OOPS concept
Hi all, Is there any good step by step online tutorial on OOPS concepts in python ? i have checked some on the python.org.__doc__ page but couldnt make much sense. especially i need help on newstyle classes. regards, KM -- http://mail.python.org/mailman/listinfo/python-list
Re: Py2Exe security
I suggest You to use base 64 encoded strings
something like
password = 'aGlkZGVuX3Bhc3N3b3Jk\n'
password = pasword.decode("base64")
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How To Reply
I get a digest several times a day. When I wish to respond to an item I must cut and paste the item and the subject line. Is there something to click on for a simple reply? Using an old mozilla mail. Thanks -- http://mail.python.org/mailman/listinfo/python-list
Creating Files
I know how to open a system file with Python, but is there some way to create one if it's not there? Dan -- http://mail.python.org/mailman/listinfo/python-list
Re: Mod_python
On 3 May 2005 19:22:52 -0700, "Gensek" <[EMAIL PROTECTED]> wrote: >I want to use mod_python, but I'm having trouble. Here's what I have in >my config: I've been using cherrypy (cherrypy.org) instead of apache with mod_python. In a lot of cases, apache is overkill. With cherrypy you can build a web application with a built in web server. It might be worth a look, it's reasonably easy to use. Dan -- http://mail.python.org/mailman/listinfo/python-list
Re: OOPS concept
Try this online book, it may help, the url is: http://www.byteofpython.info > Hi all, > > Is there any good step by step online tutorial on OOPS concepts in python ? > i have checked some on the python.org.__doc__ page but couldnt make much sense. especially i need help on newstyle classes. > > regards, > KM -- http://mail.python.org/mailman/listinfo/python-list
Re: wxpython on cygwin for drPython - ImportError: No module named _core_
I install the original python(www.python.org), it works with wxpython and DrPython very very well. But your case seem to be due to DrPython is not programed for Cygwin. You should read through the system requirement of DrPython. As remember, it stated the www.python.org only ( ; > Hi, > > Did someone installed and used successfully drPython on Cygwin? The > installation requires > wxpython. I tried many different alternatives (source, binary, etc) but so > far the best I get is the following. > -- http://mail.python.org/mailman/listinfo/python-list
Re: PHPParser pod Zope
George Sakkis wrote: > Bruno Desthuilliers wrote: > >>JZ a Ãcrit : >> >>>Probuje zainstalowac modul php pod zope i tam napisali dziwna rzecz > > ze > >>>potrzebuje "PHP CGI program" a nie PHP CLI. Kompilacja php 5.0.4 > > pod > >>>linuksem daje mi w wyniku mod_php + 5 plikow binarnych: pear, php, >>>php-config, phpextdist, phpsize. Zas lektura skryptu do zope jest > > nizbyt > >>>jasna. Napisali: >>> >> >>(snip) >>DÃsolÃ, ce groupe est anglophone, il serait donc trÃs probablement > > >>prÃfÃrable (en tous cas pour toi, et si bien sÃr tu espÃres une > > rÃponse, > >>mais sinon je ne vois pas l'intÃrÃt de poster ici...) de nous > > renvoyer > >>Ãa en anglais dans le texte !-) >> >>I-too-can-speak-weird-foreign-languages-ly'yrs >>Bruno > > > ÎÏÎ Î ÎÏÏÏÎÎÏÎ ÎÎÏÎÏÏÎÏÎ ÏÎÏÎÎ ÏÎ > ÎÎÏÎÎÎÏ ÏÏ, Î ÎÎÎ ÎÎ ÏÎÏÎÎ > ÎÏÏÏ Î ÎÏÏ Î ÎÏÎÎÏ ÎÏ > ÎÏÎÏÎÎÎÏ ÏÏÎ ÎÎÏÏÎ... > > If-this-is-all-greek-to-you-you're-right-ly'yrs > George I don't find this two replies funy :-(. I think it is impolite to make fun of the OP. You could say: "The official language is english" or something like that. And if somebody knows the language he speaks, then a pointer to an appropiate list would be usefull. Best regards, Josef -- http://mail.python.org/mailman/listinfo/python-list
Re: PHPParser pod Zope
Josef Meile wrote: [Non-English/non-Polish answers to a post in Polish] > I don't find this two replies funy :-(. I think it is impolite to make > fun of the OP. You could say: "The official language is english" or > something like that. And if somebody knows the language he speaks, then > a pointer to an appropiate list would be usefull. Relax. The original message was also posted to pl.comp.lang.python, and it seems this was rather a mistake than helplessness. Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: file parsing/watching + qt
> this is a Qt app. app should watch for changes in /var/log/isdn.log and > on file change (like new line was added to isdn.log) it should activate > event in my app. > > i'm trying to fetch last line in file whenever isdnlog logs something > so that i can parse that line for a number and store it somewhere else, > is there a standard solution for this? > > i'm using python2.3 on linux with PyQt3. This is UNIX/Linux specific, but one way would be to use QProcess to run "tail -f /var/log/isdn.log" and connect the readyReadStdout() signal to the Python callable that will handle the line. Phil -- http://mail.python.org/mailman/listinfo/python-list
Re: PHPParser pod Zope
George Sakkis wrote: > ÎÏÎ Î ÎÏÏÏÎÎÏÎ ÎÎÏÎÏÏÎÏÎ ÏÎÏÎÎ ÏÎ > ÎÎÏÎÎÎÏ ÏÏ, Î ÎÎÎ ÎÎ ÏÎÏÎÎ > ÎÏÏÏ Î ÎÏÏ Î ÎÏÎÎÏ ÎÏ > ÎÏÎÏÎÎÎÏ ÏÏÎ ÎÎÏÏÎ... Yeah, spreading that ole SCO source code again... Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: Creating Files
Dan wrote:
>
> I know how to open a system file with Python, but is there some way to
> create one if it's not there?
As in any other language I know : just open it in write mode !-)
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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: PHPParser pod Zope
Peter Otten wrote: > Josef Meile wrote: > > [Non-English/non-Polish answers to a post in Polish] > >>I don't find this two replies funy :-(. I think it is impolite to make >>fun of the OP. You could say: "The official language is english" or >>something like that. And if somebody knows the language he speaks, then >>a pointer to an appropiate list would be usefull. As far as I know, there is no rule that you have to use english in this forum. But it is a lot easier to get answers if you do. -- hilsen/regards Max M, Denmark http://www.mxm.dk/ IT's Mad Science -- http://mail.python.org/mailman/listinfo/python-list
Re: How to write this regular expression?
This newsgroup is in general very helpful, but there are some exceptions; one of them is when the problem appears blatantly to be a homework. Perhaps if you showed that you worked on it and made some progress, but it's not quite right, someone may help you. George -- http://mail.python.org/mailman/listinfo/python-list
Re: PHPParser pod Zope
Josef Meile wrote:
(snip)
>
> I don't find this two replies funy :-(. I think it is impolite to make
> fun of the OP.
My intent was not to make fun *of* the OP. Now I'm willing to admit that
my answer may not be as (kindly) funny as intended, and so I hope the OP
has a better sens of humor than you and me !-)
--
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python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in '[EMAIL PROTECTED]'.split('@')])"
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_RE: Mod_python
Gensek wrote: > > I want to use mod_python, but I'm having trouble. Here's what I have in > my config: > > LoadModule python_module /usr/local/apache2/modules/mod_python.so > > > AddHandler mod_python .py > PythonHandler mptest > PythonDebug On > My guess is that you need to add an Alias directive: Alias /python /usr/local/apache2/htdocs/python Otherwise, when you try the following URL... > http://localhost/python/mptest.py ...Apache/mod_python doesn't know where to find the modules/files in the filesystem corresponding to the "Web path" /python. Apologies if you've already done this but didn't mention it. [...] > Is there any worthwhile alternative to modpython? I find it rather > troublesome. There are certainly a number of different options, and it depends on how much you want to use the mod_python style of programming as to which of those options you want to evaluate. If you like Web programming frameworks using the "publisher style" - that is, where you write Python functions and classes which correspond to names in the URL, as in the example here... http://www.modpython.org/live/current/doc-html/tut-pub.html ...then you might want to consider CherryPy, Quixote and Twisted Web (amongst others). If you don't care about (or don't care for) Web programming frameworks using that style, but like a more "servlet style" approach or mod_python's "handler style", as in the example here... http://www.modpython.org/live/current/doc-html/inst-testing.html ...then there's jonpy, Snakelets and Webware (amongst others). I'm a bit biased when it comes to recommending frameworks, since I always have to mention WebStack which favours a handler/servlet style rather than the publisher style, although you can obviously build publishers on top of it, and there are some helper classes included for such purposes. However, you'll also want to consider how your application produces its Web pages and whether you'll want to access databases really easily or not - some frameworks attempt to cover those issues as well. WebStack applications can run on Apache (if you can stomach the configuration, which isn't that hard once you've done it a few times) but also on other servers and frameworks (if you'd prefer something a bit more obvious). It has been said that people don't really need this flexibility, but even if you aren't deploying on Zope (or whatever) today, it's surely nice to know that you have the chance at some later point in time without rewriting lots of code. Paul P.S. Start here: http://www.python.org/moin/WebProgramming -- http://mail.python.org/mailman/listinfo/python-list
Re: PHPParser pod Zope
"bruno modulix" <[EMAIL PROTECTED]> wrote: > Josef Meile wrote: > (snip) > > > > I don't find this two replies funy :-(. I think it is impolite to make > > fun of the OP. > > My intent was not to make fun *of* the OP. Now I'm willing to admit that > my answer may not be as (kindly) funny as intended, and so I hope the OP > has a better sens of humor than you and me !-) > or perhaps the OP's sense of humor is irrelevant if he/she cannot read this thread in english :-) George -- http://mail.python.org/mailman/listinfo/python-list
Re: How to write this regular expression?
