Python-URL! - weekly Python news and links (Dec 15)
QOTW: Plus, it's not something that's never foolproof. - Carl Banks, daring negater http://groups.google.com/group/comp.lang.python/msg/e8f3adbf2cc31514 Several graph libraries are available; which one is the best? maybe they should be merged? http://groups.google.com/group/comp.lang.python/t/785d100681f7d101/ http://groups.google.com/group/comp.lang.python/t/7e65ca66cd7b511/ list(generator) and the equivalent list comprehension are not always equivalent: http://groups.google.com/group/comp.lang.python/t/ae70dfa12677c1d5/ A succint way to parse a string of name=value pairs: http://groups.google.com/group/comp.lang.python/t/dc725717e63d6295/ Keep only unique elements in a list - and the perils of wrongly defining __hash__: http://groups.google.com/group/comp.lang.python/t/80491b9bc2f45547/ Python does not have a switch statement - how to overcome that? http://groups.google.com/group/comp.lang.python/t/9af90ddc7652beb0/ What are the advantages of an explicit self? http://groups.google.com/group/comp.lang.python/t/17a3369aef70fd38/ A new guy in the neighborhood, recently moved from PHP: http://groups.google.com/group/comp.lang.python/t/6e91d87a9a3a3edb/ http://groups.google.com/group/comp.lang.python4c295a7ca96f65c3101/ Another convert, this time coming from Perl-land: http://groups.google.com/group/comp.lang.python/t/22edc1c7eef569d5/ Everything Python-related you want is probably one or two clicks away in these pages: Python.org's Python Language Website is the traditional center of Pythonia http://www.python.org Notice especially the master FAQ http://www.python.org/doc/FAQ.html PythonWare complements the digest you're reading with the marvelous daily python url http://www.pythonware.com/daily Just beginning with Python? This page is a great place to start: http://wiki.python.org/moin/BeginnersGuide/Programmers The Python Papers aims to publish the efforts of Python enthusiasts: http://pythonpapers.org/ The Python Magazine is a technical monthly devoted to Python: http://pythonmagazine.com Readers have recommended the Planet site: http://planet.python.org comp.lang.python.announce announces new Python software. Be sure to scan this newsgroup weekly. http://groups.google.com/group/comp.lang.python.announce/topics Python411 indexes podcasts ... to help people learn Python ... Updates appear more-than-weekly: http://www.awaretek.com/python/index.html The Python Package Index catalogues packages. http://www.python.org/pypi/ Much of Python's real work takes place on Special-Interest Group mailing lists http://www.python.org/sigs/ Python Success Stories--from air-traffic control to on-line match-making--can inspire you or decision-makers to whom you're subject with a vision of what the language makes practical. http://www.pythonology.com/success The Python Software Foundation (PSF) has replaced the Python Consortium as an independent nexus of activity. It has official responsibility for Python's development and maintenance. http://www.python.org/psf/ Among the ways you can support PSF is with a donation. http://www.python.org/psf/donations/ The Summary of Python Tracker Issues is an automatically generated report summarizing new bugs, closed ones, and patch submissions. http://search.gmane.org/?author=status%40bugs.python.orggroup=gmane.comp.python.develsort=date Although unmaintained since 2002, the Cetus collection of Python hyperlinks retains a few gems. http://www.cetus-links.org/oo_python.html Python FAQTS http://python.faqts.com/ The Cookbook is a collaborative effort to capture useful and interesting recipes. http://code.activestate.com/recipes/langs/python/ Many Python conferences around the world are in preparation. Watch this space for links to them. Among several Python-oriented RSS/RDF feeds available, see: http://www.python.org/channews.rdf For more, see: http://www.syndic8.com/feedlist.php?ShowMatch=pythonShowStatus=all The old Python To-Do List now lives principally in a SourceForge reincarnation. http://sourceforge.net/tracker/?atid=355470group_id=5470func=browse http://www.python.org/dev/peps/pep-0042/ del.icio.us presents an intriguing approach to reference commentary. It already aggregates quite a bit of Python intelligence. http://del.icio.us/tag/python Enjoy the *Python Magazine*. http://pymag.phparch.com/ *Py: the Journal of the Python Language* http://www.pyzine.com
CodeInvestigator 0.20.0
CodeInvestigator 0.20.0 was released on December 16. Changes: UI changes. You need Python 2.6 and Firefox for CodeInvestigator. CodeInvestigator is a tracing tool for Python programs. Running a program through CodeInvestigator creates a recording. Program flow, function calls, variable values and conditions are all stored for every line the program executes. The recording is then viewed with an interface consisting of the code. The code can be clicked: A clicked variable displays its value, a clicked loop displays its iterations. You read code, and have at your disposal all the run time details of that code. A computerized desk check tool and another way to learn about your program. http://sourceforge.net/project/showfiles.php?group_id=183942 -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations/
[ANN] OpenOpt 0.27 (optimization), FuncDesigner 0.17 (auto differentiation)
Hi all, I'm glad to inform you about release of OpenOpt 0.27 (numerical optimization framework), FuncDesigner 0.17 (CAS with automatic differentiation, convenient modelling of linear/nonlinear functions, can use convenient modelling for some OpenOpt optimization problems and systems of linear/nonlinear equations, possibly sparse or overdetermined), DerApproximator 0.17 (finite-differences derivatives approximation, get or check user-supplied). These packages are written in Python language + NumPy; license BSD allows to use it in both free and closed-code soft See changelog for details: http://openopt.org/Changelog Regards, D. -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations/
Python Concurrency Workshop, January 14-15, 2010
Python Concurrency Workshop, 2nd Edition with David Beazley, author Python Essential Reference January 14-15, 2010 Chicago, Illinois http://www.dabeaz.com/chicago Last June, you might have caught my mindblowing talk on the Python GIL (http://www.dabeaz.com/python/GIL.pdf). However, did you see the other eight hours of material on threads, multiprocessing, distributed computing, coroutines, and more? Probably not unless you were at my Concurrency Workshop the month before. I'm pleased to announce that that the Concurrency Workshop is back for another round and is better than ever. If you have been programming Python for awhile and want to take your skills up a notch, I think this may be of interest. Basically, we're going to take a in-depth look at concurrent programming idioms and library modules. Topics will include such things as threads, message passing, the multiprocessing library, distributed computing idioms, coroutines, asynchronous I/O, and other matters with an eye towards writing programs that can run on multiple CPU cores or clusters. A major theme of the workshop is to explore and understand different programming techniques, their associated performance properties, and other tradeoffs. You'll definitely walk away with new insight and a better understanding of how different parts of Python work under the covers. Likewise, I'm hoping to gain new knowledge from your experience. The workshop is strictly limited to six attendees. More details are available at the above URL. Please feel free to contact me with further questions. Cheers, Dave Beazley -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations/
Re: Where is PyMethod_GET_CLASS in Python 3?
Hi, On Dec 15, 9:22 pm, Terry Reedy wrote: On 12/15/2009 11:08 AM, Infinity77 wrote: Hi All, When building C extensions In Python 2.X, there was a magical PyMethod_GET_CLASS implemented like this: #define PyMethod_GET_CLASS(meth) \ (((PyMethodObject *)meth) - im_class) It looks like Python 3 has wiped out the im_class attribute. For bound methods, renamed to __class__ to be consistent with other objects. Unbound methods were eliminated as extra cruft. First of all, thank you for your answer. However, being a complete newbie in writing C extension, I couldn't seem to find a way to do what I asked in the first place: Try 1: # define PyMethod_GET_CLASS(meth) \ (((PyMethodObject *)meth) - __class__) error C2039: '__class__' : is not a member of 'PyMethodObject' Try 2: PyObject * magicClass = method - __class__ error C2039: '__class__' : is not a member of '_object' I know I am doing something stupid, please be patient :-D . Any suggestion is more than welcome. Andrea. -- http://mail.python.org/mailman/listinfo/python-list
Re: AttributeError: logging module bug ?
Peter wrote: What's the problem ? Please provide the config file logging.cfg to ease debugging. Peter Here it is, thanks for having a look Peter Unfortunately I still can't reproduce your problem. With a minimal file ./of/logger.py from logging import Formatter class RootFormatter(Formatter): pass class ModuleFormatter(Formatter): pass class ClassFormatter(Formatter): pass class DataFormatter(Formatter): pass (and an empty ./of/__init__.py) your initial script runs without error. If you want external help please (1) make sure that you provide all necessary files needed to reproduce the error (2) remove as much of the code as possible that does not contribute to the problem. (This is also an effective debugging technique) Peter -- http://mail.python.org/mailman/listinfo/python-list
Storing a Value in a Cookie
Hi; From what I've studied and gotten working about cookies, it seems one can store only a certain few pieces of information--expiration, path, comment, domain, max-age, version and last visit--but how is it useful if one can't also store, say, the name of a temporary MySQL table where pertinent customer data, such as shopping cart data, is stored? I guess I could put that into the comment field, but I suspect there's a better way of doing it. Please advise. TIA, Victor -- http://mail.python.org/mailman/listinfo/python-list
[ANN] OpenOpt 0.27 (optimization), FuncDesigner 0.17 (auto differentiation)
Hi all, I'm glad to inform you about release of OpenOpt 0.27 (numerical optimization framework), FuncDesigner 0.17 (CAS with automatic differentiation, convenient modelling of linear/nonlinear functions, can use convenient modelling for some OpenOpt optimization problems and systems of linear/nonlinear equations, possibly sparse or overdetermined), DerApproximator 0.17 (finite-differences derivatives approximation, get or check user-supplied). These packages are written in Python language + NumPy; license BSD allows to use it in both free and closed-code soft See changelog for details: http://openopt.org/Changelog Regards, D. -- http://mail.python.org/mailman/listinfo/python-list
Re: Storing a Value in a Cookie
On Wed, Dec 16, 2009 at 1:13 AM, Victor Subervi victorsube...@gmail.com wrote: Hi; From what I've studied and gotten working about cookies, it seems one can store only a certain few pieces of information--expiration, path, comment, domain, max-age, version and last visit--but how is it useful if one can't also store, say, the name of a temporary MySQL table where pertinent customer data, such as shopping cart data, is stored? I guess I could put that into the comment field, but I suspect there's a better way of doing it. Please advise. Besides the metadata you mentioned, a cookie can also store one key-value pair, which is sent as the first part of the Cookie HTTP header when setting the cookie (Cookie: name=value); this is typically used to store a session ID. It is inadvisable to store much data other than a session ID in a cookie because as a rule, in order to avoid security risks, clients should not be trusted. In the example you give of storing the name of an SQL table, someone could guess the name of another user's SQL table and alter their cookie to masquerade as that user, thus compromising the other customer's shopping cart, and depending on the contents of the SQL table, potentially their credit card. Most web frameworks, like Django, will handle low-level details like setting and getting cookies for you and provide a higher-level API for dealing with sessions and/or users. Cheers, Chris -- http://blog.rebertia.com -- http://mail.python.org/mailman/listinfo/python-list
Spot Metals Prices (slightly OT)
Hi; I need to update a client's site with spot metals prices. I could build a scraper to grab them off someone else' site (they only need to be accurate within 24 hours), but is there a better *free* source? TIA, Victor -- http://mail.python.org/mailman/listinfo/python-list
Re: Wrapping paper, anyone ?
simon wrote: Nice :) --- stars.py2009-12-16 10:52:49.553505036 +0100 +++ stars_fixed.py 2009-12-16 10:53:32.545786454 +0100 @@ -48,7 +48,9 @@ def __init__(self): self.calls = [] -__getattr__ = ScribeCall +def __getattr__(self, name): +return ScribeCall(self, name) + def run(self, ctx): for call in self.calls: #print ctx.%s(%s) % (call.name, ', '.join(str(x) for x in call.args)) Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: strptime not strict enough
On 12/15/2009 10:30 AM, Tobias Weber wrote:
Hi,
despite the directives for leading zero stime.strptime('09121',
'%y%m%d') returns the first of December. Shouldn't it raise ValueError?
