rgr. On Nov 1, 2010, at 5:21 PM, tutor-requ...@python.org wrote: > Send Tutor mailing list submissions to > tutor@python.org > > To subscribe or unsubscribe via the World Wide Web, visit > http://mail.python.org/mailman/listinfo/tutor > or, via email, send a message with subject or body 'help' to > tutor-requ...@python.org > > You can reach the person managing the list at > tutor-ow...@python.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Tutor digest..." > > > Today's Topics: > > 1. Re: scope, visibility? (Dave Angel) > 2. Re: scope, visibility? (Evert Rol) > 3. Re: Problems with partial string matching (Josep M. Fontana) > 4. Complete Shutdown (Chris King) > 5. rights (Chris King) > 6. Re: rights (Vince Spicer) > 7. Re: Complete Shutdown (Alan Gauld) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Mon, 01 Nov 2010 14:14:33 -0400 > From: Dave Angel <da...@ieee.org> > To: Samuel de Champlain <samueldechampl...@gmail.com> > Cc: tutor@python.org > Subject: Re: [Tutor] scope, visibility? > Message-ID: <4ccf0389.10...@ieee.org> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > On 2:59 PM, Samuel de Champlain wrote: >> I am learning python. To practice, I am coding a hangman application in >> pyGTK. >> Here are my imports: >> >> import pygtk >> pygtk.require('2.0') >> import gtk >> import random >> >> Here is my main class: >> >> class PenduGTK: >> >> Inside the class is a method with a bit of code: >> >> def masque(chaine,liInd=0): >> >> i = 0 >> lenght = len(chaine) >> >> The offending line is the one with len(chaine) >> >> Here are the error messages: >> >> penduGTK.py >> Traceback (most recent call last): >> File "/home/xxx/bin/penduGTK.py", line 23, in enter_callback >> self.lblMot.set_text(self.masque(self.motChoisi)) >> File "/home/xxx/bin/penduGTK.py", line 44, in masque >> lenght = len(chaine) >> AttributeError: PenduGTK instance has no attribute '__len__' >> >> I would think it has to do with namespaces, scopes and visibility. But how >> do I refer to built-in functions from inside a class? >> > You're correctly referring to the built-in function len(). But that > function assumes that the object it gets as an argument has a __len__() > method. List, string, tuple all do. But perhaps PenduGTK does not. > You don't show us the whole class. > > Your real problem is probably that you're missing self as the first > argument. So where you think chaine is a string, it's actually an instance. > > DaveA > > > > ------------------------------ > > Message: 2 > Date: Mon, 1 Nov 2010 19:15:49 +0100 > From: Evert Rol <evert....@gmail.com> > To: Samuel de Champlain <samueldechampl...@gmail.com> > Cc: tutor@python.org > Subject: Re: [Tutor] scope, visibility? > Message-ID: <054046ec-cc0e-48b4-a85e-083fce7ee...@gmail.com> > Content-Type: text/plain; charset=us-ascii > >> Here is my main class: >> >> class PenduGTK: >> >> Inside the class is a method with a bit of code: >> >> def masque(chaine,liInd=0): >> >> i = 0 >> lenght = len(chaine) >> >> The offending line is the one with len(chaine) >> >> Here are the error messages: >> >> penduGTK.py >> Traceback (most recent call last): >> File "/home/xxx/bin/penduGTK.py", line 23, in enter_callback >> self.lblMot.set_text(self.masque(self.motChoisi)) >> File "/home/xxx/bin/penduGTK.py", line 44, in masque >> lenght = len(chaine) >> AttributeError: PenduGTK instance has no attribute '__len__' > > A method takes as its first argument a reference to the class. That is, in > 'def some_method(blah1, blah2, blah3)', blah1 would be a reference to the > class in which some_method is defined. > If you look at the error message, you see Python complains that the PenduGTK > instance has no __len__ attribute, meaning 'chaine' is a PenduGTK instance: > it's the first argument in the method, taking a reference to the class. > See eg > http://diveintopython.org/object_oriented_framework/defining_classes.html > (also, carefully read the error and think what it could mean: it has a lot of > hints to solve your problem). > > Thus, define a method with an extra (first) argument. This is usually called > self: > > def masque(self, chaine, liInd=0): > > > Last note on a totally different thing, because this confused me a bit: > preferably avoid avoid the lowercase L, lowercase i and uppercase I next to > each other. It's very hard to read. See eg > http://www.python.org/dev/peps/pep-0008/ (section 'Names to Avoid'). To me, > it initially read something like iiind=0. Which is ok, as long as I don't > have to work with the code. But it may also bite you some day. > > >> I would think it has to do with namespaces, scopes and visibility. But how >> do I refer to built-in functions from inside a class? > > Just as you did above: len(chaine). > But since that wasn't your problem, I guess this answer is rather meaningless. > > Cheers, > > Evert > > > > ------------------------------ > > Message: 3 > Date: Mon, 1 Nov 2010 20:38:06 +0100 > From: "Josep M. Fontana" <josep.m.font...