4, etc. In this case it is possible to achieve O(n) time [ref. Ukkonen]. However (a) one still needs to track where the difference arose (b) we are talking about extreme overkill for the OP's problem. -- http://mail.python.org/mailman/listinfo/python-list
memory error with zipfile module
I do
import zipfile
zip=zipfile.ZipFile('d:\somepath\cdimage.zip')
zip.namelist()
['someimage.iso']
then either of the two:
A) file('someimage.iso','w').write(zip.read('someimage.iso'))
or
B) content=zip.read('someimage.iso')
but both result in the same error:
Traceback (most recent call last):
File stdin, line 1, in ?
File D:\u\Python24\lib\zipfile.py, line 357, in read
bytes = dc.decompress(bytes)
MemoryError
I thought python was supposed to handle memory for you?
The python zipfile module is obviously broken...
Any advise?
--
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Re: Which is More Efficient?
Dustan [EMAIL PROTECTED] wrote in news:[EMAIL PROTECTED]: The task manager says CPU Usage: 100% when the program is running, and only when the program is running. Efficiency is a measure of 2 things: CPU usage and time. If you measure just time, you're not necessarily getting the efficiency. A lot of people, when they say 'uses a lot of CPU' are leaving off 'time'. I.e., CPU usage is pretty much talked about in terms of cycles, which is roughly utilization*time. Profiling tools often report both clock time and cpu time. Cpu time is a rough analog for cycles, clock time is self explanatory. max -- http://mail.python.org/mailman/listinfo/python-list
Re: Encode exception for chinese text
Vinayakc wrote: Hi all, I am new to python. I have written one small application which reads data from xml file and tries to encode data using apprpriate charset. I am facing problem while encoding one chinese paragraph with charset gb2312. code is: encoded_str = str_data.encode(gb2312) The type of str_data is type 'unicode' The exception is: UnicodeEncodeError: 'gb2312' codec can't encode character u'\xa0' in position 0: illegal multibyte sequence Hmm, this is 'no-break space' in the very beginning of the text. It look suspiciously like a plain text utf-8 signature which is 'zero width no-break space'. If you strip the first character do you still have encoding errors? -- http://mail.python.org/mailman/listinfo/python-list
How to append to a dictionary
I have some code here:
groups = {'IRISH' : 'green', 'AMERICAN' : 'blue'}
I want to add another key: 'ITALIAN' : 'orange'
How do I append this to 'groups'?
Thanks,
Harlin Seritt
--
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Re: How to append to a dictionary
groups = {'IRISH' : 'green', 'AMERICAN' : 'blue'}
I want to add another key: 'ITALIAN' : 'orange'
How do I append this to 'groups'?
groups['ITALIAN'] = 'orange'
as described at
http://docs.python.org/tut/node7.html#SECTION00750
-tkc
--
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Re: How to append to a dictionary
Harlin Seritt enlightened us with:
I have some code here:
groups = {'IRISH' : 'green', 'AMERICAN' : 'blue'}
I want to add another key: 'ITALIAN' : 'orange'
How do I append this to 'groups'?
groups['ITALIAN'] = 'orange'
Sybren
--
The problem with the world is stupidity. Not saying there should be a
capital punishment for stupidity, but why don't we just take the
safety labels off of everything and let the problem solve itself?
Frank Zappa
--
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Re: Newbie append() question
Brian Blazer enlightened us with: I'm still not sure why it was grabbing the prompt string though. Me neither. Try it in a standalone script instead of an interactive session. Sybren -- The problem with the world is stupidity. Not saying there should be a capital punishment for stupidity, but why don't we just take the safety labels off of everything and let the problem solve itself? Frank Zappa -- http://mail.python.org/mailman/listinfo/python-list
Re: WTF? Printing unicode strings
Ron Garret a écrit : In article [EMAIL PROTECTED], Fredrik Lundh [EMAIL PROTECTED] wrote: Ron Garret wrote: u'\xbd' u'\xbd' print _ Traceback (most recent call last): File stdin, line 1, in ? UnicodeEncodeError: 'ascii' codec can't encode character u'\xbd' in position 0: ordinal not in range(128) so stdout on your machine is ascii, and you don't understand why you cannot print a non-ascii unicode character to it? wtf? /F I forgot to mention: sys.getdefaultencoding() 'utf-8' print u'\xbd' Traceback (most recent call last): File stdin, line 1, in ? UnicodeEncodeError: 'ascii' codec can't encode character u'\xbd' in position 0: ordinal not in range(128) This is default encoding for evaluation of expressions in u... strings, this has nothing to do with printing. For the output encoding, see sys.stdout.encoding. import sys sys.stdout.encoding 'cp850' A+ Laurent. -- http://mail.python.org/mailman/listinfo/python-list
Re: who can give me the detailed introduction of re modle?