Where do I get strict date parsing?
A bit hackish perhaps, but maybe you can check for the date's length:
date = '09121'
if len(date) == 6 and time.strptime(date, format):
...
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Re: Storing a Value in a Cookie
On Wed, Dec 16, 2009 at 4:42 AM, Chris Rebert c...@rebertia.com wrote: On Wed, Dec 16, 2009 at 1:13 AM, Victor Subervi victorsube...@gmail.com wrote: Hi; From what I've studied and gotten working about cookies, it seems one can store only a certain few pieces of information--expiration, path, comment, domain, max-age, version and last visit--but how is it useful if one can't also store, say, the name of a temporary MySQL table where pertinent customer data, such as shopping cart data, is stored? I guess I could put that into the comment field, but I suspect there's a better way of doing it. Please advise. Besides the metadata you mentioned, a cookie can also store one key-value pair, which is sent as the first part of the Cookie HTTP header when setting the cookie (Cookie: name=value); this is typically used to store a session ID. It is inadvisable to store much data other than a session ID in a cookie because as a rule, in order to avoid security risks, clients should not be trusted. In the example you give of storing the name of an SQL table, someone could guess the name of another user's SQL table and alter their cookie to masquerade as that user, thus compromising the other customer's shopping cart, and depending on the contents of the SQL table, potentially their credit card. Most web frameworks, like Django, will handle low-level details like setting and getting cookies for you and provide a higher-level API for dealing with sessions and/or users. Well, I'm not using a web framework like Django and this shopping cart is almost completely written, so I'm not about to switch. So, how do I use the session ID to correlate with the user's temp MySQL table? TIA, V -- http://mail.python.org/mailman/listinfo/python-list
Re: Calling Cookie Values
On Tue, Dec 15, 2009 at 4:01 PM, Grant Edwards inva...@invalid.invalidwrote:
On Tue, Dec 15, 2009 at 2:36 PM, MRAB pyt...@mrabarnett.plus.com
mailto:pyt...@mrabarnett.plus.com wrote:
You've just created a cookie, but are trying to get a value without
having set it first!
LOL! Rewrote code thus:
cookie = os.environ.get('HTTP_COOKIE')
if not cookie:
cookie = Cookie.SimpleCookie()
cExpires, cPath, cComment, cDomain, cMaxAge, cVersion = myCookie()
cookie['lastvisit'] = str(time.time())
cookie['lastvisit'] is a string.
cookie['lastvisit']['expires'] = cExpires
Here you're using the string 'expires' as an index into the
string returned by str(time.time()). You can only index into
strings using integers.
What do you expect the following statement to do?
'1260910829.18'['expires'] = whatever
cookie['lastvisit']['path'] = cPath
cookie['lastvisit']['comment'] = cComment
cookie['lastvisit']['domain'] = cDomain
cookie['lastvisit']['max-age'] = cMaxAge
cookie['lastvisit']['version'] = cVersion
cookieFlag = 'new'
else:
cookieFlag = 'old'
print cookie['lastvisit']['expires'].value
Got this error:
/var/www/html/angrynates.com/cart/cart.py
http://angrynates.com/cart/cart.py
191 /html
192 '''
193
194 cart()
195
cart = function cart
/var/www/html/angrynates.com/cart/cart.py
http://angrynates.com/cart/cart.py in cart()
31 else:
32 cookieFlag = 'old'
33 print cookie['lastvisit']['expires'].value
34 # Don't know what to do with this. It's for when client won't
accept cookies
35 # sessionDir = os.environ['DOCUMENT_ROOT'] + '/tmp/.session'
cookie = 'lastvisit=1260898013.65; lastvisit=1260898315.01', ].value
undefined
TypeError: string indices must be integers
args = ('string indices must be integers',)
You took the string returned by str(time.time()) and tried to
use 'expires' as an index into that time string. You can't use
a string to index into a string. You can only use integers.
That's what is mean't by the error message:
TypeError: string indices must be integers
Thank you.
V
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Re: Dangerous behavior of list(generator)
On Dec 14, 11:05 pm, Carl Banks pavlovevide...@gmail.com wrote: But to answer your question, I think simple is better than complex rules the day. Right now StopIteration stops an iteration, simple as that. Any fix would add complexity. +1 -- http://mail.python.org/mailman/listinfo/python-list
Dec 20 Global Python All Free SW HW Culture meeting - BerkeleyTIP
A great December Solstice to you yours. :) JOIN the Global All Free SW, HW, Culture meeting via VOIP Dec 20 Sunday, 12N-3PM (Pacific = UTC-8) = 3P-6P Eastern = 8P-11P UTC [Jan 2009 meetings: 2nd, 17th - mark your calendar] http://sites.google.com/site/berkeleytip/schedule == WATCH some VIDEOS: Mark Shuttleworth Interview - 10.04 Lucid Larynx Learning from Code History , Andreas Zeller Why does my program fail? Your version history might have the answer. Audio Hardware Enablement Session, UbuntuDevelopersSummit in Dallas Distributed Development, UDS in Dallas Splunk, Jeremy Thurgood CLUG Upstart, Stefano Rivera CLUG Interfacing with the real world, Mark Ter Morshuizen, Marc Welz CLUG Accelerating Graphics; Camp KDE 2009 http://sites.google.com/site/berkeleytip/talk-videos == Join the MAILING LIST tell us which videos you will watch why: http://groups.google.com/group/BerkTIPGlobal == JOIN the meeting via IRC VOIP: Come discuss any everything, work on your individual or group projects. HOT TOPICS: Ub or KUb 9.10?, Ubuntu 10.04 plans, Android, Python3000 in 2010? Start on the #berkeleytip irc.freenode.net channel, we'll help you get your VOIP system up working. For VOIP SW, connection info, see: http://sites.google.com/site/berkeleytip/remote-attendance Berkeley meeting LOCATION: Watch the website mail list for latest details, perhaps at the Berkeley Public Library, or a cafe, due to Free Speech Cafe closed for winter break. http://sites.google.com/site/berkeleytip/ == OPPORTUNITIES to VOLUNTEER or learn new JOB SKILLS for 2010: Help set up our: Mailing list, FreeSwitch VOIP server, website http://sites.google.com/site/berkeleytip/opportunities Inquire discuss at the meeting. == For Forwarding - You are invited to forward this announcement wherever it would be appreciated. -- http://mail.python.org/mailman/listinfo/python-list
Re: iterators and views of lists
Brendan Miller: Currently people slice and dice with well... slices, but those are copying, so if you want to operate over part of a range you make a copy, perform the operation, then copy the results back in. I was thinking you'd want something like random access iterators in c++, or pointers in c, to write typical in place algorithmic code. To me, something like non-copying slices (maybe you'd call it a list view?) would seem functionally similar and maybe more pythonic. There are surely ways to modify the current situation, introducing views, and other kind of iterators (C++ design in this regard can be improved, see the last works of Andrei Alexandrescu about D). This can lead to a certain increase of the performance of Python programs, but it also surely makes writing programs harder and introduces new bug sources. Modern languages are now doing something kinda different from what you ask for, introducing more immutable data (that in theory lead to more copying, but in practice allow for more data sharing too, because there's less need to actually copy data when the data is immutable), see Clojure. An hypothetical Python language designed today probably copies more stuff from Haskell and Clojure. Python is kept intentionally simple, because it's designed to be usable by people that are not just professional programmers, but for example a biologist that needs to perform some computations and doesn't want to use all the time learning how to use the language itself (think about C++ again). So Python programmers live with a less performing language. When performance of the code is not enough (even with the future Unladen Swallow), they use another language (often to write extensions used from Python code). Bye, bearophile -- http://mail.python.org/mailman/listinfo/python-list
Re: iterators and views of lists
On Tue, 15 Dec 2009 23:48:04 -0800, Brendan Miller wrote: On Tue, Dec 15, 2009 at 9:09 PM, Terry Reedy tjre...@udel.edu wrote: On 12/15/2009 10:39 PM, Brendan Miller wrote: I'm wondering if anyone has done work towards creating more powerful iterators for python, or creating some more pythonic equivalent. For sequences, integer indexes let you do anything you want that the container supports. No, that's what I'm getting at... Most of the existing mutating algorithms in python (sort, reverse) operate over entire collections, not partial collections delimited by indexes... which would be really awkward anyway. I'm sympathetic to your request for list views. I've often wanted some way to cleanly and neatly do this: for item in seq[1:]: process(item) without making an unnecessary copy of almost all of seq. None of the alternatives are very nice. They all obscure the simplicity of the algorithm and add unnecessary effort: for i, item in seq: if i != 0: process(item) it = iter(seq) try: it.next() # throw the first value away except StopIteration: pass for item in it: process(item) if not isinstance(seq, basestring): raise TypeError(this only works on strings) for item in buffer(seq, 1): process(item) Although that last one is the least horrible, particularly if you are prepared to drop the explicit type-check. Currently people slice and dice with well... slices, but those are copying, so if you want to operate over part of a range you make a copy, perform the operation, then copy the results back in. I was thinking you'd want something like random access iterators in c++, or pointers in c, to write typical in place algorithmic code. To me, something like non-copying slices (maybe you'd call it a list view?) would seem functionally similar and maybe more pythonic. Unless you have a really huge amount of data in your list, chances are that the cost of making a temporary copy will be relatively small. After all, under the hood you're just copying pointers (at least for CPython), not the entire data object. So most of the time the extra complexity of in-place algorithms is just premature optimization. But not always. -- Steven -- http://mail.python.org/mailman/listinfo/python-list
Re: iterators and views of lists
Steven D'Aprano st...@remove-this-cybersource.com.au writes: I'm sympathetic to your request for list views. I've often wanted some way to cleanly and neatly do this: for item in seq[1:]: process(item) without making an unnecessary copy of almost all of seq. I don't know how it's implemented - but presumably itertools.islice could provide what you're asking for? -- http://mail.python.org/mailman/listinfo/python-list
platform module problem when frozen?
Hello everyone, I am having problems with the platform module when being run from a frozen program (py2exe). It imports it fine, but it gives me the following error : 'module' object does not contain attribute 'platform' when I do this : platform.platfom() Does platform have a problem with being called when in a frozen program or does it do some stuff behind the scenes that py2exe doesn't pickup? Thank you, Gabriel -- http://mail.python.org/mailman/listinfo/python-list
Re: ftplib retrlines timeout
On Dec 15, 6:17 pm, Jennifer owenzhang.chic...@gmail.com wrote:
I am writing a program that has a requirement for a timeout of
retrlines after the connection established. I just wonder if timeout
of ftplib.FTP('.xxx.com',username,password,timeout) will work for
retrlines method after the connection established. Or
socket.setdefaulttimeout will work in this case. Please let me know.
What exception will be throwed if ftp.retrlines timed out.
Many Thanks!
- Jennifer
I asked a similar question on here a few days ago and got no response,
however I tried a large download which timed out with the following:
Traceback (most recent call last):
File ./download_r1_neodf.py, line 167, in module
result = ftp.quit()
File /usr/local/lib/python2.6/ftplib.py, line 566, in quit
resp = self.voidcmd('QUIT')
File /usr/local/lib/python2.6/ftplib.py, line 248, in voidcmd
return self.voidresp()
File /usr/local/lib/python2.6/ftplib.py, line 223, in voidresp
resp = self.getresp()
File /usr/local/lib/python2.6/ftplib.py, line 209, in getresp
resp = self.getmultiline()
File /usr/local/lib/python2.6/ftplib.py, line 195, in getmultiline
line = self.getline()
File /usr/local/lib/python2.6/ftplib.py, line 182, in getline
line = self.file.readline()
File /usr/local/lib/python2.6/socket.py, line 406, in readline
data = self._sock.recv(self._rbufsize)
socket.error: [Errno 110] Connection timed out
BTW, if you want to use the timeout paramter, you must also use the
account parameter. Set it to ''.
