RELEASE: twill-0.8.2
ANNOUNCING twill v0.8.2. twill is a simple language for browsing the Web. It's designed for automated testing of Web sites, but it can be used to interact with Web sites in a variety of ways. In particular, twill supports form submission, cookies, redirects, and HTTP authentication. A twill script to use the I'm feeling lucky button on Google looks like this: setlocal query twill Python go http://www.google.com/ fv 1 q $query submit btnI # use the I'm feeling lucky button show (Note that using this script abuses Google's Terms of Service. So don't.) This is the eighth public release of twill, version 0.8.2. You can install twill with easy_install, or download this release at http://darcs.idyll.org/~t/projects/twill-0.8.2.tar.gz Documentation is included in the .tar.gz and is also online at http://www.idyll.org/~t/www-tools/twill/ Miscellaneous details: twill is implemented in Python and uses pyparsing and mechanize. In addition to the existing simple command language, twill can easily be extended with Python. twill also provides a fairly simple and well-documented wrapper around mechanize. twill does not understand JavaScript, I'm sorry to say. --- New features: * added robust-ified form parsing code; * updated to latest mechanize, ClientForm, ClientCookie code; * updated to latest pyparsing code (1.4.1); * updated to latest wsgi_intercept code; * 'set_output' can now be used to redirect twill output specifically; * added execute_script function; * added return values to a number of the simple command-line functions; * fixed bugs in 'showlinks', 'go'; Backwards incompatibility issues: * changed tidy config option names; * wsgi_intercept code now wants a function that does its own app object caching. -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
[ANN] Pydev 1.0.1 release
Hi All, Pydev Extensions version 1.0.1 has been released More details at http://www.fabioz.com/pydev Pydev - Python IDE (Python Development Enviroment for Eclipse) version 1.0.1 has been released. More details at http://pydev.sf.net Details for Release: 1.0 .1: This was a 'single bug' release (it fixes an out-of-memory error when restoring the interpreter). Cheers, Fabio -- Fabio Zadrozny -- Software Developer ESSS - Engineering Simulation and Scientific Software www.esss.com.br Pydev Extensions http://www.fabioz.com/pydev PyDev - Python Development Enviroment for Eclipse http://pydev.sf.net http://pydev.blogspot.com -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
Re: Question about idioms for clearing a list
[Steven D'Aprano] The Zen isn't only one way to do it. If it were, we wouldn't need iterators, list comps or for loops, because they can all be handled with a while loop (at various costs of efficiency, clarity or obviousness). del L[:] works, but unless you are Dutch, it fails the obviousness test. [Fredrik Lundh] unless you read some documentation, that is. del on sequences and mappings is a pretty fundamental part of Python. so are slicings. both are things that you're likely to need and learn long before you end up in situation where you need to be able to clear an aliased sequence. Fred is exactly correct. Slicing is absolutely basic to Python. Accordingly, it gets covered right at the beginning of the tutorial (section 3.1). Likewise, the del keyword is fundamental -- if you can't get, set, and del, then you need to go back to collections school. Also specious is the suggestion that dir(L) or help(L) is useless. The entries for the __delitem__ and __delslice__ methods are no more hidden than for __getitem__ or __add__. The help entry goes a step further and shows the translation to del x[y] and del x[i:j]. While the sentiment behind the list.clear() suggestion is noble, it is an exercise in futility to design a language around the presumption that other programmers are incapable of learning the basics of the language. There was a pithy Tim Peters quotation to the effect that he was unpersuaded by language proposals predicated on some hypothetical average programmer not being smart enough to understand something that the rest of us find to be basic. Raymond Hettinger -- http://mail.python.org/mailman/listinfo/python-list
how to copy a Python object
Hi, I am new to Python and OO programming. I need to copy a Python object (of a class I made myself). new_obj = old_object doesn't seem to work since apparently new_obj is then a referrence to old_obj. I found out that there is a module called 'copy' that allows you to do a shallow or a deep copy. I need a deep copy since my object contains dicts to other objects that also need to be copied. However, when I do new_object = copy.deepcopy(old_object) I get a series of errors. The most important one: TypeError: object.__new__(PySwigObject) is not safe, use PySwigObject.__new__() So any help much appreciated. With kind regards, Kris I am using Python 2.4 -- http://mail.python.org/mailman/listinfo/python-list
Re: Compiling
Martin v. Löwis wrote: Ravi Teja wrote: But more often I am looking to use Python libraries in other languages since I am more familiar with them and they typically tend to be more high level (the way I like it) than the standard libraries of others. Ah. In that case, the normal C API should work fine to call into Python in most cases, no? If not, have you tried the CXX package, or Boost::Python? I am aware of those. But my other languages are not C/C++. Sure I could first wrap them in a DLL written in C/C++ using CXX/Boost and then call the DLL from the language in question. But that is more trouble than it is worth. -- http://mail.python.org/mailman/listinfo/python-list
Re: Question about idioms for clearing a list
[EMAIL PROTECTED] In my programs I have seen that there is another practical difference between version 1 and 3: (1) mylist[:] = [] (3) mylist = [] If you create a big mylist again and again many times, the version 1 uses the memory more efficiently (probably less work for the garbage collector), and the program can be (quite) faster (this is true in some implementations different from CPython too). There should be almost no difference in runtime between the two. The underlying CPython implementation caches list objects and is usually able to create the new list without any calls to the memory allocator. Likewise, garbage collection performs the same for both -- any objects left with no references are immediately freed and any with only circular references get freed when the collector runs. The speed-up you observed likely occured with different code. For instance, given a large list, you can typically update or replace individual elements faster than you can build-up a new list: L = [0] * 1000 # starting list for i in xrange(len(L)): L[i] += 1 beats: L = [0] * 1000 # starting list L = [L[i]+1 for i in xrange(len(L))] Raymond -- http://mail.python.org/mailman/listinfo/python-list
Re: Best way of finding terminal width/height?
You might want to try just setting a flag in the signal handler
to see if that prevents the I/O operations on stdin/stdout from
being interrupted.
Tried this:
source
import signal, os, sys
from terminal_info import get_terminal_size
terminal_size = get_terminal_size()
_bTerminalSizeChanged = False
def report_terminal_size_change(signum, frame):
global _bTerminalSizeChanged
_bTerminalSizeChanged = True
def update_terminal_size():
global _bTerminalSizeChanged, terminal_size
terminal_size = get_terminal_size()
_bTerminalSizeChanged = False
signal.signal(signal.SIGWINCH, report_terminal_size_change)
while True:
# Do lots of IO (I'm trying to provoke exceptions with signal)
open('/a/large/file').read()
#raw_input()
#sys.stdin.read()
#print open('/a/large/file').read()
if _bTerminalSizeChanged:
update_terminal_size()
print terminal_size
/source
As before, the only IO case above that doesn't throw exceptions is the
uncommented one.
Yup, that's the exception. Standard practice is to catch it and
retry the I/O operation.
Hmm... I guess it's not that easy to retry IO operations on pipes and streams
(stdin/stdout in this case)... And I tend to lean pretty heavily on those since
I usually write UNIX style text filters.
So in case I haven't missed something fundamental I guess my best option is to
accept defeat (of sorts :-) and be happy with picking a terminal width at
program startup.
But anyway, it's been really interesting trying this out.
Thank you Grant (och Jorgen) for all help and tips!
