[Python-Dev] PEP 318 - generality of list;
restrictions on elements
oussoren at cistron.nl
Wed Mar 10 11:54:44 EST 2004
On 10-mrt-04, at 17:30, Aahz wrote:
> On Wed, Mar 10, 2004, Guido van Rossum wrote:
>> In any case, *I* would prefer not to let the semantics require
>> anything, and to make this just a (preferred) shorthand for applying
>> arbitrary transformations to something that starts out as a function.
> All right, I've done my duty as the Loyal Opposition ;-), and I don't
> care enough to keep arguing.
> That still leaves the question for what *is* allowed within the
> brackets. AFAICT, the options are
> * A single identifier (which must be a callable)
Why not allow dotted name (foomod.modifier) as well?
> * Comma-separated list of identifiers (which must be callables)
* A comma-seperated list of expressions (which must produce callables)
> * Arbitrary expression (which must produce a sequence of callables)
This seems to allow def foo() ``[[x for x in sequence]]: pass`` which
is very odd.
> BTW, have we agreed on the order in which decorators will be applied?
> Aahz (aahz at pythoncraft.com) <*>
> "Do not taunt happy fun for loops. Do not change lists you are looping
> --Remco Gerlich, comp.lang.python
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