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Re: pyZui - anyone know about this?
PyZUI 0.1 has been released: http://da.vidr.cc/projects/pyzui/ Cool, thanks very much! I'm using python 2.6 these days and noticed that you use the sha module which makes py2.6 spit out a deprecation warning: /home/fetchinson/pyzui/pyzui/tilestore.py:22: DeprecationWarning: the sha module is deprecated; use the hashlib module instead import sha It's no big deal but if you want to be future proof maybe you can switch to hashlib for py2.6 and stay with sha for py2.5 and before (a try/except block would suffice). Cheers, Daniel -- Psss, psss, put it down! - http://www.cafepress.com/putitdown -- http://mail.python.org/mailman/listinfo/python-list
Re: iterators and views of lists
On Dec 16, 10:39 am, Brendan Miller catph...@catphive.net wrote: I was trying to reimplement some of the c++ library of generic algorithms in c++ in python, but I was finding that this is problematic to do this in a generic way because there isn't any equivalent of c++'s forward iterators, random access iterators, etc. i.e. all python iterators are just input iterators that can't mutate the sequence they iterate over nor move backwards or by an arbitrary offset. You might be interested in this library http://pypi.python.org/pypi/ stream. You can easily create arbitrary slice, for example i = mylist takei(primes()) will return an iterator over the items of mylist with a prime number index, given that primes() return an iterator over prime numbers. I'm not familiar with forward/random-access/bidirectional iterators. -- http://mail.python.org/mailman/listinfo/python-list
py3.x urllib.request - HTTPCookieProcessor and header adding
Hi all, I need to fetch some html pages and it is required to have
cookies enabled. So, I'm using
opener = urllib.request.build_opener(urllib.request.HTTPCookieProcessor
())
urllib.request.install_opener(opener)
as a global instance. Is there a way to always use a default header
like:
{User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:
1.9.1.5) Gecko/20091102 Firefox/3.5.5}
instead of always creating urllib.request.Request(my_url, None,
headers) and call different urls with the same
cookies?
Thanks, Mattia
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Re: (OT) Where Are Cookies Stored?
On Tue, Dec 15, 2009 at 6:57 PM, r0g aioe@technicalbloke.com wrote: Gabriel Genellina wrote: En Tue, 15 Dec 2009 12:30:23 -0300, Victor Subervi victorsube...@gmail.com escribió: I've googled, found where cookies are supposed to be, the folders and files don't exist. I've opened my latest and greatest FF and seen cookies in there, but when I search for the name of the cookie in the C: dir, it's not there...anywhere. I've made sure no folders/files are hidden and I still can't find them. In as administrator. What up? XP OS I need to get in so I can learn how to program with cookies. How the browser stores its cookies should be irrelevant. Whenever a server response contains a Set-Cookie header, the browser saves the cookie. When the client issues a request that matches a saved cookie, it adds a Cookie header with the cookie. From the server POV, you don't care how the cookie is stored. Cookies in FF for Windows are stored in an sqlite database in here... ~\Application Data\Mozilla\Firefox\Profiles\%XYZ%\firefox_profile\ Man, I searched C drive (the only drive) on this computer where I'm working (Internet cafe) for Application Data and nuttin. V -- http://mail.python.org/mailman/listinfo/python-list
Re: (OT) Where Are Cookies Stored?
On Tue, Dec 15, 2009 at 6:29 PM, Steven D'Aprano st...@remove-this-cybersource.com.au wrote: On Tue, 15 Dec 2009 13:03:07 -0300, Gabriel Genellina wrote: En Tue, 15 Dec 2009 12:30:23 -0300, Victor Subervi victorsube...@gmail.com escribió: I've googled, found where cookies are supposed to be, the folders and files don't exist. [...] How the browser stores its cookies should be irrelevant. Whenever a server response contains a Set-Cookie header, the browser saves the cookie. When the client issues a request that matches a saved cookie, it adds a Cookie header with the cookie. From the server POV, you don't care how the cookie is stored. But you do care if you're writing a cookie manager, or if you need to grab an existing cookie from disk and do something with it (as wget allows you to do, for example). Victor, have you got Firefox set to delete all cookies when you log out? No. I can see the *$^@ cookies in Tools/Options but I can't find 'em! V -- http://mail.python.org/mailman/listinfo/python-list
Re: pyZui - anyone know about this?
David Roberts wrote: PyZUI 0.1 has been released: http://da.vidr.cc/projects/pyzui/ Cool, thanks :) Roger. -- http://mail.python.org/mailman/listinfo/python-list
Re: iterators and views of lists
Paul Rudin wrote: Steven D'Aprano st...@remove-this-cybersource.com.au writes: I'm sympathetic to your request for list views. I've often wanted some way to cleanly and neatly do this: for item in seq[1:]: process(item) without making an unnecessary copy of almost all of seq. I don't know how it's implemented - but presumably itertools.islice could provide what you're asking for? For skipping just a few items islice() is perfect, for big offsets its O(N) behaviour may get annoying: $ python -m timeit -sfrom itertools import islice; N=10**5; r = range(N) for i in islice(r, N, N): pass 100 loops, best of 3: 1.93 msec per loop $ python -m timeit -sfrom itertools import islice; N=10**6; r = range(N) for i in islice(r, N, N): pass 10 loops, best of 3: 18.9 msec per loop $ python -m timeit -sfrom itertools import islice; N=10**7; r = range(N) for i in islice(r, N, N): pass 10 loops, best of 3: 188 msec per loop islice() could be changed to special-case lists and tuples, but that feels a bit unclean. -- http://mail.python.org/mailman/listinfo/python-list
Re: Wrapping paper, anyone ?
Peter Otten wrote: simon wrote: Nice :) --- stars.py2009-12-16 10:52:49.553505036 +0100 +++ stars_fixed.py 2009-12-16 10:53:32.545786454 +0100 @@ -48,7 +48,9 @@ def __init__(self): self.calls = [] -__getattr__ = ScribeCall +def __getattr__(self, name): +return ScribeCall(self, name) + def run(self, ctx): for call in self.calls: #print ctx.%s(%s) % (call.name, ', '.join(str(x) for x in call.args)) Peter Nice :) Now all I need is an A0 printer, maybe Santa will bring me one! Roger. -- http://mail.python.org/mailman/listinfo/python-list
Raw string substitution problem
I am having a problem when substituting a raw string. When I do the following:
re.sub('abc', r'a\nb\nc', '123abcdefg')
I get
123a
b
cdefg
what I want is
r'123a\nb\ncdefg'
How do I get what I want?
Thanks,
-EdK
Ed Keith
e_...@yahoo.com
Blog: edkeith.blogspot.com
--
http://mail.python.org/mailman/listinfo/python-list
Re: iterators and views of lists
On Dec 15, 11:48 pm, Brendan Miller catph...@catphive.net wrote: I was thinking you'd want something like random access iterators in c++, or pointers in c, to write typical in place algorithmic code. To me, something like non-copying slices (maybe you'd call it a list view?) would seem functionally similar and maybe more pythonic. My general answer to the question, Has anyone done any work in Python to get a certain feature that we have in C++?, is, There's little demand for many features of C++ because they are actually workarounds for the language's poor expressibility. I'd say that's kind of the case here. C++ is poorly expressive (container operations are often an excercise in line-noise-management), and values fine-tuned optimization. So it makes sense to offer things like mutator views that reduce the number of container operations needed, and avoids copying. Python expresses container operations succinctly and clearly, and doesn't value performance as much. Copying and replacing is good enough most of the time, so there's less demand for things like mutator views. Carl Banks -- http://mail.python.org/mailman/listinfo/python-list
Re: iterators and views of lists
On Wed, Dec 16, 2009 at 7:33 AM, Peter Otten __pete...@web.de wrote: islice() could be changed to special-case lists and tuples, but that feels a bit unclean. How about special-casing objects that implement collections.Sequence? -- Daniel Stutzbach, Ph.D. President, Stutzbach Enterprises, LLC http://stutzbachenterprises.com -- http://mail.python.org/mailman/listinfo/python-list
Re: iterators and views of lists
On Wed, Dec 16, 2009 at 5:39 AM, Steven D'Aprano st...@remove-this-cybersource.com.au wrote: for item in seq[1:]: process(item) without making an unnecessary copy of almost all of seq. I use the following idiom: for i in range(1, len(seq)): process(seq[i]) Alternately, if I'm using the blist extension type that I wrote, then seq[1:] is O(log n). http://pypi.python.org/pypi/blist/ -- Daniel Stutzbach, Ph.D. President, Stutzbach Enterprises, LLC http://stutzbachenterprises.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Problems with gettext and msgfmt
On Dec 15, 9:12 pm, JKPeck jkp...@gmail.com wrote: I'm using Python 2.6 on Windows and having trouble with the charset in gettext. It seems to be so broken that I must be missing something. When I run msgfmt.py, as far as I can see it writes no charset information into the mo file. The actual po files are in utf-8 in this case and have a charset declaration. Then when ,_parse in gettext loads the messages, it does no conversion to Unicode, because it has no charset information. So the message dictionary is actually in utf-8 despite the comment in the code # Note: we unconditionally convert both msgids and msgstrs to # Unicode using the character encoding specified in the charset # parameter of the Content-Type header. Then ugettext tries to just return the translated message, which is not in Unicode, or to convert to Unicode, which fails because the unicode call is not specifying any encoding. The _parse code seems to expect to produce a Unicode translation dictionary, and gettext expects to encode Unicode into the current code page, but the message dictionary never gets mapped to Unicode in the first place. What I want is simply to use utf-8 po files and get translations in Unicode. TIA for any suggestions. -Jon Peck Never mind. I figured this out. The problem is that a line such as _() in the source that is scanned causes all the meta information to be lost in the mo file. Once I changed that code, I get the expected result. -- http://mail.python.org/mailman/listinfo/python-list
Re: Object Relational Mappers are evil (a meditation)
Steven D'Aprano st...@remove-this-cybersource.com.au writes: On Fri, 11 Dec 2009 19:20:21 -0500, Steve Holden wrote: Simon Forman wrote: [...] As far as the OP rant goes, my $0.02: bad programmers will write bad code in any language, with any tool or system or environment they're given. If you want to avoid bad code there's (apparently) no substitute for smrt programmers who are familiar with the tools they're using, not just the syntax but the underlying conceptual models as well. Hear, hear! That's all very well, but some languages and techniques encourage the programmer to write bad code. That's just BS. Bad code doesn't just write itself. Programmers write bad code. And ignorance is not an excuse. Just because a language allows a programmer to write sloppy code doesn't put the language at fault for the bad code programmers write with it. Any half-way decent programmer should be cognisant of when they're writing bad code and when they're writing good code. They should be able to admit that they don't know enough about a language to be writing programs for money in it. They should be able to see anti-patterns and areas of their code that should be re-factored or re-written. The real underlying problem is the human characteristic that allows us to let ourselves believe that we're better than everyone else or more simply, better than we really are. -- http://mail.python.org/mailman/listinfo/python-list
Re: Raw string substitution problem
En Wed, 16 Dec 2009 11:09:32 -0300, Ed Keith e_...@yahoo.com escribió:
I am having a problem when substituting a raw string. When I do the
following:
re.sub('abc', r'a\nb\nc', '123abcdefg')
I get
123a
b
cdefg
what I want is
r'123a\nb\ncdefg'
From http://docs.python.org/library/re.html#re.sub
re.sub(pattern, repl, string[, count])
...repl can be a string or a function; if
it is a string, any backslash escapes in
it are processed. That is, \n is converted
to a single newline character, \r is
converted to a linefeed, and so forth.