@gmail.com> > To: Dave Angel <da...@ieee.org> > Cc: tutor@python.org > Subject: Re: [Tutor] Problems with partial string matching > Message-ID: > <aanlkti=rqjguu1nmh6+dt0gtkuhr6drsto2nr42cx...@mail.gmail.com> > Content-Type: text/plain; charset=ISO-8859-1 > >> The only time year is bound is in the previous loop, as I said. ?It's the >> line that goes: >> ? ? name, year = line.strip..... >> >> So year is whatever it was the last time through that loop. > > OK, this makes sense. Indeed that is the value in the last entry for > the dictionary. Thanks a lot again. > > Josep M. > > > ------------------------------ > > Message: 4 > Date: Mon, 01 Nov 2010 16:01:39 -0400 > From: Chris King <g.nius...@gmail.com> > To: python mail list <tutor@python.org> > Subject: [Tutor] Complete Shutdown > Message-ID: <4ccf1ca3.3050...@gmail.com> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > Dear Tutors, > How do I completely shutdown a computer without administrative > rights using a simple python script. > Sincerely, > Me, Myself, and I > > > ------------------------------ > > Message: 5 > Date: Mon, 01 Nov 2010 16:05:57 -0400 > From: Chris King <g.nius...@gmail.com> > To: python mail list <tutor@python.org> > Subject: [Tutor] rights > Message-ID: <4ccf1da5.2020...@gmail.com> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > Dear Tutors, > How do you give a script right to read a folder? > > > ------------------------------ > > Message: 6 > Date: Mon, 1 Nov 2010 14:10:43 -0600 > From: Vince Spicer <vi...@vinces.ca> > To: Chris King <g.nius...@gmail.com> > Cc: python mail list <tutor@python.org> > Subject: Re: [Tutor] rights > Message-ID: > <aanlktimq_a5ontwy7ykf_nuwy0_iunkvh9qro-msh...@mail.gmail.com> > Content-Type: text/plain; charset="iso-8859-1" > > On Mon, Nov 1, 2010 at 2:05 PM, Chris King <g.nius...@gmail.com> wrote: > >> Dear Tutors, >> How do you give a script right to read a folder? >> _______________________________________________ >> Tutor maillist - Tutor@python.org >> To unsubscribe or change subscription options: >> http://mail.python.org/mailman/listinfo/tutor >> > > > Which Operation System? > > In linux the user that is running the script must be have read access > > chmod +r folder > > > -- > Vince Spicer > > -- > Sent from Ubuntu > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > <http://mail.python.org/pipermail/tutor/attachments/20101101/61ad9dd4/attachment-0001.html> > > ------------------------------ > > Message: 7 > Date: Mon, 1 Nov 2010 21:20:42 -0000 > From: "Alan Gauld" <alan.ga...@btinternet.com> > To: tutor@python.org > Subject: Re: [Tutor] Complete Shutdown > Message-ID: <ianavd$os...@dough.gmane.org> > Content-Type: text/plain; format=flowed; charset="iso-8859-1"; > reply-type=response > > > "Chris King" <g.nius...@gmail.com> wrote > >> How do I completely shutdown a computer without administrative >> rights using a simple python script. > > If you have such a computer get rid of it, it fails the most basic > test > of a secure operating system. No program that runs upon it could > ever be relied upon! > > The whole concept is evil. > > Administrator rights are required for good reason and are a protection > against bad things happening to your data and programs. Work with > it not against it and be grateful it's there. > > > -- > Alan Gauld > Author of the Learn to Program web site > http://www.alan-g.me.uk/ > > > > > ------------------------------ > > _______________________________________________ > Tutor maillist - Tutor@python.org > http://mail.python.org/mailman/listinfo/tutor > > > End of Tutor Digest, Vol 81, Issue 3 > ************************************
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