Does it matter whether it is a homework? Why do you look down upon homework? Everyone can do his homework well without any problems in your logic? It's a problem I met. I tried a lot and I can't work it out, so I came here for help. I saw someone complained that a question is too lengthy, and I saw some questions were complained to be unclear, but I never saw someone waste his time to judge if a question is a homework. If this is natural, I'll pay attention from now on. On 4 May 2005 01:31:48 -0700, George Sakkis <[EMAIL PROTECTED]> wrote: > This newsgroup is in general very helpful, but there are some > exceptions; one of them is when the problem appears blatantly to be a > homework. Perhaps if you showed that you worked on it and made some > progress, but it's not quite right, someone may help you. > > George > > -- > http://mail.python.org/mailman/listinfo/python-list > -- http://mail.python.org/mailman/listinfo/python-list
Re: Creating Files
On Wed, 04 May 2005 10:24:23 +0200, bruno modulix <[EMAIL PROTECTED]> wrote: >As in any other language I know : just open it in write mode !-) Easy when you know how. Thanks -- http://mail.python.org/mailman/listinfo/python-list
Re: twisted jabber and xmlstream
On Tue, 03 May 2005 17:05:46 +, Operation Latte Thunder wrote: > I am playing around with Jabber with Twisted. I can receive messages just > fine, and thats great, however, I am a bit confused about how to actually > _send_ messages. From what I've seen, I need to call send() on the > xmlstream I get when I am auth'd... and thats where I get stuck. Do I > need to create the jabber message documents myself, or are there factory > methods that create message, presence, iq, etc messages for me. you have to create jabber elements by yourself, using the twisted.xish.domish package. > Better yet, does anybody have an example on the web somewhere? you can find some examples in our fatima project, a jabber bot testing client, available at http://www.logilab.org/projects/fatima/0.1 You'll find a jabber.py module in the distribution containing jabber related code. hope that helps -- Sylvain Thénault LOGILAB, Paris (France). http://www.logilab.com http://www.logilab.fr http://www.logilab.org -- http://mail.python.org/mailman/listinfo/python-list
Re: How to write this regular expression?
On Wednesday 04 May 2005 11:34, could ildg wrote:
> Does it matter whether it is a homework?
Yes, it does matter. We're not your CS-class homework monkeys... :-) We're a
forum of Python programmers who aid each other at thinking about solutions,
we don't present solutions (normally), for a beautiful example of this, see
the thread about finding similarities between two wave files...
But, anyway, as an additional hint: the stuff you need to do _can_ be solved
by an RE (the language you're matching is actually regular if you impose
several restrictions), but I'd rather not do it that way. Programming a small
function which splits the string and then does the appropriate checks (by
using int) should be much easier and faster.
And in case you really need an RE, watch this monster (to match a single term
having numerical value >= 40)...
0*(([1-9][0-9]{2,})|([4-9][0-9]))
Matching numbers >= 31 isn't hard too, I leave this as an exercise to the
reader... :-) But beware, I'd guess this regex performs rather poorly with
respect to backtracking on erraneous input such as
"30"...
--- Heiko.
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Better way to do parsing?
Hi all,
I posted the following on the python tutor list 3 days ago ... and
haven't heard a peep from anyone - which is highly unusual on that list.
[Apologies for the slightly longer post due to code
with tests cases included at the end .]
I have created a "severely restricted" environment within with
users can learn the basics of programming in Python.
[note: eval, exec, chr, input, raw_input are not allowed.]
Within that environment, I want to have the user test the five
valid forms that an import statement can have, by attempting to
import a fake module whose name is "useful". Other "import"
statements are disallowed.
1. import useful
2. from useful import *
3. from useful import valid_function1 [, valid_function2, ...]
4. from useful import valid_function as better_named_function
5. import useful as not_so_useful_after_all
As far as I can tell, the following works, but it looks rather
"clunky" to me. My *very limited* experience with the
"re" module may have something to do with this.
Any suggestion would be most welcome.
André
===Here's the code formatted (fingers crossed) to work if cut and
pasted from email =
# test_import.py
import re
isolate_words = re.compile(r'\W+') # used with .split()
# pre-compiled some regular expression with allowable use of "import"
imp_use = re.compile('^import useful', re.MULTILINE)
imp_use_as = re.compile('^import useful as (\w+)', re.MULTILINE)
from_use_imp_star = re.compile('^from useful import \*', re.MULTILINE)
from_use_imp_names = re.compile(
"^from useful import (\w+(,[ ]*\w+)*)",
re.MULTILINE)
from_use_imp_as = re.compile(
"^from useful import (\w+) as (\w+)",
re.MULTILINE)
# In the following, "r" is used so that \b identifies a word boundary,
# and is not interpreted as backslash by Python.
import_misuse = re.compile(r'\bimport\b', re.MULTILINE)
# use to commenting out the valid "import" statements after processed.
comment_from = re.compile('^from ', re.MULTILINE)
comment_import = re.compile('^import ', re.MULTILINE)
# Create a fake module which can be "imported"
right = "turn_right():\n"+\
"turn_left()\n"+\
"turn_left()\n"+\
"turn_left()\n\n"
around = "turn_around():\n"+\
"turn_left()\n"+\
"turn_left()\n\n"
up_east = "climb_up_east():\n"+\
"turn_left()\n"+\
"move()\n"+\
"turn_left()\n"+\
"turn_left()\n"+\
"turn_left()\n\n"
up_west = "climb_up_west():\n"+\
"turn_left()\n"+\
"turn_left()\n"+\
"turn_left()\n"+\
"move()\n"+\
"turn_left()\n\n"
down_west = "climb_down_west():\n"+\
"turn_left()\n"+\
"move()\n"+\
"turn_left()\n"+\
"turn_left()\n"+\
"turn_left()\n\n"
down_east = "climb_down_east():\n"+\
"turn_left()\n"+\
"turn_left()\n"+\
"turn_left()\n"+\
"move()\n"+\
"turn_left()\n\n"
commands = {'turn_right': right, 'turn_around': around,
'climb_up_east': up_east, 'climb_up_west': up_west,
'climb_down_east': down_east, 'climb_down_west': down_west}
#=== end of info on fake module
# The following fonctions are helper functions to
# process the "import" statement:
# they add the appropriate "imported commands"
# before the "import" statement,
# before commenting out (by pre-pending #) the "import" statement line
def import_useful():
added_text = ''
for instruction in commands:
new = "def " + 'useful.' + commands[instruction]
added_text += new
return added_text, True
def from_useful_import_star():
added_text = ''
for instruction in commands:
new = "def " + commands[instruction]
added_text += new
return added_text, True
def import_useful_as(syn):
added_text = ''
for instruction in commands:
new = "def " + syn + '.' + commands[instruction]
added_text += new
return added_text, True
def from_useful_import_names(names):
added_text = ''
for instruction in isolate_words.split(names):
try:
new = "def " + commands[instruction]
except:
print instruction, " not found in module useful"
added_text += new
return added_text, True
def from_useful_import_as(name, syn):
added_text = ''
try:
new = "def " + commands[name].replace(name, syn)
except:
print name, " not found in module useful"
added_text += new
return added_text, True
def process_no_import():
added_text = ''
return added_text, True
# the basic processing function
def process_file(file_text):
if imp_use_as.search(fi
Re: file parsing/watching + qt
On 3 May 2005 22:43:02 -0700, aljosa <[EMAIL PROTECTED]> wrote: > i'm trying to fetch last line in file whenever isdnlog logs something > so that i can parse that line for a number and store it somewhere else, > is there a standard solution for this? > i'm using python2.3 on linux with PyQt3. Use the Python binding to FAM (File Alteration Monitor): http://python-fam.sourceforge.net/ HTH, -- Swaroop C H Blog: http://www.swaroopch.info Book: http://www.byteofpython.info -- http://mail.python.org/mailman/listinfo/python-list
Re: py2exe and library.zip
On 5/3/05, Timothy Smith <[EMAIL PROTECTED]> wrote: > exactly what i just stated, i don't want py2exe to zip up it's > library's, but to put them in a sub dir. > the reason for this, is so that when users login and update from svn, > they only have to download some tiny pyc files, not a great big zip file > with everything in it ( 99% of which never changes) The zip file is a generated artifact. I've always found it a good rule of thumb that you should keep source artifacts in your version control system, not generated artifacts. -- Cheers, Simon B, [EMAIL PROTECTED], http://www.brunningonline.net/simon/blog/ -- http://mail.python.org/mailman/listinfo/python-list
Re: How to write this regular expression?