So you'll have to double your backslashes:
py re.sub('abc', r'a\\nb\\nc', '123abcdefg')
'123a\\nb\\ncdefg'
--
Gabriel Genellina
--
http://mail.python.org/mailman/listinfo/python-list
Re: Raw string substitution problem
On Dec 16, 9:09 am, Ed Keith e_...@yahoo.com wrote:
I am having a problem when substituting a raw string. When I do the following:
re.sub('abc', r'a\nb\nc', '123abcdefg')
I get
123a
b
cdefg
what I want is
r'123a\nb\ncdefg'
How do I get what I want?
Thanks,
-EdK
Ed Keith
e_...@yahoo.com
Blog: edkeith.blogspot.com
Looks like raw strings lets you avoid having to escape slashes when
specifying the literal, but doesn't preserve it during operations.
changing your replacement string to r'a\\nb\\nc' seems to give the
desired output
cheers
--
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Re: power of explicit self?
Fire Crow m...@firecrow.com: Nowhere, I'd say. An *implicit* self would have to be implemented somewhere in the compiler -- but an explicit self doesn't. It's homogeneous, always name-dot-attribute; the name 'self' is not special at all. This is I find very interesting, If I understand your comment correctly, one of the advantages of implicit self is that it does not need any special treatment, it's handled like any other name-dot-attribute. Yes. -- Gabriel Genellina Yahoo! Cocina Encontra las mejores recetas con Yahoo! Cocina. http://ar.mujer.yahoo.com/cocina/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Wrapping paper, anyone ?
On Dec 16, 9:00 pm, Peter Otten __pete...@web.de wrote: simon wrote: Nice :) --- stars.py 2009-12-16 10:52:49.553505036 +0100 +++ stars_fixed.py 2009-12-16 10:53:32.545786454 +0100 @@ -48,7 +48,9 @@ def __init__(self): self.calls = [] - __getattr__ = ScribeCall + def __getattr__(self, name): + return ScribeCall(self, name) + def run(self, ctx): for call in self.calls: #print ctx.%s(%s) % (call.name, ', '.join(str(x) for x in call.args)) Peter Oh.. I'm on py2.5.. does this not work for you ? -- http://mail.python.org/mailman/listinfo/python-list
Re: Wrapping paper, anyone ?
On Dec 17, 12:36 am, r0g aioe@technicalbloke.com wrote: Peter Otten wrote: simon wrote: Nice :) --- stars.py 2009-12-16 10:52:49.553505036 +0100 +++ stars_fixed.py 2009-12-16 10:53:32.545786454 +0100 @@ -48,7 +48,9 @@ def __init__(self): self.calls = [] - __getattr__ = ScribeCall + def __getattr__(self, name): + return ScribeCall(self, name) + def run(self, ctx): for call in self.calls: #print ctx.%s(%s) % (call.name, ', '.join(str(x) for x in call.args)) Peter Nice :) Now all I need is an A0 printer, maybe Santa will bring me one! Roger. I found I could wrap a CD in A4 paper... for bigger things, i might stick some A4 paper together. Wow. Who is getting the A0 gift ? -- http://mail.python.org/mailman/listinfo/python-list
Re: power of explicit self?
On 2009-12-16, Gabriel Genellina gagsl-...@yahoo.com.ar wrote: Fire Crow m...@firecrow.com: Nowhere, I'd say. An *implicit* self would have to be implemented somewhere in the compiler -- but an explicit self doesn't. It's homogeneous, always name-dot-attribute; the name 'self' is not special at all. This is I find very interesting, If I understand your comment correctly, one of the advantages of implicit self is that it does not need any special treatment, it's handled like any other name-dot-attribute. Yes. I presume you both meant that is an advantage of explicit self not implicit? -- Grant Edwards grante Yow! What's the MATTER at Sid? ... Is your BEVERAGE visi.comunsatisfactory? -- http://mail.python.org/mailman/listinfo/python-list
Re: platform module problem when frozen?
Gabriel Rossetti wrote: div class=moz-text-flowed style=font-family: -moz-fixedHello everyone, I am having problems with the platform module when being run from a frozen program (py2exe). It imports it fine, but it gives me the following error : 'module' object does not contain attribute 'platform' when I do this : platform.platfom() Does platform have a problem with being called when in a frozen program or does it do some stuff behind the scenes that py2exe doesn't pickup? Thank you, Gabriel /div Chances are that there is another module platform which is being picked up instead of the one in the library. Have you tried printing platform.__file__ ?? If it's getting the wrong one, you probably have a search-order problem. DaveA -- http://mail.python.org/mailman/listinfo/python-list
basic grammer error..
class codefly: def WaitFreecatz(self, hours): hours = self.hours i = 1 while i hours: print 'i wait %s hours' %(i) i = i+1 if i == hours: print '\nhe never comes' run error// what's wrong?? -- http://mail.python.org/mailman/listinfo/python-list
Re: Wrapping paper, anyone ?
simon wrote:
On Dec 16, 9:00 pm, Peter Otten __pete...@web.de wrote:
simon wrote:
Nice :)
--- stars.py2009-12-16 10:52:49.553505036 +0100
+++ stars_fixed.py 2009-12-16 10:53:32.545786454 +0100
@@ -48,7 +48,9 @@
def __init__(self):
self.calls = []
-__getattr__ = ScribeCall
+def __getattr__(self, name):
+return ScribeCall(self, name)
+
def run(self, ctx):
for call in self.calls:
#print ctx.%s(%s) % (call.name, ', '.join(str(x) for x in
call.args))
Peter
Oh.. I'm on py2.5.. does this not work for you ?
You mean 2.4? Here's a little demo:
$ cat scribecall.py
class ScribeCall(object):
def __init__(self, scribe, name):
print init, scribe, name
def __call__(self, *args, **kw):
print call, args, kw
class Scribe(object):
__getattr__ = ScribeCall
if __name__ == __main__:
scribe = Scribe()
scribe.yadda(42)
$ python2.4 scribecall.py
init __main__.Scribe object at 0x7fc87b9a1450 yadda
call (42,) {}
$ python2.5 scribecall.py
Traceback (most recent call last):
File scribecall.py, line 12, in module
scribe.yadda(42)
TypeError: __init__() takes exactly 3 arguments (2 given)
$ python2.5 -V
Python 2.5.4
$ python2.6 scribecall.py
Traceback (most recent call last):
File scribecall.py, line 12, in module
scribe.yadda(42)
TypeError: __init__() takes exactly 3 arguments (2 given)
Peter
--
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Re: basic grammer error..
codefly wrote: class codefly: def WaitFreecatz(self, hours): hours = self.hours i = 1 while i hours: print 'i wait %s hours' %(i) i = i+1 if i == hours: print '\nhe never comes' run error// what's wrong?? Next time, be so kind to tell us what the actual error *is*, will you? Because there is none for me after c'n'p-ing that code into a source-file... Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: Object Relational Mappers are evil (a meditation)
J Kenneth King wrote: Steven D'Aprano st...@remove-this-cybersource.com.au writes: On Fri, 11 Dec 2009 19:20:21 -0500, Steve Holden wrote: snip Hear, hear! That's all very well, but some languages and techniques encourage the programmer to write bad code. That's just BS. Bad code doesn't just write itself. Programmers write bad code. And ignorance is not an excuse. Just because a language allows a programmer to write sloppy code doesn't put the language at fault for the bad code programmers write with it. Okay, as long as you realize the corollary of your argument is: It is impossible for a language to encourage programmers to write good code and promote good programming practices by design. I'm not sure that's entirely true either. I think python's one way to do something design philosophy goes some way toward that, as does Smalltalk's enforced message passing. I think PHP's superglobals and namespacing encourage bad practices (or used to back in the day), as do Basic's GOTO and Ecmascript's prototype overriding. Surely a language CAN be said to encourage kludges and sloppiness if it allows a good way and a bad way and makes the bad way much easier to implement or understand for noobs. Roger. -- http://mail.python.org/mailman/listinfo/python-list
Re: Wrapping paper, anyone ?
simon wrote: On Dec 17, 12:36 am, r0g aioe@technicalbloke.com wrote: Peter Otten wrote: simon wrote: Nice :) --- stars.py2009-12-16 10:52:49.553505036 +0100 +++ stars_fixed.py 2009-12-16 10:53:32.545786454 +0100 @@ -48,7 +48,9 @@ def __init__(self): self.calls = [] -__getattr__ = ScribeCall +def __getattr__(self, name): +return ScribeCall(self, name) + def run(self, ctx): for call in self.calls: #print ctx.%s(%s) % (call.name, ', '.join(str(x) for x in call.args)) Peter Nice :) Now all I need is an A0 printer, maybe Santa will bring me one! Roger. I found I could wrap a CD in A4 paper... for bigger things, i might stick some A4 paper together. Wow. Who is getting the A0 gift ? I was thinking of selling it, this is BSD licensed right! ;D R. -- http://mail.python.org/mailman/listinfo/python-list
Re: (OT) Where Are Cookies Stored?
Victor Subervi wrote: On Tue, Dec 15, 2009 at 6:57 PM, r0g aioe@technicalbloke.com wrote: snip Cookies in FF for Windows are stored in an sqlite database in here... ~\Application Data\Mozilla\Firefox\Profiles\%XYZ%\firefox_profile\ Man, I searched C drive (the only drive) on this computer where I'm working (Internet cafe) for Application Data and nuttin. V How are you searching? Microsoft is so sure we don't want to see the gory details that they hide all sorts of things, by default. And especially on a public computer, you shouldn't even look with Explorer. As for searching with Explorer, there are not only design problems, but bugs as well. Get a command line, and do something like: dir /s c:\Firefox if you search directly for Application Data, you have to be sure to properly use quotes. You also need to add the /ah switch, since it's a hidden directory. So I cheat by searching for a subdirectory under it. You can also find the appdata directory by looking at the environment variable USERPROFILE, switching to that directory, and descending directly into application data by using the tab key. C:\set USERPROFILE USERPROFILE=C:\Documents and Settings\davea C:\cd Documents and Settings\davea C:\Documents and Settings\daveacd Application Data I got the last line by typingcd app then pressing the tab key (this adds the quotes and spaces for me) Anyway, once you're in the Firefox directory, do: C:\Documents and Settings\davea\Application Data\Mozilla\Firefoxdir /s cook* and you'll see the actual file. You can also search for it from the root, but I have 13 files cookies.* and 8 cookies.sqlite Incidentally, lots of interesting stuff is in the USERPROFILE directory, so it's a good thing to know how to quickly find. Different versions of Windows put it different places, but it ends with the logged-in user name. So user-specific data is typically stored there. Some versions of Python even include a directory under it in the sys.path directory list. DaveA -- http://mail.python.org/mailman/listinfo/python-list
Re: basic grammer error..
On 12월17일, 오전12시23분, Diez B. Roggisch de...@nospam.web.de wrote: codefly wrote: class codefly: def WaitFreecatz(self, hours): hours = self.hours i = 1 while i hours: print 'i wait %s hours' %(i) i = i+1 if i == hours: print '\nhe never comes' run error// what's wrong?? Next time, be so kind to tell us what the actual error *is*, will you? Because there is none for me after c'n'p-ing that code into a source-file... Diez Thank you Sir.^^ -- http://mail.python.org/mailman/listinfo/python-list
Re: power of explicit self?
