🌐 Mailman 3 January 2004 - Python-list - python.org

regexp upward compatibility bug ?
by Gilles Lenfant Jan. 29, 2004

Jan. 29, 2004

Hi, Porting a Zope app from (old) Zope 2.3.3 powered by Python 1.5.2 to a newer Zope powered by Python 2.1.3, I found a regexp problem : This does perfectly the job with Python 1.5.2 but raises an exception with Python 2.1.3. I can't see what's wrong when reading the "re" module doc. Any hint welcome File "txt2html.py", line 27, in txt2html pat = re.compile(r'((ftp|http)://[\w-]+(?:\.[\w-]+)*(?:/[\w-\.?=]*)*)') File "/usr/local/lib/python2.1/sre.py", line 90, in compile return _compile(pattern, flags) File "/usr/local/lib/python2.1/sre.py", line 136, in _compile raise error, v # invalid expression sre_constants.error: bad character range Many thanks by advance -- Gilles

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C API: how to tell if x is a new style instance?
by Michal Vitecek Jan. 29, 2004

Jan. 29, 2004

hello everyone, i've tried to find a way to determine in the python C-API if x is an instance of a (damned) new style class, but failed :/ can someone please tell me how this could be accomplished? thank you, -- fuf (fuf(a)mageo.cz)

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Re: isinstance() bug
by Rainer Deyke Jan. 29, 2004

Jan. 29, 2004

Michal Vitecek wrote: > it's my belief that if i'm instantiating a class from the same > location no matter how i imported its definition, its instances are > always of the same class. Your belief is incorrect. 'package.module.A' and 'module.A' are distinct classes. Modifications to one do not show up in the other. If 'isinstance' reported that an instance of 'package.module.A' is an instance of 'module.A', 'isinstance' would be broken and unusable. -- Rainer Deyke - rainerd(a)eldwood.com - http://eldwood.com

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sending mail cc, bcc
by Alberto Vera Jan. 29, 2004

Jan. 29, 2004

Hello: I have a library called smtplib that send email I use these lines to use it: (from -->to) ------------------------------------ server = smtplib.SMTP(server) server.sendmail(fromaddr, toaddrs, message) ------------------------------------ But I'd like to include some mails CC ,BCC. (from -->to) ( |-->cc ) ( |-->bcc) Does anyone have a library to make it? (mail: from, to, cc, bcc) Regards

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Re: Error under Cygwin - threading module
by Jason Tishler Jan. 29, 2004

Jan. 29, 2004

AdSR, Please keep you replies on-list. On Wed, Jan 28, 2004 at 09:30:40AM -0800, Artur de Sousa Rocha wrote: > --- Jason Tishler <jason(a)tishler.net> wrote: > > I "spoke" too soon -- I was able to reproduce the problem after 160 > > iterations. Please try the latest snapshot: > > > > http://cygwin.com/snapshots/ > > > > and report back whether or not this solves your problem. > > I installed the latest snapshot of cygwin1.dll > (cygwin1-20040126.dll.bz2). The problem persists, error messages show > about as often as previously. Thanks for trying the above. Please post your problem to the Cygwin mailing list <cygwin at cygwin dot com> -- we will get more traction there. I will attempt to help when I see your post. Thanks, Jason -- PGP/GPG Key: http://www.tishler.net/jason/pubkey.asc or key servers Fingerprint: 7A73 1405 7F2B E669 C19D 8784 1AFD E4CC ECF4 8EF6

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Upload with FTP
by Djordje Telebak Jan. 29, 2004

Jan. 29, 2004

Hi all I'm trying to write a little python file for file upload. I have wrote something like this from ftplib import FTP ftp = FTP('172.xxx.yyy.zzz') ftp.login('login_name','password') ftp.storlines('STOR PRE',something) ftp.quit() I don't know what is wrong and what I have to put instead of something or to change i this line to make this work (to upload file PRE from let's say C:\ directory to some home dir. on host 172.xxx.yyy.zzz). BR Djordje Telebak

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Virus Alert
by viruswall＠hypovereinsbank.de Jan. 29, 2004

Jan. 29, 2004

The mail message (file: feyz.zip) you sent to oliver.imbusch.extern(a)hvbsystems.com contained a virus.