/Joel
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Re: Detecting line endings
Fuzzyman enlightened us with: This is what I came up with. [...] Comments/corrections welcomed. You could use a little more comments in the code, but apart from that it looks nice. Sybren -- The problem with the world is stupidity. Not saying there should be a capital punishment for stupidity, but why don't we just take the safety labels off of everything and let the problem solve itself? Frank Zappa -- http://mail.python.org/mailman/listinfo/python-list
Re: UTF16, BOM, and Windows Line endings
Neil Hodgson wrote: Fuzzyman: Thanks - so I need to decode to unicode and *then* split on line endings. Problem is, that means I can't use Python to handle line endings where I don't know the encoding in advance. In another thread I've posted a small function that *guesses* line endings in use. You can normalise line endings: x = a\r\nb\rc\nd\n\re y = x.replace(\r\n, \n).replace(\r,\n) y 'a\nb\nc\nd\n\ne' print y a b c d e The empty line is because \n\r is 2 line ends. Thanks - that works, but replaces *all* instances of '\r' to '\n' - even if they aren't used as line terminators. (Unlikely perhaps). It also doesn't tell me what line ending was used. Apparently files opened in universal mode - 'rU' - have a newline attribute. That makes it a bit easier. :-) Fuzzyman http://www.voidspace.org.uk/python/index.shtml Neil -- http://mail.python.org/mailman/listinfo/python-list
Re: Detecting line endings
Alex Martelli wrote: Fuzzyman [EMAIL PROTECTED] wrote: Hello all, I'm trying to detect line endings used in text files. I *might* be decoding the files into unicode first (which may be encoded using Open the file with 'rU' mode, and check the file object's newline attribute. Ha, so long as it works with Python 2.2, that makes things a bit easier. Rats, I liked that snippet of code (I'm a great fan of list comprehensions). :-) My worry is that if '\n' *doesn't* signify a line break on the Mac, It does, since a few years, since MacOSX is version of Unix to all practical intents and purposes. I wondered if that might be the case. I think I've worried about this more than enough now. Thanks Fuzzyman http://www.voidspace.org.uk/python/index.shtml Alex -- http://mail.python.org/mailman/listinfo/python-list
Re: Detecting line endings
Alex Martelli wrote: Fuzzyman [EMAIL PROTECTED] wrote: Hello all, I'm trying to detect line endings used in text files. I *might* be decoding the files into unicode first (which may be encoded using Open the file with 'rU' mode, and check the file object's newline attribute. Do you know if this works for multi-byte encodings ? Do files have metadata associated with them showing the line-ending in use ? I suppose I could test this... All the best, Fuzzy My worry is that if '\n' *doesn't* signify a line break on the Mac, It does, since a few years, since MacOSX is version of Unix to all practical intents and purposes. Alex -- http://mail.python.org/mailman/listinfo/python-list
Re: HTMLDocument and Xpath
Got the answer - there's a bug in xpath. I think the HTML parser
converts all the tags (but not the attributes) to uppercase. Xpath
definitely does not like my first string but, these work fine:
test = Evaluate('//TD', doc_node.documentElement)
test = Evaluate('/HTML/BODY/TABLE/TR/TD', doc_node.documentElement)
test = Evaluate('/HTML/BODY/TABLE/TR/TD[1]', doc_node.documentElement)
Shawn
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[ANN] Pydev 1.0.1 release
Hi All, Pydev Extensions version 1.0.1 has been released More details at http://www.fabioz.com/pydev Pydev - Python IDE (Python Development Enviroment for Eclipse) version 1.0.1 has been released. More details at http://pydev.sf.net Details for Release: 1.0 .1: This was a 'single bug' release (it fixes an out-of-memory error when restoring the interpreter). Cheers, Fabio -- Fabio Zadrozny -- Software Developer ESSS - Engineering Simulation and Scientific Software www.esss.com.br Pydev Extensions http://www.fabioz.com/pydev PyDev - Python Development Enviroment for Eclipse http://pydev.sf.net http://pydev.blogspot.com -- http://mail.python.org/mailman/listinfo/python-list
Re: python
On 2/6/06, Brain Murphy [EMAIL PROTECTED] wrote: I am new to python and programming but i was wondering, what can i program with python?? Brian Uh, that's a hard one to answer. You can program just about anything in Python except device drivers and operating systems - and I'm prepaired tlo be proved wrong on those last two. What do you *want* to program? -- Cheers, Simon B, [EMAIL PROTECTED], http://www.brunningonline.net/simon/blog/ -- http://mail.python.org/mailman/listinfo/python-list
Great Job Board
--_NextPart_9763-0843-0CE6F984-7AA4 Content-Type: text/plain Content-Transfer-Encoding: 7bit There is a great job board located at the employment section of http://www.4charlesson.com . So pass it on to anyone looking for a job. --_NextPart_9763-0843-0CE6F984-7AA4-- -- http://mail.python.org/mailman/listinfo/python-list
Re: winguiauto
On 30 Jan 2006 11:05:58 -0800, puff [EMAIL PROTECTED] wrote: There seem to be a number of winguiauto(s) available on the net. Is there any 'offical' version? Official? Hmm, dunno. ;-) The version from my site is a bit old. I've escaped Windows now, so I'm not doing any work on Windows automation any more, but others are taking it forward. You might look at http://www.tizmoi.net/watsup/intro.html or http://sourceforge.net/projects/pywinauto. -- Cheers, Simon B, [EMAIL PROTECTED], http://www.brunningonline.net/simon/blog/ -- http://mail.python.org/mailman/listinfo/python-list
45 [XPost] Libero ADSL: Statene alla Larga!!! 454226
Wind, Infostrada e Libero vi stanno fregando! Si lamentano una serie di disservizi con eMule tra cui il blocco della navigazione internet qualora eMule sia funzionante, l'impossibilità di far funzionare Kademlia, distacchi continui dai server ed2k, velocità ridicole della linea stessa qualora miracolosamente si riesca a scaricare (e limitazioni a velocità prossime a quelle di un 56k anche per l'utilizzo di altri p2p). Tutto questo deriva dall'applicazione di un sistema di limitazione del traffico P2P acquistato dai provider (vedi l'articolo In Italia prove di guerra al P2P su Punto Informatico) che si basa sull'analisi dei pacchetti (Forse questo?). In particolare da sottolineare le affermazioni di un manager Cisco secondo qui Si tratta di una piattaforma hardware e software che è stata applicata per la prima volta in Giappone, con successo, per limitare l'impatto del traffico peer-to-peer. ... Permette ai provider di fare bandwidth shaping, blocking o redirezione di traffico per togliere banda alle applicazioni peer-to-peer e riservarne quindi di più ad altri servizi. Tradotto: gli operatori ADSL vi stanno fregando e noi sappiamo perchè. Wind stessa ha ammesso l'utilizzo di questa tecnologia su Libero (vedi Un bidone le ADSL 4 Megabit? di PI): Da qualche giorno abbiamo attivato un engine che, in caso di traffico elevato, dà priorità a quello più prezioso per l'utenza residenziale: navigazione, posta, VoIP. Il tutto, a scapito del resto, per esempio del peer to peer. Quando avete sottoscritto il contratto adsl avete ottenuto accesso a INTERNET senza alcuna limitazione. Oggi il P2P è parte di internet, anzi il 70% del traffico mondiale di dati è proprio per il P2P (tra cui eMule). Bloccando il P2P le compagnie telefoniche vengono meno al contratto sottoscritto e spero che qualcuno più esperto di noi (magari uno dei tanti movimenti consumatori) si affretti a intentare qualche causa legale: certa gente conosce solo il linguaggio degli avvocati e dei soldi. Non fatevi fregare. Il P2P non è illegale. E' illegale scaricare materiale protetto da copyright. Non possono bloccare il P2P e dirvi di non usarlo (una delle risposte stupide dei call center). E' come vietare i coltelli da cucina perchè potrebbero essere usati per uccidere le persone. Certo che questo metodo è interessante. Invece di COMPRARE altre linee dalla Telecom per soddisfare il traffico dei loro utenti, queste compagnie cercano di STROZZARE gli utenti dando loro sempre meno. Non contente, promettono velocità sempre più alte (24 Mbit???) che però potete usare solo per navigare sul www. Peccato nessuno dica che per navigare sul web basta e avanza una adsl 640Kbps da 20 euro al mese. Due sono le cose: o questi signori si affrettano a sbloccare le linee o fareste meglio a disdire e passare a provider che non effettuano queste limitazioni (Alice adsl attualmente non ha questi problemi). Se volete esempi di mail di protesta ed alcuni indirizzi utili consultate: Protesta contro i filtri p2p di libero (http://www.liberop2p.p2pforum.it/) dove troverete anche una guida a disdire Libero ADSL. Da: Free Internet -- http://mail.python.org/mailman/listinfo/python-list
Re: Question about idioms for clearing a list
Raymond Hettinger wrote: [Steven D'Aprano] The Zen isn't only one way to do it. If it were, we wouldn't need iterators, list comps or for loops, because they can all be handled with a while loop (at various costs of efficiency, clarity or obviousness). del L[:] works, but unless you are Dutch, it fails the obviousness test. [Fredrik Lundh] unless you read some documentation, that is. del on sequences and mappings is a pretty fundamental part of Python. so are slicings. both are things that you're likely to need and learn long before you end up in situation where you need to be able to clear an aliased sequence. Fred is exactly correct. Slicing is absolutely basic to Python. Accordingly, it gets covered right at the beginning of the tutorial (section 3.1). Yes, right after UTF encoding details, complex numbers, and various mentions of shell scripts. I don't want to criticise the hard work that went into making the tutorial but let's not pretend it's the epitome of documentation or even necessary the most obvious reference for users. Likewise, the del keyword is fundamental -- if you can't get, set, and del, then you need to go back to collections school. I have hardly used the del keyword in several years of coding in Python. Why should it magically spring to mind in this occasion? Similarly I hardly ever find myself using slices, never mind in a mutable context. del L[:] is not obvious, especially given the existence of clear() in dictionaries. I'm not necessarily requesting a clear() method, but I am requesting a little more understanding towards those who expected one. The list interface is full of redundant convenience methods, so one more would hardly be a surprise or an unreasonable thing for people to expect. Again we unfortunately have a bit of an attitude problem towards anyone posting here that doesn't know whatever the experts think is obvious. -- Ben Sizer -- http://mail.python.org/mailman/listinfo/python-list
Re: fairly large webapp: from Java to Python. experiences?
[EMAIL PROTECTED] wrote:
(snip)
Does anyone here have any experience with large(ish) webapps in Python?
Depends on the definition of large(ish). If you use KLOC as a metric,
you can expect a Python solution to be 5 to 10 time smaller, so what's a
'large' app in Java may end up as a small/medium app with Python !-)
I was sniffing around the following A-team of toolkits: CherryPy,
Cheetah, SQLObject, all behind Apache2.
If you plan to run behind Apache2, you may want to have a look at
Myghty. It's somewhere between a framework and a templating system, and
the architecture is based on Perl's HTML::Mason, which has proven to be
successful. It adds to Mason the possibility to take a clean MVC
approach (as well as the more ServerPage oriented approach of Mason),
and can be deployed as either a mod_python handler, fastcgi, plain old
cgi, WSGI, and even as a standalone app (with a Python HTTPServer) for
developpement.
You may also want to take a look at Turbogears (CherryPy + SQLObject +
Kid + Mochikit) or Subway (CherryPy + SQLObject + Cheetah).
Has anyone seen performance
issues with Python webapps?
Actually, only with Plone or CPS (or other ZopeCMF based app). Zope
itself is pretty usable, but the whole CMF part is a monstruosity IMHO.
Could one reasonably expect to have an easier time with maintainence
and future modifications with using Python over Java?
Err... It of course depends on first having well written code and a
sensible design, but when it comes to agility - and as long as you stay
away from Zope's CMF !-) -, I bet that Python beats Java hands down.
Any tips, stories, recommendations, and/or experiences are most
welcome.
It took me about one month to write my first Zope application - an
ad-hoc mix of an online catalog and basic CMS (pages, news,
downloadables files, ...), with LDAP and PostgresSQL in the mix,
fulltext and advanced search, newsletter subscription, a 'members' zone
etc. I had to learn Zope during the process, and I guess I could
actually rewrite the whole thing in less than 2 weeks with a much better
design - but what, the app is in production for 2 years with near zero
corrective maintenance (the biggest problem we had was with system
updates messing with the psycopg adapter...), gives full satisfaction to
the customer, and has for now proven to be very easy to modify and
evolve (so easy that we didn't even bothered to bill the customer for
much of the modification requests)... And Zope is certainly not known
as the most agile or lightweight Python web framework/application server !-)
--
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: Accessing Windows Serial Port
Hi All, Would anybody know whether PySerial would work over an usb/serial adapter? (what about usb/parallel adapters?) Thx. malv -- http://mail.python.org/mailman/listinfo/python-list
Re: how to copy a Python object
[EMAIL PROTECTED] a écrit : Hi, I am new to Python and OO programming. I need to copy a Python object (of a class I made myself). new_obj = old_object doesn't seem to work since apparently new_obj is then a referrence to old_obj. it is I found out that there is a module called 'copy' that allows you to do a shallow or a deep copy. I need a deep copy since my object contains dicts to other objects that also need to be copied. yes but ... However, when I do new_object = copy.deepcopy(old_object) I get a series of errors. The most important one: TypeError: object.__new__(PySwigObject) is not safe, use PySwigObject.__new__() you see ? that illustrates there is no general solution to the deep copy problem So any help much appreciated. just provide your own copy() operator on your class you and only you can know how deep you want to copy things (it just depends on the nature of said things) With kind regards, Kris I am using Python 2.4 -- http://mail.python.org/mailman/listinfo/python-list
Re: how to copy a Python object
Already thanks for the reply, but how to write your own copy operator? Won't you always be passing referrences to new_obj? -- http://mail.python.org/mailman/listinfo/python-list
Re: python
A new OS in Python : http://unununium.org/introduction :-) -- http://mail.python.org/mailman/listinfo/python-list
Re: Code Feedback
Jorgen Grahn wrote: You might want to look into using doc strings properly. You have comments at the start of functions, but they read more like implementation notes than what this method does and why. But I only had a quick look. Yeah. They were just my scaffolding notes to myself. I'd hurry up with that Conrad if I were you, and get on with the Hemingway. ;) -- http://mail.python.org/mailman/listinfo/python-list
ftp: get list of files
Hello,
I want to get a listing of my files at web server with ftp. I wantn 't
download the files.