En Wed, 16 Dec 2009 11:56:17 -0300, Grant Edwards inva...@invalid.invalid escribió: On 2009-12-16, Gabriel Genellina gagsl-...@yahoo.com.ar wrote: Fire Crow m...@firecrow.com: Nowhere, I'd say. An *implicit* self would have to be implemented somewhere in the compiler -- but an explicit self doesn't. It's homogeneous, always name-dot-attribute; the name 'self' is not special at all. This is I find very interesting, If I understand your comment correctly, one of the advantages of implicit self is that it does not need any special treatment, it's handled like any other name-dot-attribute. Yes. I presume you both meant that is an advantage of explicit self not implicit? Yes, sorry, the advantage of an *explicit* self is being homogeneous. -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
i re-write it
error message is here.. when i type import code2 Traceback (most recent call last): File stdin, line 1, in module File code2.py, line 11 ~ ^ SyntaxError: invalid syntax and source code is here class codefly: def WaitFreecatz(self, hours): hours = self.hours i =1 while i hours: print ' i wait for %s hours' %(i) i = i+1 if i ==hours: print 'he never comes' -- http://mail.python.org/mailman/listinfo/python-list
Re: Subclassing RegexObject
Tobias Weber wrote: how do I subclass or at least add a method to something returned by re.compile()? Let's see: import re r = re.compile(yadda) class S(type(r)): pass ... Traceback (most recent call last): File stdin, line 1, in module TypeError: Error when calling the metaclass bases type '_sre.SRE_Pattern' is not an acceptable base type So I'm afraid you can't subclass... def hello(self): print hello ... type(r).hello = hello Traceback (most recent call last): File stdin, line 1, in module TypeError: can't set attributes of built-in/extension type '_sre.SRE_Pattern' r.hello = hello Traceback (most recent call last): File stdin, line 1, in module AttributeError: '_sre.SRE_Pattern' object has no attribute 'hello' ...nor add a method... class W(object): ... def __init__(self, match): ... self._match = match ... def __getattr__(self, name): ... return getattr(self._match, name) ... hello = hello ... def my_compile(*args, **kw): ... m = original_compile(*args, **kw) ... if m is not None: ... return W(m) ... original_compile = re.compile re.compile = my_compile re.compile(yadda).hello() hello ...but alter the meaning of something returned by re.compile() you can. Now who would want to do that? And why? Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: i re-write it
codefly wrote: error message is here.. when i type import code2 Traceback (most recent call last): File stdin, line 1, in module File code2.py, line 11 ~ ^ SyntaxError: invalid syntax and source code is here No, it isn't. The above error says line 11, but the code you show doesn't have 11 lines. From the above error, it looks as if you have a stray tilde-character on the last or so line in code.py. Remove it. Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: i re-write it
On Dec 17, 12:43 am, Diez B. Roggisch de...@nospam.web.de wrote: codefly wrote: error message is here.. when i type import code2 Traceback (most recent call last): File stdin, line 1, in module File code2.py, line 11 ~ ^ SyntaxError: invalid syntax and source code is here No, it isn't. The above error says line 11, but the code you show doesn't have 11 lines. From the above error, it looks as if you have a stray tilde-character on the last or so line in code.py. Remove it. Diez Oh my Thanks.. -- http://mail.python.org/mailman/listinfo/python-list
Re: (OT) Where Are Cookies Stored?
On Wed, Dec 16, 2009 at 10:33 AM, Dave Angel da...@ieee.org wrote: You can also find the appdata directory by looking at the environment variable USERPROFILE, switching to that directory, and descending directly into application data by using the tab key. ... Lots of good advice. I'd just point out that there's an APPDATA environment variable, which is usually but not necessarily the Application Data directory under USERPROFILE. -- http://mail.python.org/mailman/listinfo/python-list
Re: (OT) Where Are Cookies Stored?
On Wed, Dec 16, 2009 at 11:33 AM, Dave Angel da...@ieee.org wrote: Victor Subervi wrote: On Tue, Dec 15, 2009 at 6:57 PM, r0g aioe@technicalbloke.com wrote: snip Cookies in FF for Windows are stored in an sqlite database in here... ~\Application Data\Mozilla\Firefox\Profiles\%XYZ%\firefox_profile\ Man, I searched C drive (the only drive) on this computer where I'm working (Internet cafe) for Application Data and nuttin. V How are you searching? Microsoft is so sure we don't want to see the gory details that they hide all sorts of things, by default. And especially on a public computer, you shouldn't even look with Explorer. As for searching with Explorer, there are not only design problems, but bugs as well. Get a command line, and do something like: dir /s c:\Firefox if you search directly for Application Data, you have to be sure to properly use quotes. You also need to add the /ah switch, since it's a hidden directory. So I cheat by searching for a subdirectory under it. You can also find the appdata directory by looking at the environment variable USERPROFILE, switching to that directory, and descending directly into application data by using the tab key. C:\set USERPROFILE USERPROFILE=C:\Documents and Settings\davea C:\cd Documents and Settings\davea C:\Documents and Settings\daveacd Application Data I got the last line by typingcd app then pressing the tab key (this adds the quotes and spaces for me) Anyway, once you're in the Firefox directory, do: C:\Documents and Settings\davea\Application Data\Mozilla\Firefoxdir /s cook* and you'll see the actual file. You can also search for it from the root, but I have 13 files cookies.* and 8 cookies.sqlite Incidentally, lots of interesting stuff is in the USERPROFILE directory, so it's a good thing to know how to quickly find. Different versions of Windows put it different places, but it ends with the logged-in user name. So user-specific data is typically stored there. Some versions of Python even include a directory under it in the sys.path directory list. That was great! Thanks, Dave! V -- http://mail.python.org/mailman/listinfo/python-list
Re: i re-write it
On Dec 17, 12:43 am, Diez B. Roggisch de...@nospam.web.de wrote: codefly wrote: error message is here.. when i type import code2 Traceback (most recent call last): File stdin, line 1, in module File code2.py, line 11 ~ ^ SyntaxError: invalid syntax and source code is here No, it isn't. The above error says line 11, but the code you show doesn't have 11 lines. From the above error, it looks as if you have a stray tilde-character on the last or so line in code.py. Remove it. Diez now.. another problem.. when i type me = code2() the error is here.. Traceback (most recent call last): File stdin, line 1, in module TypeError: 'module' object is not callable -- http://mail.python.org/mailman/listinfo/python-list
another problem..
now.. another problem.. when i type me = code2() the error is here.. Traceback (most recent call last): File stdin, line 1, in module TypeError: 'module' object is not callable -- http://mail.python.org/mailman/listinfo/python-list
I have a cross platform os.startfile but I need to asociate files with xdg-open in linux how do I do that??
#this should be a cross platform example of os.startfile ( startfile ) #for windows and linux. this is the first version and #linux, mac, other os's commands for exceptions to the #rule would be appreciated. at some point this will be #in the dex tracker project. import os import subprocess def startfile(filename) try: os.startfile(filename) except: subprocess.Popen(['xdg-open', filename]) ___ http://dextracker.blogspot.com/ -- http://mail.python.org/mailman/listinfo/python-list
Python Imaging Library status
Hi guys, is the famous PIL now a dead project? Latest available download is from 2006 and I still don't see any signs of having it updated for Python 2.6 or 3.x versions. Thanks in Advance, Paulo -- http://mail.python.org/mailman/listinfo/python-list
Re: basic grammer error..
codefly wrote: class codefly: def WaitFreecatz(self, hours): hours = self.hours i = 1 while i hours: print 'i wait %s hours' %(i) i = i+1 if i == hours: print '\nhe never comes' run error// what's wrong?? You can't get a runtime error there, because nothing instantiates the class, nor calls its method. Once you add that code, you'll find an uninitialized instance attribute, plus a couple of logic errors. So, if you actually have a question, how about stating it completely? Given a complete code sample, you run it (on what version of what computer language, on what OS), and you get some error (show complete traceback). Explain what you tried, to identify the error, and then state what has you stumped. And if you don't get a Python error, but get the wrong results, then state what you expected, and what you got. DaveA -- http://mail.python.org/mailman/listinfo/python-list
Re: i re-write it
codefly wrote: On Dec 17, 12:43 am, Diez B. Roggisch de...@nospam.web.de wrote: codefly wrote: error message is here.. when i type import code2 Traceback (most recent call last): File stdin, line 1, in module File code2.py, line 11 ~ ^ SyntaxError: invalid syntax and source code is here No, it isn't. The above error says line 11, but the code you show doesn't have 11 lines. From the above error, it looks as if you have a stray tilde-character on the last or so line in code.py. Remove it. Diez now.. another problem.. when i type me = code2() the error is here.. Traceback (most recent call last): File stdin, line 1, in module TypeError: 'module' object is not callable Not surprisingly, because you try to instantiate a module. Which isn't possible. What you most probably want is me = code2.codefly() May I suggest you move your questions here: http://mail.python.org/mailman/listinfo/tutor It seems that you have some very basic misconceptions about python, so that might be a forum more geared towards your needs. Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: Wrapping paper, anyone ?
simon pianomaes...@gmail.com wrote in message news:a50b1c21-287b-498d-a8c3-51a3a2f94...@k9g2000vbl.googlegroups.com... #!/usr/bin/env python from math import * from random import * import cairo from cairo import Context What's cairo? -- http://mail.python.org/mailman/listinfo/python-list
Re: basic grammer error..
codefly a écrit : class codefly: def WaitFreecatz(self, hours): hours = self.hours i = 1 while i hours: print 'i wait %s hours' %(i) i = i+1 if i == hours: print '\nhe never comes' run error// what's wrong?? wrt/ the code : bad capitalisation on the class name and method name, access to an inexistant attribute, useless param 'hours' (not used), failure to use the appropriate iteration construct. wrt/ your post: failure to post both the full traceback and the minimal required code to produce this traceback. -- http://mail.python.org/mailman/listinfo/python-list
Re: I have a cross platform os.startfile but I need to asociate files with xdg-open in linux how do I do that??
On 16 Des, 17:03, eric_dex...@msn.com eric_dex...@msn.com wrote: #this should be a cross platform example of os.startfile ( startfile ) #for windows and linux. this is the first version and #linux, mac, other os's commands for exceptions to the #rule would be appreciated. at some point this will be #in the dex tracker project. You could look at the desktop package for something similar: http://pypi.python.org/pypi/desktop The desktop.open function supports a few extra workarounds, mostly because it pre-dates xdg-open. Paul -- http://mail.python.org/mailman/listinfo/python-list
Re: i re-write it
codefly a écrit : now.. another problem.. when i type me = code2() where ? and what is 'code2' in this context ? Sorry, my crystal ball is out for repair... the error is here.. Traceback (most recent call last): File stdin, line 1, in module TypeError: 'module' object is not callable Ok, so it's in the python shell, you imported your module named 'code2', and tried to call it. Well... the error message say it all: module objects are not callable (IOW : they are not functions). If I may ask : what's your background in programming ? -- http://mail.python.org/mailman/listinfo/python-list
Re: another problem..
codefly wrote: now.. another problem.. when i type me = code2() the error is here.. Traceback (most recent call last): File stdin, line 1, in module TypeError: 'module' object is not callable By creating a new thread for each new question, you're forcing yourself to repeat the code and environment answers, which you did not. So let's ignore this thread, and I'll respond on the previous one. -- http://mail.python.org/mailman/listinfo/python-list
Re: i re-write it
codefly wrote: On Dec 17, 12:43 am, Diez B. Roggisch de...@nospam.web.de wrote: codefly wrote: error message is here.. when i type import code2 Traceback (most recent call last): File stdin, line 1, in module File code2.py, line 11 ~ ^ SyntaxError: invalid syntax and source code is here No, it isn't. The above error says line 11, but the code you show doesn't have 11 lines. From the above error, it looks as if you have a stray tilde-character on the last or so line in code.py. Remove it. Diez now.. another problem.. when i type me = code2() the error is here.. Traceback (most recent call last): File stdin, line 1, in module TypeError: 'module' object is not callable Your code was/is in code2.py - class codefly: def WaitFreecatz(self, hours): hours = self.hours i =1 while i hours: print ' i wait for %s hours' %(i) i = i+1 if i ==hours: print 'he never comes' - The message is pretty clear. Why are you trying to call the module you just imported? Perhaps you meant to instantiate the class that was defined there. In that case, the syntax would be: me = code2.codefly() To save you some trouble on your next bug, let me point out that your class does not initialize its instance variable self.hoursThat's normally done in the __init__() method. Also, you can interactively see the objects of an object with the dir() function. So try dir(code2) dir(code2.codefly)and dir(me) DaveA -- http://mail.python.org/mailman/listinfo/python-list
Re: Wrapping paper, anyone ?