softwindow wrote: the re module is too large and difficult to study it's powerful, takes a little time to work with. Make yourself aware of the VERBOSE switch, RE debuggers in komodo and Wing, string functions/methods and when you need a full parser, also http://www.awaretek.com/tutorials.html#regular http://en.wikibooks.org/wiki/Programming:Python_Strings http://www.regexlib.com/Default.aspx http://www.regular-expressions.info/python.html http://www.unixreview.com/documents/s=2472/uni1037388368795/ http://diveintopython.org/regular_expressions/index.html#re.intro i need a detaild introduction. You have everything you need -- http://mail.python.org/mailman/listinfo/python-list
Re: memory error with zipfile module
Hari Sekhon [EMAIL PROTECTED] writes: Traceback (most recent call last): File stdin, line 1, in ? File D:\u\Python24\lib\zipfile.py, line 357, in read bytes = dc.decompress(bytes) MemoryError Looks like the .iso file is huge. Even if it's only a CD image (approx 650MB), reading it all into memory in a single string is not a good idea. The python zipfile module is obviously broken... Indeed. I am surprised that there is no API that returns a file object. Ganesan -- Ganesan Rajagopal -- http://mail.python.org/mailman/listinfo/python-list
problem with import autotest ...
Hi all, Please beware I am new to Python and have little experience with it. I have a script that works just fine on linux but when I try to debug from Windows using Eclipse and PyDEV plugin then it does not work. The Python version is the same 2.3.x , and command line is roughly the same. from Unix: mymodule.py my-params From Windows (Eclipse) python.exe mymodule.py my-params The point is that from Linux the import autotest works as intended i.e. just allow the importing module use some functions but from Windows it autoruns itself just by importing it, I do not get why or how? From Windows it does: Regression test. This will find all modules whose name is test_* in the test directory, and run them. Various command line options provide additional facilities and then starts executing tests without ever getting to the main of my module ... Any clues? TIA, Best Regards, Giovanni -- http://mail.python.org/mailman/listinfo/python-list
Re: Encode exception for chinese text
Yes serge, I have removed the first character but it is still giving encoding exception. -- http://mail.python.org/mailman/listinfo/python-list
Re: Encode exception for chinese text
1. *By definition*, you can encode *any* Unicode string into utf-8. Proves nothing. 2. \u00a0 [no-break space] has no equivalent in gb2312, nor in the later gbk alias cp936. It does have an equivalent in the latest Chinese encoding, gb18030. 3. gb2312 is outdated. It is not really an appropriate charset for anything much these days. You need to check out what your requirements really are. The unknowing will cheerfully use gb to mean one or more of those, or to mean anything that's not big5 :-) 4. The slab of text you supplied is genuine unicode and encodes happily into all those gb* charsets. It does *not* contain \u00a0. I do hope some of this helps Cheers, John -- http://mail.python.org/mailman/listinfo/python-list
Python sqlite and regex.
Hi,
I'd like to use regular expressions in sqlite query, I using apsw module
but it doesn't work...Can you help me ?
My script:
import apsw
import re
path = 'db/db.db3'
#regexp function (extract from python-list discusion)
def regexp(expr, item):
reg = re.compile(expr)
return reg.match(item) is not None
con = apsw.Connection(path)
#create function
con.createscalarfunction(REGEXP, regexp)
cur = con.cursor()
#exampl
cur.execute(select foo from test where foo regex 'aa.[0-9]))
and the error is:
cur.execute('select foo from test where foo regex tata')
apsw.SQLError: SQLError: near regex: syntax error
Thanks
--
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Re: memory error with zipfile module
Hari Sekhon wrote:
I do
import zipfile
zip=zipfile.ZipFile('d:\somepath\cdimage.zip')
zip.namelist()
['someimage.iso']
then either of the two:
A) file('someimage.iso','w').write(zip.read('someimage.iso'))
or
B) content=zip.read('someimage.iso')
but both result in the same error:
Traceback (most recent call last):
File stdin, line 1, in ?
