Re: closure = decorator?
In article <5257c3dd$0$29984$c3e8da3$54964...@news.astraweb.com>, Steven D'Aprano wrote: > On Fri, 11 Oct 2013 10:14:29 +0300, Jussi Piitulainen wrote: > > > Roy Smith writes: > >> In article , > >> Piet van Oostrum wrote: > >> > >> > I usually say that a closure is a package, containing a function with > >> > some additional data it needs. The data usually is in the form of > >> > name bindings. > >> > >> That's pretty close to the way I think about it. The way it was > >> originally described to me is, "A closure is a function bundled up with > >> it's arguments". > > > > Really? It should be more like "a function bundled up with some other > > function's arguments" and even more like "a function bundled up with > > bindings for its free variables". > > Closures have nothing to do with *arguments*. A better definition of a > closure is that it is a function together with a snapshot of the > environment it was called from. > > def func(arg): > y = arg + 1 > def inner(): > return y + 1000 > return inner > > f = func(1) Maybe a better example of closure would be (just for the nonlocal) : def fib() : (a,b) = (0,1) def producer() : nonlocal a,b # Python 3 old = a (a,b) = (b,a+b) return old return producer >>> f = fib() >>> [f() for i in range(10)] [0, 1, 1, 2, 3, 5, 8, 13, 21, 34] > At this point, f is a closure. It needs to know the value of y (not the > argument to func) in order to work, and the implementation is to store > that information inside f.func_closure (or f.__closure__ in Python 3). > The part of the calling environment which is saved is y Shouldn't it be the (a,b) pair here ? But : >>> f.__closure__[0].cell_contents# access to what ? 55 Shouldn't cell_contents keep the current (a,b) pair, a part of the snapshot of the creation environment (private variables of the closure) ? Instead it seems to returns only a (which is the next production)... franck -- https://mail.python.org/mailman/listinfo/python-list
Re: Functional Programming and python
In article , rusi wrote: > Combining your two questions -- Recently: > What minimum should a person know before saying "I know Python" > > And earlier this > On Sunday, August 4, 2013 10:00:35 PM UTC+5:30, Aseem Bansal wrote: > > If there is an issue in place for improving the lambda forms then that's > > good. I wanted a link about functional programming because it is mentioned > > as > > if it were a household word. > > Python is not a functional programming language; however it supports most of > FP better than traditional languages like C/Java. > eg with iterators/generators + itertools + functools you can do most of what > lazy lists give in haskell > > Some discussion here: > http://stackoverflow.com/questions/1017621/why-isnt-python-very-good-for-functional-programming > > [Not everything said there is correct; eg python supports currying better > than haskell which is surprising considering that Haskell's surname is Curry!] > > So if I may break your question into two: > 1. Why should a programmer of a non-FP language know FP? > 2. What in FP should a (any|all) programmer know? > > I touched upon these in two blog-posts: > 1. http://blog.languager.org/2013/06/functional-programming-invades.html > 2. http://blog.languager.org/2012/10/functional-programming-lost-booty.html > > Also most programmers without an FP background have a poor appreciation of > the centrality of recursion in CS; see > http://blog.languager.org/2012/05/recursion-pervasive-in-cs.html Good approach of FP in Python, but two points make me crazy : 1. Tail recursion is not optimized. We are in 2013, why ? This is known technology (since 1960). And don't answer with "good programmers don't use recursion", this is bullshit. 2. Lambda-expression body is limited to one expression. Why ? Why the hell those limitations ? In this aspect, Javascript has a cooler approach. franck -- https://mail.python.org/mailman/listinfo/python-list
Python toplevel in a Web page
Hello, I wonder if I can find some source code example of a Python 3 toplevel box in a Web page. Something simple, no mySQL, no Django hammer, etc. Just the basics of the technology to get the content of a small text editor in which the user writes some Python script, to be analyzed (eval'ed) then whose result is to be written in another text box. Simple, pythonistic. Thanks for the pointer, franck -- http://mail.python.org/mailman/listinfo/python-list
Re: ANN: Python training "text movies"
