[Python-3000] Reminder: Py3k PEPs due by April

Guido van Rossum guido at python.org
Tue Apr 10 20:53:27 CEST 2007

On 4/10/07, Raymond Hettinger <python at rcn.com> wrote:
> Thanks for the reminder.  I expect to write two:
> * PEP to eliminate __del__ in favor of weakref idioms
> * PEP on simpler alternative to abstract-base-classes
> suggesting an occasional method special attribute
> (so for instance a __getitem__ method can tell you
> whether it thinks it is a sequence or mapping).
> Here's that I think might not need a PEP:
> * Eliminate implicit string concatenation:   "abc" "def"
> in favor of an explicit + operation.  That simplifies
> the grammar just a bit and the compiler already is
> smart enough to do constant fold this operation at
> compile time.  When there are multi-line concats, I think
> the parenthesis serves us much better than a trailing \
> which is ugly and relies on having no trailing whitespace.
> Replace:
>    'hello         ' \
>    'world         '
> With:
>    ('hello        ' +
>     'world        ')

That needs a PEP too; there are subtle issues like

   ('hello %s'
    'world' % 42)

--Guido van Rossum (home page: http://www.python.org/~guido/)

More information about the Python-3000 mailing list