On 5 July 2010 12:34, Stefan Behnel <[email protected]> wrote: > Lisandro Dalcin, 05.07.2010 17:15: >> On 5 July 2010 11:32, Stefan Behnel wrote: >>> Py2.7 final gives me this: >>> >>> Python 2.7 (r27:82500, Jul 5 2010, 13:37:06) >>> [GCC 4.4.3] on linux2 >>> Type "help", "copyright", "credits" or "license" for more information. >>> >>> >>> {i for i in range(10)}; i >>> set([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]) >>> Traceback (most recent call last): >>> File "<stdin>", line 1, in<module> >>> NameError: name 'i' is not defined >>> >>> >>> {i:i for i in range(10)}; i >>> {0: 0, 1: 1, 2: 2, 3: 3, 4: 4, 5: 5, 6: 6, 7: 7, 8: 8, 9: 9} >>> Traceback (most recent call last): >>> File "<stdin>", line 1, in<module> >>> NameError: name 'i' is not defined >>> >>> List comprehensions have not changed: >>> >>> >>> [i for i in range(10)]; i >>> [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] >>> 9 >>> >>> I know, I have asked this more than once already, but I think this is >>> finally enough of a reason to fix the current behaviour also in Cython. >> >> No objections from my side. However, perhaps you would like to >> consider a compiler directive to enable this annoying thing? Ideally, >> by default, it should be enabled on *.py files and disabled on *.pyx >> files. > > What purpose would that serve? I think it's one way or the other. (And my > preference should be clear by now.) >
Just backward compatibility, in case Cython is asked to handle *.py files. > >> PS: We have to start in making Cython target Python 3, and provide >> support for Python 2 features on-demand, let say by using a compiler >> directive #python2: enable-something=True,use-this-semantics=True > > There are "-2" and "-3" options at the command line and a "language_level" > directive at the source level now. > OK. Good to know we have -2/-3. Then, what are you going to do under -2 for list comprehensions? -- Lisandro Dalcin --------------- CIMEC (INTEC/CONICET-UNL) Predio CONICET-Santa Fe Colectora RN 168 Km 472, Paraje El Pozo Tel: +54-342-4511594 (ext 1011) Tel/Fax: +54-342-4511169 _______________________________________________ Cython-dev mailing list [email protected] http://codespeak.net/mailman/listinfo/cython-dev