File D:\u\Python24\lib\zipfile.py, line 357, in read
bytes = dc.decompress(bytes)
MemoryError
otIs that the *full* traceback ?/ot
I thought python was supposed to handle memory for you?
Err... This doesn't mean that it bypasses system's memory management.
http://pyref.infogami.com/MemoryError
http://mail.zope.org/pipermail/zope/2004-October/153882.html
MemoryError is raised by Python when an underlying (OS-level) allocation
fails.
(...)
Normally this would mean that you were out of even virtual memory
(swap), but it could also be a symptom of a libc bug, a bad RAM chip, etc.
What do you think will append if you try to allocate a huge block when
you've already eaten all available memory ? Do you really hope that
Python will give you extra ram for free ?-)
Please try this code:
import zipfile
zip=zipfile.ZipFile('d:\somepath\cdimage.zip')
info = zip.getinfo('someimage.iso')
csize = info.compress_size
fsize = info.file_size
print someimage compressed size is : %s % csize
print someimage real file size is : %s % fsize
print
So, knowing how zipfile.read() is actually implemented,
total needed ram is : %s
% (csize + fsize)
print Well... Do I have that much memory available ???
The python zipfile module is obviously broken...
s/is obviously broken/could be improved to handle huge files/
Making such statements may not be the best way to make friends...
Any advise?
Yes : Python is free software ('free' as in 'free speach' *and* as in
'free beer'), mostly written by benevolent contributors. So try and
improve the zipfile module by yourself, and submit your enhancements.
Then we all will be very grateful, and your name will be forever in the
Python Hall of Fame.
Or choose to behave as a whiny-whiny clueless luser making dumb
statements, and your name will be buried for a long long time in a lot
of killfiles.
It's up to you !-)
NB : If you go the first route, this may help:
http://www.python.org/doc/2.4.2/lib/module-zlib.html
with particular attention to the decompressobj.
HTH
--
bruno desthuilliers
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p in '[EMAIL PROTECTED]'.split('@')])
--
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Re: Encode exception for chinese text
Vinayakc wrote: Yes serge, I have removed the first character but it is still giving encoding exception. Then I guess this character was used as a poor man indentation tool at least in the beginning of your text. It's up to you to decide what to do with that character, you have several choices: * edit source xml file to get rid of it * remove it while you process your data * replace it with ordinary space * consider utf-8 Note, there are legitimate use cases for no-break space, for example one million can be written like 1 000 000, where spaces are non-breakable. This prevents the number to be broken by right margin like this: 1 000 000 Keep that in mind when you remove or replace no-break space. -- http://mail.python.org/mailman/listinfo/python-list
Re: CFLAGS are not taken into account properly
[EMAIL PROTECTED] wrote: Toon But some other (but 'similar') functionality is broken. Now I Toon succeeded in compiling python. But when using distutils (e.g. when Toon installing numarray using the setup.py), python will compile the Toon files using the '-xarch=v9' option but drops this option when Toon linking dynamic libraries (although I defined LDFLAGS=-xarch=v9 Toon before configuring python). Additionally python adds the option Toon '-xcode=pic32' to the compile-command which will compile my Toon numarray in 32bit instead of 64bit (while python itself is in Toon 64bit) That seems like a bug in distutils. Can you submit a help ticket? Skip Done -- http://mail.python.org/mailman/listinfo/python-list
Re: Encode exception for chinese text
Hey Serge, john, Thank you very much. I was really not aware of these facts. Anyways this is happening only for one in millions so I can ignore this for now. Thanks again, Vinayakc -- http://mail.python.org/mailman/listinfo/python-list
Re: Python sqlite and regex.
On Fri, 19 May 2006 14:47:10 +0200,
Julien ARNOUX [EMAIL PROTECTED] wrote:
cur.execute(select foo from test where foo regex 'aa.[0-9]))
and the error is:
cur.execute('select foo from test where foo regex tata')
apsw.SQLError: SQLError: near regex: syntax error
I think you're missing a closing quote on that regex; or perhaps that's
an extra closing parenthesis at the end.