With yyy = ftp.retrlines('LIST') I get this listing at stdout, but I
need this information at variable yyy.
How can I resolve this problem?
Thank's for your hints, Thomas
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Re: get list of files
eels wrote:
I want to get a listing of my files at web server with ftp. I wantn 't
download the files.
With yyy = ftp.retrlines('LIST') I get this listing at stdout, but I
need this information at variable yyy.
How can I resolve this problem?
as mentioned in the documentation, you need to provide a callback if
you want to collect the data from a retr operation.
yyy = []
ftp.retrlines(LIST, yyy.append)
should do the trick.
(also see the dir and nlst methods)
/F
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Re: ftp: get list of files
eels [EMAIL PROTECTED] writes:
With yyy = ftp.retrlines('LIST') I get this listing at stdout, but I
need this information at variable yyy.
How can I resolve this problem?
As written in the doc retrlines has an optional parameter (a callback function)
called on each line retrieved, so you can do something like this:
from ftplib import FTP
def writeline(data):
fd.write(data + \n)
f = FTP('ftp.kernel.org')
f.login()
f.cwd('/pub/linux/kernel')
fd = open('README', 'wt')
f.retrlines('RETR README', writeline)
fd.close()
f.quit()
--
Lawrence - http://www.oluyede.org/blog
Anyone can freely use whatever he wants but the light at the end
of the tunnel for most of his problems is Python
--
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Re: RPy / R
jason schrieb:
Hello:
I installed the following:
python-2.4.2.msi
pywin32-207.win32-py2.4.exe
R-2.2.1-win32.exe
rpy-0.4.6-R-2.0.0-to-2.2.1-py24.win32.exe
on a Windows XP (SP2) box.
When I try to run the following (source:
http://rpy.sourceforge.net/plotting-with-RPy.html) in IDLE
from rpy import *
x = range(0, 10)
y = [ 2*i for i in x ]
r.plot_default(x, y)
Jason,
the example runs here without problems.
My configuration:
Python 2.3.5 (#2, Aug 30 2005, 15:50:26)
[GCC 4.0.2 20050821 (prerelease) (Debian 4.0.1-6)] on linux2
Type copyright, credits or license() for more information.
r.version
{'status': '', 'major': '2', 'language': 'R', 'os': 'linux-gnu', 'svn
rev': '36812', 'system': 'i486, linux-gnu', 'month': '12', 'platform':
'i486-pc-linux-gnu', 'year': '2005', 'arch': 'i486', 'day': '20',
'minor': '2.1'}
Seems to be a problem with your installation...
Hans Georg
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Re: get list of files
Hello Fredrik,
thank's for your quick help.
Greetings Eels
Fredrik Lundh schrieb:
eels wrote:
I want to get a listing of my files at web server with ftp. I wantn 't
download the files.
With yyy = ftp.retrlines('LIST') I get this listing at stdout, but I
need this information at variable yyy.
How can I resolve this problem?
as mentioned in the documentation, you need to provide a callback if
you want to collect the data from a retr operation.
yyy = []
ftp.retrlines(LIST, yyy.append)
should do the trick.
(also see the dir and nlst methods)
/F
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Re: how to copy a Python object
[EMAIL PROTECTED] wrote: Already thanks for the reply, but how to write your own copy operator? Won't you always be passing referrences to new_obj? for example this would work class X(object): ... def __init__(self,lst): ... self.lst = lst ... def copy(self): ... return X(self.lst[:]) ... def __str__(self): ... return lst has id %i % id(self.lst) ... x=X([1,2,3]) y=x.copy() print x lst has id 1078097132 print y lst has id 1078097228 but I don't like that in this case self.lst must be passed through __init__ I can think of another variant class Y(object): ... def fill(self): ... self.lst = [randint(i*10,(i+1)*10) for i in xrange(5)] ... def __repr__(self): ... return lst has id = %i % id(self.lst) ... def copy(self): ... ret = Y() ... ret.lst = self.lst[:] ... return ret ... from random import randint y=Y() y.fill() y lst has id = 1078097452 print y lst has id = 1078097452 x=y.copy() x lst has id = 1078097004 ... anyone? are there better approaches? Regards, Daniel -- http://mail.python.org/mailman/listinfo/python-list
Re: python
Salvatore wrote: A new OS in Python : http://unununium.org/introduction :-) That page includes: Is the project dead? Maybe. Very little code was written in 2005. 2006 so far does not look better. What code has been written isn't very useful. ... regards Steve -- Steve Holden +44 150 684 7255 +1 800 494 3119 Holden Web LLC www.holdenweb.com PyCon TX 2006 www.python.org/pycon/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Detecting line endings
Alex Martelli wrote: Fuzzyman [EMAIL PROTECTED] wrote: Hello all, I'm trying to detect line endings used in text files. I *might* be decoding the files into unicode first (which may be encoded using Open the file with 'rU' mode, and check the file object's newline attribute. Do you think it would be sensible to have file.readline in universal newline support by default? I just got flummoxed by this issue, working with a (pre-alpha) package by very experienced Python programmers who sent file.readline to tokenizer.py without universal newline support. Went on a long (and educational) journey trying to figure out why my file was not being processed as expected. Are there circumstances that it would be sensible to have tokenizer process files without universal newline support? The result here was having tokenizer detect indentation inconstancies that did not exist - in the sense that the files were compiled and ran fine by Python.exe. Art -- http://mail.python.org/mailman/listinfo/python-list
Re: Detecting line endings
Arthur wrote: Alex Martelli wrote: I just got flummoxed by this issue, working with a (pre-alpha) package by very experienced Python programmers who sent file.readline to tokenizer.py without universal newline support. Went on a long (and educational) journey trying to figure out why my file was not being processed as expected. For example, the widely used MoinMoin source code colorizer sends files to tokenizer without universal newline support: http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/52298 Is my premise that tokenizer needs universal newline support to be reliable correct? What else could put it out of sync with the complier? Art -- http://mail.python.org/mailman/listinfo/python-list
Re: Unable to get PIL to load jpeg images
Someone out there must surely know - please! Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: Question about idioms for clearing a list
Raymond Hettinger wrote: [Steven D'Aprano] [...] While the sentiment behind the list.clear() suggestion is noble, it is an exercise in futility to design a language around the presumption that other programmers are incapable of learning the basics of the language. +1 QOTW There was a pithy Tim Peters quotation to the effect that he was unpersuaded by language proposals predicated on some hypothetical average programmer not being smart enough to understand something that the rest of us find to be basic. Well, for those who can't find it you just provided a fairly pithy Raymond Hettinger quote :-) regards Steve -- Steve Holden +44 150 684 7255 +1 800 494 3119 Holden Web LLC www.holdenweb.com PyCon TX 2006 www.python.org/pycon/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Accessing Windows Serial Port
malv schreef: Hi All, Would anybody know whether PySerial would work over an usb/serial adapter? If the driver for the adapter creates a virtual COM-port (i.e. it shows up as a serial port in Windows' device manager), it works. The software sees no difference between a real port and a fake one. (what about usb/parallel adapters?) Never tried it, but I guess it will work too. -- If I have been able to see further, it was only because I stood on the shoulders of giants. -- Isaac Newton Roel Schroeven -- http://mail.python.org/mailman/listinfo/python-list
Natural Language Date Processing.
I've been looking recently for date processing modules that can parse dates in forms such as next week or 6 days from next sunday. PHP has a function that will do this called 'strtotime', but I have not found a Python implementation. I've check the standard date, datetime and time modules and also mx.Date* modules. Am I overlooking something here or does it not exist? Anyone know of an implementation? Also, I realize that this is perhaps very English specific so I apologize to any non-native English speakers. --- Andrew Gwozdziewycz [EMAIL PROTECTED] http://ihadagreatview.org http://plasticandroid.org -- http://mail.python.org/mailman/listinfo/python-list
Re: Unable to get PIL to load jpeg images
[EMAIL PROTECTED] wrote: Someone out there must surely know - please! Peter Try image-sig@python.org - or better still, subscribe to the image SIG mailing list (then you'll see replies ...) I've never had any problems loading JPEG images. It's probably a setup issue. regards Steve -- Steve Holden +44 150 684 7255 +1 800 494 3119 Holden Web LLC www.holdenweb.com PyCon TX 2006 www.python.org/pycon/ -- http://mail.python.org/mailman/listinfo/python-list
Tkinter: is there a has_focus method or property for a window?