In article , Mitya Sirenef wrote: > > - To use the software outside Python, we need to have proper indentation > > as real spaces. We should be able to distinguish Arial type for usual > > text and fixed font for code. > > > Not sure I understand about indentation.. You mean like wrapping > everything in a textarea tag? Right now everything is in div, > which leads to all spaces being compressed in html when viewed. SOme spaces are translated in , others in actual spaces. Say for Scheme, if I write this in foo.txt : > (define z (* 3+2i 1+i)) ; notation a+bi abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz I get this in foo.html (spaces missing) : > (define z (* 3+2i 1+i)) ; notation a+bi abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz franck -- http://mail.python.org/mailman/listinfo/python-list
Re: ANN: Python training "text movies"
Ok I can make my way with jstmovie. Some remarks and questions : - Use encoding='utf-8' inside open of method __init__ of class Tutorial in jstmovie.py. Otherwise foreign languages are stuck. - To use the software outside Python, we need to have proper indentation as real spaces. We should be able to distinguish Arial type for usual text and fixed font for code. - Should have some colors. Wadda wadda yadda # blue annotation Cool and useful software, franck -- http://mail.python.org/mailman/listinfo/python-list
Re: ANN: Python training "text movies"
In article , Franck Ditter wrote: > In article , > Franck Ditter wrote: > > > In article , > > Mitya Sirenef wrote: > > > > > On 01/19/2013 04:32 AM, Franck Ditter wrote: > > > > In article , > > > > Mitya Sirenef wrote: > > > > > > > >> On 01/14/2013 01:34 AM, Franck Ditter wrote: > > > >>> In article , > > > >>>Jason Friedman wrote: > > > >>> > > > >>>>> That is right; I would also add that it may be overwhelming for a > > > >>>>> newbie > > > >>>>> to be reading through a large "wall of text" -- here you have blank > > > >>>>> space after the current paragraph so the attention is focused even > > > >>>>> more > > > >>>>> on the last few lines. > > > >>>>> > > > >>>>> Additionally, since instructions scroll automatically, I can space > > > >>>>> them > > > >>>>> out more than you would conventionally do in a manual. > > > >>>>> > > > >>>> Pretty cool. > > > >>> When reading the source of the Web page which shows the scroll, > > > >>> I can't find the reference to the text displayed. Only "text"... > > > >>> How may we use the software which generates the Javascript ? > > > >>> Thanks, it's cool. > > > >>> > > > >>> franck > > > >> Thanks! > > > >> > > > >>the text is in var commands = ... > > > >> > > > >> You can download the generator script here: > > > >> > > > >> https://github.com/pythonbyexample/PBE/blob/master/code/jstmovie.py > > > >> > > > >> (you also need to grab tmovies dir) > > > > When looking at the source of the page : > > > > http://lightbird.net/larks/tmovies/strings.html > > > > I find commands = [] > > > > I can't guess where the strings displayed come from... > > > > > > > > franck > > > > > > Look 10 lines below that line. > > > > > > > > > I have also added a related page that allows you to paste your own > > > text to make a movie; it's linked from the same page with the > > > list of generated t-movies. > > > > > > (that page does not let you use typewriter effect or custom pauses > > > though). > > > > > > - mitya > > > > I'm probably blind but 10 line after the line "commands = []", I find : > > > > var commands = [ > > [ > > "text", > > " " > > ], > > [ > > "text", > > " " > > ], > > ] > > > > but nothing concrete ! How come ? > > > > franck > > OK OK found ! Thanks. > >franck When executing jstmovie.py, it complains : 'template.html' not found in tmovies... franck tmovies/template.html -- http://mail.python.org/mailman/listinfo/python-list
Re: ANN: Python training "text movies"
In article , Franck Ditter wrote: > In article , > Mitya Sirenef wrote: > > > On 01/19/2013 04:32 AM, Franck Ditter wrote: > > > In article , > > > Mitya Sirenef wrote: > > > > > >> On 01/14/2013 01:34 AM, Franck Ditter wrote: > > >>> In article , > > >>>Jason Friedman wrote: > > >>> > > >>>>> That is right; I would also add that it may be overwhelming for a > > >>>>> newbie > > >>>>> to be reading through a large "wall of text" -- here you have blank > > >>>>> space after the current paragraph so the attention is focused even > > >>>>> more > > >>>>> on the last few lines. > > >>>>> > > >>>>> Additionally, since instructions scroll automatically, I can space > > >>>>> them > > >>>>> out more than you would conventionally do in a manual. > > >>>>> > > >>>> Pretty cool. > > >>> When reading the source of the Web page which shows the scroll, > > >>> I can't find the reference to the text displayed. Only "text"... > > >>> How may we use the software which generates the Javascript ? > > >>> Thanks, it's cool. > > >>> > > >>> franck > > >> Thanks! > > >> > > >>the text is in var commands = ... > > >> > > >> You can download the generator script here: > > >> > > >> https://github.com/pythonbyexample/PBE/blob/master/code/jstmovie.py > > >> > > >> (you also need to grab tmovies dir) > > > When looking at the source of the page : > > > http://lightbird.net/larks/tmovies/strings.html > > > I find commands = [] > > > I can't guess where the strings displayed come from... > > > > > > franck > > > > Look 10 lines below that line. > > > > > > I have also added a related page that allows you to paste your own > > text to make a movie; it's linked from the same page with the > > list of generated t-movies. > > > > (that page does not let you use typewriter effect or custom pauses > > though). > > > > - mitya > > I'm probably blind but 10 line after the line "commands = []", I find : > > var commands = [ > [ > "text", > " " > ], > [ > "text", > " " > ], > ] > > but nothing concrete ! How come ? > > franck OK OK found ! Thanks. franck -- http://mail.python.org/mailman/listinfo/python-list
Re: ANN: Python training "text movies"
In article , Mitya Sirenef wrote: > On 01/19/2013 04:32 AM, Franck Ditter wrote: > > In article , > > Mitya Sirenef wrote: > > > >> On 01/14/2013 01:34 AM, Franck Ditter wrote: > >>> In article , > >>>Jason Friedman wrote: > >>> > >>>>> That is right; I would also add that it may be overwhelming for a newbie > >>>>> to be reading through a large "wall of text" -- here you have blank > >>>>> space after the current paragraph so the attention is focused even more > >>>>> on the last few lines. > >>>>> > >>>>> Additionally, since instructions scroll automatically, I can space them > >>>>> out more than you would conventionally do in a manual. > >>>>> > >>>> Pretty cool. > >>> When reading the source of the Web page which shows the scroll, > >>> I can't find the reference to the text displayed. Only "text"... > >>> How may we use the software which generates the Javascript ? > >>> Thanks, it's cool. > >>> > >>> franck > >> Thanks! > >> > >>the text is in var commands = ... > >> > >> You can download the generator script here: > >> > >> https://github.com/pythonbyexample/PBE/blob/master/code/jstmovie.py > >> > >> (you also need to grab tmovies dir) > > When looking at the source of the page : > > http://lightbird.net/larks/tmovies/strings.html > > I find commands = [] > > I can't guess where the strings displayed come from... > > > > franck > > Look 10 lines below that line. > > > I have also added a related page that allows you to paste your own > text to make a movie; it's linked from the same page with the > list of generated t-movies. > > (that page does not let you use typewriter effect or custom pauses > though). > > - mitya I'm probably blind but 10 line after the line "commands = []", I find : var commands = [ [ "text", " " ], [ "text", " " ], ] but nothing concrete ! How come ? franck -- http://mail.python.org/mailman/listinfo/python-list
Re: ANN: Python training "text movies"
In article , Mitya Sirenef wrote: > On 01/14/2013 01:34 AM, Franck Ditter wrote: > > In article , > > Jason Friedman wrote: > > > >>> That is right; I would also add that it may be overwhelming for a newbie > >>> to be reading through a large "wall of text" -- here you have blank > >>> space after the current paragraph so the attention is focused even more > >>> on the last few lines. > >>> > >>> Additionally, since instructions scroll automatically, I can space them > >>> out more than you would conventionally do in a manual. > >>> > >> Pretty cool. > > When reading the source of the Web page which shows the scroll, > > I can't find the reference to the text displayed. Only "text"... > > How may we use the software which generates the Javascript ? > > Thanks, it's cool. > > > > franck > > Thanks! > > the text is in var commands = ... > > You can download the generator script here: > > https://github.com/pythonbyexample/PBE/blob/master/code/jstmovie.py > > (you also need to grab tmovies dir) When looking at the source of the page : http://lightbird.net/larks/tmovies/strings.html I find commands = [] I can't guess where the strings displayed come from... franck -- http://mail.python.org/mailman/listinfo/python-list
Re: ANN: Python training "text movies"
In article , Jason Friedman wrote: > > That is right; I would also add that it may be overwhelming for a newbie > > to be reading through a large "wall of text" -- here you have blank > > space after the current paragraph so the attention is focused even more > > on the last few lines. > > > > Additionally, since instructions scroll automatically, I can space them > > out more than you would conventionally do in a manual. > > > > Pretty cool. When reading the source of the Web page which shows the scroll, I can't find the reference to the text displayed. Only "text"... How may we use the software which generates the Javascript ? Thanks, it's cool. franck -- http://mail.python.org/mailman/listinfo/python-list
Re: Problem with Unicode char in Python 3.3.0
In article ,
marduk wrote:
> On Sun, Jan 6, 2013, at 11:43 AM, Franck Ditter wrote:
> > Hi !