Also, it's probably best to let the database module do any escaping you
may need. For example:
fooregex = r'aa.[0-9]'
sql = 'select foo from test where foo regex %s'
cur.execute( sql, tuple( fooregex ) )
See the DP API spec for more information.
Regards,
Dan
--
Dan Sommers
http://www.tombstonezero.net/dan/
I wish people would die in alphabetical order. -- My wife, the genealogist
--
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Re: Question about exausted iterators
[EMAIL PROTECTED] wrote: Consider this example: X = range(5) Y = iter(X) Z = iter(Y) As you can see, X is a container, and Y is an iterator. They are simliar in that iter works on them both. Cristoph claims that this causes confusion. Why? Because iter doesn't have the same meaning for both of them. For X it always returns an iterator that yields the same set of values. For Y it returns an iterator yielding different values each time. As an aside, perhaps iter(Y) should be returning a deeper copy of Y. As it stands, I see 'Z=Y' giving the same effect: y=iter(x) z=iter(y) zip(y, z) [(0, 1), (2, 3)] y=iter(x) z=y zip(y, z) [(0, 1), (2, 3)] [ ... ] But changing iter to have the same meaning for containers and iterables is impossible. You cannot, conceptually, reiterate an iterator. So what Cristoph is suggesting - is to add an exception for the cases in which iterators and collections behave differently. Somewhat similar to this: But the end, raising StopIteration is not where the difference is. The difference is in iter(some_object). iter(some_container) creates a brand new iterator, standing at the starting line and ready to run. iter(some_listiterator), it seems, just returns a reference to some_listiterator, with some of its history possibly behind it. Iterators are used in the same syntactic places as general iterables, but especially once people start giving them names and handing them around, the real differences show up. The short-range solution is Know What You're Doing. Duck typing is a fine thing, but it works best for programmers who keep scrupulous track of their objects' types. Cheers,Mel. -- http://mail.python.org/mailman/listinfo/python-list
noob import question
OK, I have a very simple class here: class Student: Defines the student class def __init__(self, lName, fName, mi): self.lName = lName self.fName = fName self.mi = mi Then I have a small script that I am using as a test: from Student import * s1 = Student(Brian, Smith, N) print s1.lName This works as expected. However, if I change the import statement to: import Student I get an error: TypeError: 'module' object is not callable I have tried to look up what is going on, but I have not found anything. Would it be possible for someone to take a minute and give an explanation? Thank you - your time is appreciated. Brian [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
about py2exe, I installed it, but can't find py2exe.exe in my computer.
I installed it, but can't find py2exe.exe in my computer. why? And , when I execute python setup.py py2exe under command line, it prompt error:wrong command py2exe . -- http://mail.python.org/mailman/listinfo/python-list
Re: noob import question
Brian Blazer wrote: OK, I have a very simple class here: class Student: Defines the student class def __init__(self, lName, fName, mi): self.lName = lName self.fName = fName self.mi = mi Then I have a small script that I am using as a test: from Student import * s1 = Student(Brian, Smith, N) print s1.lName This works as expected. However, if I change the import statement to: import Student I get an error: TypeError: 'module' object is not callable I have tried to look up what is going on, but I have not found anything. Would it be possible for someone to take a minute and give an explanation? I take it you are getting the error on the line s1 = Student(Brian, Smith, N) This is because when you use 'import Student', it loads the file Student.py into a namespace called Student (unlike the 'from' statement, which loads it into the main namespace). to access anything from your Student module, prepend with Student. , so your line becomes: s1 = Student.Student(Brian, Smith, N) Iain Thank you - your time is appreciated. Brian [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
Re: noob import question
I have tried to look up what is going on, but I have not found anything. Would it be possible for someone to take a minute and give an explanation? The from module import *|nameslist syntax imports some or all names found in module into the current modules namespace. Thus you can access your class. But if you do import module you only get module in your current namespace. So you need to access anything inside module by prefixing the expression. In your case, it is Student.Student If you only write Student, that in fact is the MODULE Student, which explains the error message. Now while this sounds as if the from module import * syntax is the way to go, you should refrain from that until you really know what you are doing (and you currently _don't_ know), as this can introduce subtle and difficult to debug bugs. If you don't want to write long module-names, you can alias them: import moduel-with-long-name as shortname And it seems as if you have some JAVA-background, putting one class in one file called the same as the class. Don't do that, it's a stupid restriction in JAVA and should be avoided in PYTHON. Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: noob import question