Op 2005-05-04, could ildg schreef <[EMAIL PROTECTED]>: > Does it matter whether it is a homework? Yes, because if other do your homework for you, you wont have learned anything from it. > Why do you look down upon homework? Who says he does. That he is not willing to do your homework for you, doesn't imply he looks down on it. > Everyone can do his homework well without any problems in your logic? There is difference in asking for help on how to solve a problem yourself and asking for the solution. -- Antoon Pardon -- http://mail.python.org/mailman/listinfo/python-list
Re: py2exe and library.zip
On 5/4/05, Timothy Smith <[EMAIL PROTECTED]> wrote: > Simon Brunning wrote: > >The zip file is a generated artifact. I've always found it a good rule > >of thumb that you should keep source artifacts in your version control > >system, not generated artifacts. > > > > > > > version control systems are used for many purposes. it's just as > important to keep track of your packaged releases and documentation as > it is source code. > its also a very convenient method of keeping people up with the lastest > version. Well, they may be used for many things, but what they are *good* at is what they were designed for. Use them to do a job that they *weren't* designed for, and they don't do so well. The zip file essentially contains the whole system in on lump. Change the system, and naturally your users will have to download the whole lump again. (In my 'day job', I'm a Java web app developer. We keep the source for our systems in SVN, any 3rd party JARs, and our build scripts. We *used* to keep the installable WAR files in there too, but we've stopped doing that now, for this reason amongst others.) > i know i've seen what i'm asking for before, but no one seems to be able > to tell me. Sorry, but I'm not aware that py2exe can do this, or has ever been able to. Again, it's designed to build you a minimum-file-count distributable, and that's what it's good at. -- Cheers, Simon B, [EMAIL PROTECTED], http://www.brunningonline.net/simon/blog/ -- http://mail.python.org/mailman/listinfo/python-list
sha-2 and sha-512 bindings
Hi, is there any python bindings for sha-2 or sha-512? Pycrypto seems to have only sha-1 bindings and I can't see any other package on net... Thanks, -- Lukas "Almad" Linhart [:: http://www.almad.net/ ::] [:: Humans are too complicated to be described with words. ::] [:: PGP/GNUPg key: http://www.almad.net/download/pubkey.asc ::] -- http://mail.python.org/mailman/listinfo/python-list
Re: py2exe and library.zip
Simon Brunning wrote: >On 5/4/05, Timothy Smith <[EMAIL PROTECTED]> wrote: > > >>Simon Brunning wrote: >> >> >>>The zip file is a generated artifact. I've always found it a good rule >>>of thumb that you should keep source artifacts in your version control >>>system, not generated artifacts. >>> >>> >>> >>> >>> >>version control systems are used for many purposes. it's just as >>important to keep track of your packaged releases and documentation as >>it is source code. >>its also a very convenient method of keeping people up with the lastest >>version. >> >> > >Well, they may be used for many things, but what they are *good* at is >what they were designed for. Use them to do a job that they *weren't* >designed for, and they don't do so well. > > > don't do so well how. all it does is keep of files and tracks their revisions. >The zip file essentially contains the whole system in on lump. Change >the system, and naturally your users will have to download the whole >lump again. (In my 'day job', I'm a Java web app developer. We keep >the source for our systems in SVN, any 3rd party JARs, and our build >scripts. We *used* to keep the installable WAR files in there too, but >we've stopped doing that now, for this reason amongst others.) > > but if it was just a dir, when they update from the svn at log in, all they do is download the extra\changed files. much much quicker then downloading a 4 meg uncompressed zip file. there's no technical reason for this not to work that i can see, apart from py2exe's ability/inablity to not use a zip file. > > >>i know i've seen what i'm asking for before, but no one seems to be able >>to tell me. >> >> > >Sorry, but I'm not aware that py2exe can do this, or has ever been >able to. Again, it's designed to build you a minimum-file-count >distributable, and that's what it's good at. > > > -- http://mail.python.org/mailman/listinfo/python-list
Re: Creating Files
Dan wrote:
> On Wed, 04 May 2005 10:24:23 +0200, bruno modulix <[EMAIL PROTECTED]>
> wrote:
>
> >As in any other language I know : just open it in write mode !-)
>
> Easy when you know how.
>
> Thanks
e = file('c:/file.txt', 'w')
By the way, check out the Python tutor service...
http://mail.python.org/mailman/listinfo/tutor
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Re: Regular Expression tools?
This is what you are looking for. http://kodos.sourceforge.net/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Problem with pyXML DOM
Florian Lindner wrote:
>Traceback (most recent call last):
> File "ConfigReader.py", line 40, in ?
>c = ConfigReader(f)
> File "ConfigReader.py", line 32, in __init__
>print sourceNode.getElementsByTagName("filename")[0].nodeValue()
>TypeError: 'NoneType' object is not callable
>
>
This is because nodeValue here is 'None' and 'None()' doesn't make
sense. Looks like you want the thing between and .
This is not a nodeValue, this is nodeValue of firstChild of element
'filename'. So this should work:
print sourceNode.getElementsByTagName("filename")[0].firstChild.nodeValue
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Difference between Python CGI applications and Php applications
Dear all, I have a project that is conversion of Php Web applications into Python cgi applications. In my mind compare python-cgi php is better. But I want to know clearly. which one is better. so kindly show me the advantages of python-cgi compare to Php regards PRaba Yahoo! India Matrimony: Find your life partner online Go to: http://yahoo.shaadi.com/india-matrimony -- http://mail.python.org/mailman/listinfo/python-list
Re: twisted jabber and xmlstream
Sylvain Thenault <[EMAIL PROTECTED]> wrote: > you can find some examples in our fatima project, a jabber bot testing > client, available at http://www.logilab.org/projects/fatima/0.1 > You'll find a jabber.py module in the distribution containing jabber > related code. > > hope that helps thanks, I'll check it out! -- [EMAIL PROTECTED] | Roma Invicta! -- http://mail.python.org/mailman/listinfo/python-list
Problems calling cdrdao from python 2.3
Hi all,
I'm trying to use popen3 to call cdrdao from within python, it gets half way
through though then hangs. This is easy to replicate from the interpreter.
import popen2
child = popen2.Popen3('cdrdao disk-info --device 0,0,0'.split(' '), 1, 100)
child.fromchild.read()
The above code works fine, the code below reads half the cd then hangs though.
import popen2
child = popen2.Popen3('cdrdao read-cd --device 0,0,0 testfile'.split(' '), 1,
100)
child.fromchild.read()
If I close python, it seems to read in some more of the cd, but doesn't finish
properly since no toc file is written.
Any help appreciated.
Jeb
PS: Please cc me as I'm not on the list
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Re: py2exe and library.zip
Timothy Smith wrote: > Peter Hansen wrote: >> Anything's possible. Maybe you could explain what you're actually >> trying to accomplish (or the reasons) so we can better understand >> where you're going with this... >> > exactly what i just stated, i don't want py2exe to zip up it's > library's, but to put them in a sub dir. > the reason for this, is so that when users login and update from svn, > they only have to download some tiny pyc files, not a great big zip file > with everything in it ( 99% of which never changes) More detail on this version control thing would probably help. (Things like that are why I asked fo more background... "exactly what I stated" isn't as useful as something like (for example) "I want my app users to use Subversion to retrieve updates to the application without having to download a big zip file".) Do you know that Subversion has (as I understand it) a fairly intelligent binary file comparison routine, and it will (again, as I understand it) not transmit the entire contents of the zip file but would actually send only the portions that have changed? At least, that's if the file isn't compressed in some way that prevents this algorithm from working well. (Note to self: check if zip files that can be in sys.path can be compressed, and if py2exe compresses them.) Anyway, while this sort of thing isn't directly supported (probably since almost nobody would want to do it, for reasons similar to what Simon has explained), you should be able to work it out yourself. The .exe produced by py2exe contains a "stub" executable that basically sets sys.path to point to the .zip file, then runs the main .py which has been integrated into the .exe file (not even compiled to a .pyc, just like normal). If you modify your main .py to adjust sys.path to point to an external subdirectory, you should be able to leave .py files (or .pyc files) there and use svn to update them. I'll leave it as an exercise for the reader (mainly because I don't know how to do it offhand) what you should do to prevent py2exe from putting all your files in its zip. It should probably still put the standard library modules there, since otherwise you'd have little reason to be using py2exe in the first place... -Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: How to write this regular expression?
could ildg wrote: > I need a regular expression to check if a string matches it. Why do you think you need a regular expression? If another approach that involved no regular expressions worked much better, would you reject it for some reason? -Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: How To Reply
phil wrote: > I get a digest several times a day. > When I wish to respond to an item I must > cut and paste the item and the subject line. > Is there something to click on for a simple reply? > Using an old mozilla mail. You are forced to cut and paste if you want to get the messages in a digest. I doubt any mail program has been designed to know how to do anything smarter, and I'm sure "old mozilla" wasn't. Either accept the hard way, or stop using the "digest" approach. (Please try not to use the Python list for basic questions about "how do I use my computer". If everyone did that, this place would be a mess and your digests would be ten times larger. Thanks.) -Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: Problem with pyXML DOM
Maniac wrote:
> Florian Lindner wrote:
>
>>Traceback (most recent call last):
>> File "ConfigReader.py", line 40, in ?
>>c = ConfigReader(f)
>> File "ConfigReader.py", line 32, in __init__
>>print sourceNode.getElementsByTagName("filename")[0].nodeValue()
>>TypeError: 'NoneType' object is not callable
>>
>>
> This is because nodeValue here is 'None' and 'None()' doesn't make
> sense. Looks like you want the thing between and .
> This is not a nodeValue, this is nodeValue of firstChild of element
> 'filename'. So this should work:
>
> print sourceNode.getElementsByTagName("filename")[0].firstChild.nodeValue
Ok, works perfect. Thanks!
But I don't really understand the logic:
given I have the node A
path
A.firstChild.nodeValue == path
How would the second child of A look like? (ok, None in this case) How would
a XML fragment look like that has a second child?
What would be the nodeValue of A?
for me a child of a node is something like
Thanks,
Florian
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Re: Regular Expression tools?
Lee Cullens wrote: > Been here before, but can't remember what I used and anyway that was a > PC platform. > > So, if you use a Regular Expression tool (PCRE standard) for Python > programming and your development platform is Mac OS X, would you please > help narrow down the search for me. All I seem to be finding are other > platforms and/or not standalone. Maybe you are looking for RegexPlor: http://python.net/~gherman/RegexPlor.html Kent -- http://mail.python.org/mailman/listinfo/python-list
Re: Form and Database
v wrote:
> Please help. I'm new with Python.
> Using Boa (or Pythoncard) and pysqlite, how can I read/write from/to
> database, thanks
First learn how to read/write data from your db (without any gui stuff).
Then learn how to use your gui (without any db stuff). Then make the two
working together, and you're done !-)
--
bruno desthuilliers
ruby -e "print '[EMAIL PROTECTED]'.split('@').collect{|p|
p.split('.').collect{|w| w.reverse}.join('.')}.join('@')"
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in '[EMAIL PROTECTED]'.split('@')])"
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Re: Regular Expression tools?