> > I work on MacOS-X Lion and IDLE/Python 3.3.0
> > I can't get the treble key (U1D11E) !
> >
> > >>> "\U1D11E"
> > SyntaxError: (unicode error) 'unicodeescape' codec can't
> > decode bytes in position 0-6: end of string in escape sequence
> >
>
> You probably meant:
>
> >>> '\U0001d11e'
>
>
> For that synax you must use either '\u' or '\U' (i.e.
> specify either 4 or 8 hex digits).
>
> http://docs.python.org/2/howto/unicode#unicode-literals-in-python-source-code
<<< print('\U0001d11e')
Traceback (most recent call last):
File "", line 1, in
print('\U0001d11e')
UnicodeEncodeError: 'UCS-2' codec can't encode character '\U0001d11e'
in position 0: Non-BMP character not supported in Tk
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Problem with Unicode char in Python 3.3.0
Hi ! I work on MacOS-X Lion and IDLE/Python 3.3.0 I can't get the treble key (U1D11E) ! >>> "\U1D11E" SyntaxError: (unicode error) 'unicodeescape' codec can't decode bytes in position 0-6: end of string in escape sequence How can I display musical keys ? Thanks, franck -- http://mail.python.org/mailman/listinfo/python-list
getting the state of an object
Hi ! Another question. When writing a class, I have often to destructure the state of an object as in : def foo(self) : (a,b,c,d) = (self.a,self.b,self.c,self.d) ... big code with a,b,c,d ... So I use the following method : def state(self) : return (self.a,self.b,self.c,self.d) so as to write : def foo(self) : (a,b,c,d) = self.state() ... big code with a,b,c,d ... This is probably not the best Python way to code, is it ? Is there a simple way to get the *ordered* list of instance variables as given in the parameter list of __init__ ? __dict__ gives it but not in order... Thanks a lot, franck -- http://mail.python.org/mailman/listinfo/python-list
question on log as an instance method
Hi ! Here is Python 3.2.3, MacOSX-Lion Question : I may consider + as an hidden instance method , as 1+2 is equivalent to (1).__add__(2) ? I also consider __abs__ as an instance method : >>> (-2).__abs__() 2 Question 1 : could the parser cope with the mandatory space in 1 .__add__(2) ? Question 2 : After importing math, why can't I consider log as an instance method, after all ? >>> (4).__log__() AttributeError: 'float' object has no attribute '__log__' Thanks for your answers. franck -- http://mail.python.org/mailman/listinfo/python-list
print or write on a text file ?