I have two windows. One is a main config window. The other is an 'Add Setting' window. Both are using two different classes. Once the Add Setting button is clicked on the Add Setting window, the setting is written to file. At that time the main config window should update its setting listing but it doesn't because it doesn't know it should. I do notice that when the Add Setting window closes, the focus goes right back to the main config window. Is there a has focus event that can trigger a command for this window? Also, if there is another way to get this done, I am open to suggestions. Thanks, Harlin Seritt -- http://mail.python.org/mailman/listinfo/python-list
Re: Strange behavior with os call in cgi script
But I do think that adding logging to a cgi script is a sensible thing to do for a beginner. Let me second that. I happen to write a lot of CGI, and ISTM that while you can do it without logging, you are condemming yourself to a lot of staring at the screen, head-scratching, and saying ``Now what could *that* mean?'' That is, CGI programming without logging seems to me to ba a lot like general programming in Perl. :-} Jim -- http://mail.python.org/mailman/listinfo/python-list
Re: how to copy a Python object
[EMAIL PROTECTED] wrote: Already thanks for the reply, but how to write your own copy operator? Won't you always be passing referrences to new_obj? If you need to modify the behaviour of copy or deepcopy, you can give your class __copy__ and __deepcopy__ methods. Then copy.copy and copy.deepcopy will use these. As a silly example, you could use: def __copy__(self): raise IOError, 'Permission denied.' http://www.python.org/doc/2.4.2/lib/module-copy.html -- http://mail.python.org/mailman/listinfo/python-list
Re: Code Feedback
mwt [EMAIL PROTECTED] wrote: 1) Is this good Python code? What should be changed to make it more Pythonesque? while not len(self.stacks) 0: while not self.stacks: An empty list is considered to be false, hence testing the list itself is the same as testing len(l) 0 . -- \S -- [EMAIL PROTECTED] -- http://www.chaos.org.uk/~sion/ ___ | Frankly I have no feelings towards penguins one way or the other \X/ |-- Arthur C. Clarke her nu becomeþ se bera eadward ofdun hlæddre heafdes bæce bump bump bump -- http://mail.python.org/mailman/listinfo/python-list
Re: Question about idioms for clearing a list
Raymond Hettinger wrote: There was a pithy Tim Peters quotation to the effect that he was unpersuaded by language proposals predicated on some hypothetical average programmer not being smart enough to understand something that the rest of us find to be basic. Peters pithy ;) As someone coming to Python as a well less than the average programmer, I agree wholeheartedly with Mr. Peters. My ability to grok Python to any extent, from that starting point, was based on an understanding that it was my responsibility to come to Python, not it to me. And concerted, almost obsessive effort, And time. OTOH - because of exactly these factors - I have actively resented and resisted promulgation of the Python is Easy meme. Pity that this stance has separated me from a sense of belonging to the community, which seems to so highly value that meme. Art -- http://mail.python.org/mailman/listinfo/python-list
Using RAW_SOCKETS on win XP SP2
Hi all. I'd need to send a TCP SYN packet having a certain string as
payload. I'm
using Python and an high level packet building library called Impacket to
build TCP and IP datagrams. I wrote this simple code that works on Linux but
not on Windows XP SP2, probably because of SP2 security limitations. Do you
got any idea about how could I solve this problem?
I found an article of Fyodor (author of nmap port scanner) about how to
solve this kind of SP2 limitations:
http://seclists.org/lists/nmap-hackers/2004/Jul-Sep/0003.html
...that says:
Instead of sending raw IP packets, we move one layer down and send our
raw IP packets in raw ethernet frames.
Do you got any idea about how could I implement a stuff like this?
Best regards.
from impacket import ImpactPacket
from socket import *
src = '10.0.0.1'
dst = '10.0.0.25'
s = socket(AF_INET, SOCK_RAW, IPPROTO_TCP)
s.setsockopt(IPPROTO_IP, IP_HDRINCL, 1)
ip = ImpactPacket.IP()
ip.set_ip_src(src)
ip.set_ip_dst(dst)
tcp = ImpactPacket.TCP()
tcp.set_SYN()
tcp.set_th_sport(43749)
tcp.set_th_dport(1000)
tcp.contains(ImpactPacket.Data('hello there'))
ip.contains(tcp)
s.sendto(ip.get_packet(), (dst, 0))
++ ERROR ++
s.sendto(ip.get_packet(), (dst, 0))
socket.error: (10022, 'Invalid argument')
--
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Re: in over my head ascii
i'm not sure, but its kinda been a pain in the hinder for a newbie like me to find it in their docs. thanks for all the help guys, let you know how it goes -- http://mail.python.org/mailman/listinfo/python-list
Re: Problem with odbc (pywin32) and unicode
Frank Millman wrote: Hi all I am using odbc from pywin32 to connect to MS SQL Server. I am changing my program from the old (incorrect) style of embedding values in the SQL command to the new (correct) style of passing the values as parameters. I have hit a problem. The following all work - cur.execute(select * from users where userid = '%s' % 'frank') # old style cur.execute(select * from users where userid = '%s' % u'frank') # old style cur.execute(select * from users where userid = ?, ['frank']) # new style This does not work - cur.execute(select * from users where userid = ?, [u'frank']) # new style I get the following error - OdbcError: Found an insert row that didn't have 1 columns [sic] It is the combination of new style and unicode that does not work. I realise that odbc is not fully DB-API compliant, but I have got away with it up to now. Does anyone know of a solution to this problem? Thanks Frank Millman I am pleased to report that this has been fixed. I have been liaising with Mark Hammond, and he has sent me a revised version which behaves correctly. This is from Mark - I'd be happy for you to mention this fix will be in build 208 - I just can't tell you when that will be :) Frank -- http://mail.python.org/mailman/listinfo/python-list
Re: How to I write DBASE files without ODBC
Durumdara wrote: Hi ! I have a text processor code and I want to put the results to standard files. HTML, XML, SQLite - they are ok. But I want to put these datas to DBF too, because when records are many, does not fit in Excel table (load from HTML). XML and SQLite need some development to get datas. I need some memo fields, not only standard field types. The fixed DBASE tables are simply writeable, but for memo I need some tool. ODBC is good for this, but I want to create standalone exe, without installation, and ODBC must be manually set... Can anybody known about DBASE handler module for Python ? Thanx for help: dd We use py2exe and Inno Setup to create a setup.exe installation program. Part of the installation in Inno is to create the ODBC object in the registry that is necessary for the program to access ODBC data source. All I did was to observe the changes in the registry before and after manually setting up a ODBC datasource and put that code in my Inno script. Works like a charm. -Larry Bates -- http://mail.python.org/mailman/listinfo/python-list
Pythonwin - problem with non English character
Hello, is there a way how to use PythonWin for editting of Python files that consist non English characters? In my Python scripts I need to use( print) Cyrilic characters and with PythonWin it is not possible . I use PythonWin 2.3.4 (#53, May 25 2004, 21:17:02) [MSC v.1200 32 bit (Intel)] on win32. Thank you L. -- http://mail.python.org/mailman/listinfo/python-list
Re: Question about idioms for clearing a list
On 7 Feb 2006 00:27:05 -0800, Raymond Hettinger [EMAIL PROTECTED] wrote: There was a pithy Tim Peters quotation to the effect that he was unpersuaded by language proposals predicated on some hypothetical average programmer not being smart enough to understand something that the rest of us find to be basic. The problem is that the average programmer in question isn't hypothetical in this case. I'm a fairly average programmer (better than average compared to my immediate colleagues). I've read every tutorial I can get my hands on, but I have no _memory_ of ever coming across the del keyword, let alone that it is fundamental to Python, and I have no idea what collections school is. I doubtless have read of it at some point, but as no importance has ever been attached to it, I have probably not remembered it. Similarly, I remember slices simply because they are handy, not because I have ever heard of them being fundamental before. (I don't argue their fundamentalness one way or other, it's just that you seem to think that all people who have learned Python have some knowledge of this hugely important feature). The other problem with your use of the quote is that the smartness of the average programmer, or their ability to understand the feature, is not in question. It is their ability to know of the existence of the feature, or to find out about it. As a general rule of thumb, I would say that if a person is struggling with a language, it is primarily a problem with the language, and than problem with the documentation, and lastly a problem with the person. Ed -- http://mail.python.org/mailman/listinfo/python-list
Re: Question about idioms for clearing a list
Steve Holden wrote: While the sentiment behind the list.clear() suggestion is noble, it is an exercise in futility to design a language around the presumption that other programmers are incapable of learning the basics of the language. +1 QOTW There was a pithy Tim Peters quotation to the effect that he was unpersuaded by language proposals predicated on some hypothetical average programmer not being smart enough to understand something that the rest of us find to be basic. Well, for those who can't find it you just provided a fairly pithy Raymond Hettinger quote :-) for the record, the original quote is: The of course, while *I* have no problem with this at all, it's surely too much for a lesser being flavor of argument always rings hollow to me. Are you personally confused by the meanings for + that exist today? *Objecting* to the variations is a different story; I'm wondering whether you personally stumble over them in practice. I don't; Steven doesn't; I doubt that you do either. I'm betting that almost *nobody* ever does, in which case those less nimble colleagues and students must be supernaturally feeble to merit such concern. -- Tim Peters, 29 Apr 1998 /F -- http://mail.python.org/mailman/listinfo/python-list
Re: Question about idioms for clearing a list
On 7 Feb 2006 02:02:42 -0800, Ben Sizer [EMAIL PROTECTED] wrote: Fred is exactly correct. Slicing is absolutely basic to Python. Accordingly, it gets covered right at the beginning of the tutorial (section 3.1). Yes, right after UTF encoding details, complex numbers, and various mentions of shell scripts. Now that is GPotD (Good Point of the Day) which is much better than QotW as it's actually useful. I don't want to criticise the hard work that went into making the tutorial but let's not pretend it's the epitome of documentation or even necessary the most obvious reference for users. Likewise, the del keyword is fundamental -- if you can't get, set, and del, then you need to go back to collections school. I have hardly used the del keyword in several years of coding in Python. Why should it magically spring to mind in this occasion? Similarly I hardly ever find myself using slices, never mind in a mutable context. del L[:] is not obvious, especially given the existence of clear() in dictionaries. I'm not necessarily requesting a clear() method, but I am requesting a little more understanding towards those who expected one. The list interface is full of redundant convenience methods, so one more would hardly be a surprise or an unreasonable thing for people to expect. Again we unfortunately have a bit of an attitude problem towards anyone posting here that doesn't know whatever the experts think is obvious. I agree wholeheartedly with this, particularly as there often seems to be strong (and confusing) resistance to making Python easier and more obvious. I can only assume that it is by people who have forgotten what it is like to be an average programmer. (Paul Graham constantly makes the same mistake when he goes on about how everyone should use lisp). Ed -- http://mail.python.org/mailman/listinfo/python-list
Re: how to kill a python process?