Tim Henderson: > I am not quite sure what you want. However if you are looking for > Python's regular expression module it is the re module. Just go to > interactive help and view the api for it. Thanks Tim, I found RegexPlor - not as full as I was thinking of, but it does the job. Lee C -- http://mail.python.org/mailman/listinfo/python-list
Re: Problem with pyXML DOM
Florian Lindner wrote: >But I don't really understand the logic: > >given I have the node A > >path > >A.firstChild.nodeValue == path > >How would the second child of A look like? (ok, None in this case) > Yes. It's actually required by DOM standard: NodeList (which is returned from getElementsByTagName) should return 'null' (None in Python) on unknown index: http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-844377136 > How would >a XML fragment look like that has a second child? > > Like this for example: or like this: I'm a text child node >What would be the nodeValue of A? > > It's not related to children. There are several types of nodes: documents, elements, text, comments, processing instructions (things in )... Their nodeValue depends on their nature. http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-844377136 >for me a child of a node is something like > > > > > > > Almost :-). Here filename has actually 5 nodes: 1. text node '\n ' 2. element node 'child' 3. text node '\n ' 4. element node 'child' 5. text node '\n' In other words: in DOM whitespace counts. -- http://mail.python.org/mailman/listinfo/python-list
Re: py2exe and library.zip
Peter Hansen wrote: >Timothy Smith wrote: > > >>Peter Hansen wrote: >> >> >>>Anything's possible. Maybe you could explain what you're actually >>>trying to accomplish (or the reasons) so we can better understand >>>where you're going with this... >>> >>> >>> >>exactly what i just stated, i don't want py2exe to zip up it's >>library's, but to put them in a sub dir. >>the reason for this, is so that when users login and update from svn, >>they only have to download some tiny pyc files, not a great big zip file >>with everything in it ( 99% of which never changes) >> >> > >More detail on this version control thing would probably help. (Things >like that are why I asked fo more background... "exactly what I stated" >isn't as useful as something like (for example) "I want my app users to >use Subversion to retrieve updates to the application without having to >download a big zip file".) > >Do you know that Subversion has (as I understand it) a fairly >intelligent binary file comparison routine, and it will (again, as I >understand it) not transmit the entire contents of the zip file but >would actually send only the portions that have changed? At least, >that's if the file isn't compressed in some way that prevents this >algorithm from working well. (Note to self: check if zip files that can >be in sys.path can be compressed, and if py2exe compresses them.) > >Anyway, while this sort of thing isn't directly supported (probably >since almost nobody would want to do it, for reasons similar to what >Simon has explained), you should be able to work it out yourself. The >.exe produced by py2exe contains a "stub" executable that basically sets > sys.path to point to the .zip file, then runs the main .py which has >been integrated into the .exe file (not even compiled to a .pyc, just >like normal). If you modify your main .py to adjust sys.path to point >to an external subdirectory, you should be able to leave .py files (or >.pyc files) there and use svn to update them. > >I'll leave it as an exercise for the reader (mainly because I don't know >how to do it offhand) what you should do to prevent py2exe from putting >all your files in its zip. It should probably still put the standard >library modules there, since otherwise you'd have little reason to be >using py2exe in the first place... > >-Peter > > ideally i'd love to not to have to use py2exe at all, then they can just update from the stable branch of my svn. the problem with THAT is how to install python, wx,pysvn,reportlab etc etc on their systems with no fuss(py2exe convienently packages all dll's together for me). if you know of a way i can achieve that i'd be your best friend forever. the whole reason i'm going with the svn updating method is there is no user interaction required. even getting users to click a single button to update has proven too much to ask of them :/ the other reason is my particular project gets updated very often, so you can imagine the combination of users resistant to any kind of computer use with an environment requiring frequent updating. i have some other problems to solve before i get to that point, mainly svn related eg. pysvn whinges because files exist in the working directory that it wants to update ( with the same name ), only they aren't under version control. -- http://mail.python.org/mailman/listinfo/python-list
tkinter and threads
Hello, In Tkinter, is it safe to call widget.after(time, callback) from another thread (other than the gui thread)? Thanks, Nir -- http://mail.python.org/mailman/listinfo/python-list
Announcing CherryShell a python shell in your webbrowser
A python interpreter embedded in a cherrypy webserver and controlled by webbrower. Powered by AJAX. Currently only version 0.10 and only works with firefox. http://john.thetrotter.net Also example of using cherrypy with AJAX (jsonrpc) -- http://mail.python.org/mailman/listinfo/python-list
Re: Read / Write image file
so something like, x = sock.recv(1024) while (len(x) > 0): # do stuff x = sock.recv(1024) ?? So what if the client sends 4 bytes, and then sends 8000 bytes? WIll I get the first 4 bytes as a separate msg so to speak? Basically i want to catch each message from the client as a whole. -- http://mail.python.org/mailman/listinfo/python-list
About Encapsulation
Hey folks, I wanna know more about encapsulation in python. Is it fully suported? How can I define the encapsulation statements for methods and attributes? Regards! []'s! -- Adriano Monteiro Marques www.gopython.com.br [EMAIL PROTECTED] I'm FREE... Are you? (PYTHON powered) -- http://mail.python.org/mailman/listinfo/python-list
Problem with pyXML DOM
Hello,
I'm using the PyXML Package.
My XML document looks like that:
/home/florian/visualizer/testdata.csv
print sourceNode.getElementsByTagName("filename")[0]
print sourceNode.getElementsByTagName("filename")[0].nodeValue()
gives:
Traceback (most recent call last):
File "ConfigReader.py", line 40, in ?
c = ConfigReader(f)
File "ConfigReader.py", line 32, in __init__
print sourceNode.getElementsByTagName("filename")[0].nodeValue()
TypeError: 'NoneType' object is not callable
Given only the first call everything seems fine, I have a Node object for
the filename.
But why does the second call fails?
The documentationhttp://pyxml.sourceforge.net/topics/howto/node20.html says:
nodeValue
Value of this node. For some types of node, such as Text nodes, the value is
a string containing a chunk of textual data; for others, such as Text, the
value is just None.
Which I don't really understand? What is differencee between the two text
nodes??
Thanks,
Florian
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Re: How to write this regular expression?
I can tell you that this is not any homework at all, I think it by myself. I like this maillist, it helped me a lot. but some guys as you look weird. On 4 May 2005 10:25:20 GMT, Antoon Pardon <[EMAIL PROTECTED]> wrote: > Op 2005-05-04, could ildg schreef <[EMAIL PROTECTED]>: > > Does it matter whether it is a homework? > > Yes, because if other do your homework for you, you wont > have learned anything from it. > > > Why do you look down upon homework? > > Who says he does. That he is not willing to do your homework > for you, doesn't imply he looks down on it. > > > Everyone can do his homework well without any problems in your logic? > > There is difference in asking for help on how to solve a > problem yourself and asking for the solution. I read the document about re on python tommorow, and when I want to use it to settle a problem, I found it not so easy, so I raise the question here. I didn't say how I thought about it, because I don't want the question to be too long. But a short question doesn't mean that I am too lazy and I didn't even think about it. If you think I'm a kind of person you hate to help, you needn't. > > -- > Antoon Pardon > -- > http://mail.python.org/mailman/listinfo/python-list > -- http://mail.python.org/mailman/listinfo/python-list
Re: How to write this regular expression?
Thank you. I just learned how to use re, so I want to find a way to settle it by using re. I know that split it into pieces will do it quickly. On 5/4/05, Peter Hansen <[EMAIL PROTECTED]> wrote: > could ildg wrote: > > I need a regular expression to check if a string matches it. > > Why do you think you need a regular expression? > > If another approach that involved no regular expressions worked much > better, would you reject it for some reason? > > -Peter > -- > http://mail.python.org/mailman/listinfo/python-list > -- http://mail.python.org/mailman/listinfo/python-list
Re: Read / Write image file
codecraig wrote: > so something like, > > x = sock.recv(1024) > while (len(x) > 0): > # do stuff > x = sock.recv(1024) > > > ?? > > So what if the client sends 4 bytes, and then sends 8000 bytes? WIll I > get the first 4 bytes as a separate msg so to speak? Basically i want > to catch each message from the client as a whole. You cannot guarante *anything* except that (I believe) you will not receive zero bytes from .recv() as long as the socket is open. Those four bytes the client sends: technically they could come as any combination, including four separate one-byte packets (though that is at least highly unlikely, if not actually impossible in practice). The 8000 bytes? Some of them could actually arrive with the four bytes, and they could also be split into many smaller packets, with you having absolutely no say in the matter, and no way to control it. Don't fight the way TCP works: learn to use it the way everyone else does, or better yet: don't reinvent the wheel. Use an existing package that already does all the low-level stuff that you are trying to do and which does it reliably. Twisted, some of the standard library options, or something else. At the very least, look at some existing code to see how complex it has to be to work reliably, or look at a book like the Nutshell book to learn to do it properly. -Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: sha-2 and sha-512 bindings
Almad wrote: > Hi, > > is there any python bindings for sha-2 or sha-512? > > Pycrypto seems to have only sha-1 bindings and I can't see any other package > on net... > > Thanks, On Debian GNU\Linux Testing, Python2.3-crypto contains sha256 hashing. http://packages.debian.org/testing/python/python2.3-crypto -- http://mail.python.org/mailman/listinfo/python-list
Re: xmlrpclib and decoding entity references
yep, I'm using SimpleRPCServer, but something is getting messed up between the receipt of the XML stream and the delivery to my function. The "normal" entity references (like < and &) are handled OK, but the character references are not working. For instance, "André" is received by the server, but it's delivered to the function as "Andr;" I've figured out how to parse through the string to find all the character references and convert them back, but that seems to be causing a ProtocolError. Hopefully someone can lend me a clue; I really don't want to have to switch over to SOAP and end up in WSDL hell. -- http://mail.python.org/mailman/listinfo/python-list
Re: Regular Expression tools?
