[Python-ideas] Allow isinstance second argument to be a set of types

[Amaury Forgeot d'Arc]

Hi,

2011/7/4 Antoine Pitrou <solipsis at pitrou.net>:
> Le lundi 04 juillet 2011 à 10:52 -0700, Gregory P. Smith a écrit :
>> note that a fast lookup implies exact type and not subclass making my
>> point silly... at which point you're back to iterating so I suspect
>> supporting arbitrary iterables is actually how this will be
>> implemented regardless.
>
> Indeed. Note that the tuple case should remain fast, and therefore
> special-cased (or the general list/tuple case, since the difference in C
> is rather small).

Arbitrary iterables, arbitrarily nested...
beware of objects which are also their first element, like str('a')...

-- 
Amaury Forgeot d'Arc