Hi Jorgen THanks for your help. I began writing a wrapper around python did (as Donn suggested), but then noticed that this was due to not having educated myself on the options you can pass to ps, pidof and top: running pidof -x and using the 'c' command in top work pretty nicely. That way I no longer see 23 'pythons' in the system : ) and know which one to stop. Mack -- http://mail.python.org/mailman/listinfo/python-list
Re: Question about idioms for clearing a list
Ed Singleton wrote: I'm a fairly average programmer (better than average compared to my immediate colleagues). I've read every tutorial I can get my hands on, but I have no _memory_ of ever coming across the del keyword, let alone that it is fundamental to Python, and I have no idea what collections school is. I doubtless have read of it at some point, but as no importance has ever been attached to it, I have probably not remembered it. I'm probably below average as a programmer, except when compared with my immediate colleagues [1]. I wrote an extremely simple (albeit non-conventional) tutorial on learning how to program with Python, partly as a means to learn Python myself. (Google for rur-ple if you are curious.) I introduced del shortly after I introduced lists. I think it is important that one learns at least a couple of example usage of every Python keyword as soon as possible, before attempting to write complicated programs. The same probably goes for built-in functions. André [1] Because I have none. -- http://mail.python.org/mailman/listinfo/python-list
Re: Accessing Windows Serial Port
On 2006-02-07, malv [EMAIL PROTECTED] wrote: Hi All, Would anybody know whether PySerial would work over an usb/serial adapter? Yes. (what about usb/parallel adapters?) Don't know. -- Grant Edwards grante Yow! I'm an East Side at TYPE... visi.com -- http://mail.python.org/mailman/listinfo/python-list
Re: variables preceeded with @
Thomas Girod wrote: Hello there. I recently started looking at turbogears and I found code such as : class Root(controllers.Root): @turbogears.expose(html=blog.templates.accueil) def index(self,**kw): return dict() What is this @ ? I looked around but couldn't find any references to this syntax. It is called a decorator syntax, and is basically syntactic sugar for the following: class Foo(object): def bar(self): pass bar = decorate(bar) is class Foo(object): @decorate def bar(self): pass You can also have parameterized decorators, as the ones in TG: class Foo(object): def bar(self): pass bar = decorate_with_args(some argument)(bar) is class Foo(object): @decorate_with_args(some argument) def bar(self): pass I suggest you read this to get on speed with decorators: http://www.phyast.pitt.edu/~micheles/python/documentation.html Regards, Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: Question about idioms for clearing a list
Arthur wrote: My ability to grok Python to any extent, from that starting point, was based on an understanding that it was my responsibility to come to Python, not it to me. And concerted, almost obsessive effort, And time. OTOH - because of exactly these factors - I have actively resented and resisted promulgation of the Python is Easy meme. Pity that this stance has separated me from a sense of belonging to the community, which seems to so highly value that meme. What Python *is*, to me, is a game worth playing. Not something I come across all that often. And easy games, almost invariably, are not. Art -- http://mail.python.org/mailman/listinfo/python-list
Re: * 'struct-like' list *
Thanks for the approach. I decided to use regular expressions. I'm going by the code you posted (below). I replaced the line re.findall line with my file handle read( ) like this: print re.findall(pattern, myFileHandle.read()) This prints out only brackets []. Is a 're.compile' perhaps necessary ? Raymond Hettinger wrote: # Approach for more loosely formatted inputs import re pattern = '''(?x) Name:\s+(\w+)\s+ Age:\s+(\d+)\s+ Birthday:\s+(\d+)\s+ SocialSecurity:\s+(\d+) ''' print re.findall(pattern, inputData) -- http://mail.python.org/mailman/listinfo/python-list
Re: Natural Language Date Processing.
On 7 Feb 2006 05:51:40 -0800, [EMAIL PROTECTED] It seems that the string to be parsed has to be provided in the GNU date format. One option would be to provide a function that calls out to the the GNU date program with whatever string you want to parse. Actually, I looked at the source of the php function and it manually parses it (i assume according to the GNU date rules). However, i'd prefer not to have to port the function to python if someone else has already done so, or has a more pythonic implementation. -- Andrew Gwozdziewycz [EMAIL PROTECTED] http://ihadagreatview.org http://plasticandroid.org -- http://mail.python.org/mailman/listinfo/python-list
Re: Numeric and matlab
A convincing experience is to 'translate' some substantial matlab matrix code into python. You will at once see the difference between a true programming language and matlab Further, also look at matplotlib. malv -- http://mail.python.org/mailman/listinfo/python-list
Re: * 'struct-like' list *
Ernesto wrote: Thanks for the approach. I decided to use regular expressions. I'm going by the code you posted (below). I replaced the line re.findall line with my file handle read( ) like this: print re.findall(pattern, myFileHandle.read()) This prints out only brackets []. Is a 're.compile' perhaps necessary ? if you see [] that means findall didn't find anything that would match your pattern if you re.compile your pattern beforehand that would not make findall find the matched text it's only there for the optimization consider lines = [line for line in file(foo.txt).readlines() if re.match(r\d+,line)] in this case it's better to pre-compile regexp one and use it to match all lines number = re.compile(r\d+) lines = [line for line in file(foo.txt).readlines() if number.match(line)] fire interactive python and play with re and patterns speaking from own experience ... the propability is against you that you will make pattern right on first time Regards, Daniel -- http://mail.python.org/mailman/listinfo/python-list
Re: Question about idioms for clearing a list
I'm a fairly average programmer (better than average compared to my immediate colleagues). I've read every tutorial I can get my hands on, but I have no _memory_ of ever coming across the del keyword, let alone that it is fundamental to Python, My thought is that get/set/del are fundamental ops in almost any computing context: songs on your iPod playlist, records in a database, files in a directory, or elements in a Python list. Individual element deletion doesn't seem to come-up as much in Python because we tend to build data collections and then throw them away in their entirity. However, the concept becomes more prominent when dealing with persistence or when mutating a collection in-place. The OP was specifically seeking to do in-place modifications and so found himself in need of understanding the del-statement. IMHO, it goes with the territory. Similarly, I remember slices simply because they are handy, not because I have ever heard of them being fundamental before. FWIW, I regard slices to be fundamental to the language not because they are easy or that everyone automatically knows about them; rather, I am just recognizing that the concept of slices pervades the language and comes up in many different guises. It is a lesson that should not be skipped. That is why I think that the OP's problem is better solved by improved documentation than by adding an unnecessary method to the list API. As a general rule of thumb, I would say that if a person is struggling with a language, it is primarily a problem with the language, and than problem with the documentation, and lastly a problem with the person. I would swap the first two. No language has yet been invented (including HTML and LOGO) that someone doesn't struggle with. In contrast, no documentation has ever been written that couldn't be improved. The problem with the person part goes last only because it suggests immutability. The reality is that incomplete learning is a fixable problem (independent of language or doc issues). If I never learn the del-statement, should I be surprised that I stuggle with how to express deletion? Raymond -- http://mail.python.org/mailman/listinfo/python-list
Regular Expression Syntax Help
I'm trying to get the right syntax for my regular expression. The string I'm trying to parse is: # myString [USELESS DATA] Name: David Dude [USELESS DATA] Right now, I'm using the following code: pattern_Name= '''(?x) Title:\s+(\w+)\s+ ''' names = re.findall(pattern_Name, myString) print names This prints out a list containing only the first names. I want to search the string until it finds a '\n' endline, but I experimented with that, and couldn't find what I need. -- http://mail.python.org/mailman/listinfo/python-list
Re: winguiauto
Thanks Simon. I looked at the other two and ended up using your version unmodified as the changes in watsup and pywinauto dealt with things unique to their needs. Your code still addresses basic needs and rather well at that. Regards -- http://mail.python.org/mailman/listinfo/python-list
Re: variables preceeded with @
Yum, food for thoughts. Thanks Diez. -- http://mail.python.org/mailman/listinfo/python-list
Uses of The 4th Dimension (New Discovery by The Human Race!)
Uses of The 4th Dimension (New Discovery by The Human Race!) - Note Before: Everything you read on this page is The Truth. What does this mean? It means, if you try to do what is written here: EXAMPLE: If you just make a wish, it will be granted in The 4th Dimension for you to enjoy there. You have nothing to lose. - Since I discovered The 4th Dimension, one of the conclusions I have reached is, The 4th Dimension is an infinite access to The Truth. Throughout this website, I use the term I wish - it is really a way to voice a person's desire - and from the work I have done - it really works. From the saying: Ask and you shall receive, I have understood that any human being can make an infinity of wishes and receive The Truth (the correct answer) to every question they may have, in the form of a dream - that same night. META-PHYSICISTS CALL THIS TECHNIQUE: PROGRAMMING YOUR SLEEP. -- With this method, the saying becomes: Ask (FOR THE TRUTH) and you shall receive (THE TRUTH IN THE FORM OF A DREAM THAT NIGHT)! What does this mean? It means you can receive THE TRUTH to any question you have in your heart - answered FREE while you sleep, you wake up in the morning wiser because you have understood The Truth you asked for! It's like getting 100% to every quiz or test in school, because a teacher really requires THE CORRECT ANSWER or The Truth to the questions on the quiz/test! What is 1+1? The Truth:2. - From my research, I have also seen that other people have also known about this dimension and have kept silent about it. They have been conducting activities that I will term criminal, this is why I have included a tract for Law Enforcement, so that they can become aware that this dimension exists and they can use it as a tool to acquire The Truth to solve any and all crimes. - Use The 4th Dimension to find your soulmate This is very easy to do - all you need to know is The Truth of WHO your soulmate is. To find your soulmate, do the following: - Say this out loud before you go to sleep: I WISH TO KNOW THE TRUTH: WHO IS MY SOULMATE? - Go to sleep and you will get The Truth in the form of a dream that night. Once you find out The Truth, why waste anymore time? When you wake up, go find him or her and be happy. - What if your soulmate is in another country or far away? No ProblemUse The 4th Dimension to make contact.. that is, use it like a telephone or a chat room. Here's how... Once you find out WHO your soulmate is, contact his/her mind via The 4th Dimension in this way: - Say this out loud before you go to sleep: I WISH TO MEET MY SOULMATE. - Go to sleep and you will meet THE MIND of your soulmate THAT NIGHT in the form of a dream. What does this mean? It means you are ACTUALLY SPEAKING MIND - TO - MIND with your soulmate, so when you wake up in the morning (that is, your minds re-enter your physical bodies) you remember your meeting - it really took place! Keep meeting in this way until you can meet in the physical world. - Use The 4th Dimension to NEVER BE LIED TO AGAIN This is one of the best benefits of using The 4th Dimension. You can use it to stop a lie, before it takes root in your mind. If a lie takes root in a person's mind, that person is manipulated by that lie and the liar. Lies also wastes a person's time and energy. To stop ALL LIES before they take root, do the following: Say this out loud before you go to sleep: I WISH TO KNOW THE TRUTH: IS [ INSERT NAME OF PERSON HERE ] LYING TO ME? Go to sleep and you will receive The Truth about your question that night. This tool is invaluable, because it helps you understand the motive of anything presented to you in the physical world (3rd Dimension). - Use The 4th Dimension as a University [ get an education ] You can know and learn anything and everything (no matter how old you are ), your heart desires - FREE - the important thing is - is that you are learning The Truth abouut any matter or subject. You can learn and understand: Physics, Mathematics, Science, Engineering, Botany, Medicine, etc All you have to
Re: * 'struct-like' list *
Thanks ! -- http://mail.python.org/mailman/listinfo/python-list
Re: Regular Expression Syntax Help
The word Title there should be Name. What I really need is the pattern for getting the entire string after Name: until a '\n' is found. -- http://mail.python.org/mailman/listinfo/python-list
Re: in over my head ascii
ok, i am stuck again. from the docs, the byte stream is supposed to look like this: 'S' 'T' 'X' [length indicator] [message type] [message] 'E' 'N' 'X' the length indicator it says is a four byte integer number of a value N ( N would be how long the message body is ) the message type comes from a table in the docs. In my case, the message type is 200. This is also supposed to be sent as a 4 byte value. so. how do i make 200 occupy 4 bytes ? -- http://mail.python.org/mailman/listinfo/python-list
Re: Detecting line endings
On 6 Feb 2006 06:35:14 -0800, Fuzzyman [EMAIL PROTECTED] wrote:
Hello all,
I'm trying to detect line endings used in text files. I *might* be
decoding the files into unicode first (which may be encoded using
multi-byte encodings) - which is why I'm not letting Python handle the
line endings.
