Alex Popescu wrote: > [EMAIL PROTECTED] (John J. Lee) wrote in news:[EMAIL PROTECTED]: > >> Alex Popescu <[EMAIL PROTECTED]> writes: >> >>> Zentrader <[EMAIL PROTECTED]> wrote in >>> news:1185041243.323915.161230 @x40g2000prg.googlegroups.com: >>> >>>> On Jul 21, 7:48 am, Duncan Booth <[EMAIL PROTECTED]> >>>> wrote: >>>> >>>> [snip...] >>>> >>>> >>>> >From the 2.6 PEP #361 (looks like dict.has_key is deprecated) >>>> Python 3.0 compatability: ['compatibility'-->someone should use a >>>> spell-checker for 'official' releases] >>>> - warnings were added for the following builtins which no >>>> longer exist in 3.0: >>>> apply, callable, coerce, dict.has_key, execfile, >>>> reduce, >>>> reload >>>> >>> I see... what that document doesn't describe is the alternatives to >>> be used. And I see in that list a couple of functions that are >>> probably used a lot nowadays (callable, reduce, etc.). >> callable and reduce are rarely used, at least in code I've seen. > > I thought G would be using that function a lot. Also, what is the > replacement of reduce? I think I remember seeing somewhere that lists > comprehension would be (but also remember the advise that reduce will be > quicker). > See his latest blog entry on artima.com, where he has started a Py3k FAQ. He suggests that uses if reduce are almost always more readable when written using a for loop and an accumulator variable.
http://www.artima.com/weblogs/viewpost.jsp?thread=211200 >> Certainly has_key will be >> the most common of those listed above (but trivial to fix). > > dict.has_key(key) becomes key in dict (correct?) > >> apply >> will be common in old code from the time of Python 1.5.2. > > I think there were some advises to not use apply. > Yup. Anyway there's a trivial translation for uses of apply. apply(f, *args, **kw) => f(*args, **kw) The converter will almost certainly do this for you. >> execfile is >> perhaps more common that callable (?) but again is really a "maybe 1 >> call in a big program" sort of thing. > I don't ever remember using execfile. It has always been a blot on the landscape. > What is the replacement for this one? > I'd have to guess, and will refrain from doing so. 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 ------------- -- http://mail.python.org/mailman/listinfo/python-list
