🌐 Mailman 3 September 2007 - Python-list - python.org

Co-developers wanted: document markup language
by Torsten Bronger Sept. 1, 2007

Sept. 1, 2007

Hallöchen! Some LaTeX users in Aachen thought about a general-use markup language this spring. I wrote some code and a rough project description, however, we could need some help. If you are interested, visit the provisional project page at http://latex-bronger.sourceforge.net/gummi/ Tschö, Torsten. Crosspost & Followup-To: comp.lang.python -- Torsten Bronger, aquisgrana, europa vetus Jabber ID: bronger(a)jabber.org (See http://ime.webhop.org for ICQ, MSN, etc.)

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Paramiko performance doubts...
by dmorilha Sept. 1, 2007

Sept. 1, 2007

Hello all, I developed a solution using paramiko and a similar Telnetlib class to access a several number of network devices in replacement of using Pexpect library and openssh client. It worked so well but the bad performance made me think in how to improve Paramiko. Is there some way to do that, for example using some C extension or even other library? I would like to continue using Paramiko, but in production environment it could be compiled in a different way. Is this possible? If someone could help me I would appreciate that, Thanks,

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localizing a sort
by Ricardo Aráoz Sept. 1, 2007

Sept. 1, 2007

Hi, I've been working on sorting out some words. My locale is : >>> import locale >>> locale.getdefaultlocale() ('es_AR', 'cp1252') I do : >>> a = 'áéíóúäëïöüàèìòù' >>> print ''.join(sorted(a, cmp=lambda x,y: locale.strcoll(x,y))) aeiouàáäèéëìíïòóöùúü This is not what I am expecting. I was expecting : aáàäeéèëiíìï.....etc. The reason is that if you want to order some words (say for a dictionary (paper dict, where you look up words)) this is what happens : >>> a = 'palàbra de pàlabra de pblabra' >>> print ' '.join(sorted(a.split(), cmp=lambda x,y: locale.strcoll(x, y))) de de palàbra pblabra pàlabra While any human being would expect : de de palàbra pàlabra pblabra Does anybody know a way in which I could get the desired output? TIA

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Re: list index()
by Marc 'BlackJack' Rintsch Sept. 1, 2007

Sept. 1, 2007

On Sat, 01 Sep 2007 13:37:29 -0600, Michael L Torrie wrote: > What's wrong, then, with doing: > > if i in list: > print list.index(i) If `i` is in the list this does the linear lookup twice. > If we were to program this .index() method in some language that > enforces contracts, like haskell, then we'd say that .index() expects a > value that exists in the list. So if you violate the contract, why > should you expect to *not* get an exception. Doing it any other way, > though, makes the code a lot more error prone. Does Haskell exceptions? In Haskell I would expect such a function to return the `Maybe` type. Ciao, Marc 'BlackJack' Rintsch

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Re: datetime.timedelta division confusion
by Arnaud Delobelle Sept. 1, 2007

Sept. 1, 2007

On Sep 1, 7:28 pm, s...(a)pobox.com wrote: > Running from Subversion, I see confusing (to me) behavior related to > division of datetime.timedelta objects by integers: > > % python > Python 2.6a0 (trunk:57277:57280M, Aug 28 2007, 17:44:49) > [GCC 4.0.1 (Apple Computer, Inc. build 5367)] on darwin > Type "help", "copyright", "credits" or "license" for more information. > >>> import datetime > >>> d = datetime.timedelta(1) > >>> d / 2 > Traceback (most recent call last): > File "<stdin>", line 1, in <module> > TypeError: unsupported operand type(s) for /: 'datetime.timedelta' and 'int' > >>> d.__div__(2) > datetime.timedelta(0, 43200) > > When I run the interpreter under gdb's control with a breakpoint set in > delta_divide, the breakpoint is not reached in the first case, but it is in > the second. Is there something amiss with division of timedelta objects by > ints or am I just missing something? > > Skip Try d // 2 ? It may be that v2.6 considers / as __truediv__ and not __div__. I can reproduce this behaviour on 2.4: daffodil:~ arno$ python2.4 Python 2.4.3 (#1, Oct 20 2006, 12:58:47) [GCC 4.0.1 (Apple Computer, Inc. build 5247)] on darwin Type "help", "copyright", "credits" or "license" for more information. >>> from __future__ import division >>> import datetime >>> d = datetime.timedelta(1) >>> d/2 Traceback (most recent call last): File "<stdin>", line 1, in ? TypeError: unsupported operand type(s) for /: 'datetime.timedelta' and 'int' >>> d // 2 datetime.timedelta(0, 43200) >>> HTH -- Arnaud

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datetime.timedelta division confusion
by skip＠pobox.com Sept. 1, 2007

Sept. 1, 2007

Running from Subversion, I see confusing (to me) behavior related to division of datetime.timedelta objects by integers: % python Python 2.6a0 (trunk:57277:57280M, Aug 28 2007, 17:44:49) [GCC 4.0.1 (Apple Computer, Inc. build 5367)] on darwin Type "help", "copyright", "credits" or "license" for more information. >>> import datetime >>> d = datetime.timedelta(1) >>> d / 2 Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: unsupported operand type(s) for /: 'datetime.timedelta' and 'int' >>> d.__div__(2) datetime.timedelta(0, 43200) When I run the interpreter under gdb's control with a breakpoint set in delta_divide, the breakpoint is not reached in the first case, but it is in the second. Is there something amiss with division of timedelta objects by ints or am I just missing something? Skip

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nameerror upon calling function
by seancron Sept. 1, 2007