bartc wrote: simon pianomaes...@gmail.com wrote in message news:a50b1c21-287b-498d-a8c3-51a3a2f94...@k9g2000vbl.googlegroups.com... #!/usr/bin/env python from math import * from random import * import cairo from cairo import Context What's cairo? A vector graphics library. http://en.wikipedia.org/wiki/Cairo_(graphics) Roger. -- http://mail.python.org/mailman/listinfo/python-list
regex help
Hello everyone, I'm going nuts with some regex, could someone please show me what I'm doing wrong? I have an XMPP msg : message xmlns='jabber:client' to='n...@host.com' mynode xmlns='myprotocol:core' version='1.0' type='mytype' parameters param1123/param1 param2456/param2 /parameters payload type='plain'.../payload /mynode x xmlns='jabber:x:expire' seconds='15'/ /message the parameter node may be absent or empty (parameter/), the x node may be absent. I'd like to grab everything exept the payload nod and create something new using regex, with the XMPP message example above I'd get this : message xmlns='jabber:client' to='n...@host.com' mynode xmlns='myprotocol:core' version='1.0' type='mytype' parameters param1123/param1 param2456/param2 /parameters /mynode x xmlns='jabber:x:expire' seconds='15'/ /message for some reason my regex doesn't work correctly : r(message .*?).*?(mynode .*?).*?(?:(parameters.*?/parameters)|parameters/)?.*?(x .*/)? I group the opening message node, the opening mynode node and if the parameters node is present and not empty I group it and if the x node is present I group it. For some reason this doesn't work correctly : import re s1 = message xmlns='jabber:client' to='n...@host.com'mynode xmlns='myprotocol:core' version='1.0' type='mytype'parametersparam1123/param1param2456/param2/parameterspayload type='plain'.../payload/mynodex xmlns='jabber:x:expire' seconds='15'//message s2 = message xmlns='jabber:client' to='n...@host.com'mynode xmlns='myprotocol:core' version='1.0' type='mytype'parameters/payload type='plain'.../payload/mynodex xmlns='jabber:x:expire' seconds='15'//message s3 = message xmlns='jabber:client' to='n...@host.com'mynode xmlns='myprotocol:core' version='1.0' type='mytype'payload type='plain'.../payload/mynodex xmlns='jabber:x:expire' seconds='15'//message s4 = message xmlns='jabber:client' to='n...@host.com'mynode xmlns='myprotocol:core' version='1.0' type='mytype'parametersparam1123/param1param2456/param2/parameterspayload type='plain'.../payload/mynode/message s5 = message xmlns='jabber:client' to='n...@host.com'mynode xmlns='myprotocol:core' version='1.0' type='mytype'parameters/payload type='plain'.../payload/mynode/message s6 = message xmlns='jabber:client' to='n...@host.com'mynode xmlns='myprotocol:core' version='1.0' type='mytype'payload type='plain'.../payload/mynode/message exp = r(message .*?).*?(mynode .*?).*?(?:(parameters.*?/parameters)|parameters/)?.*?(x .*/)? re.match(exp, s1).groups() (message xmlns='jabber:client' to='n...@host.com', mynode xmlns='myprotocol:core' version='1.0' type='mytype', 'parametersparam1123/param1param2456/param2/parameters', None) re.match(exp, s2).groups() (message xmlns='jabber:client' to='n...@host.com', mynode xmlns='myprotocol:core' version='1.0' type='mytype', None, None) re.match(exp, s3).groups() (message xmlns='jabber:client' to='n...@host.com', mynode xmlns='myprotocol:core' version='1.0' type='mytype', None, None) re.match(exp, s4).groups() (message xmlns='jabber:client' to='n...@host.com', mynode xmlns='myprotocol:core' version='1.0' type='mytype', 'parametersparam1123/param1param2456/param2/parameters', None) re.match(exp, s5).groups() (message xmlns='jabber:client' to='n...@host.com', mynode xmlns='myprotocol:core' version='1.0' type='mytype', None, None) re.match(exp, s6).groups() (message xmlns='jabber:client' to='n...@host.com', mynode xmlns='myprotocol:core' version='1.0' type='mytype', None, None) Does someone know what is wrong with my expression? Thank you, Gabriel -- http://mail.python.org/mailman/listinfo/python-list
Re: Raw string substitution problem
--- On Wed, 12/16/09, Gabriel Genellina gagsl-...@yahoo.com.ar wrote:
From: Gabriel Genellina gagsl-...@yahoo.com.ar
Subject: Re: Raw string substitution problem
To: python-list@python.org
Date: Wednesday, December 16, 2009, 9:35 AM
En Wed, 16 Dec 2009 11:09:32 -0300,
Ed Keith e_...@yahoo.com
escribió:
I am having a problem when substituting a raw string.
When I do the following:
re.sub('abc', r'a\nb\nc', '123abcdefg')
I get
123a
b
cdefg
what I want is
r'123a\nb\ncdefg'
From http://docs.python.org/library/re.html#re.sub
re.sub(pattern, repl, string[, count])
...repl can be a string or a function;
if
it is a string, any backslash escapes
in
it are processed. That is, \n is
converted
to a single newline character, \r is
converted to a linefeed, and so forth.
So you'll have to double your backslashes:
py re.sub('abc', r'a\\nb\\nc', '123abcdefg')
'123a\\nb\\ncdefg'
--Gabriel Genellina
--http://mail.python.org/mailman/listinfo/python-list
That is going to be a nontrivial exercise. I have control over the pattern, but
the texts to be substituted and substituted into will be read from user
supplied files. I need to reproduce the exact text the is read from the file.
Maybe what I should do is use re to break the string into two pieces, the part
before the pattern to be replaces and the part after it, then splice the
replacement text in between them. Seems like doing it the hard way, but it
should work.
Thanks,
-EdK
--
http://mail.python.org/mailman/listinfo/python-list
Re: regex help
Gabriel Rossetti wrote: Hello everyone, I'm going nuts with some regex, could someone please show me what I'm doing wrong? I have an XMPP msg : snip Does someone know what is wrong with my expression? Thank you, Gabriel Gabriel, trying to debug a long regex in situ can be a nightmare however the following technique always works for me... Use the interactive interpreter and see if half the regex works, if it does your problem is in the second half, if not it's in the first so try the first half of that and so on an so forth. You'll find the point at which it goes wrong in a snip. Non-trivial regexes are always best built up and tested a bit at a time, the interactive interpreter is great for this. Roger. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python tricks with applescript in OS-X
Thanks for the pointers to appscript, and for the comments on the page. I have changed the examples at http://juanreyero.com/article/python/os-x-python.html to reflect them. Cheers, Juan -- http://juanreyero.com -- http://mail.python.org/mailman/listinfo/python-list
Re: another problem..
On 2009-12-16, codefly coron...@gmail.com wrote: now.. another problem.. Sorry to be so blunt, but your main problem is that you don't know how to ask questions. Fix that, and everything else will become much easier: 1) Read this: http://catb.org/~esr/faqs/smart-questions.html 2) Read it again. 3) Read these sections one more time: http://catb.org/~esr/faqs/smart-questions.html#beprecise http://catb.org/~esr/faqs/smart-questions.html#code -- Grant Edwards grante Yow! Is it NOUVELLE at CUISINE when 3 olives are visi.comstruggling with a scallop in a plate of SAUCE MORNAY? -- http://mail.python.org/mailman/listinfo/python-list
Re: regex help
On Dec 16, 10:22 am, r0g aioe@technicalbloke.com wrote: Gabriel Rossetti wrote: Hello everyone, I'm going nuts with some regex, could someone please show me what I'm doing wrong? I have an XMPP msg : snip Does someone know what is wrong with my expression? Thank you, Gabriel Gabriel, trying to debug a long regex in situ can be a nightmare however the following technique always works for me... Use the interactive interpreter and see if half the regex works, if it does your problem is in the second half, if not it's in the first so try the first half of that and so on an so forth. You'll find the point at which it goes wrong in a snip. Non-trivial regexes are always best built up and tested a bit at a time, the interactive interpreter is great for this. Roger. I'll just add that the now you have two problems quip applies here, especially when there are very good XML parsing libraries for Python that will keep you from having to reinvent the wheel for every little change. See sections 20.5 through 20.13 of the Python Documentation for several built-in options, and I'm sure there are many community projects that may fit the bill if none of those happen to. Personally, I consider regular expressions of any substantial length and complexity to be bad practice as it inhibits readability and maintainability. They are also decidedly non-Zen on at least Readability counts and Sparse is better than dense. Intchanter Daniel Fackrell P.S. I'm not sure how any of these libraries are implemented yet, but I'd hope they're using a finite state machine tailored to the parsing task rather than using regexes, but even if they do the latter, having that abstracted out in a mature library with a clean interface is still a huge win. -- http://mail.python.org/mailman/listinfo/python-list
Apple Mac OS X 10.6 support compatability with Python 3 ?
I've been given a MAC AIR laptop with OS X 10.6 Snow Leopard. On my desktop I dual boot with XP - Ubuntu and have Python on both. Unfortunately all my Python programs are written on Windows XP and I heavily rely on WConio for console I/O. Called Apple tech support. The technician had never heard of Python, ascertained the MAC AIR does not come preloaded with Python and did not know if Python 3 would run under OS X 10.6. This was beyond their expertise. Does anyone have experience with OS X ? Could I use WConio in a Windows emulator ? I have no experience with MACs and am debating whether to send this back before opening. Thanks. Dave WB3DWE -- http://mail.python.org/mailman/listinfo/python-list
Re: iterators and views of lists
On Dec 16, 1:58 pm, Anh Hai Trinh anh.hai.tr...@gmail.com wrote: You might be interested in this library http://pypi.python.org/pypi/ stream. You can easily create arbitrary slice, for example i = mylist takei(primes()) will return an iterator over the items of mylist with a prime number index, given that primes() return an iterator over prime numbers. Nice :-) I was starting to experiment data flow programming with python myself, although I'm just playing with it.. I find the idea of data flow programming fascinatin, and wonder if it can be considered a general-purpose program paradigm. Ciao - FB -- http://mail.python.org/mailman/listinfo/python-list
Re: Raw string substitution problem
Ed Keith wrote:
--- On Wed, 12/16/09, Gabriel Genellina gagsl-...@yahoo.com.ar wrote:
From: Gabriel Genellina gagsl-...@yahoo.com.ar
Subject: Re: Raw string substitution problem
To: python-list@python.org
Date: Wednesday, December 16, 2009, 9:35 AM
En Wed, 16 Dec 2009 11:09:32 -0300,
Ed Keith e_...@yahoo.com
escribió:
I am having a problem when substituting a raw string.
When I do the following:
re.sub('abc', r'a\nb\nc', '123abcdefg')
I get
123a
b
cdefg
what I want is
r'123a\nb\ncdefg'
From http://docs.python.org/library/re.html#re.sub
re.sub(pattern, repl, string[, count])
...repl can be a string or a function;
if
it is a string, any backslash escapes
in
it are processed. That is, \n is
converted
to a single newline character, \r is
converted to a linefeed, and so forth.
So you'll have to double your backslashes:
py re.sub('abc', r'a\\nb\\nc', '123abcdefg')
'123a\\nb\\ncdefg'
--Gabriel Genellina
--http://mail.python.org/mailman/listinfo/python-list
That is going to be a nontrivial exercise. I have control over the
pattern, but the texts to be substituted and substituted into will be read
from user supplied files. I need to reproduce the exact text the is read
from the file.