Hi ! Here is Python 3.3 Is it better in any way to use print(x,x,x,file='out') or out.write(x) ? Any reason to prefer any of them ? There should be a printlines, like readlines ? Thanks, franck -- http://mail.python.org/mailman/listinfo/python-list
Re: Reading a file in IDLE 3 on Mac-Lion
In article <505ccdc5$0$6919$e4fe5...@news2.news.xs4all.nl>, Hans Mulder wrote: > On 21/09/12 16:29:55, Franck Ditter wrote: > > I create a text file utf-8 encoded in Python 3 with IDLE (Mac Lion). > > It runs fine and creates the disk file, visible with > > TextWrangler or another. > > But I can't open it with IDLE (its name is greyed). > > IDLE is supposed to read utf-8 files, no ? > > This works on Windows-7. > > There's a little pop-menu below the list of files. > > It allows you to choose which kind of files you want to open. > By default, it is set to "Python files", which greys out all > files, except those with a '.py' or '.pyw' extension. > Setting it to "Text files" should help, or else try "All files". > > Hope this helps > > -- HansM Alas this pop-up menu is for Windows only, I don't find it on MacOS-X. My files are xxx.dat files and not visible, even text only (numeric data). This can be filed as something to do ! Thanks, franck -- http://mail.python.org/mailman/listinfo/python-list
Reading a file in IDLE 3 on Mac-Lion
Hello, I create a text file utf-8 encoded in Python 3 with IDLE (Mac Lion). It runs fine and creates the disk file, visible with TextWrangler or another. But I can't open it with IDLE (its name is greyed). IDLE is supposed to read utf-8 files, no ? This works on Windows-7. Thanks for the tip, franck -- http://mail.python.org/mailman/listinfo/python-list
sum works in sequences (Python 3)
Hello,
I wonder why sum does not work on the string sequence in Python 3 :
>>> sum((8,5,9,3))
25
>>> sum([5,8,3,9,2])
27
>>> sum('rtarze')
TypeError: unsupported operand type(s) for +: 'int' and 'str'
I naively thought that sum('abc') would expand to 'a'+'b'+'c'
And the error message is somewhat cryptic...
franck
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Re: is implemented with id ?
Thanks to all, but : - I should have said that I work with Python 3. Does that matter ? - May I reformulate the queston : "a is b" and "id(a) == id(b)" both mean : "a et b share the same physical address". Is that True ? Thanks, franck In article , Benjamin Kaplan wrote: > On Tue, Sep 4, 2012 at 11:30 PM, Franck Ditter wrote: > > Hi ! > > a is b <==> id(a) == id(b) in builtin classes. > > Is that true ? > > Thanks, > > > > franck > > No. It is true that if a is b then id(a) == id(b) but the reverse is > not necessarily true. id is only guaranteed to be unique among objects > alive at the same time. If objects are discarded, their ids may be > reused even though the objects are not the same. -- http://mail.python.org/mailman/listinfo/python-list
is implemented with id ?
Hi ! a is b <==> id(a) == id(b) in builtin classes. Is that true ? Thanks, franck -- http://mail.python.org/mailman/listinfo/python-list
How to program test(expr) ?
Hi !
I use Python 3.2.3 + Idle.
Is it possible to program test(e) which takes
an expression e and whose execution produces
at the toplevel an echo of e and the effects
and result of its evaluation ?
# file foo.py
def foo(x) :
print('x =',x)
return x+1
test(foo(5))
# RUN !
# produces at the toplevel :
? foo(5)
x = 5
--> 6
I know I could put the expression e within a string, but
is it possible to avoid the string, like a Lisp macro ?
Thanks.
franck
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when an iterable object is exhausted or not
Two similar iterable objects but with a different behavior : $$$ i = range(2,5) $$$ for x in i : print(x,end=' ') 2 3 4 $$$ for x in i : print(x,end=' ')# i is not exhausted 2 3 4 - Compare with : $$$ i = filter(lambda c : c.isdigit(), 'a1b2c3') $$$ for x in i : print(x,end=' ') 1 2 3 $$$ for x in i : print(x,end=' ')# i is exhausted $$$ IMHO, this should not happen in Py3k. What is the rationale of this (bad ?) design, which forces the programmer to memorize which one is exhaustable and which one is not ?... franck -- http://mail.python.org/mailman/listinfo/python-list
Re: lambda in list comprehension acting funny
In article , Daniel Fetchinson wrote: > > funcs = [ lambda x: x**i for i in range( 5 ) ] > > print funcs[0]( 2 ) > > print funcs[1]( 2 ) > > print funcs[2]( 2 ) > > > > This gives me > > > > 16 > > 16 > > 16 > > > > When I was excepting > > > > 1 > > 2 > > 4 > > > > Does anyone know why? In Python 3.x : funcs = [lambda x: x**i for i in range(5)] list(map(lambda f: f(2),funcs)) --> [16, 16, 16, 16, 16] Ooops, cool semantics :-) In Racket Scheme (http://racket-lang.org), they seem to know lambdas : #lang racket ;;; quick and dirty list comprehension syntax as a macro, for fun : (define-syntax-rule (list-of expr for x in L) (map (lambda (x) expr) L)) (list-of (sqr x) for x in (range 5)) --> (0 1 4 9 16) (define funcs (list-of (lambda (x) (expt x i)) for i in (range 5))) (map (lambda (f) (f 2)) funcs) --> (1 2 4 8 16) franck -- http://mail.python.org/mailman/listinfo/python-list
How to launch idle -n on windows ?