Sept. 1, 2007

Hi, I have a program that makes a call to a function in a different python script that I wrote. But, when I call the function I get the following error: NameError: global name 'WSDL' is not defined I can't figure out why I'm getting this error since WSDL should be defined. Here are the two scripts: weatherpy.py from xml.dom import minidom from SOAPpy import WSDL from libndfdsoap import ByDaySOAPRequest wsdlfile = 'http://www.weather.gov/forecasts/xml/DWMLgen/wsdl/ ndfdXML.wsdl' if __name__ == '__main__': ByDaySOAPRequest(39.0000, -77.0000, 2004-04-27, 7, '12 hourly') libndfdsoap.py def ByDaySOAPRequest(latitude, longitude, startDate, numDays, hrFormat): """Sends a SOAP request using the NDFDgenByDay method and stores the response in a file called weather.xml""" wsdlfile = 'http://www.weather.gov/forecasts/xml/DWMLgen/wsdl/ ndfdXML.wsdl' server = WSDL.Proxy(wsdlfile) response = server.NDFDgenByDay(latitude, longitude, startDate, numDays, hrFormat) xml = open('/weather.xml', 'w') xml.write(response) xml.close() return Can somebody please show me how to fix this error? Thanks, -Sean

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metaclasses: timestamping instances
by km Sept. 1, 2007

Sept. 1, 2007

Hi all, I have extended a prototype idea from Alex Martelli's resource on metaclasses regarding time stamping of instances. <code> import time class Meta(type): start = time.time() def __call__(cls, *args, **kw): print 'Meta start time %e'%cls.start x = super(Meta, cls).__call__(*args, **kw) current_time = time.time() x._created = current_time - Meta.start Meta.start = time.time() return x class X(object): __metaclass__ = Meta class Y(X): __metaclass__ = Meta pass a = X() print 'a time stamp %e'%a._created b = Y() print 'b time stamp %e'%b._created print abs(a._created - b._created) </code> I donot understand the difference between 1) setting __metaclass__ to 'Meta' in class Y 2) not setting __metaclass__ to Meta in class Y Why is the difference in behaviour of time stamping between 1 & 2 ? kindly enlighten regards, KM

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Re: Important Research Project
by Steve Holden Sept. 1, 2007

Sept. 1, 2007

Kenny McCormack wrote: > In article <lnsl60o492.fsf(a)nuthaus.mib.org>, > Keith Thompson <kst-u(a)mib.org> wrote: >> "E.D.G." <edgrsprj(a)ix.netcom.com> writes: >>> "CBFalconer" <cbfalconer(a)yahoo.com> wrote in message >>> news:46D6CA0E.E66ED5C8@yahoo.com... >>>> "E.D.G." wrote: >>>> Where is Perl described in the C standard? This seems rather OT. >>> It has been my experience that a person who is an expert with one computer >>> language can usually do reasonably well when working with other languages. >>> I am trying to find some people who can assist with getting a Perl program >>> running. It would probably be easier for expert programmers in any language >>> to help with this type of work compared with people such as myself who are >>> not experts in any programming language. >> CBFalconer's point is that this newsgroup (comp.lang.c, where he and I >> are both reading this) is for discussion of the C programming >> language. If you want to discuss something other than C, please find >> another forum. Massive cross-posts like this are rarely appropriate. > > IOW (for the OP and for the various readers in all these groups): > > The rod up Keith's butt has a rod up its butt. > > Note, incidentally, that this thread is yet the latest occurrence of a > phenomenon that I've observed many times in the past, and have > described here in clc on more than a few occasions. That is, somebody > starts a thread, posted to several different groups, in the hope of > getting help from at least one of them. The thread is pretty much > on-topic for most of the groups, primarily because the keepers of most > of the groups do not have rods up their butts. > > However, and this is the big however, one of the groups listed just > happens to be clc, where rod-filled butts are the norm. The result is > that all of the responses come from clc (including, of course, this one) > and, as we see, it's all topicality BS, and nobody ever ends up > discussing the original subject. Really a pity, that. > Well I am reading your response "here" on c.l.py, where there are no keepers because the lunatics have taken over the asylum. If clc has to deal with attitudes like yours then it seems there are two sides to the problem. Your own behavior would also be considered marginally acceptable, containing as it does an unsubstantiated ad hominem attack. Quite what you think you were doing to encourage the thread back on-topic I have no idea. While the OP may have been uninformed about the nature of usenet, at least he made his request in a polite and unobjectionable fashion. He received some good advice together with a certain amount of predictable but probably not fully-deserved hostility. Everybody makes mistakes. Just let them go by and give your fingers a rest. You can't police everyone, and you would be foolish to try. Save your efforts for the real trolls like Xah Lee, or are you fortunate enough to miss his folk wisdom on clc? regards Steve -- Steve Holden +1 571 484 6266 +1 800 494 3119 Holden Web LLC/Ltd http://www.holdenweb.com Skype: holdenweb http://del.icio.us/steve.holden --------------- Asciimercial ------------------ Get on the web: Blog, lens and tag the Internet Many services currently offer free registration ----------- Thank You for Reading -------------

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How to find out if the interpreter is a debug build?
by llothar Sept. 1, 2007

Sept. 1, 2007

How can i find out if a selected python interpreter (i only know the path name under which i should start it) is a debug build? I tried sys.api_version, sys.platform, sys.version, sys.version_info and there is no difference between "python.exe" and "python_d.exe". I'm pretty sure the information is stored somewhere but i can't find it. Please help.

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