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.)
> 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.
Stefan
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