I have some problems with Python 3.2 on Windows. I want to use the turtle package, works fine, but I can't close the turtle windows. On MacOS-X, I launch idle -n and it's fine. How can I do that on Windows ? Thanks, fd -- http://mail.python.org/mailman/listinfo/python-list
Installing pygame on MacOS-X Lion with Python 3.3
I can't get it working : "No pygame module"... Tried without success : pygame-1.9.2pre-py2.7-macosx10.7.mpkg.zip pygame-1.9.1release-python.org-32bit-py2.7-macosx10.3.dmg I am using Python 3 last version on MacOS-X Lion. Where is a step-by-step installation procedure ? Thanks, franck -- http://mail.python.org/mailman/listinfo/python-list
Re: Question on Python 3 shell restarting
In article <19745339.1683.1333981625966.JavaMail.geo-discussion-forums@yncc41>, Miki Tebeka wrote: > > How may I get a fresh Python shell with Idle 3.2 ? > Open the configuration panel (Options -> Configure IDLE). > Look in the "Keys" tab for the shortcut to "restart-shell" Fine, thanks, but WHY isn't it in a menu (e.g. Debug) ? Moreover, I see : restart-shell - Hum, but when I press, Ctl-F6, nothing happens !!??!! F6 gives me char. (MacOS-X Lion, France, Idle 3.3.0a2) I tried to replace "restart-shell " with F6 (which does nothing except displaying a strange character inside a square), but that was refused "already in use"... franck P.S. There is no "configuration panel (Options -> Configure IDLE)", only a Preferences menu with a "Key" tab on MacOS-X. May I suggest to the Python Idle 3 team to test their software on a Mac ? Please :-) -- http://mail.python.org/mailman/listinfo/python-list
Question on Python 3 shell restarting
How may I get a fresh Python shell with Idle 3.2 ? I have to run the same modules several times with all variables cleared. Thanks, franck -- http://mail.python.org/mailman/listinfo/python-list
Re: Buffering in Wing and IDLE 3
In article , Ned Deily wrote: > http://www.activestate.com/activetcl/downloads GREAT ! It seems to work. At least, I can now get the ~ char in France from within IDLE. A big step for manking :-) Thanks folks, franck -- http://mail.python.org/mailman/listinfo/python-list
Complexity question on Python 3 lists
What is the cost of calling primes(n) below ? I'm mainly interested in knowing if the call to append is O(1), even amortized. Do lists in Python 3 behave like ArrayList in Java (if the capacity is full, then the array grows by more than 1 element) ? def sdiv(n) : # n >= 2 """returns the smallest (prime) divisor of n""" if n % 2 == 0 : return 2 for d in range(3,int(sqrt(n))+1,2) : if n % d == 0 : return d return n def isPrime(n) : """Returns True iff n is prime""" return n >= 2 and n == sdiv(n) def primes(n) : # n >= 2 """Returns the list of primes in [2,n]""" res = [] for k in range(2,n+1) : if isPrime(k) : res.append(k)# cost O(1) ? return res Thanks, franck -- http://mail.python.org/mailman/listinfo/python-list
Stopping a looping computation in IDLE 3.2.x
How do you stop a looping computation with IDLE 3.2.x on MacOS-X Lion ? It hangs with the colored wheel... Ctl-C does not work. Thanks, franck -- http://mail.python.org/mailman/listinfo/python-list
Buffering in Wing and IDLE 3
Hi, I'm using Python 3.2.x with beginners. If I try the following in IDLE 3, it works as expected : from time import sleep import sys for i in range(4) : sys.stdout.write(str(i)) sys.stdout.flush() sleep(1) but with Wing-101, it write 0123 after the total sleep time. Why ??? I would prefer to use IDLE but as we are in France, the Python team does not seem to be aware that the ~ and others are not available on MacOS-X here (probably the same in Europe)... franck -- http://mail.python.org/mailman/listinfo/python-list
Re: Can't get tilde character with IDLE 3.2.2 on French Mac Lion