Thank you for your responses. I had a feeling is had something to do with a namespace issue but I wasn't sure. You are right, I do come from a Java background. If it is poor form to name your class file the same as your class, can I ask what the standard is? Thanks again, Brian On May 19, 2006, at 8:33 AM, Diez B. Roggisch wrote: I have tried to look up what is going on, but I have not found anything. Would it be possible for someone to take a minute and give an explanation? The from module import *|nameslist syntax imports some or all names found in module into the current modules namespace. Thus you can access your class. But if you do import module you only get module in your current namespace. So you need to access anything inside module by prefixing the expression. In your case, it is Student.Student If you only write Student, that in fact is the MODULE Student, which explains the error message. Now while this sounds as if the from module import * syntax is the way to go, you should refrain from that until you really know what you are doing (and you currently _don't_ know), as this can introduce subtle and difficult to debug bugs. If you don't want to write long module- names, you can alias them: import moduel-with-long-name as shortname And it seems as if you have some JAVA-background, putting one class in one file called the same as the class. Don't do that, it's a stupid restriction in JAVA and should be avoided in PYTHON. Diez -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: Programming language productivity
malv [EMAIL PROTECTED] writes: [snip] Once you get involved in larger projects, the dynamic nature of the programming tool becomes much more important. I mean by this, the ability to stop running code, modify or add to it and continue without having to re-establish the state of the program. This may sound trivial to many, but in major applications setting up the state again can take a considerable processing time. Such feature should be available from within the debugging tools. In fact, languages like Smalltalk, Lisp and even VB offer this possibility. Ruby coming up strongly these days also has this dynamic reload capability. To sum up, I like Python very much but I don't understand how come this basic flaw has not been taken care of. It is sufficient to search for reload to see how many people have struggled with it over the years. I hate the idea of having to take up Ruby to really find out how it could serve me better in this most critical productivity area. What is major project? We have 50 people working on a project, over 5 years, in Python. Much of the regresison test can be done by rebuilding context in RAM (no need to persist). That is immediate (whole test suite runs in a few seconds). Sometimes we have to reestablish context by clearing the database and then reloading objects from test_input XML files. That is slow (perhaps an over night job). I've yet to experience a context where language features are the rate limiting step. On the other hand, I have definitely experienced language as a rate limiting factor in a) peer code reviews, b) debugging, c) ramping up new team members. Python wins those battles everytime. -- Harry George PLM Engineering Architecture -- http://mail.python.org/mailman/listinfo/python-list
Re: about py2exe, I installed it, but can't find py2exe.exe in my computer.
python wrote: I installed it, but can't find py2exe.exe in my computer. why? why are you looking for an EXE file? py2exe is a Python module, not an application. And , when I execute python setup.py py2exe under command line, it prompt error:wrong command py2exe . you're supposed to import py2exe into your setup file. if you don't do that, you'll get the above error message. have you read the using py2exe section on this page: http://www.py2exe.org/ ? /F -- http://mail.python.org/mailman/listinfo/python-list
released: RPyC 2.60
Remote Python Call (RPyC) has been released. this release introduces delivering objects, reducing memory consumption with __slots__, and several other new/improved helper functions. see the release notes and changelog (on the site) for more info. home: http://rpyc.wikispaces.com -tomer -- http://mail.python.org/mailman/listinfo/python-list
Re: noob import question
Brian Blazer wrote: Thank you for your responses. I had a feeling is had something to do with a namespace issue but I wasn't sure. You are right, I do come from a Java background. If it is poor form to name your class file the same as your class, can I ask what the standard is? Consider python modules what packages are in JAVA - aggregations of related classes. Only if your module grows to an unmanagable size, split it up into two modules. Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: Which is More Efficient?
