[Python-ideas] PEP 484 (Type Hints) -- first draft round

[Greg Ewing]

> On 1/18/2015 10:40 PM, Guido van Rossum wrote:
> 
>  > Very few people subclass builtins.list ...
>  > So perhaps Cython could just assume that typing.List means
>  > builtins.list and (dynamically) reject calls that pass a subclass
>  > of builtins.list?

That's actually a reasonable idea. Anything that accepts
something as weird as a trianglular matrix implemented as
a list subclass will probably accept any kind of sequence,
so you might as well type it as Sequence (or whatever the
abstract sequence interface is to be called).

-- 
Greg