From: "Terje Johan Abrahamsen" <[EMAIL PROTECTED]> Date: May 4, 2005 6:49:14 AM EDT To: python-list@python.org Subject: Re: Regular Expression tools? This is what you are looking for. http://kodos.sourceforge.net/ I've seen that and it looks great, but I don't have the Trolltech Qt application framework. " Kodos utilizes the PyQt library for it's interface and will run on any platform that Trolltech's Qt application framework is available on (Linux, Unix, Windows, Mac)." From: Kent Johnson <[EMAIL PROTECTED]> Date: May 4, 2005 7:43:43 AM EDT To: python-list@python.org Subject: Re: Regular Expression tools? Lee Cullens wrote: Been here before, but can't remember what I used and anyway that was a PC platform. So, if you use a Regular Expression tool (PCRE standard) for Python programming and your development platform is Mac OS X, would you please help narrow down the search for me. All I seem to be finding are other platforms and/or not standalone. Maybe you are looking for RegexPlor: http://python.net/~gherman/RegexPlor.html Kent Yes, I found that - not quite as full as I was thinking of, but it gets the job done for now. Thanks all, Lee C -- http://mail.python.org/mailman/listinfo/python-list
Re: Difference between Python CGI applications and Php applications
> "Praba" == praba kar <[EMAIL PROTECTED]> writes: Praba> Dear all, Praba> I have a project that is conversion of Php Web applications Praba> into Python cgi applications. In my mind compare You might want to look into mod_python and psp (python server pages) for a more straightforward conversion: http://www.onlamp.com/pub/a/python/2004/02/26/python_server_pages.html -- Ville Vainio http://tinyurl.com/2prnb -- http://mail.python.org/mailman/listinfo/python-list
Re: py2exe and library.zip
In article <[EMAIL PROTECTED]>, Peter Hansen <[EMAIL PROTECTED]> wrote: > [ ... ] (Note to self: check if zip files that can > be in sys.path can be compressed, Yes. > and if py2exe compresses them.) Don't know, but I assume yes. Just -- http://mail.python.org/mailman/listinfo/python-list
Re: About Encapsulation
You mean private, protected, public, that kind of stuff ? They do not exist in Python. Conventionally if you don't want the user of a class to access a method or attribute, you use the prefix _ ; class K(object): _a = 1 def __init__(self, val): self.arg = val self._hidden = 1 def _method(self): pass The _hidden attribute can still be accessed by ... >>> h = K()._hidden ... but hey ! You know you *should* not. It's the "we are all consenting adults" philosophy of programming. By the way, K._method and K._a won't appear in the (py-)doc of the class ... Cheers, SB -- http://mail.python.org/mailman/listinfo/python-list
Re: How To Reply
[Peter Hansen] > You are forced to cut and paste if you want to get the messages in a > digest. I doubt any mail program has been designed to know how to do > anything smarter, Lars Magne Ingebrigtsen's wonderful Gnus (a much boosted, combined news/mail reader, running within or over Emacs) knows about digests. (Moreover, with not so much trickery, it is Python extensible. I vaguely remember having written one or two Python backends for Gnus.) -- François Pinard http://pinard.progiciels-bpi.ca -- http://mail.python.org/mailman/listinfo/python-list
Re: How to write this regular expression?
Personally I'd use groups. -- http://mail.python.org/mailman/listinfo/python-list
Re: control precision for str(obj) output?
Dan Bishop wrote: > Andrew Dalke wrote: > >>Mike Meyer wrote: >> >>>Someone want to tell me the procedure for submitting FAQ entries, > > so I > >>>can do that for this? >> >>You mean more than what already exists at >> > > http://www.python.org/doc/faq/general.html#why-are-floating-point-calculations-so-inaccurate > >>which has a link to an even more detailed chapter in the tutorial at >> http://docs.python.org/tut/node16.html > > > Yes. Those pages explain why repr(0.2) != '0.2', but they don't > explain why str([x]) != '[%s]' % x . > I am new to Python but has experience with other languages. I am quite aware of 'why-are-floating-point-calculations-so-inaccurate'. I would not be surprised if >>> str[0.0002) 0.0002001 >>> str([0.0002]) [0.0002001] It was the difference between str([x]) and '[%s]' % x str(x) that confused me. Bo -- http://mail.python.org/mailman/listinfo/python-list
ANN: Leo 4.3-b1
Leo 4.3 beta 1 is now available at http://sourceforge.net/projects/leo/ Leo 4.3 beta 1 completes all major features of Leo 4.3. There are no known significant bugs. The defining features of Leo 4.3: - 1. Leo now stores options in @settings trees, that is, outlines whose headline is '@settings'. When opening a .leo file, Leo looks for @settings trees not only in the outline being opened but also in various leoSettings.leo files. Users can create arbitrarily complex user options with @settings trees. 2. The Preferences command temporarily replaces the outline pane with an outline showing all the @settings trees in effect. The Preferences command also replaces the body pane with a "settings pane". This settings pane allows you to change the settings selected in the outline pane using standard gui widgets. 3. Leo now stores recent files information in .leoRecentFiles.txt files. 4. Leo's read/write code in leoAtFile.py has been rewritten to support user-defined tangling and untangling. This is a major cleanup of Leo's core. 5. Leo now contains an excellent Plugins Manager plugin. This plugin enables and disables plugins automatically and tells you everything you need to know about each plugin. This plugin also lets you download plugins from Leo's cvs site. 6. You can install third-party extensions in Leo's extensions directory. Leo will attempt to import such extensions from the extensions directory when normal imports fail. The distribution contains Python Mega Widgets in the extensions directory. What people are saying about Leo "Another day, another breakthrough using Leo--now I realize Leo is the best URL bookmark manager there is. No more bookmarks menus or favorites lists inside the browser for me. With the @url directive I can just double click on the URL to open it in my browser. Leo lets me arrange the URLs in a hierarchy (or multiple hierarchies), attach notes to them, save clippings of things I read on the sites. It's sooo much better than anything the browsers have built in and it lets me easily use different browsers on different platforms and different machines (try that with the browsers' built-in bookmark managers)." -- Dan Winkler "I am an amateur photographer. I use plain old 35mm. film for my pictures. Over the weekend, I used Leo to organize my lists of pictures. It is quite helpful--I can have separate nodes for pictures I have enlarged, as well as pictures I have submitted to our local camera club. Thanks!" -- Rich Reis "Cloning is pure genius!... Leo's cloning facility, allows me to create several views on the CFA course material. My main view follows the prescribed study guide. Another view is organized like the textbooks. Yet another gives me a glossary of terms. And when I'm done, I'll have some nice libraries...I can re-use later in other projects." -- Michael Manti More quotes at: http://webpages.charter.net/edreamleo/testimonials.html What makes Leo special? --- - Leo's outlines add a new dimension to programming. - Leo shows you your code and data the way _you_ want to see them. - Leo extends, completes and simplifies literate programming. - Leo's script buttons bring scripts to data. What is Leo? - A programmer's editor, an outlining editor and a flexible browser. - A literate programming tool, compatible with noweb and CWEB. - A data organizer and project manager. Leo provides multiple views of projects within a single outline. - Fully scriptable using Python. Leo saves its files in XML format. - Portable. leo.py is 100% pure Python. - Open Software, distributed under the Python License. Leo requires Python 2.2.1 or above and tcl/tk 8.4 or above. Leo works on Linux, Windows and MacOs X. Links: -- Leo: http://webpages.charter.net/edreamleo/front.html Home: http://sourceforge.net/projects/leo/ Download: http://sourceforge.net/project/showfiles.php?group_id=3458 CVS: http://sourceforge.net/cvs/?group_id=3458 Quotes: http://webpages.charter.net/edreamleo/testimonials.html Edward K. Ream email: [EMAIL PROTECTED] Leo: Literate Editor with Outlines Leo: http://webpages.charter.net/edreamleo/front.html -- http://mail.python.org/mailman/listinfo/python-list
Re: py2exe and library.zip
Timothy Smith <[EMAIL PROTECTED]> writes: > is it possible instead of py2exe putting all library's in a zip file, > to just put them in a sub dir? You can subclass the build_exe command (the extending sample shows how to do this, althoutgh for a different purpose), and copy the files into a sub dir instead of building an archive. You still have to make sure that your exe has this directory on sys.path. Thomas -- http://mail.python.org/mailman/listinfo/python-list
Re: py2exe and library.zip
Just <[EMAIL PROTECTED]> writes: > In article <[EMAIL PROTECTED]>, > Peter Hansen <[EMAIL PROTECTED]> wrote: > >> [ ... ] (Note to self: check if zip files that can >> be in sys.path can be compressed, > > Yes. > >> and if py2exe compresses them.) > > Don't know, but I assume yes. There's an option for that, because it slows down the imports. Thomas -- http://mail.python.org/mailman/listinfo/python-list
Re: How To Reply
On 2005-05-03, phil <[EMAIL PROTECTED]> wrote: > I get a digest several times a day. > When I wish to respond to an item I must > cut and paste the item and the subject line. > Is there something to click on for a simple reply? > Using an old mozilla mail. Instead of accessing the newsgroup through an e-mail gateway, why not use a newsreader and access it directly? It eliminates all the hassles associated with digested mail. I even use gmane.org to access "normal" mailing lists via a newsreader. -- Grant Edwards grante Yow! at FISH-NET-FISH-NET-FISH-NET-FISH-NET-FISH!! visi.com -- http://mail.python.org/mailman/listinfo/python-list
Python FAQ entries (Was: control precision for str(obj) output?)