There is a helper function re.escape() that you can use to sanitize the
substitution:
print re.sub('abc', re.escape(r'a\nb\nc'), '123abcdefg')
123a\nb\ncdefg
Peter
--
http://mail.python.org/mailman/listinfo/python-list
python and command shell on Windows
Hi I am trying to execute a windows command based on a shell by mean of python. I have proven subprocess test=subprocess.Popen (['shell_command'],shell=True,stdin=PIPE,stdout=PIPE) Initally, all seems ok, but, after seconds the python shell is frozen. Does someone know alternative ways valid for windows OS? Thanks in advance josu -- http://mail.python.org/mailman/listinfo/python-list
Re: Apple Mac OS X 10.6 support compatability with Python 3 ?
On Dec 16, 2009, at 12:41 PM, pdlem...@earthlink.net wrote: I've been given a MAC AIR laptop with OS X 10.6 Snow Leopard. On my desktop I dual boot with XP - Ubuntu and have Python on both. Unfortunately all my Python programs are written on Windows XP and I heavily rely on WConio for console I/O. Called Apple tech support. The technician had never heard of Python, ascertained the MAC AIR does not come preloaded with Python and did not know if Python 3 would run under OS X 10.6. This was beyond their expertise. Sounds like the tech you spoke to was a knucklehead. http://developer.apple.com/mac/library/documentation/Darwin/Reference/ManPages/man1/python.1.html I've read about some Python-related headaches under Snow Leopard stemming from the fact that the stock Python is 64 bit and some 3rd party extensions assume/are compiled as 32 bit. Does anyone have experience with OS X ? Could I use WConio in a Windows emulator ? I have no experience with MACs and am debating whether to send this back before opening. WConio I don't know about. I'm not sure what you mean by a Windows emulator. I run Windows XP under VirtualBox with OS X as the host, and that works fine for me. That's pretty heavy to call emulation though. Hope this helps at least a little Philip -- http://mail.python.org/mailman/listinfo/python-list
Re: Apple Mac OS X 10.6 support compatability with Python 3 ?
On Wed, Dec 16, 2009 at 09:41, pdlem...@earthlink.net wrote: I've been given a MAC AIR laptop with OS X 10.6 Snow Leopard. On my desktop I dual boot with XP - Ubuntu and have Python on both. Unfortunately all my Python programs are written on Windows XP and I heavily rely on WConio for console I/O. Called Apple tech support. The technician had never heard of Python, ascertained the MAC AIR does not come preloaded with Python As far as I am aware, OS X always comes with Python. I'm not sure if 10.6 comes with Python 2.6 or 2.5, but one or the other is certainly there, unless you have some sort of stripped-down install I'm not familiar with. Does anyone have experience with OS X ? Could I use WConio in a Windows emulator ? I don't know much about WConio, but a quick search indicates it does for Windows what curses does for Unix-like OSes. I believe OS X is sufficiently Unix-like that curses will do the job. -- Rami Chowdhury Never assume malice when stupidity will suffice. -- Hanlon's Razor 408-597-7068 (US) / 07875-841-046 (UK) / 0189-245544 (BD) -- http://mail.python.org/mailman/listinfo/python-list
Re: Apple Mac OS X 10.6 support compatability with Python 3 ?
pdlem...@earthlink.net wrote: I've been given a MAC AIR laptop with OS X 10.6 Snow Leopard. On my desktop I dual boot with XP - Ubuntu and have Python on both. Unfortunately all my Python programs are written on Windows XP and I heavily rely on WConio for console I/O. Called Apple tech support. The technician had never heard of Python, ascertained the MAC AIR does not come preloaded with Python and did not know if Python 3 would run under OS X 10.6. This was beyond their expertise. Does anyone have experience with OS X ? Could I use WConio in a Windows emulator ? I have no experience with MACs and am debating whether to send this back before opening. Thanks. Dave WB3DWE Snow leopard comes with 2.6 so that shouldn't be a problem but I think you're probably going to be SOL on the Wconio front - its a windows only module AFAIK. The equivalent on *nix os's is ncurses so if you want your apps to support Windows, Linux Mac you're probably going to have to use both. Whatever you decide to do about the above you'd be mad to send back an AIR anyway, that's a v.sleek bit of kit you've been 'given'! You can install Windows and Linux via bootcamp if you want, or run them in a VM, macs are very nearly standard PC's now anyway. I suppose if you want a desktop replacement rather than something super portable you might find some other machines more suitable but if you want to be coding on the go you'd be hard pushed to find a nicer machine - except maybe the thinkpad X300 for the removable battery and optical drive. Roger. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python Imaging Library status
En Wed, 16 Dec 2009 13:07:30 -0300, paulo.jpi...@gmail.com paulo.jpi...@gmail.com escribió: is the famous PIL now a dead project? Latest available download is from 2006 and I still don't see any signs of having it updated for Python 2.6 or 3.x versions. Version 1.1.7 is in beta. Here you can find all available versions: http://effbot.org/downloads/#pil There is no official 3.x version yet, but ask in the image-SIG list. -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
Re: Apple Mac OS X 10.6 support compatability with Python 3 ?
On Dec 16, 5:41 pm, pdlem...@earthlink.net wrote: I've been given a MAC AIR laptop with OS X 10.6 Snow Leopard. On my desktop I dual boot with XP - Ubuntu and have Python on both. Unfortunately all my Python programs are written on Windows XP and I heavily rely on WConio for console I/O. Called Apple tech support. The technician had never heard of Python, ascertained the MAC AIR does not come preloaded with Python and did not know if Python 3 would run under OS X 10.6. This was beyond their expertise. Unless the MacBook Air has some sort of cut-down version of Snow Leopard (which I doubt), it'll have Python 2.5.4 and Python 2.6.1 pre-installed. You'd have to install Python 3.1 yourself if you want it, but it runs just fine on OS X 10.6 (and earlier). There may be some problems with the Python 3.1.1 version from the official download page, though, since Python 3.1.1 was released *before* Snow Leopard was. An easy way to get a working Python 3.1.1 on OS X 10.6 is to install MacPorts and then do a 'sudo port install python31'. I don't know anything about WConio. -- Mark -- http://mail.python.org/mailman/listinfo/python-list
Re: Apple Mac OS X 10.6 support compatability with Python 3 ?
On Dec 16, 11:41 am, pdlem...@earthlink.net wrote: I've been given a MAC AIR laptop with OS X 10.6 Snow Leopard. On my desktop I dual boot with XP - Ubuntu and have Python on both. Unfortunately all my Python programs are written on Windows XP and I heavily rely on WConio for console I/O. Called Apple tech support. The technician had never heard of Python, ascertained the MAC AIR does not come preloaded with Python and did not know if Python 3 would run under OS X 10.6. This was beyond their expertise. No, it's not. Call them back and if you get that bullshit again, ask to speak to the supervisor. And then ask for his supervisor, if necessary. It probably doesn't come with 3.1, you just got ahold of an idiot. BTW, I was just looking at an iMac the other day and it had 2.3, 2.4 and 2.5 installed. Beyond their expertise indeed. Does anyone have experience with OS X ? Could I use WConio in a Windows emulator ? I have no experience with MACs and am debating whether to send this back before opening. Thanks. Dave WB3DWE -- http://mail.python.org/mailman/listinfo/python-list
Re: Python Imaging Library status
On 12/16/2009 8:07 AM paulo.jpi...@gmail.com said... Hi guys, is the famous PIL now a dead project? Latest available download is from 2006 and I still don't see any signs of having it updated for Python 2.6 or 3.x versions. PIL for Python 2.6 is available for download from http://www.pythonware.com/products/pil/ -- I don't know about 3.x plans... Emile -- http://mail.python.org/mailman/listinfo/python-list
Re: iterators and views of lists
On Wed, Dec 16, 2009 at 4:16 AM, Paul Rudin paul.nos...@rudin.co.uk wrote: Steven D'Aprano st...@remove-this-cybersource.com.au writes: I'm sympathetic to your request for list views. I've often wanted some way to cleanly and neatly do this: for item in seq[1:]: process(item) without making an unnecessary copy of almost all of seq. I don't know how it's implemented - but presumably itertools.islice could provide what you're asking for? -- http://mail.python.org/mailman/listinfo/python-list itertools.islice returns an iterator. My main point is that in python iterators are weak and can't be used to write many types of algorithms. They only go in one direction and they can't write to the collection. Another poster mentioned a stream library that is also iterator based. Basically I'm saying that anything with iterators is pretty limited because of the interface they present. See section 6.5 here for the iterator protocol: http://docs.python.org/library/stdtypes.html Basically this is only useful for writing for loops or map/reduce operations. However, python's primary datastructures, the dynamic array (list) and hashtable (dictionary) are more powerful than that. -- http://mail.python.org/mailman/listinfo/python-list
Python training in Florida, January 19-21
Don't miss your chance to attend our upcoming Florida Python training class next month. This 3-day public class is being held January 19-21, in Sarasota, Florida. It is open to both individual and group enrollments. For more details on the class, as well as registration instructions, please visit the class web page: http://home.earthlink.net/~python-training/2010-public-classes.html If you are unable to attend in January, our next Sarasota class is already scheduled for April 6-8. Thanks, and we hope to see you at a Python class in sunny and warm Florida soon. --Mark Lutz at Python Training Services -- http://mail.python.org/mailman/listinfo/python-list
Fwd: Re: Logging question
Original Message Subject:Re: Logging question Date: Tue, 15 Dec 2009 18:28:54 + From: Vinay Sajip at Red Dove vinay_sa...@red-dove.com To: Yaroslav Molochko ono...@gmail.com On 15/12/2009 14:29, Yaroslav Molochko wrote: Hello Vinay Sajip, my name is Yaroslav, I'm trying to use your logging module, and it's working quite good. There is one issue I've figure out: logging.basicConfig(filename=c_logfile, level=logging_level, # By default logging is in INFO mode. You can change it to DEBUG by -v variable format=gert :%(asctime)-10s%(msecs)d:%(levelname)s: %(message)s, datefmt='%d%m %H%M%S.',) if I use it, and delete the logfile it will not create the logfile again. Only restart of the application will do. Is there any workaround for this? Hello Yaroslav, Once you create a FileHandler, the file belongs to the logging package which assumes it has exclusive access to the file. If the file is deleted, in order to log to it again, you need to remove the existing handler, close it, open a new handler, and attach it to the root logger. For this you will have to use the other logging API functions. Please post questions like this on comp.lang.python so that others can join in the discussion. Regards, Vinay Sajip -- http://mail.python.org/mailman/listinfo/python-list
Re: ftplib retrlines timeout
I've had experiences with some python mail servers that time out connections
if data from the socket is not sent to the application within the timeout
parameter.
I have seen a python app on FreeBSD that would timeout a connection after
600 seconds if freebsd did not receive at least 32 kb of data within the 600
second timeout. FreeBSD would only send from the buffer to the app if there
was 32kb of data, unless TCP segments were received with the PUSH flag set
which would force a flush of the network buffer.
It sounds like this is the behavior Brendan is seeing.
Auburn fans are like slinkys... not really good for anything but they still
bring a smile to your face when you push them down a flight of stairs.
To argue that honorable conduct is only required against an honorable enemy
degrades the Americans who must carry out the orders. -- Charles Krulak,
Former Commandant of the Marine Corps
We are all slave to our own paradigm. -- Joshua Williams
If the letters PhD appear after a person's name, that person will remain
outdoors even after it's started raining. -- Jeff Kay
On Wed, Dec 16, 2009 at 7:41 AM, Brendan brendandetra...@yahoo.com wrote:
On Dec 15, 6:17 pm, Jennifer owenzhang.chic...@gmail.com wrote:
I am writing a program that has a requirement for a timeout of
retrlines after the connection established. I just wonder if timeout
of ftplib.FTP('.xxx.com',username,password,timeout) will work for
retrlines method after the connection established. Or
socket.setdefaulttimeout will work in this case. Please let me know.
What exception will be throwed if ftp.retrlines timed out.
Many Thanks!
