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

Re: advice about `correct' use of decorator
by Gregor Horvath Sept. 3, 2007

Sept. 3, 2007

Gerardo Herzig schrieb: > > @is_logued_in > def change_pass(): > bla > bla > > And so on for all the other functions who needs that the user is still > loged in. > > where obviosly the is_logued_in() function will determine if the dude is > still loged in, and THEN execute change_pass(). If the dude is not loged > in, change_pass() is NOT executed at all. Instead, it will be redirected > to the `login' screen. > > Something in my mind tells me that this is not the pythonic way...But i > like the idea, so please tell me that im in the right way :) > That's how turbogears does it. See: http://docs.turbogears.org/1.0/UsingIdentity?highlight=%28identity%29 Greg

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Urgently Required SAP CO-COPA Functional Lead
by HR Head Sept. 3, 2007

Sept. 3, 2007

We urgently require following skill set for singapore client SAP CO-COPA Functional Lead: Person with a strong Costing background. Should have hands on SAP "COPA" experience Minimum two implementations in Controling based Profitability Analysis (COPA) and Product Costing (COPC) in the SAP COPA skill set. Project Asset and Project costing Must have 5+ years of SAP experience Should be capable of handling Blueprinting and be a good Communicator. O Base location: Al Khobar, KSA ( near Dhaharan) As the spec suggest, we are looking at predominantly a Costing person. He should have at least 2 implementation experience on costing preferably Project Asset, + Profitability Analysis and Product costing. A muslim candidate would be ideal, but this is not mandatory. Pakistani / Indonesian and Malay apart from Indians will be a good bet. O Duration: 15 months O Rate: US$ 7500 per month (housing included) + medical insurance + Air travel Please feel free to refer your friends for same cv's to be send to isoft_staff(a)yahoo.com

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Re: advice about `correct' use of decorator
by Gabriel Genellina Sept. 3, 2007

Sept. 3, 2007

On 22 ago, 10:00, "BJ�rn Lindqvist" <bjou...(a)gmail.com> wrote: > On 8/17/07, Gerardo Herzig <gher...(a)fmed.uba.ar> wrote: > > > BJ�rn Lindqvist wrote: > > >def is_logued_in(): > > > if not user.is_logged_in(): > > > raise NotLoggedInError > > > >It costs you one more line, but reduces complexity. And if you are > > >worried about that extra line you can put it in a function. > > > As far as i know (by the way, AFAK is the shortcut?, and BTW means `by > > the way'? ), decorators are not indispensable. I mean, all that you can > > do with python, you can doit without decorators. And from my point of > > view, this hides the complexity for the other developers of my group, > > hiding is not the same thing as reducing. By hiding the code behind a > decorator, you are increasing the complexity by adding another layer > that the programmer has to look through to see your control flow. > > > since all they have to do is add the @is_logged_in line at the top of > > the cgi script, and not to worrie about exceptions, not even how the > > decorator is implemented (i may log the error in some file). All they > > have to know is that any abnormal situation will redirect to the `login' > > screen. > > As I said, you can accomplish the exact same thing by calling a > function from within the function that requires the user to be logged > in. > > def change_pass(): > check_user_logged_in() > ... more stuff here... > > is less complex (and therefore preferable) than: > > @check_user_logged_in > def change_pass(): > ... more stuff here... > > An important principle in engineering is that you should always strive > to make your design as simple as possible. If you have two equal > designs, you should always choose the one that is simpler because > simple things are easier to understand than complex things. I don't see the complexity in this case - both are a single line of code. Any internal complexity is hidden by the language. In fact, I consider the decorated function simpler than the other: its body represents exactly what the function does, without any distracting precondition calls. The decorator has some advantages: can have syntax support on your editor, can perform some registering/logging, it's even easier to quickly check visually if it's here. -- Gabriel Genellina

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Will Python 3.0 remove the global interpreter lock (GIL)
by llothar Sept. 3, 2007

Sept. 3, 2007

I'm afraid that the GIL is killing the usefullness of python for some types of applications now where 4,8 oder 64 threads on a chip are here or comming soon. What is the status about that for the future of python? I know that at the moment allmost nobody in the scripting world has solved this problem, but it bites and it bites hard. Only groovy as a Java Plugin has support but i never tried it. Writing an interpreter that does MT this seems to be extremely difficult to do it right, with lots of advanced stuff like CAS and lock free programming. Even Smalltalk and Common Lisp didn't get it until know (with the exception of certain experiments).

