🌐 Mailman 3 August 2012 - Python-list - python.org

Re: attribute is accessed from Nonetype
by Steven D'Aprano Aug. 4, 2012

Aug. 4, 2012

On Fri, 03 Aug 2012 19:03:20 -0400, Dave Angel wrote: > On 08/03/2012 06:41 PM, Chris Angelico wrote: >> On Sat, Aug 4, 2012 at 8:20 AM, Dave Angel <d(a)davea.name> wrote: >>> I'm sorry, what's not clear? Nonetype is not the same as NoneType. >>> Python is case sensitive. >> There isn't a NoneType either. I get a NameError. >> >> ChrisA > > NoneType isn't in the builtin namespace. It's in the types module. > > import types > a = types.Nonetype ^^^^^^^^ Oh the irony. After criticising a beginner for getting the case wrong, you have done exactly the same thing. A form of Muphry's Law (the Iron Law of Nitpicking) perhaps? http://en.wikipedia.org/wiki/Muphry%27s_law -- Steven

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Re: attribute is accessed from Nonetype
by Steven D'Aprano Aug. 4, 2012

Aug. 4, 2012

On Sat, 04 Aug 2012 08:41:20 +1000, Chris Angelico wrote: > On Sat, Aug 4, 2012 at 8:20 AM, Dave Angel <d(a)davea.name> wrote: >> I'm sorry, what's not clear? Nonetype is not the same as NoneType. >> Python is case sensitive. > > There isn't a NoneType either. I get a NameError. Shame on you :-P Ramit Prasad showed exactly how you can see NoneType in action in the part of the post you snipped from your reply. py> len(None) Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: object of type 'NoneType' has no len() NoneType *is* a standard type. It's just not bound to a publicly accessible name in the built-ins. But you can easily get access to the class using either: type(None) None.__class__ or in Python 2.6 at least, import types types.NoneType (although it has been removed from Python 3.2 for some reason). -- Steven

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attribute is accessed from Nonetype
by Shanth Kumar Aug. 3, 2012

Aug. 3, 2012

Hi ,All, I am Shanthkumar. Good to see the mailing list for python programmers. Please find my query below, In my source code in a python file e.g xyz.py couple of classes are defined also there is a wrapper class, a none object is declared in the file e.g temp=None from temp some attributes are being accessed in the files that are importing xyz.py even though temp is not initialised to any other object still it is none object attributes are being accessed from None object.Is there any significance of wrapper class here..? Can you please help me. -- Regards..., Shanthkumara O.D.

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Demise of Mr. Kenneth Gonsalves
by Anoop Thomas Mathew Aug. 3, 2012

Aug. 3, 2012

With my heartfelt condolence, I'd like to inform you all the unfortunate demise of Mr.Kenneth Gonsalves (KG - lawgon(a)thenilgiris.com), who was a strong advocate of Python, Django and Free Software in India. He had served as the President of IPSS(Indian Python Software Society), which initiated the PyCon India, done a lot of workshops on Python and was an active member in the Django user group. Anoop Thomas Mathew

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Re: simplified Python parsing question
by BartC Aug. 3, 2012

Aug. 3, 2012

"Eric S. Johansson" <esj(a)harvee.org> wrote in message news:mailman.2752.1343700723.4697.python-list@python.org... > On 7/30/2012 9:54 PM, Steven D'Aprano wrote: > It would please me greatly if you would be willing to try an experiment. > live my life for a while. Sit in a chair and tell somebody what to type > and where to move the mouse without moving your hands. keep your hands > gripping the arms or the sides of the chair. The rule is you can't touch > the keyboard you can't touch the mice, you can't point at the screen. I > suspect you would have a hard time surviving half a day with these > limitations. no embarrassment in that, most people wouldn't make it as far > as a half a day. Just using speech? Probably more people than you might think have had such experiences: anyone who's done software support over the telephone for a start! And in that scenario, they are effectively 'blind' too. -- Bartc

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Re: Calling Values
by subhabangalore＠gmail.com Aug. 3, 2012