- Jennifer
I asked a similar question on here a few days ago and got no response,
however I tried a large download which timed out with the following:
Traceback (most recent call last):
File ./download_r1_neodf.py, line 167, in module
result = ftp.quit()
File /usr/local/lib/python2.6/ftplib.py, line 566, in quit
resp = self.voidcmd('QUIT')
File /usr/local/lib/python2.6/ftplib.py, line 248, in voidcmd
return self.voidresp()
File /usr/local/lib/python2.6/ftplib.py, line 223, in voidresp
resp = self.getresp()
File /usr/local/lib/python2.6/ftplib.py, line 209, in getresp
resp = self.getmultiline()
File /usr/local/lib/python2.6/ftplib.py, line 195, in getmultiline
line = self.getline()
File /usr/local/lib/python2.6/ftplib.py, line 182, in getline
line = self.file.readline()
File /usr/local/lib/python2.6/socket.py, line 406, in readline
data = self._sock.recv(self._rbufsize)
socket.error: [Errno 110] Connection timed out
BTW, if you want to use the timeout paramter, you must also use the
account parameter. Set it to ''.
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Re: Raw string substitution problem
En Wed, 16 Dec 2009 14:51:08 -0300, Peter Otten __pete...@web.de
escribió:
Ed Keith wrote:
--- On Wed, 12/16/09, Gabriel Genellina gagsl-...@yahoo.com.ar wrote:
Ed Keith e_...@yahoo.com
escribió:
I am having a problem when substituting a raw string.
When I do the following:
re.sub('abc', r'a\nb\nc', '123abcdefg')
I get
123a
b
cdefg
what I want is
r'123a\nb\ncdefg'
So you'll have to double your backslashes:
py re.sub('abc', r'a\\nb\\nc', '123abcdefg')
'123a\\nb\\ncdefg'
That is going to be a nontrivial exercise. I have control over the
pattern, but the texts to be substituted and substituted into will be
read
from user supplied files. I need to reproduce the exact text the is read
from the file.
There is a helper function re.escape() that you can use to sanitize the
substitution:
print re.sub('abc', re.escape(r'a\nb\nc'), '123abcdefg')
123a\nb\ncdefg
Unfortunately re.escape does much more than that:
py print re.sub('abc', re.escape(r'a.b.c'), '123abcdefg')
123a\.b\.cdefg
I think the string_escape encoding is what the OP needs:
py print re.sub('abc', r'a\n(b.c)\nd'.encode(string_escape),
'123abcdefg')
123a\n(b.c)\nddefg
--
Gabriel Genellina
--
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Re: Python Imaging Library status
On 16 Dez., 19:21, Gabriel Genellina gagsl-...@yahoo.com.ar wrote: En Wed, 16 Dec 2009 13:07:30 -0300, paulo.jpi...@gmail.com paulo.jpi...@gmail.com escribió: is the famous PIL now a dead project? Latest available download is from 2006 and I still don't see any signs of having it updated for Python 2.6 or 3.x versions. Version 1.1.7 is in beta. Here you can find all available versions:http://effbot.org/downloads/#pil There is no official 3.x version yet, but ask in the image-SIG list. -- Gabriel Genellina Thanks for the quick feedback, it is good to know that PIL is still alive. Paulo -- http://mail.python.org/mailman/listinfo/python-list
Re: Object Relational Mappers are evil (a meditation)
r0g aioe@technicalbloke.com writes: J Kenneth King wrote: Steven D'Aprano st...@remove-this-cybersource.com.au writes: On Fri, 11 Dec 2009 19:20:21 -0500, Steve Holden wrote: snip Hear, hear! That's all very well, but some languages and techniques encourage the programmer to write bad code. That's just BS. Bad code doesn't just write itself. Programmers write bad code. And ignorance is not an excuse. Just because a language allows a programmer to write sloppy code doesn't put the language at fault for the bad code programmers write with it. Okay, as long as you realize the corollary of your argument is: It is impossible for a language to encourage programmers to write good code and promote good programming practices by design. I'm not sure that's entirely true either. I think python's one way to do something design philosophy goes some way toward that, as does Smalltalk's enforced message passing. I think PHP's superglobals and namespacing encourage bad practices (or used to back in the day), as do Basic's GOTO and Ecmascript's prototype overriding. I think your corollary is slightly misleading. It would be more apt to say, Just because a language allows a programmer to write good code doesn't mean that the language is responsible for the good code programmers write with it. It is the responsibility of the programmer to recognize the advantages and flaws of their tools. PHP doesn't encourage a programmer to be a bad programmer because it lacks name-spaces or because BASIC has GOTO statements. A bad programmer will be a bad programmer because they don't understand what makes these features distinct, useful, or damaging. The language doesn't encourage anything. It's just a medium like oil paints and canvas. A painting can be good or bad despite the medium it is constructed on. The skill of the painter is what matters. Surely a language CAN be said to encourage kludges and sloppiness if it allows a good way and a bad way and makes the bad way much easier to implement or understand for noobs. Roger. The programmer can be encouraged to use kludges and produce sloppy code. Whether by ignorance or inflated ego. Languages with more choice just give them more rope to hang themselves with. -- http://mail.python.org/mailman/listinfo/python-list
Re: Raw string substitution problem
Gabriel Genellina wrote:
En Wed, 16 Dec 2009 14:51:08 -0300, Peter Otten __pete...@web.de
escribió:
Ed Keith wrote:
--- On Wed, 12/16/09, Gabriel Genellina gagsl-...@yahoo.com.ar wrote:
Ed Keith e_...@yahoo.com
escribió:
I am having a problem when substituting a raw string.
When I do the following:
re.sub('abc', r'a\nb\nc', '123abcdefg')
I get
123a
b
cdefg
what I want is
r'123a\nb\ncdefg'
So you'll have to double your backslashes:
py re.sub('abc', r'a\\nb\\nc', '123abcdefg')
'123a\\nb\\ncdefg'
That is going to be a nontrivial exercise. I have control over the
pattern, but the texts to be substituted and substituted into will be
read
from user supplied files. I need to reproduce the exact text the is read
from the file.
There is a helper function re.escape() that you can use to sanitize the
substitution:
print re.sub('abc', re.escape(r'a\nb\nc'), '123abcdefg')
123a\nb\ncdefg
Unfortunately re.escape does much more than that:
py print re.sub('abc', re.escape(r'a.b.c'), '123abcdefg')
123a\.b\.cdefg
Sorry, I didn't think of that.
I think the string_escape encoding is what the OP needs:
py print re.sub('abc', r'a\n(b.c)\nd'.encode(string_escape),
'123abcdefg')
123a\n(b.c)\nddefg
Another possibility:
print re.sub('abc', lambda m: r'a\nb\n.c\a', '123abcdefg')
123a\nb\n.c\adefg
Peter
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How to create a self-destructing Tkinter dialog box?
Ok, I would like to put together a Python/Tkinter dialog box that displays a simple message and self-destructs after N seconds. Is there a simple way to do this? Thanks, --Steve -- http://mail.python.org/mailman/listinfo/python-list
Re: iterators and views of lists
On Dec 16, 2:48 pm, Brendan Miller catph...@catphive.net wrote: No, that's what I'm getting at... Most of the existing mutating algorithms in python (sort, reverse) operate over entire collections, not partial collections delimited by indexes... which would be really awkward anyway. Ok it can be done! The code is here: http://gist.github.com/258134. from listagent import listagent x = [22, 7, 2, -5, 8, 4] listagent(x)[1:].sort() x [22, -5, 2, 4, 7, 8] listagent(x)[::2].reverse() x [7, -5, 2, 4, 22, 8] Basically the agent refers to the original list only by address translation, and indeed made no copy of anything whatever! I implemented Shell sort but I suppose others are possible. The implementation is incomplete, for now you cannot do slice assignment, i.e. a = listagent(x)[::-2] a[1:] = [4, 2] but it should be easy to implement, and I'm too sleepy. Peace, aht -- http://mail.python.org/mailman/listinfo/python-list
Re: Raw string substitution problem
--- On Wed, 12/16/09, Peter Otten __pete...@web.de wrote:
Another possibility:
print re.sub('abc', lambda m: r'a\nb\n.c\a',
'123abcdefg')
123a\nb\n.c\adefg
I'm not sure whether that is clever, ugly, or just plain strange!
I think I'll stick with:
m = re.match('^(.*)abc(.*)$', '123abcdefg')
print m.group(1) + r'a\nb\n.c\a' + m.group(2)
123a\nb\n.c\adefg
It's much less likely to fry the poor maintenance programmer's mind.
-EdK
Ed Keith
e_...@yahoo.com
Blog: edkeith.blogspot.com
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Re: python and command shell on Windows
On Dec 16, 11:58 am, josu josuj...@gmail.com wrote: Hi I am trying to execute a windows command based on a shell by mean of python. I have proven subprocess test=subprocess.Popen (['shell_command'],shell=True,stdin=PIPE,stdout=PIPE) Initally, all seems ok, but, after seconds the python shell is frozen. Does someone know alternative ways valid for windows OS? Thanks in advance josu os.startfile() works you will find the pipe commands are different on unix and windows anyway. -- http://mail.python.org/mailman/listinfo/python-list
Re: I have a cross platform os.startfile but I need to asociate files with xdg-open in linux how do I do that??
On Dec 16, 10:36 am, Paul Boddie p...@boddie.org.uk wrote: On 16 Des, 17:03, eric_dex...@msn.com eric_dex...@msn.com wrote: #this should be a cross platform example of os.startfile ( startfile ) #for windows and linux. this is the first version and #linux, mac, other os's commands for exceptions to the #rule would be appreciated. at some point this will be #in the dex tracker project. You could look at the desktop package for something similar: http://pypi.python.org/pypi/desktop The desktop.open function supports a few extra workarounds, mostly because it pre-dates xdg-open. Paul Since desktop environments like KDE and GNOME provide mechanisms for running browsers and editors according to the identified type of a file or resource, just as Windows runs files or resources, it is appropriate to have a module which accesses these mechanisms. It is this kind of functionality that the desktop package aims to support. Note that this approach is arguably better I am concerned this means I cant do something like associate python files with python in artistx (ubuntu). It just associates text files with editors?? It does look like a cool package and I will look into that further. -- http://mail.python.org/mailman/listinfo/python-list
Re: Question to logging
On 16/12/2009 12:49, stefan.messerl...@postfinance.ch wrote: I have the following error and no clue, how to solve that. Up to python version 2.5 the following script worked without an error, but since python 2.6. I get the following error: #!/usr/bin/env python # -*- coding: ISO-8859-1 -*- import logging logging.getLogger().addHandler( logging.StreamHandler() ) log = logging.getLogger() t = äöü print this is printed : + t log.error( this is log.error : + t ) # running the above script with Python 2.5 $ ./x.py this is printed : äöü this is log.error : äöü # running the above script with Python 2.6 $ ./x.py this is printed : äöü Traceback (most recent call last): File /var/tmp/pf-python-2.6-2.6.1-root/appl_local/python-2.6/lib/python2.6/logging/__init__.py, line 765, in emit UnicodeDecodeError: 'ascii' codec can't decode byte 0xe4 in position 20: ordinal not in range(128) I found your answer of issue6991 in bugs.python.org, where somebody had a similar problem, but to be honest, I have no idea how to solve my problem. Can you please give me a tip what I have to change or where I can find more information ? Hello Stefan, You should pass a stream to StreamHandler which has an encoding attribute set to the appropriate encoding (presumably iso-8859-1) and ensure that your stream will encode any Unicode sent to it with that encoding. For example, import codecs ENCODING = 'iso-8859-1' # or whatever writer = codecs.getwriter(ENCODING) w = writer(sys.stderr) w.encoding = ENCODING ... handler = logging.StreamHandler(w) ... In future, please ask questions like this on comp.lang.python (python-list@python.org) to give others the chance to participate in any discussion. Regards, Vinay Sajip -- http://mail.python.org/mailman/listinfo/python-list