Is the following safe and sane :
text = open('test.txt', 'rb').read()
if encoding:
text = text.decode(encoding)
ending = '\n' # default
if '\r\n' in text:
text = text.replace('\r\n', '\n')
ending = '\r\n'
elif '\n' in text:
ending = '\n'
elif '\r' in text:
text = text.replace('\r', '\n')
ending = '\r'
My worry is that if '\n' *doesn't* signify a line break on the Mac,
then it may exist in the body of the text - and trigger ``ending =
'\n'`` prematurely ?
Are you guaranteed that text bodies don't contain escape or quoting
mechanisms for binary data where it would be a mistake to convert
or delete an '\r' ? (E.g., I think XML CDATA might be an example).
Regards,
Bengt Richter
--
http://mail.python.org/mailman/listinfo/python-list
Re: Collecting snmp data - threads, processes, twisted?
Antal Rutz wrote: ... I'd like to collect snmp data from varoius network devices parallel. ... Could you give me some advice how can I make my script really parallel? My options maybe: 1. pySNMP (as it's full in python) 2. subprocess (I'd like to make (find) a solution as threadpool.py) (running yapsnmp, pySNMP or even net-snmp?...) 3. TwistedSNMP (seems too weird for me.. cannot imagine a simple solution for my problem) This kind of parallel mass-query operation is TwistedSNMP's primary focus (it was created for a commercial product that scans thousands of agents). If you really want all of the queries to run in parallel (i.e. send out all the queries within milliseconds of each other): agents = [ ... ] dl = [] for agent in agents: dl.append( agent.get( (oid,oid,oid) ) ) return defer.DeferredList( dl ) add a callback to the DeferredList which processes the (success,result_or_failure) list you get back. If you want to process individual results/failures before the whole set returns, add the callback for that to the agent.get() result. If you have thousands of devices you'll likely want to batch the queries into ~ 200 simultaneous queries and/or use multiple protocols (gives you more OS-level buffering). Have fun, Mike Mike C. Fletcher Designer, VR Plumber, Coder http://www.vrplumber.com http://blog.vrplumber.com -- http://mail.python.org/mailman/listinfo/python-list
The problem of anonymity with decorators
Dear all,
I would like to work around the anonymizing effect of decorators when
an exception is raised in the wrapped function. Let's consider the
following example:
def int_result (fun) :
def wrapped (*largs, **kwargs) :
result = fun(*largs, **kwargs)
if not isinstance(result, int) :
raise TypeError, should return int
return result
return wrapped
@int_result
def add (a, b) :
return a+b
print add(1, 2)
print add(foo, bar)
As expected, the last line results in raising TypeError:
Traceback (most recent call last):
File wrapping.py, line 14, in ?
print add(foo, bar)
File wrapping.py, line 5, in wrapped
raise TypeError, should return int
TypeError: should return int
My problem is that the errors comes from a function named wrapped
while I'd prefer to see here the name of the wrapped function. Indeed,
the code above is only a stripped down sample code but in my
application, I'll have a lot of functions, all wrapped the same way. So
I'd prefer a traceback like:
Traceback (most recent call last):
File wrapping.py, line 14, in ?
print add(foo, bar)
File wrapping.py, line 8, in add (wrapped)
@int_result
TypeError: should return int
Where the exception seems to come from the point where add was
wrapped, instead of from the inside of the wrapper.
I tried to change wrapper.__name__ and wrapper.func_name but it does not
change the traceback, and wrapper.func_code.co_name is read-only. I also
tried, unsuccessfully, to rename functions with:
import new
def rename (fun, name) :
return new.function(fun.func_code, {}, name)
So, my questions:
- can I change a function name so that it affects the traceback when an
exception is raised in the function?
- is there some special trick to raise an exception making it, in
appearance, coming from somewhere else?
Thanks in advance for any answer.
Regards,
Franck
--
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Re: Detecting line endings
Fuzzyman [EMAIL PROTECTED] wrote: ... Open the file with 'rU' mode, and check the file object's newline attribute. Do you know if this works for multi-byte encodings ? Do files have You mean when you open them with the codecs module? metadata associated with them showing the line-ending in use ? Not in the filesystems I'm familiar with (they did use to, in filesystems used on VMS and other ancient OSs, but that was a very long time ago). Alex -- http://mail.python.org/mailman/listinfo/python-list
Re: Natural Language Date Processing.
From the docs for PHP's 'strtotime' Parameters time The string to parse, according to the GNU Date Input Formats syntax. Before PHP 5.0, microseconds weren't allowed in the time, since PHP 5.0 they are allowed but ignored. ... It seems that the string to be parsed has to be provided in the GNU date format. One option would be to provide a function that calls out to the the GNU date program with whatever string you want to parse. I'm not aware of an existing function in Python that does this. Regards, Andy -- http://mail.python.org/mailman/listinfo/python-list
Re: jython problem importing a py file
didier.prophete writes: I tried everything I could think of (playing with the __init__.py, the PYTHONCLASS, the CLASSPATH), but nothing seems to work... I am doing something wrong here ? -Didier Take a look at the jython registry setting python.path: http://www.jython.org/docs/registry.html So if you invoke jython with say: jython -Dpython.path=$TOP your import should work. - kz -- http://mail.python.org/mailman/listinfo/python-list
Re: Detecting line endings
Bengt Richter wrote:
On 6 Feb 2006 06:35:14 -0800, Fuzzyman [EMAIL PROTECTED] wrote:
Hello all,
I'm trying to detect line endings used in text files. I *might* be
decoding the files into unicode first (which may be encoded using
multi-byte encodings) - which is why I'm not letting Python handle the
line endings.
Is the following safe and sane :
text = open('test.txt', 'rb').read()
if encoding:
text = text.decode(encoding)
ending = '\n' # default
if '\r\n' in text:
text = text.replace('\r\n', '\n')
ending = '\r\n'
elif '\n' in text:
ending = '\n'
elif '\r' in text:
text = text.replace('\r', '\n')
ending = '\r'
My worry is that if '\n' *doesn't* signify a line break on the Mac,
then it may exist in the body of the text - and trigger ``ending =
'\n'`` prematurely ?
Are you guaranteed that text bodies don't contain escape or quoting
mechanisms for binary data where it would be a mistake to convert
or delete an '\r' ? (E.g., I think XML CDATA might be an example).
My personal use case is for reading config files in arbitrary encodings
(so it's not an issue).
How would Python handle opening such files when not in binary mode ?
That may be an issue even on Linux - if you open a windows file and
use splitlines does Python convert '\r\n' to '\n' ? (or does it leave
the extra '\r's in place, which is *different to the behaviour under
windows).
All the best,
Fuzzyman
http://www.voidspace.org.uk/python/index.shtml
Regards,
Bengt Richter
--
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Re: Regular Expression Syntax Help
try this. maybe this is what you want?
reg = re.compile('Name:.*\\n', re.IGNORECASE)
--
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Re: Best way of finding terminal width/height?
On 2006-02-07, Joel Hedlund [EMAIL PROTECTED] wrote: As before, the only IO case above that doesn't throw exceptions is the uncommented one. Yup, that's the exception. Standard practice is to catch it and retry the I/O operation. Hmm... I guess it's not that easy to retry IO operations on pipes and streams (stdin/stdout in this case)... You just call the failed read() or write() again. Unless there's some way that the read/write partially succeeded and you don't have any way to know how many bytes were read/written, If that's the case then Python's file object read and write would appear to be broken by design. And I tend to lean pretty heavily on those since I usually write UNIX style text filters. So in case I haven't missed something fundamental I guess my best option is to accept defeat (of sorts :-) and be happy with picking a terminal width at program startup. But anyway, it's been really interesting trying this out. Thank you Grant (och Jorgen) for all help and tips! -- Grant Edwards grante Yow! BRILL CREAM is at CREAM O' WHEAT in another visi.comDIMENSION... -- http://mail.python.org/mailman/listinfo/python-list
Re: Literal Escaped Octets
On Mon, 06 Feb 2006 04:40:31 GMT, Chason Hayes [EMAIL PROTECTED] wrote: I am trying to convert raw binary data to data with escaped octets in order to store it in a bytea field on postgresql server. I could do this easily in c/c++ but I need to do it in python. I am not sure how to read and evaluate the binary value of a byte in a long string when it is a non printable ascii value in python. I read some ways to use unpack from the struct module, but i really couldn't understand where that would help. I looked at the MIMIEncode module but I don't know how to convert the object to a string. Is there a module that will convert the data? It seems to me that this question must have been answered a million times before but I can't find anything. Have you considered just encoding the data as text in hex or base64, e.g., import binascii s = '\x00\x01\x02\x03ABCD0123' binascii.hexlify(s) '000102034142434430313233' binascii.b2a_base64(s) 'AAECA0FCQ0QwMTIz\n' which is also reversible later of course: h = binascii.hexlify(s) binascii.unhexlify(h) '\x00\x01\x02\x03ABCD0123' b64 = binascii.b2a_base64(s) binascii.a2b_base64(b64) '\x00\x01\x02\x03ABCD0123' Regards, Bengt Richter -- http://mail.python.org/mailman/listinfo/python-list
Re: Natural Language Date Processing.