Aug. 3, 2012

On Friday, August 3, 2012 10:50:52 PM UTC+5:30, Dennis Lee Bieber wrote: > On Fri, 3 Aug 2012 04:49:46 -0700 (PDT), Subhabrata > > <subhabangalore(a)gmail.com> declaimed the following in > > gmane.comp.python.general: > > > > > Dear Group, > > > > > > I am trying to call the values of one function in the another function in the following way: > > > > Technically, "the values of one function" are whatever it RETURNS; > > > > > def func1(): > > > num1=10 > > > num2=20 > > > print "The Second Number is:",num2 > > > return > > > > > This function returns None. > > > > Recommended software design practices are that any thing inside the > > function should be local to just that function -- a function should be a > > black box -- you call it with some data, and you obtain some results > > when it returns; what it does internally should be "invisible" and have > > no effect on any other code. > > > > Read: > > http://en.wikipedia.org/wiki/Coupling_%28computer_programming%29 > > (what you are attempting falls into "content coupling" if you change the > > use of "module" to "function") > > > > However, Python lets you declare names to be global (to the > > module/file). This is primarily meant to be used when a function must > > rebind a module level entity. (This would be "common coupling") > > > > def func1(): > > global num1, num2 > > ... > > > > But, as mentioned, that now makes num1 and num2 names that are known > > outside the functions. > > > > > def func2(): > > > num3=num1+num2 > > > num4=num3+num1 > > > print "New Number One is:",num3 > > > print "New Number Two is:",num4 > > > return > > > > > Misleading print statements, as you are NOT changing "number one" or > > "number two"; you've just created two NEW names (num3, num4). > > > > > I am preferring not to use argument passing or using class? Is there any alternate way? > > > > > > > Well, if you end func1 with > > > > return num1, num2 > > > > you can change func2 into: > > > > def func2(): > > n1, n2 = func1() > > num3 = n1 + n2 > > num4 = num3 + n1 > > ... > > -- > > Wulfraed Dennis Lee Bieber AF6VN > > wlfraed(a)ix.netcom.com HTTP://wlfraed.home.netcom.com/ Dear Group, Absolutely brilliant, Ramit. Dennis also came with almost same answer. Using global may not give clean results everytime. I wanted to say, >>> def func1(): num1=10 num2=20 print "The Second Number is:",num2 >>> def func2(): func1() num3=50 print "The New Number is:",num3 >>> func2() The Second Number is: 20 The New Number is: 50 The post went slightly wrong sorry. No, I experiment myself on idle evenings to experiment with coding etc so I think of problems, practice on them and try to see if any better code evolves. Nothing else. I posted and Steve did not comment perhaps never happens. He rebukes me so much from my early days here, I just enjoy it. Regards and best wishes, Subhabrata.

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unable to get simple html file up
by Smaran Harihar Aug. 3, 2012

Aug. 3, 2012

Hi, I am following this tutorial<http://pointlessprogramming.wordpress.com/2011/02/13/python-cgi-tutorial-2/> and i am not able to get the link.py <http://dpaste.de/wJQ0d/> up and running. I should be looking at Html file with link directing to the cgi script. But strangely i can't even see the page itself. Any idea why it is like this? I have made link.py executable. Here is the server.py<http://dpaste.de/iEPTk/> . -- Thanks & Regards Smaran Harihar

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Re: xlrd 0.8.0 released!
by pruebauno＠latinmail.com Aug. 3, 2012

Aug. 3, 2012

On Wednesday, August 1, 2012 11:01:56 AM UTC-4, Chris Withers wrote: > Hi All, > > > > I'm pleased to announce the release of xlrd 0.8.0: > > > > http://pypi.python.org/pypi/xlrd/0.8.0 > > > > This release finally lands the support for both .xls and .xlsx files. > > Many thanks to John Machin for all his work on making this happen. > > Opening of .xlsx files is seamless, just use xlrd as you did before and > > it all should "just work". > > > > xlrd 0.8.0 is also the first release that that targets Python 2.6 and > > 2.7, but no Python 3 just yet. Python 2.5 and below may work but are not > > supported. If you need to use Python 2.5 or earlier, please stick to > > xlrd 0.7.x. > > > > Speaking of xlrd 0.7.x, that's now in "requested maintenance only" mode > > ;-) That means, if possible, use 0.8.x. If you have a really good reason > > for sticking with 0.7.x, and you find a bug that you can't work around, > > then please make this clear on the python-excel(a)googlegroups.com and > > we'll see what we can do. > > > > If you find any problems, please ask about them on the list, or submit > > an issue on GitHub: > > > > https://github.com/python-excel/xlrd/issues > > > > Full details of all things Python and Excel related can be found here: > > > > http://www.python-excel.org/ > > > > cheers, > > > > Chris > > > > -- > > Simplistix - Content Management, Batch Processing & Python Consulting > > - http://www.simplistix.co.uk Congrats! Being able to read Office 2007 files will be very useful. Looking forward to the Python 3 support.

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Re: Eclipse and the Python plugin
by lipska the kat Aug. 3, 2012

Aug. 3, 2012

On 03/08/12 13:40, Mark Lawrence wrote: > On 03/08/2012 13:23, lipska the kat wrote: >> On 03/08/12 13:10, Mark Lawrence wrote: >>> On 03/08/2012 12:34, lipska the kat wrote: >>>> A while ago someone asked me what I thought of the Eclipse plugin for >>>> python, snip >>> it's like trying to >>> run a legless carthorse in the Grand National or the Derby. >> >> :-)) There's this image in my mind ... jeez, get a grip. >> >> I'm sorry to hear that, what would you recommend. > > Sorry I can't recommend anything as I use Python for small personal > projects, so I find a combination of Notepad++ and PythonWin totally > adequate for my needs. Eclipse is also popular, so simply because I > don't like it speed wise doesn't mean that it's not for you. I've been using it for years for Java, I just recently found the Python plugin. > Picking an IDE often gets down to your own preferences and perhaps budget. It's free ... good enough reason for me. I'm Always interested to hear of alternatives though. lipska -- Lipska the Kat: Troll hunter, sandbox destroyer and farscape dreamer of Aeryn Sun

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ANN: dbf.py 0.94
by Ethan Furman Aug. 3, 2012

Aug. 3, 2012

Getting closer to a stable release. Latest version has a simpler, cleaner API, and works on PyPy (and hopefully the other implementations as well ;), as well as CPython. Get your copy at http://python.org/pypi/dbf. Bug reports, comments, and kudos welcome! ;) ~Ethan~

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