Dustan wrote: The task manager says CPU Usage: 100% when the program is running, and only when the program is running. Efficiency is a measure of 2 things: CPU usage and time. If you measure just time, you're not necessarily getting the efficiency. are you for real? /F -- http://mail.python.org/mailman/listinfo/python-list
Re: noob import question
On May 19, 2006, at 15:33, Diez B. Roggisch wrote: And it seems as if you have some JAVA-background, putting one class in one file called the same as the class. Don't do that, it's a stupid restriction in JAVA and should be avoided in PYTHON. Restrictive or not, what's so fundamentally devious in putting a class declaration in a separate file whose name is that of the declared class (class Queue - Queue.py)? Sounds like a handy way of organizing your code, no? Cheers -- PA, Onnay Equitursay http://alt.textdrive.com/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Script to make Windows XP-readable ZIP file
On 2006-05-19, softwindow [EMAIL PROTECTED] wrote: Carl Banks is right That would be valuable information if we know what he was right about. -- Grant Edwards grante Yow! Bo Derek ruined at my life! visi.com -- http://mail.python.org/mailman/listinfo/python-list
Re: calling python functions using variables
On 2006-05-19, bruno at modulix [EMAIL PROTECTED] wrote: Either deal with the resulting NameError exception (EAFP[0]) try: getattr(commands, VARIABLE)() except NameError: print sys.stderr, Unknown command, VARIABLE or test first whether the attribute exists (LBYL[1]). command = getattr(commands, VARIABLE, None) if command is None: print sys.stderr, Unknown command, VARIABLE else: command() I'd go for the first solution. Me too. Assuming the user isn't clueless, the normal case is where the command exists. Write code for the normal case and use the exception that occurs for exceptional cases. -- Grant Edwards grante Yow! This PIZZA symbolizes at my COMPLETE EMOTIONAL visi.comRECOVERY!! -- http://mail.python.org/mailman/listinfo/python-list
Re: how to read a list from python in C?
Lialie I am writing a C extension with .Net. Now I have a list of Lialie points, like [(0.0, 0.0), (2.0, 3.0), (random x, random y)]. Lialie Is there a better way to translate it to an array than doing it Lialie one by one? Are you passing a list as an argument to one of the functions in your C extension module? If so, yup, you get the list argument and march through it element-by-element, then march through those tuples. For more detail on argument handling in C, read here: http://www.python.org/doc/api/arg-parsing.html Skip -- http://mail.python.org/mailman/listinfo/python-list
Re: noob import question
PA [EMAIL PROTECTED] wrote: Restrictive or not, what's so fundamentally devious in putting a class declaration in a separate file whose name is that of the declared class (class Queue - Queue.py)? nothing. Sounds like a handy way of organizing your code, no? sure, if you prefer to do things that way. the Python style guide (PEP 8) used to recommend naming a module that con- tains only one class (plus support factories and other functions) after the class, but now recommends using other names for the module, to avoid confusion. for some reason, some people seem to treat the latest edition of each PEP as a divine truth, and all earlier editions as works of the devil. I guess they reset their brain before each svn update. /F -- http://mail.python.org/mailman/listinfo/python-list
Re: python vs perl lines of code
Edward Elliott wrote: For inquiries into real-world code, it's enough to believe that I'm not lying Yeah, well, this is the internet -- I've gotten emails trying to sell me ex-soviet rocket-launchers and child porn.* So I don't make assumptions about people without some kind of evidence. There *are* plenty of bad guys out there, so one learns both to have a thick skin and to rely on that which is reasonably proven, rather than making casual assumptions of good will. That'd be like leaving your car in downtown LA overnight with the doors unlocked. Cheers, Terry *In the same email, no less. This is of course an extreme example, but there are *loads* of merely irritating behaviors like trolling. -- Terry Hancock ([EMAIL PROTECTED]) Anansi Spaceworks http://www.AnansiSpaceworks.com -- http://mail.python.org/mailman/listinfo/python-list
Re: noob import question
Brian Blazer wrote:
OK, I have a very simple class here:
class Student:
class Student(object):
Defines the student class
def __init__(self, lName, fName, mi):
self.lName = lName
self.fName = fName
self.mi = mi
Do yourself a favour: use meaningful names.
Then I have a small script that I am using as a test:
from Student import *
So your module is named Student.py ? The common convention is to use
all_lower for modules, and CapNames for classes. BTW, unlike Java, the
common use is to group closely related classes and functions in a same
module.
s1 = Student(Brian, Smith, N)
print s1.lName
This works as expected. However, if I change the import statement to:
import Student
I get an error:
TypeError: 'module' object is not callable
Of course. And that's one for the reason for naming modules all_lower
and classes CapNames.