"Dan Bishop" <[EMAIL PROTECTED]> writes: > Andrew Dalke wrote: >> Mike Meyer wrote: >> > Someone want to tell me the procedure for submitting FAQ entries, > so I >> > can do that for this? >> >> You mean more than what already exists at >> > http://www.python.org/doc/faq/general.html#why-are-floating-point-calculations-so-inaccurate >> >> which has a link to an even more detailed chapter in the tutorial at >> http://docs.python.org/tut/node16.html > > Yes. Those pages explain why repr(0.2) != '0.2', but they don't > explain why str([x]) != '[%s]' % x . Exactly. The point that needs to go in the FAQ is the behavior of str on lists, not floating point representation. The latter needs to be mentioned, but isn't critical. A quick check of the Python site turns up no discussion on submitting new FAQ entries. There are patch submission guidelines, and lots of things related to the mailman FAQ, but nothing on how to submit new entries for the FAQ. Or has the FAQ been supplanted by the wiki at www.python.org/moin, even though there doesn't appear to be a FAQ page? http://www.mired.org/home/mwm/ Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information. -- http://mail.python.org/mailman/listinfo/python-list
Re: How To Reply
François Pinard <[EMAIL PROTECTED]> writes: > [Peter Hansen] > >> You are forced to cut and paste if you want to get the messages in a >> digest. I doubt any mail program has been designed to know how to do >> anything smarter, > > Lars Magne Ingebrigtsen's wonderful Gnus (a much boosted, combined > news/mail reader, running within or over Emacs) knows about digests. So does the emacs VM mail reader. It bursts a digest into a collection of submessages. Unfortunately, digests often lose critical headers, making the reply come out broken in some way. I've not read the python list as a digest, so I don't know if it will have problems or not. http://www.mired.org/home/mwm/ Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information. -- http://mail.python.org/mailman/listinfo/python-list
Re: tkinter and threads
I might be wrong, but my experience is to keep all tkinter calls in the main thread and use queues to have other threads tell the main one what to do. Regards, Philippe Nir Aides wrote: > Hello, > > In Tkinter, is it safe to call widget.after(time, callback) from another > thread (other than the gui thread)? > > Thanks, > Nir -- http://mail.python.org/mailman/listinfo/python-list
Re: Better way to do parsing?
Isn't it a better idea to manipulate the import statement with use of of the 'imp' module to get a restriction on the import statement? -- http://mail.python.org/mailman/listinfo/python-list
SWIG/Python2.4.1: "ImportError: dynamic module does not define init function (initSHIP)"
Hello, I am using SWIG-1.3.24 to make an extension (called SHIP) to Python2.4.1 and then running under IDLE (if that makes any difference) but when I "import SHIP" I get: >>> import SHIP Traceback (most recent call last): File "", line 1, in -toplevel- import SHIP ImportError: dynamic module does not define init function (initSHIP) >>> Indeed, SHIP.py does not define an initSHIP. It does have "import _SHIP" SHIP_wrap.cpp (produced by SWIG) does have init_SHIP (defined to SWIG_init). It seems to me I should not be editing SHIP.py (as made by SWIG) but it does seem to be missing something, or am I? Thanks in advance, Bill PS I gave up trying to use IDLE with a locally compiled debug version of Python - that's for another day (or week), but thanks for the assorted help I was given. -- http://mail.python.org/mailman/listinfo/python-list
Re: empty lists vs empty generators
Jeremy Bowers wrote: > def __init__(self, generator): > self.generator = generator You'll want to use iter(generator) there in order to handle reiterables. -- http://mail.python.org/mailman/listinfo/python-list
A faster method to generate a nested list from a template?
Hi all,
I'm new to Python. I'm trying to create a fast function to do the following:
t = [['a1','a2'],['b1'],['c1'],['d1']]
l = [1,2,3,4,5]
>>> create_nested_list(t,l)
[[1, 2], [3], [4], [5]]
t is some sort of template. This is what I have now:
def create_nested_list(template,l_orig):
'''Uses a template to create a new list
t = [['a1','a2'],['b1'],['c1'],['d1']]
l = [1,2,3,4,5]
>>> create_nested_list(t,l)
[[1, 2], [3], [4], [5]]
'''
tl = map(len, template)
# Input size check
if reduce(lambda x,y: x+y, tl) != len(l_orig):
raise "Wrong input size"
l = l_orig
new_nested_list = []
for x in tl:
q = []
i = 0
while i < x:
q.append(l.pop(0))
i += 1
new_nested_list.append(q)
return new_nested_list
I'd like to know if it is possible to make this faster (using Python magic I
don't know of yet), because this function will be called a lot
('constantly').
Thanks in advance,
Stan.
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Variable option count
Hello, how can I give an arbitrary number of options in a automated way to a function? Example. I've the list A = [ 1 2 3 ... ] Now I want to give this list to a function so that it is the same for function like: f(1, 2, 3, ...) How can I do that? Thanks, Florian -- http://mail.python.org/mailman/listinfo/python-list
Re: Variable option count
On 5/4/05, Florian Lindner <[EMAIL PROTECTED]> wrote: > Hello, > how can I give an arbitrary number of options in a automated way to a > function? > > Example. > > I've the list A = > > [1, 2, 3] > > Now I want to give this list to a function so that it is the same for > function like: > > f(1, 2, 3) > > How can I do that? f(*A) -- Cheers, Simon B, [EMAIL PROTECTED], http://www.brunningonline.net/simon/blog/ -- http://mail.python.org/mailman/listinfo/python-list
Re: A faster method to generate a nested list from a template?
Are there only a few, unchanging templates? If so, (dynamiclly) create
a function for each template. This will be nearly the fastest you can
go in Python, excluding the time to create and byte-compile the nesting
function.
# This code is in the public domain
def make_nesting_expression(l, s):
result = []
for c in l:
if isinstance(c, list):
sub, s = make_nesting_expression(c, s)
result.append(sub)
else:
result.append("l[%d]" % s)
s += 1
print "make_nesting_expression", l, result
return "[" + ",".join(result) + "]", s
def make_nesting_function(l):
return eval("lambda l: %s" % make_nesting_expression(l, 0)[0])
t = [['a1','a2'],['b1'],['c1'],['d1']]
l = [1, 2, 3, 4, 5]
f = make_nesting_function(t)
print f(l)
Jeff
pgpntDRR9zF1S.pgp
Description: PGP signature
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descriptor dilemma
Hello, I was wondering if someone could explain the following situation to me please: >>> class C(object): def f(self): pass >>> c = C() >>> c.f > >>> C.__dict__['f'].__get__(c,C) > >>> c.f == C.__dict__['f'].__get__(c,C) True >>> c.f is C.__dict__['f'].__get__(c,C) False Why do c.f and C.__dict__['f'].__get__(c,C) compare as equal under == but not under *is* ? Thanks, John -- http://mail.python.org/mailman/listinfo/python-list
Re: Better way to do parsing?
On Wed, 04 May 2005 07:13:22 -0300, =?ISO-8859-1?Q?Andr=E9_Roberge?= <[EMAIL PROTECTED]> wrote: >Hi all, > >I posted the following on the python tutor list 3 days ago ... and >haven't heard a peep from anyone - which is highly unusual on that list. > >[Apologies for the slightly longer post due to code >with tests cases included at the end .] > >I have created a "severely restricted" environment within with >users can learn the basics of programming in Python. > >[note: eval, exec, chr, input, raw_input are not allowed.] > >Within that environment, I want to have the user test the five >valid forms that an import statement can have, by attempting to >import a fake module whose name is "useful". Other "import" >statements are disallowed. > >1. import useful >2. from useful import * >3. from useful import valid_function1 [, valid_function2, ...] >4. from useful import valid_function as better_named_function >5. import useful as not_so_useful_after_all > >As far as I can tell, the following works, but it looks rather >"clunky" to me. My *very limited* experience with the >"re" module may have something to do with this. > >Any suggestion would be most welcome. > I don't in any way want to discourage your enthusiastic pursuit of your goal, but I suspect you might have more fun with another approach, unless you really want to learn about the limitations of regexes first ;-) (Don't get me wrong, regexes are great for what they do best). I.e., if you want to parse python, there are modules that will help you a lot more than just re will. If you want to validate source according to your own rules before compiling, you could walk the ast and raise exceptions where your rules are violated. Or if you want to emulate excution as you walk the tree, you can do that too. Either way, this post of Michael Spencer's ought to give you food for thought: http://mail.python.org/pipermail/python-list/2005-March/270760.html Also for more general (not just python syntax) parssing the pyparsing program referenced in the followon post looks very nice, though I have not tried it. http://pyparsing.sourceforge.net/ Regards, Bengt Richter -- http://mail.python.org/mailman/listinfo/python-list
Re: Python & SQLite
dcrespo wrote: > Does PySQLite run on Linux? Yes! >From my Gentoo laptop: andyvaio root # emerge -av pysqlite These are the packages that I would merge, in order: Calculating dependencies ...done! [ebuild R ] dev-python/pysqlite-0.5.1 0 kB Total size of downloads: 0 kB Do you want me to merge these packages? [Yes/No] Cheers, Andy -- http://mail.python.org/mailman/listinfo/python-list
Re: Better way to do parsing?
You asked for parsing, here's some pyparsing. Download pyparsing at
http://pyparsing.sourceforge.net.