Nope, "space" followed by "Shift-Option-N" gives a greek iota... I tried other combinations, unsuccessfully. IDLE 3 (French) seems to be unusable as we use many ~ in web applications :-( Should we hope a fix soon, or leave IDLE ? Thanks, franck In article , Ned Deily wrote: > In article , > Franck Ditter wrote: > > All is in the subject. I'm starting to use Python with Idle 3.2.2 > > on MacOS-X Lion (French). I can't get "Option-N space" to provide > > the ~ char. > > I tried to go into the Keys preferences but I can't find "Option-N space" > > to modify its meaning. Its actual behavior is to merge lines of a > > paragraph. > > You are likely running into a current problem in the OS X Cocoa version > of Tcl/Tk 8.5 as included with Lion and as shipped by ActiveState. > Previously, if you tried to type composite characters, like Option N, > the Cocoa Tcl/Tk would crash. Pending a real fix, a patch was made to > Tcl/Tk 8.5 to discard composite characters rather than crash. You > should be able to get a tilde by using the post-composite keyboard > sequence: try typing "space" followed by "Shift-Option-N". > > http://sourceforge.net/tracker/index.php?func=detail&aid=2907388&group_id=12997&atid=112997 -- http://mail.python.org/mailman/listinfo/python-list
Can't get tilde character with IDLE 3.2.2 on French Mac Lion
Hi ! All is in the subject. I'm starting to use Python with Idle 3.2.2 on MacOS-X Lion (French). I can't get "Option-N space" to provide the ~ char. I tried to go into the Keys preferences but I can't find "Option-N space" to modify its meaning. Its actual behavior is to merge lines of a paragraph. Thanks for help ! franck -- http://mail.python.org/mailman/listinfo/python-list
Re: PyPad 2.7.1 Update 4 (Python on iPad and iPhone)
Any Python 3 planned ? franck In article , AlienBaby wrote: > On Jun 23, 2:07 pm, Jon Dowdall > wrote: > > Hi All, > > > > I'm pleased to announce that PyPad (Python environment for iOS) 2.7.1 > > Update 4 is now available in the iTunes App Store. New in this version > > is the ability to create custom modules. Modules can be independent or > > can include other user modules to build larger frame works. > > > > Plans for future versions include: > > Improved cursor handling in interactive mode. > > Access to the interactive command history. > > Modules to access iOS specific functionality. > > Additional documentation. > > Syntax highlighting. > > Improved script debugging support. > > > > Regards, > > > > Jon > > Hi Jon, > > I would be interested in having a play with this. How is it restricted > when running in the iPad? > > thanks, > > Matt. -- http://mail.python.org/mailman/listinfo/python-list
Python and Lisp : car and cdr
Hi, I'm just wondering about the complexity of some Python operations to mimic Lisp car and cdr in Python... def length(L) : if not L : return 0 return 1 + length(L[1:]) Should I think of the slice L[1:] as (cdr L) ? I mean, is the slice a copy of a segment of L, or do I actually get a pointer to something inside L ? Is the above function length O(n) or probably O(n^2) ? Where are such implementation things (well) said ? Thanks, franck -- http://mail.python.org/mailman/listinfo/python-list
Python in CS1
Except at MIT, who knows some good CS1 references for teaching Python ? Thanks, franck -- http://mail.python.org/mailman/listinfo/python-list
Noob question on 2 vs 3 Python releases
Pardon my noobness (?) but why is there a 2.x and 3.x development teams working concurrently in Python ? I hardly saw that in other languages. Which one should I choose to start with, to cope with the future ? Isn't 3.x supposed to extend 2.y ? This situation is very strange... Thanks for your explanations... franck -- http://mail.python.org/mailman/listinfo/python-list
Re: [RELEASE] Python 2.7 release candidate 1 released
Just an advice as I see that "old" Python is maintained. When starting with Python (simple programs and GUIs) should I start with Python 3.x ? If it has a decent implementation on Mac/Linux/Windows of course... Thanks, franck -- http://mail.python.org/mailman/listinfo/python-list