With
from Student import *
you import all the names (well... not all, read the doc about this)
defined in the module Student directly in the current namespace. So,
since the module Student contains the class Student, in this current
namespace, the name Student refers to the class Student.
With
import Student
you import the module name Student in the current namespace. You can
then refer to names defined in module Student with the qualified name
module.name. So here, to refer to the class Student, you need to use the
qualified name Student.Student.
You wouldn't have such a confusion if your module was named students !-)
I have tried to look up what is going on, but I have not found
anything.
you could have done something like this:
import Student
print dir()
print dir(Student)
print type(Student)
del Student
from Student import *
print dir()
print dir(Student)
print type(Student)
Also, reading the doc migh help:
http://www.python.org/doc/2.4.2/tut/node8.html
HTH
--
bruno desthuilliers
python -c print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in '[EMAIL PROTECTED]'.split('@')])
--
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Re: memory error with zipfile module
Take a look at the pywin32 extension, which I believe has some lower level memory allocation and file capabilities that might help you in this situation. If I'm completely wrong, someone please tell me XD. Of course, you could just make the read() a step process, reading, O lets say 8192 bytes at a time (could be bigger if u want), writes them to the new file, and then reads the next portion. This will be slower (not sure how much) than if you had some AMD X2 64 with 3 gigs of ram and could just read the file all at once, but it should work. -- http://mail.python.org/mailman/listinfo/python-list
Re: Tabs are *MISUNDERSTOOD*, *EVIL* AND *STUPID*, end of discussion. (Re: Tabs versus Spaces in Source Code)
On 19 May 2006 07:18:03 GMT in comp.lang.python, Duncan Booth [EMAIL PROTECTED] wrote: [...] My experience of programming with either spaces or tabs has taught me that tabs are evil not for themselves, but simply because no matter how hard you try they always end up being mixed with spaces. That's been my experience as well. At least on projects with more than one programmer. And more than once with single-programmer projects where the programmer changed or updated his editor in the middle... Regards, -=Dave -- Change is inevitable, progress is not. -- http://mail.python.org/mailman/listinfo/python-list
Re: the tostring and XML methods in ElementTree
George Sakkis wrote: Fredrik Lundh wrote: [EMAIL PROTECTED] wrote: I wanted to see what would happen if one used the results of a tostring method as input into the XML method. What I observed is this: a) beforeCtag.text is of type type 'str' b) beforeCtag.text when printed displays: I'm confused c) afterCtag.text is of type type 'unicode' d) afterCtag.text when printed displays: I?m confused the XML file format isn't a Python string serialization format, it's an XML infoset serialization format. as stated in the documentation, ET always uses Unicode strings for text that contain non-ASCII characters. for text that *only* contains ASCII, it may use either Unicode strings or 8-bit strings, depending on the implementation. the behaviour if you're passing in non-ASCII text as 8-bit strings is undefined (which means that you shouldn't do that; it's not portable). I was about to post a similar question when I found this thread. Fredrik, can you explain why this is not portable ? Because there is no such things as a default encoding for 8-bit strings. I'm currently using (a variation of) the workaround below instead of ET.tostring and it works fine for me: def tostring(element, encoding=None): text = element.text if text: if not isinstance(text, basestring): text2 = str(text) elif isinstance(text, str) and encoding: text2 = text.decode(encoding) element.text = text2 s = ET.tostring(element, encoding) element.text = text return s Why isn't this the standard behaviour ? Because it wouldn't work. What if you wanted to serialize a different encoding than that of the strings you put into the .text fields? How is ET supposed to know what encoding your strings have? And how should it know that you didn't happily mix various different byte encodings in your strings? Use unicode, that works *and* is portable. Stefan -- http://mail.python.org/mailman/listinfo/python-list
Re: [OT] noob import question
Brian Blazer wrote:
ot
please, dont top-post, and edit out irrelevant material
/ot
You are right, I do come from a Java background.
Then you may want to read this:
http://dirtsimple.org/2004/12/python-is-not-java.html
HTH
--
bruno desthuilliers
python -c print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in '[EMAIL PROTECTED]'.split('@')])
--
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