-- Paul
from pyparsing import *
IMPORT = Keyword("import")
AS = Keyword("as")
FROM = Keyword("from")
ident = Word(alphas+"_", alphanums+"_")
import1 = Group( IMPORT + ident + Optional( AS + ident ) )
import2 = Group( FROM + ident + IMPORT +
("*" | delimitedList( ident + Optional( AS + ident ) ) ) )
imports = import1 | import2
comment = "#" + restOfLine
imports.ignore(comment)
test = """
import useful
from useful import *
from useful import turn_around, turn_right, climb_up_east
import useful as use
from useful import turn_right
from useful import turn_right
from useful import turn_right as vire_a_droite, turn_left as
drehen_nach_links
import sys
from sys import *
# import in comment
# import sys
import useful
import sys
"""
results = OneOrMore( imports ).parseString( test )
for imp in results:
print imp
===
prints:
['import', 'useful']
['from', 'useful', 'import', '*']
['from', 'useful', 'import', 'turn_around', 'turn_right',
'climb_up_east']
['import', 'useful', 'as', 'use']
['from', 'useful', 'import', 'turn_right']
['from', 'useful', 'import', 'turn_right']
['from', 'useful', 'import', 'turn_right', 'as', 'vire_a_droite',
'turn_left', 'as', 'drehen_nach_links']
['import', 'sys']
['from', 'sys', 'import', '*']
['import', 'useful']
['import', 'sys']
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ANN: CherryPy-2.0-final released
Hello everyone, I am happy to announce the first stable release of CherryPy-2. CherryPy-2 is a pythonic, object-oriented web development framework. CherryPy-2 is a redesign of CherryPy-1 (the unpythonic features have been removed): no more compilation step, pure python source code (no more "CherryClass"). Here is a sample Hello, World in CherryPy-2: # from cherrypy import cpg # class HelloWorld: # @cpg.expose # def index(self): # return "Hello world!" # cpg.root = HelloWorld() # cpg.server.start() Main properties: - this code starts a multi-threaded HTTP server that dispatches requests to methods - requests like "http://domain/dir/page?arg1=val1&arg2=val2"; are mapped to "dir.page(arg1='val1', arg2='val2')" - CherryPy also supports "positional" arguments in URLs like http://domain/book/science/9 - requests are mapped to an object tree that is "mounted" on cpg.root (for instance: "cpg.root.user", "cpg.root.user.remi", ...) - method must be explicitely exposed with a decorator "@cpg.expose" (or "index.exposed = True" for Python-2.3) - methods can return a generator instead of a string (useful when generating big pages) Here is a non-exhaustive list of CherryPy-2 features: multi-threaded HTTP server, XML-RPC server, sessions, form handling, authentication, unicode support, gzip-compression, virtual hosting, WSGI adapter The design of CherryPy-2 allows to easily write/use pluggable "filters" or "modules": - filters perform operations on the request/response such as gzip-compression or string encoding - modules are web applications (like a blog or a web forum) than can be easily "mounted" anywhere you want in your website CherryPy-2 is already used in production by many sites and is supported by an active community. Remi. http://www.cherrypy.org -- http://mail.python.org/mailman/listinfo/python-list
Re: xmlrpclib and decoding entity references
Here is the solution. Incidentally, the client is Cold Fusion.
import re
import logging
import logging.config
import os
import SimpleXMLRPCServer
logging.config.fileConfig("logging.ini")
class
LoggingXMLRPCRequestHandler(SimpleXMLRPCServer.CGIXMLRPCRequestHandler):
def __dereference(self, request_text):
entityRe = re.compile("((?P&#x)(?P..)(?P;))")
for m in re.finditer(entityRe, request_text):
hexref = int(m.group(3),16)
charref = chr(hexref)
request_text = request_text.replace(m.group(1), charref)
return request_text
#---
def handle_xmlrpc(self, request_text):
logger = logging.getLogger()
#logger.debug("")
#logger.debug(request_text)
try:
#logger.debug("-")
request_text = self.__dereference(request_text)
#logger.debug(request_text)
request_text = request_text.decode("latin-1").encode('utf-8')
#logger.debug("")
except Exception, e:
logger.error(request_text)
logger.error("had a problem dereferencing")
logger.error(e)
SimpleXMLRPCServer.CGIXMLRPCRequestHandler.handle_xmlrpc(self,
request_text)
class Foo:
def settings(self):
return os.environ
def echo(self, something):
logger = logging.getLogger()
logger.debug(something)
return something
def greeting(self, name):
return "hello, " + name
# these are used to run as a CGI
handler = LoggingXMLRPCRequestHandler()
handler.register_instance(Foo())
handler.handle_request()
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New Zope Italia Association (AZI)
We are pleased to announce the foundation of the Zope Italia Association (AZI - Associazione Zope Italia). It was created by a couple of mailing list users in the last months (since march). Main goals are to manage the Zope.IT community activities, to contribute to the diffusion and to improve the visibility of Zope, Plone and Python in Italy. Further details can be found at http://zope.it. -- Stefano Noferi Zope Italia Association -- http://mail.python.org/mailman/listinfo/python-list
Q: The `print' statement over Unicode
Hi, people. I hope someone would like to enlighten me.
For any application handling Unicode internally, I'm usually careful
at properly converting those Unicode strings into 8-bit strings before
writing them out.
However, this morning, I mistakenly forgot to do so before using one
Unicode string (containing a non-ASCII character) as an argument to
the `print' statement, and I did _not_ get an error. This is rather
surprising to me. I reread the section of the Python reference manual
(version 2.3.4, this machine uses 2.3.3 currently), and it does not say
anything about a special processing for Unicode strings.
In my understanding, when `print' is given an argument which is not
already a string (I read: 8-bit string), it first gets converted into
a string (I read: calling __str__). But if I call `str()' explicitly,
_then_ I get an error as expected. The question is, why is there no
error if I do not call `str()' explicity?
For example, given file `question.py' with this contents:
# -*- coding: UTF-8 -*-
texte = unicode("Fran\xe7ois", 'latin1')
print type(texte), repr(texte), texte
print type(texte), repr(texte), str(texte)
doing `python question.py' yields:
u'Fran\xe7ois' François
u'Fran\xe7ois'
Traceback (most recent call last):
File "question.py", line 4, in ?
print type(texte), repr(texte), str(texte)
UnicodeEncodeError: 'ascii' codec can't encode character u'\xe7' \
in position 4: ordinal not in range(128)
(last line wrapped for legibility).
So (trying to be crystal clear), why is the first `print' working over
its third argument, but not the second? How does `print' convert that
Unicode string to a 8-bit string for output, if not through `str()'?
What is missing to the documentation, or to my way of understanding it?
--
François Pinard http://pinard.progiciels-bpi.ca
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Re: Read / Write image file
phil wrote:
>>
>> By the way, what is 'rb' and 'wb' ?
>>
>
> Read Binary, Write Binary
> In Win32 the default is text mode which
> will screw up binary files
>
In fact, this is not just for Windows. Linux / Unix is unusual
using the originally non-standards-conforming line feed ('\n')
character as a line separator. Various different OS's define
text files in different ways. The distinction between binary
and text is a C standards thing, not a Windows goof. Heaven
knows I dislike a lot of what Microsoft has done in the way
of interfering with standard ways of doing things, but their
end-of-line convention is not one of those things. The use
of the extension ".doc" was such a deliberate violation of
standards. Note older Apple files used '\r' as a line separator,
Tenex used \r\n, or \037, some systems used a line count (leaving
no end-of-line string), and so on
It is a good idea to provide an indication of whether a file
is binary or text to the file system; the clue could guide
compression information.
-Scott David Daniels
[EMAIL PROTECTED]
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Re: Q: The `print' statement over Unicode
François Pinard <[EMAIL PROTECTED]> writes:
> Hi, people. I hope someone would like to enlighten me.
>
> For any application handling Unicode internally, I'm usually careful
> at properly converting those Unicode strings into 8-bit strings before
> writing them out.
>
> However, this morning, I mistakenly forgot to do so before using one
> Unicode string (containing a non-ASCII character) as an argument to
> the `print' statement, and I did _not_ get an error. This is rather
> surprising to me. I reread the section of the Python reference manual
> (version 2.3.4, this machine uses 2.3.3 currently), and it does not say
> anything about a special processing for Unicode strings.
>
> In my understanding, when `print' is given an argument which is not
> already a string (I read: 8-bit string), it first gets converted into
> a string (I read: calling __str__). But if I call `str()' explicitly,
> _then_ I get an error as expected. The question is, why is there no
> error if I do not call `str()' explicity?
>
> For example, given file `question.py' with this contents:
>
># -*- coding: UTF-8 -*-
>texte = unicode("Fran\xe7ois", 'latin1')
>print type(texte), repr(texte), texte
>print type(texte), repr(texte), str(texte)
>
> doing `python question.py' yields:
>
> u'Fran\xe7ois' François
> u'Fran\xe7ois'
>Traceback (most recent call last):
> File "question.py", line 4, in ?
>print type(texte), repr(texte), str(texte)
>UnicodeEncodeError: 'ascii' codec can't encode character u'\xe7' \
> in position 4: ordinal not in range(128)
>
> (last line wrapped for legibility).
>
> So (trying to be crystal clear), why is the first `print' working over
> its third argument, but not the second? How does `print' convert that
> Unicode string to a 8-bit string for output, if not through `str()'?
> What is missing to the documentation, or to my way of understanding it?
AFAIK, print uses sys.stdout.encoding to encode the unicode string.