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Re: TypeError: 'module object is not callable'
by Bruno Desthuilliers Sept. 3, 2007

Sept. 3, 2007

Amit Khemka a écrit : (snip) > The exception is being raised as you are being confused about the > names ie: you have a class named "Step" in a module named "Step.py" . <nitpicking> Actually, the module is named 'Step', not 'Setp.py' !-) </nitpicking>

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The Texas Python Unconference is Almost Here!
by Jeff Rush Sept. 3, 2007

Sept. 3, 2007

The first regional Python unconference is coming to Houston on September 15-16 (Sat-Sun). Being held at the Texas Learning & Computing Center on the University of Houston main campus, this is a FREE event for Pythoneers from all over the Texas region. http://pycamp.python.org/Texas/ And being an unconference, participation by those who attend is welcome and greatly sought. The topics to be presented are purely up to the attendees. Details about the facility and a sign-up registration list is available on the wiki. Please add your name if you think you might attend, so that we can have some estimate of who is coming. Also add to the wiki topics on which you are coming prepared to present, or that you would like to see. Often people can present on many topics but don't know what others are interested in. And a big thanks go out to Robin Friedrich and those in Houston for hosting us. Let's roll up our sleeves and help them out! Involvement is key to making an unconference successful. For those not familiar with unconferences, check out this description: http://en.wikipedia.org/wiki/Unconference See you all there... Jeff Rush Python Advocacy Coordinator P.S. Please repost this to other Texas Python organizations.

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Weird gcc errors while installing "MySQL-python" module
by Jonas Schneider Sept. 3, 2007

Sept. 3, 2007

Hi guys, I´m experiencing weird error messages while installing MySQL-python with easy_install... I have no idea where the errors come from. Read the whole output at http://pastebin.com/m3859cf40 It´s really a lot... Someone got ideas? Greets Jonas

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TypeError: 'module object is not callable'
by christophertidy＠hotmail.com Sept. 3, 2007

Sept. 3, 2007

Hi I am new to Python and have recieved this error message when trying to instantiate an object from a class from another file within the same directory and wondered what I have done wrong. I have a Step.py class: class Step(object) def __init__(self, sName): "Initialise a new Step instance" self.sName = sName self.depSteps = [] self.remDepSteps = [] self.isCompleted = 0 Then I have created a new file within the same directory called main.py: import Step a = Step("magn") The following however generates the error Traceback (most recent call last): File "main.py", line 3, in ? a = Step("magn") TypeError: 'module' object is not callable If anyone could help point me in the right direction, how to fix this problem it would be much appreciated. Chris

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Re: ShowMeDo.com Announces Winner of Most-Video-Plays of the Month
by Diez B. Roggisch Sept. 3, 2007

Sept. 3, 2007

Jeff Rush wrote: > ShowMeDo.com, a website offering over 361 instructional screencasts about > topics both Python and non-Python, has announced their first winner of the > month for the most-played video. And the winner is: > > "Learn Django: Create a Wiki in 20 minutes" > > by Siddharta Govindaraj, founder of Silver Stripe Software, with 1851 > views in > August, far outpacing the second-place entry. The prize is a £20 (UK) > voucher > to Amazon. Congratulations, Siddhi! You can watch it at: > > http://showmedo.com/videos/video?name=1100000&fromSeriesID=110 > > Siddhi is also helping Doug Napoleone with PyCon this year, providing a > program for generating attendee badges and working to integrate it into > the Django-based conference site. > > You can find Siddhi at: > > http://siddhi.blogspot.com/ > http://www.silverstripesoftware.com/ > > So who will win this month? It could be you! How about a screencast > showcasing a different web framework like TurboGears or Twisted Web? Or > something about databases, either relational or object. Great work. I just have one small remark: given the increasing amount of spam in the NG/ML that reads "go bla.com to learn everything about ...", I was at first convinced that your post was one amongst these. Maybe a subject line that shows somewhat more python context would be a good idea? Just a suggestion. Diez

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Soemthing wrong w/ urllib module or something.
by Lamonte Harris Sept. 3, 2007

Sept. 3, 2007

Error Message in cmd: Traceback (most recent call last): File "wniamp_lastest5_playlist.py", line 25, in <module> response = urllib2.urlopen(request) File "C:\Python25\lib\urllib2.py", line 121, in urlopen return _opener.open(url, data) File "C:\Python25\lib\urllib2.py", line 374, in open response = self._open(req, data) File "C:\Python25\lib\urllib2.py", line 392, in _open '_open', req) File "C:\Python25\lib\urllib2.py", line 353, in _call_chain result = func(*args) File "C:\Python25\lib\urllib2.py", line 1100, in http_open return self.do_open(httplib.HTTPConnection, req) File "C:\Python25\lib\urllib2.py", line 1075, in do_open raise URLError(err) urllib2.URLError: <urlopen error (10053, 'Software caused connection abort')> My script that works almost perfectly cept when trying to post: import urllib,urllib2 from winamp import * import winamp domain = "http://DOMAINHERE/save_play.php" w = winamp.winamp() w.dumpList() List = getTrackList(r"c:\Program Files\Winamp\winamp.m3u") fList = fixTrackList(List) x=0 playlist = [] while x < 6: if x < (len(fList)-1) or x == (len(fList)-1): if fList[x] != "": e = "%d.%s" % (x,fList[x]) playlist.append(e) else: pass else: pass x = x + 1 ME = "|".join(playlist) send = {'playlist':ME} data = urllib.urlencode(send) request = urllib2.Request(domain,data) response = urllib2.urlopen(request) PL = response.read() if PL == "updated": print "Updated Successful." raw_input("Press anything to close") For some reason its not acting right when trying to run. I get that error message and I never seen anything like it.

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