Andrew Gwozdziewycz wrote: I've been looking recently for date processing modules that can parse dates in forms such as next week or 6 days from next sunday. This is, in fact, a fairly difficult problem in general. See the TERN_ competition that's currently held yearly on this task. There are a few taggers available that do this at: http://timex2.mitre.org/taggers/timex2_taggers.html But none of them are available as Python modules. You might be able to port the Perl script there, but it won't do as well as the ATEL program from CU which uses machine learning techniques. .. _TERN: http://timex2.mitre.org/tern.html STeVe -- http://mail.python.org/mailman/listinfo/python-list
Re: The problem of anonymity with decorators
Franck Pommereau [EMAIL PROTECTED] wrote:
...
import new
def rename (fun, name) :
return new.function(fun.func_code, {}, name)
You need to make a new code object too:
def int_result(fun) :
def wrapped(*largs, **kwargs) :
result = fun(*largs, **kwargs)
if not isinstance(result, int) :
raise TypeError, should return int
return result
w = wrapped.func_code
c = new.code(w.co_argcount, w.co_nlocals, w.co_stacksize,
w.co_flags, w.co_code, w.co_consts, w.co_names,
w.co_varnames, w.co_filename, fun.func_name,
w.co_firstlineno, w.co_lnotab,
w.co_freevars, w.co_cellvars)
return new.function(c, fun.func_globals, fun.func_name,
fun.func_defaults, wrapped.func_closure)
Of course, you should refactor these last three statement into a
def remix(wrapped, fun): ...
return a function like 'wrapped' but w/name and defaults fm 'fun'
...same 3 statements as above, from w = ... onwards...
Alex
--
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Dual Core outlook
Multiprocessing has been pushed into the field as the chip manufacturers can no longer deliver as they were used to for many years. The general public has been conditioned to believe that 1 + 1 = 2 but this is in fact not that simple. Although software manufacturers can with some effort adapt packages to exploit these dual core architectures, the same is not true for other development work were no large distribution of the application is to take place. What is the outlook for programming languages in general? Of course, multiprocessing has been used for many years but this always involved a much higher level of sophistication on the part of the designers. This point seems to be largely hidden from the public, ignorant and semi-ignorant, by the chip manufacturers. Will new languages see the light rendering the spreading of applications over many processors quasi transparent? What is the outlook for Python? Would Ironpython with .net do better? What about talk by the Java lobby that Java would be very much suited for taking advantage of dual-core? Is there any thruth to this? These are questions that many Python users like myself would like to find some answers for. One thing is clear. The old days will never come back and the processor multiplication is likely to increase. malv -- http://mail.python.org/mailman/listinfo/python-list
Re: Question about idioms for clearing a list
Ben Sizer wrote: Likewise, the del keyword is fundamental -- if you can't get, set, and del, then you need to go back to collections school. I have hardly used the del keyword in several years of coding in Python. Why should it magically spring to mind in this occasion? Similarly I hardly ever find myself using slices, never mind in a mutable context. I just grepped through my codebase, and while I do see a number of dels with dicts, and a number of dels with instance attributes, I see only two dels with lists, both from the same module. So I think your point about infrequent use of del, at least with lists, is pretty valid. I suspect this is reinforced by the fact that del is usually not the right way to go when using lists -- repeated dels in the middle of a list is almost always less efficient than other techniques due to the underlying array implementation. That said, I didn't find anywhere in my codebase that I needed to clear a list (i.e. where ``L = []`` wasn't perfectly fine), while I do find a small number of dict clears. So I guess I don't really care if clearing a list is a little less intuitive than clearing a dict. STeVe -- http://mail.python.org/mailman/listinfo/python-list
Is Python good for web crawlers?
I was wondering if python is a good language to build a web crawler with? For example, to construct a program that will routinely search x amount of sites to check the availability of a product. Or to search for news articles containing the word 'XYZ'. These are just random ideas to try to explain my question a bit further. Well if you have an opinion about this please let me know becasue I am very interested to hear what you have to say. Thanks. -- http://mail.python.org/mailman/listinfo/python-list
problem with opening Python IDLE
I'm having trouble with opening the python IDLE-program. When I try to start it, it gives an errormessage wich states that it can not make a connection, possibly because of a firewall. However, adding it to firewalls exeptions or even disabeling the firewall has no effect. These are the errors: 1st. 'Socket error: Connection refused', with the name IDLE subprocess Error 2nd. 'IDLE's subprocess didn't make connection. Either IDLE can't start a subprocess or personal firewall software is blocking the connection. The program I am trying to use is included with this message (it's purpose is to get a letter from the user and then pick a letter two places forward in the line, alphabetical order). Bennie Tilma [EMAIL PROTECTED] _ Typ je SMS sneller binnen MSN Messenger http://www1.imagine-msn.com/Messenger/Expressions.aspx letter = -1 letter_number = 0 message = [] print 'this program converts all letters into two letters forward' print 'type 0(zero) to stop and show the message' while letter != 'stop': letter = raw_input(type a letter: ) if letter == 'a': letter_number = 1 if letter == 'b': letter_number = 2 if letter == 'c': letter_number = 3 if letter == 'd': letter_number = 4 if letter == 'e': letter_number = 5 if letter == 'f': letter_number = 6 if letter == 'g': letter_number = 7 if letter == 'h': letter_number = 8 if letter == 'i': letter_number = 9 if letter == 'j': letter_number = 10 if letter == 'k': letter_number = 11 if letter == 'l': letter_number = 12 if letter == 'm': letter_number = 13 if letter == 'n': letter_number = 14 if letter == 'o': letter_number = 15 if letter == 'p': letter_number = 16 if letter == 'q': letter_number = 17 if letter == 'r': letter_number = 18 if letter == 's': letter_number = 19 if letter == 't': letter_number = 20 if letter == 'u': letter_number = 21 if letter == 'v': letter_number = 22 if letter == 'w': letter_number = 23 if letter == 'x': letter_number = 24 if letter == 'y': letter_number = 25 if letter == 'z': letter_number = 26 if letter == ' ': letter_number = 0 alphabet = [' ','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z','a','b'] print 'the letter is: ', alphabet[letter_number] message.append(alphabet[letter_number]) print message -- http://mail.python.org/mailman/listinfo/python-list
Re: Is Python good for web crawlers?
On 7 Feb 2006 08:33:28 -0800, Tempo [EMAIL PROTECTED] wrote: I was wondering if python is a good language to build a web crawler with? For example, to construct a program that will routinely search x amount of sites to check the availability of a product. Or to search for news articles containing the word 'XYZ'. These are just random ideas to try to explain my question a bit further. Well if you have an opinion about this please let me know becasue I am very interested to hear what you have to say. Thanks. Google supplies a basic webcrawler as a google desktop plugin called Kongulo (http://sourceforge.net/projects/goog-kongulo/) which is written in python. I would think python would be perfect for this sort of application. Your bottleneck is always going to be downloading the page. -- Andrew Gwozdziewycz [EMAIL PROTECTED] http://ihadagreatview.org http://plasticandroid.org -- http://mail.python.org/mailman/listinfo/python-list
Too Many if Statements?
Hi - I'm running Python 2.4.2 (#67, Sep 28 2005, 12:41:11) [MSC v.1310 32 bit (Intel)] on win32, and have a script that makes numerous checks on text files, (configuration files), so discrepancies can be reported. The script works fine but it appears that I may have hit a wall with 'if' statements. Due to the number of checks perfromed by the script on the text files, (over 500), there are quite a few 'if' statements in the script, (over 1150). It seems that it is at the point that when I add any additional 'if' statements the script will not run. No error is produced - it just returns to the python prompt much the same as when a successful 'Check Module' command is selected. If I delete some other 'if' statements the new ones work so it appears that it has hit a limit on the number of 'if' statements. This has stunted any further checks for the script to make on the text files. Hs anyone ever run into this sort of thing? -- http://mail.python.org/mailman/listinfo/python-list
Re: The problem of anonymity with decorators
Using my decorator module (http://www.phyast.pitt.edu/~micheles/python/documentation.html, http://www.phyast.pitt.edu/~micheles/python/decorator.zip) you solve the problem of the name, but the traceback is still not perfect. You get: # dec_traceback.py from ms.decorator import decorator @decorator def int_result (fun, *largs, **kwargs) : result = fun(*largs, **kwargs) if not isinstance(result, int) : raise TypeError, should return int return result @int_result def add (a, b) : return a+b print add(1, 2) print add(foo, bar) # end dec_traceback.py $ python dec_traceback.py 3 Traceback (most recent call last): File dec_traceback.py, line 15, in ? print add(foo, bar) File string, line 2, in add File dec_traceback.py, line 7, in int_result raise TypeError, should return int TypeError: should return int The reason of string is that the module internally uses 'exec'. There should be a way around that, anyway, but I have no time to check it right now. Still, the module may be of inspiration to you. Michele Simionato -- http://mail.python.org/mailman/listinfo/python-list
sys.path and unicode folder names
Hello, Is there a solution or a work around for the sys.path problem with unicode folder names on Windows XP? I need to be able to import modules from a folder with a non-ascii name. Thanks, Nir -- http://mail.python.org/mailman/listinfo/python-list
Re: Detecting line endings
Alex Martelli wrote: Fuzzyman [EMAIL PROTECTED] wrote: ... Open the file with 'rU' mode, and check the file object's newline attribute. Do you know if this works for multi-byte encodings ? Do files have You mean when you open them with the codecs module? No, if I open a UTF16 encoded file in universal mode - will it still have the correct lineending attribute ? I can't open with a codec unless an encoding is explicitly supplied. I still want to detect UTF16 even if the encoding isn't specified. As I said, I ought to test this... Without metadata I wonder how Python determines it ? All the best, Fuzzyman http://www.voidspace.org.uk/python/index.shtml metadata associated with them showing the line-ending in use ? Not in the filesystems I'm familiar with (they did use to, in filesystems used on VMS and other ancient OSs, but that was a very long time ago). Alex -- http://mail.python.org/mailman/listinfo/python-list
python-ldap
y0! where can i get module of python-ldap to work with eclipse ide on windows? tks! -- http://mail.python.org/mailman/listinfo/python-list
python-ldap
y0! where can i get module of python-ldap to work with eclipse ide on windows? tks! -- http://mail.python.org/mailman/listinfo/python-list
python-ldap
y0! where can i get module of python-ldap to work with eclipse ide on windows? tks! -- http://mail.python.org/mailman/listinfo/python-list
Re: Natural Language Date Processing.