Thomas
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Re: Read / Write image file REC SEP
>> >>So what if the client sends 4 bytes, and then sends 8000 bytes? WIll I >>get the first 4 bytes as a separate msg so to speak? Basically i want >>to catch each message from the client as a whole. >> IF YOU WANT SEPARATE MESSAGES: Modify the client to send an end of record, then: On Server: datasep = '' # or whatever you like datal = [] seversocket.settimeout(5.0) # or 0(infinite) or something reasonable while 1: try: data = serversocket.recv(BUFFERSIZE) # fails on timeout if not data: break datal.append(data) except: break msglist = datal.split(datasep) # a list of messages -- http://mail.python.org/mailman/listinfo/python-list
Re: xmlrpclib and decoding entity references
On 3 May 2005 08:07:06 -0700, "Chris Curvey" <[EMAIL PROTECTED]> wrote: >I'm writing an XMLRPC server, which is receiving a request (from a >non-Python client) that looks like this (formatted for legibility): > > > >echo > > > >Le Martyre de Saint André
avec inscription >'Le Dominiquain.' et 'Le tableau fait par le dominicain, >d'après son dessein à... est à Rome, à >l'église Saint André della Valle' sur le >cadre
craie noire, plume et encre brune, lavis brun >rehaussé de blanc sur papier brun
190 x 228 mm. (7 1/2 x >9 in.) > > > > > >But when my "echo" method is invoked, the value of the string is: > >Le Martyre de Saint Andr; avec inscription 'Le Dominiquain.' et >'Le tableau fait par le dominicain, d'apr:s son dessein 2... est 2 >Rome, 2 l';glise Saint Andr; della Valle' sur le cadre craie noire, >plume et encre brune, lavis brun rehauss; de blanc sur papier brun >190 x 228 mm. (7 1/2 x 9 in.) > >Can anyone give me a lead on how to convert the entity references into >something that will make it through to my method call? > I haven't used XMLRPC but superficially this looks like a quoting and/or encoding problem. IOW, your "request" is XML, and the ... part is also XML which is part of the whole, not encapsulated in e.g. (which would tell an XML parser to suspend markup interpretation of ...stuff...). So IWT you would at least need the ... content to be converted to unicode to preserve all the represented characters. It wouldn't surprise me if the whole request is routinely converted to unicode, and the "value" you are showing above is a result of converting from unicode to an encoding that can't represent everything, and maybe just drops conversion errors. What do you get if you print repr(value)? (assuming value is passed to you echo method) If it is a unicode string, you will just have to choose an appropriate value.encode('appropriate') from available codecs. If it looks like e.g., a utf-8 encoding of unicode, you could try value.decode('utf-8').encode('appropriate') I'm just guessing here. But something is interpreting the basic XML, since
is being converted to . Seems not unlikely that the rest are also being converted, and to unicode. You just wouldn't notice a glitch when unicode is converted to any usual western text encoding. OTOH, if the intent (which I doubt) of the non-python client were to pass through a block of pre-formatted XML as such (possibly for direct pasting into e.g. web page XHTML?) then a way to avoid escaping every & and < would be to use CDATA to encapsulate it. That would have to be fixed on that end. Regards, Bengt Richter -- http://mail.python.org/mailman/listinfo/python-list
postgresql plpython bug
Hello! create or replace function trigger_keywords_maintain() returns trigger as $$ return 'MODIFY' $$ language plpythonu; update table set id = id where id = 7; ERROR: invalid input syntax for type timestamp: "2005-05-03 14:07:33,279213" I see that Python's timestamp format is not accepted by postgresql. Mage -- http://mail.python.org/mailman/listinfo/python-list
Re: descriptor dilemma
Yup ?!? Weird ... especially as: >>> id(c.f) == id(C.__dict__['f'].__get__(c,C)) True I was pretty sure that 'id(a) == id(b)' iff 'a is b' ... I thought initially that you had two *copies* of the same method bot obviously it's not true ... SB -- http://mail.python.org/mailman/listinfo/python-list
Re: descriptor dilemma
On Wed, May 04, 2005 at 09:14:18AM -0700, Sébastien Boisgérault wrote: > > Yup ?!? Weird ... especially as: > > >>> id(c.f) == id(C.__dict__['f'].__get__(c,C)) > True Here, c.f is discarded by the time the right-hand-side of == is executed. So the object whose id() is being calculated on the right-hand-side could turn out to be the same, since the two objects have disjoint lifetimes. Here are some more cases of the same thing: >>> id([]) == id([]) 1 >>> id([]) == id([1]) 1 Jeff pgp0amP007OuW.pgp Description: PGP signature -- http://mail.python.org/mailman/listinfo/python-list
How do you convert a string obj to a file obj?
I'm writing a web app whereby a user uploads a tar acrhive which is then opened and processed. My web form reads the file like this: while 1: data = value.file.read(1024 * 8) # Read blocks of 8KB at a time if not data: break which leaves me with data as a string obj. The problem that I have is that the function that processes the archive expects a file object. So far the only solution I have found it to write the file to disk and then read it back. Is there an easy way to convert data, in the example above into a file object? Thanks -Matthew -- http://mail.python.org/mailman/listinfo/python-list
Re: A faster method to generate a nested list from a template?
Jeff Epler wrote:
> Are there only a few, unchanging templates? If so, (dynamiclly)
create
> a function for each template. This will be nearly the fastest you
can
> go in Python, excluding the time to create and byte-compile the
nesting
> function.
>
> # This code is in the public domain
> def make_nesting_expression(l, s):
> result = []
> for c in l:
> if isinstance(c, list):
> sub, s = make_nesting_expression(c, s)
> result.append(sub)
> else:
> result.append("l[%d]" % s)
> s += 1
> print "make_nesting_expression", l, result
> return "[" + ",".join(result) + "]", s
>
> def make_nesting_function(l):
> return eval("lambda l: %s" % make_nesting_expression(l, 0)[0])
>
> t = [['a1','a2'],['b1'],['c1'],['d1']]
> l = [1, 2, 3, 4, 5]
> f = make_nesting_function(t)
> print f(l)
>
> Jeff
Nice approach! Though I'm wondering, because the "template" is so close
to the function you're trying to create, why not just create the
function directly? As in:
>>> f5 = lambda p: (p[0:2], p[2], p[3], p[4])
>>> f5(('a', 'b', 'c', 'd', 'e', 'f'))
(('a', 'b'), 'c', 'd', 'e')
Or if you need to be able to remember what the template looks like
(e.g. reading/writing it as a string in a file), you can always create
the function by evaluating a (properly constructed) template string:
>>> f5 = eval("lambda p: (p[0:2], p[2], p[3], p[4])")
>>> f5(('a', 'b', 'c', 'd', 'e', 'f'))
(('a', 'b'), 'c', 'd', 'e')
If you want to avoid lambdas, the same ideas can be used with short
defs, e.g.:
def f5(p): return (p[0:2], p[2], p[3], p[4])
Incidentally, these solutions raise an IndexError if your list is too
short, and silently drop the end of a list that's too long.
That's my keep-it-simple-I-might-understand-it approach.
Jason
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Re: How do you convert a string obj to a file obj?
Matthew Thorley wrote: >I'm writing a web app whereby a user uploads a tar acrhive which is then >opened and processed. My web form reads the file like this: > >while 1: >data = value.file.read(1024 * 8) # Read blocks of 8KB at a time >if not data: break > >which leaves me with data as a string obj. The problem that I have is >that the function that processes the archive expects a file object. So >far the only solution I have found it to write the file to disk and then >read it back. > >Is there an easy way to convert data, in the example above into a file >object? > >Thanks >-Matthew > > fileObj = StringIO.StringIO() fileObj.write( data ) J -- http://mail.python.org/mailman/listinfo/python-list
Re: descriptor dilemma
john wrote:
> Why do c.f and C.__dict__['f'].__get__(c,C) compare as equal under ==
> but not under *is* ?
These variations are equivalent. Every attribute access gives you a new
bound method:
>>> class C(object):
... def f(self): pass
...
>>> c = C()
>>> c.f is c.f
False
>>> c.f == c.f
True
'a is b' is true only when the names a and b are bound to the same object.
For bound methods, c.f is c.f == True would mean that Python would have to
cache them, and I don't see a potential advantage of that.
'a == b' on the other hand does what the programmer specifies:
>>> class Str(str):
... def __eq__(self, other): return True
...
>>> Str("black") == Str("blue")
True
It makes sense for bound methods to compare equal if they refer to the same
function and instance (though I don't know if the class is checked, too).
Peter
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zipimport
Hi,
I have a zip file structured like this:
mymodule.zip\
module1.py
submodule\
submodule1.py
I tried to load submodule.submodule1 using this pice of code:
import zipimport
z = zipimport.zipimporter("mymodule.zip")
z.load_module("submodule.submodule1")
but it does not work (load_module raises an exception)
why?
tnx, bye
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Re: How do you convert a string obj to a file obj?
John Abel wrote: > Matthew Thorley wrote: > >> I'm writing a web app whereby a user uploads a tar acrhive which is then >> opened and processed. My web form reads the file like this: >> >> while 1: >>data = value.file.read(1024 * 8) # Read blocks of 8KB at a time >>if not data: break >> >> which leaves me with data as a string obj. The problem that I have is >> that the function that processes the archive expects a file object. So >> far the only solution I have found it to write the file to disk and then >> read it back. >> >> Is there an easy way to convert data, in the example above into a file >> object? >> >> Thanks >> -Matthew >> >> > fileObj = StringIO.StringIO() > fileObj.write( data ) > > J > I gave that a shot but got this error? Perhaps I misunderstood what kind of object I needed. Any thoughts? AttributeError: StringIO instance has no attribute 'rfind' -- http://mail.python.org/mailman/listinfo/python-list
FTP/TLS connection using python
Hello, I was wondering if there is any other way to securly connect to an FTP site using SSL or TLS? I dont have the option of purchasing M2Crypto from the site. Any help/suggestions would help. Thanks! --Barry -- http://mail.python.org/mailman/listinfo/python-list
Re: descriptor dilemma
Jeff Epler wrote: > > >>> id(c.f) == id(C.__dict__['f'].__get__(c,C)) > > True > > Here, c.f is discarded by the time the right-hand-side of == is > executed. So the object whose id() is being calculated on the > right-hand-side could turn out to be the same, since the two objects > have disjoint lifetimes. Understood. I guess I was influenced by C++ where a temporary survives up to the end of the complete statement in which it was created. Right ? SB -- http://mail.python.org/mailman/listinfo/python-list
Re: FTP/TLS connection using python
I don't have direct experience by Google turned this up: http://trevp.net/tlslite/ Larry Bates scrimp wrote: > Hello, >I was wondering if there is any other way to securly connect to an > FTP site using SSL or TLS? I dont have the option of purchasing > M2Crypto from the site. Any help/suggestions would help. Thanks! > > --Barry > -- http://mail.python.org/mailman/listinfo/python-list
Re: FTP/TLS connection using python
Wow, thanks very much Ive been searching on google for a few days now and have never seen this yet. Thanks ill take a look at what I can do with this --Barry -- http://mail.python.org/mailman/listinfo/python-list
Re: how can I sort a bunch of lists over multiple fields?
Lonnie Princehouse wrote: > Non-trivial: > Any time the user decides to (1) cache intermediary results for a cmp > function or (2) define a __cmp__ function for the key return value. > These arise when comparison of partial keys is often sufficient to > establish order between two objects. If you want to compare partial keys, often the simplest approach is to use tuples as keys, with the elements of the tuple being the "parts" of the key. Python's standard tuple comparison mechanism takes care of the rest. STeVe -- http://mail.python.org/mailman/listinfo/python-list