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Threads - where to start?
by firephreek Jan. 29, 2004

Jan. 29, 2004

A while back I posted asking about a problem I was having with some threads. Somebody responded back with a link to a slide show, but with the little bit of background I have in this subject, I wasn't able to come away with a whole lot, much less a solution to my problem. Where can I go if I want to get a good understanding of threads and how to implement them? I'm not sure what exactly is meant by blocking or locking, or when they should be implemented. Most of the examples I've read through seem to use the 'threading.py' module as a base for their own class of threads. Is this the purpose of threading.py? Or can it be used standalone? What about communicating across threads? Do they have their own namespace? Can they refer to globals in the main program? Why won't some of them just die? I have a lot of questions, but I just don't know where to go! Help! Stryder

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Re: Rookie question about data types (hashtables)
by Eric Brunel Jan. 29, 2004

Jan. 29, 2004

Steve D. Perkins wrote: [snip] > What I would LIKE to have is a hashtable-like structure that lets me > retrieve multiple values based on a partial key. AFAIK, if you can do queries on a "hashtable-like structure" with a partial key, it cannot be a real hashtable... > I want to have a text > field for the user to type in a Spanish word, and a box below containing > a list of English words. With each character that the user types, I > would like to narrow down the words listed in the box below. That is, > when you type the letter "a" the box will contain all English words > starting with the letter "a". When you then type "n", the box will > narrow further and contain all words starting with "an", etc... until > you've narrowed it down to appropriate word. I'd use a Python dictionary indexed not on words, but on letters in the word. So, for a dictionary translating english words into french, you'd have for example: dictionary['m']['o']['n']['d']['a']['y']['translation'] = 'lundi' (NB: having 'translation' as the last key is to solve the problem of words included in another; see 'sun' and 'sunday'. BTW, any key that is not a single character can be used...) Here is an example implementation: -------------------------------------------------------- def addWord(myDict, originalWord, translatedWord): d = myDict for c in originalWord: if not d.has_key(c): d[c] = {} d = d[c] d['translation'] = translatedWord def _allTranslations(rootWord, d): res = [] for c in d.keys(): if c == 'translation': res.append((rootWord, d[c])) else: res += _allTranslations(rootWord + c, d[c]) return res def getTranslations(myDict, word): d = myDict for c in word: if not d.has_key(c): return [] d = d[c] return _allTranslations(word, d) -------------------------------------------------------- And then you'd do: frenchDict = {} ## Week days addWord(frenchDict, 'monday', 'lundi') addWord(frenchDict, 'tuesday', 'mardi') # ... addWord(frenchDict, 'sunday', 'dimanche') ## Months addWord(frenchDict, 'january', 'janvier') addWord(frenchDict, 'february', 'fevrier') # ... addWord(frenchDict, 'december', 'decembre') print getTranslations(frenchDict, 'wednesday') print getTranslations(frenchDict, 'ju') print getTranslations(frenchDict, 's') I don't know how it scales up for big dictionaries, not to mention huge ones... HTH -- - Eric Brunel <eric dot brunel at pragmadev dot com> - PragmaDev : Real Time Software Development Tools - http://www.pragmadev.com

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popen2 with large input
by cherico＠bonbon.net Jan. 29, 2004

Jan. 29, 2004

from popen2 import popen2 r, w = popen2 ( 'tr "[A-Z]" "[a-z]"' ) w.write ( t ) # t is a text file of around 30k bytes w.close () text = r.readlines () print text r.close () This simple script halted on w.write ( t ) Anyone knows what the problem is?

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