Andrew Gwozdziewycz schrieb: I've been looking recently for date processing modules that can parse dates in forms such as next week or 6 days from next sunday. PHP has a function that will do this called 'strtotime', but I have not found a Python implementation. I've check the standard date, datetime and time modules and also mx.Date* modules. Am I overlooking something here or does it not exist? Anyone know of an implementation? Also, I realize that this is perhaps very English specific so I apologize to any non-native English speakers. --- Andrew Gwozdziewycz [EMAIL PROTECTED] http://ihadagreatview.org http://plasticandroid.org You may take a look at http://labix.org/python-dateutil Have fun Michael -- http://mail.python.org/mailman/listinfo/python-list
Re: Dual Core outlook
malv wrote: Of course, multiprocessing has been used for many years but this always involved a much higher level of sophistication on the part of the designers. This point seems to be largely hidden from the public, ignorant and semi-ignorant, by the chip manufacturers. Will new languages see the light rendering the spreading of applications over many processors quasi transparent? What is the outlook for Python? Would Ironpython with .net do better? What about talk by the Java lobby that Java would be very much suited for taking advantage of dual-core? Is there any thruth to this? Python has support for OS threads, but it also has the GIL (a global lock from the interpreter). This means that Python behaves the same way Java or C# do as far as threads are concerned but for one field: multiprocessor (or multicore) situations. While C# or Java can execute two threads of the same process on two separate cores/processors Python can't. This means that you can't choke a multiprocessor/multicores machine with Python threads, and that if you want to scale in a multiprocessor/multicore environment (e.g. make use of all the available cores/processors) you have to use processes not threads (e.g. you have to launch multiple instances of the Python interpreter, each one having the ability to execute on a different core/processor). Now the question is: do you want to do it? Do you have several extremely demanding computational threads? If yes, then Python probably isn't what you need (unless you implement your computations in specific C modules and get rid of the GIL issue). If not (a single computational thread and several low-resources GUI/network/whatever threads), it's a non-issue. -- http://mail.python.org/mailman/listinfo/python-list
Is the Python types module superfluous?
Travis Oliphant wrote: Gerard Vermeulen wrote: On Wed, 01 Feb 2006 11:15:09 -0500 Colin J. Williams [EMAIL PROTECTED] wrote: [ currently numpy uses ndarray, with synonym ArrayType, for a multidimensional array ] [Dbg] import types [Dbg] dir(types) ['BooleanType', 'BufferType', 'BuiltinFunctionType', 'BuiltinMethodType', 'ClassType', 'CodeType', 'ComplexType', 'DictProxyType', 'DictType', 'DictionaryType', 'EllipsisType', 'FileType', 'FloatType', 'FrameType', 'FunctionType', 'GeneratorType', 'Instance Type', 'IntType', 'LambdaType', 'ListType', 'LongType', 'MethodType', 'ModuleType', 'NoneType', 'NotImplementedType', 'ObjectType', 'SliceType', 'StringType', 'StringTypes', 'TracebackType', 'TupleType', 'TypeType', 'UnboundMethodType', 'UnicodeType', 'XRan geType', '__builtins__', '__doc__', '__file__', '__name__'] [Dbg] Isn't the types module becoming superfluous? That's the point I was trying to make. ArrayType is to ndarray as DictionaryType is to dict. My understanding is that the use of types.DictionaryType is discouraged. -Travis I was simply trying to suggest that the name ArrayType is more appropriate name that ndbigarray or ndarray for the multidimensional array. Since the intent is, in the long run, to integrate numpy with the Python distribution, the use of a name in the style of the existing Python types would appear to be better. Is the types module becoming superfluous? I've cross posted to c.l.p to seek information on this. Colin W. -- http://mail.python.org/mailman/listinfo/python-list
Re: Too Many if Statements?
slogging_away wrote:
Hi - I'm running Python 2.4.2 (#67, Sep 28 2005, 12:41:11) [MSC v.1310
32 bit (Intel)] on win32, and have a script that makes numerous checks
on text files, (configuration files), so discrepancies can be reported.
The script works fine but it appears that I may have hit a wall with
'if' statements.
Due to the number of checks perfromed by the script on the text files,
(over 500), there are quite a few 'if' statements in the script, (over
1150). It seems that it is at the point that when I add any additional
'if' statements the script will not run. No error is produced - it
just returns to the python prompt much the same as when a successful
'Check Module' command is selected. If I delete some other 'if'
statements the new ones work so it appears that it has hit a limit on
the number of 'if' statements. This has stunted any further checks for
the script to make on the text files.
Hs anyone ever run into this sort of thing?
Nope - but I never saw any code block with 1150+ tests in it neither :-/
Smells like a design problem anyway. Have you considered refactoring
your code ?
--
bruno desthuilliers
python -c print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in '[EMAIL PROTECTED]'.split('@')])
--
http://mail.python.org/mailman/listinfo/python-list
Re: Too Many if Statements?
slogging_away wrote: Hi - I'm running Python 2.4.2 (#67, Sep 28 2005, 12:41:11) [MSC v.1310 32 bit (Intel)] on win32, and have a script that makes numerous checks on text files, (configuration files), so discrepancies can be reported. The script works fine but it appears that I may have hit a wall with 'if' statements. Due to the number of checks perfromed by the script on the text files, (over 500), there are quite a few 'if' statements in the script, (over 1150). It seems that it is at the point that when I add any additional 'if' statements the script will not run. No error is produced - it just returns to the python prompt much the same as when a successful 'Check Module' command is selected. If I delete some other 'if' statements the new ones work so it appears that it has hit a limit on the number of 'if' statements. This has stunted any further checks for the script to make on the text files. Hs anyone ever run into this sort of thing? I can't say I've run into it before but your description makes me think there are other approaches you could take. Does splitting the large number of if statements into separate functions help at all? If you're checking some text to see if a number of static strings are contained therein, you could put the test strings into a list and loop through...something like this (untested): tests = [ 'looking for this string', 'and this one', 'am i in the text' ] # etc... for test in tests: if test not in text: raise LookupError -- http://mail.python.org/mailman/listinfo/python-list
Re: Too Many if Statements?
I don't consider myself to be a seasoned programmer so if you mean redesigning the script to make the checks and therefore reduce the number of 'if' statements, I'm not sure if that can be done. The script needs to make numerous checks for the existence of particular strings within the configuration file. It also uses 'if' statements to determine what type of file is being examined, etc.. If an error is encounterd it writes warning messages to a master file. I guess what I am trying to say is that in order to make the many checks on the configuration files I do not know of any other way than to check for the existance of particular statements, (strings), and then report on those if they are incorrect or missing - hence at least one 'if' statement for every check. I appreciate the feedback though! -- http://mail.python.org/mailman/listinfo/python-list
Re: Is Python good for web crawlers?
Why do you say that the bottleneck of the crawler will always be downloading the page? Is it becasue there isn't already a modual to do this and I will have to start from scratch? Or a bandwidth issue? -- http://mail.python.org/mailman/listinfo/python-list
Re: Best way of finding terminal width/height?
You just call the failed read() or write() again. Unless there's some way that the read/write partially succeeded and you don't have any way to know how many bytes were read/written, If that's the case then Python's file object read and write would appear to be broken by design. Wow... I tried to set up an example that would fail, and it didn't. It seems the test only fails if I use the keyboard to cram stuff into stdin, and not if stdin is a regular pipe. Could this perhaps be some kind of misbehavior on behalf of my terminal emulator (GNOME Terminal 2.12.0 in Ubuntulinux 5.10)? Example follows: winch.py import signal, os, sys from terminal_info import get_terminal_size terminal_size = get_terminal_size() _bTerminalSizeChanged = False def report_terminal_size_change(signum, frame): global _bTerminalSizeChanged _bTerminalSizeChanged = True def update_terminal_size(): global _bTerminalSizeChanged, terminal_size terminal_size = get_terminal_size() _bTerminalSizeChanged = False signal.signal(signal.SIGWINCH, report_terminal_size_change) # Retry IO operations until successful. io_successful = False while not io_successful: try: s = sys.stdin.read() io_successful = True except IOError: pass io_successful = False while not io_successful: try: sys.stdout.write(s) io_successful = True except IOError: pass /winch.py Then run the prog and pipe a large chunk of text into stdin, and redirect stdout to a file: $ cat /a/large/text/file | python winch.py copy.of.the.large.file Now, what happens for me is exactly what I wanted. I can resize the window as much as I like, and a diff $ diff /a/large/text/file copy.of.the.large.file comes up empty. A perfectly good copy. However, if I do this instead (try to use keyboard to push stuff into stdin): $ python winch.py copy.of.the.large.file I expect python not to return until I press Ctrl-D on my keyboard, but it does return as soon as I enter more than one line of text and then resize the window (one unterminated line is ok). Example text to type in: moo moo cow cow As soon as I have typed in something that includes a newline charater through the keyboard and try to resize the terminal, sys.stdin.read() will return whatever I put in no far and no exception raised. Weird. Could it in fact my terminal that's screwing things up for me? /Joel -- http://mail.python.org/mailman/listinfo/python-list
