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

[Chris Barker]

On Sun, Jan 18, 2015 at 10:06 PM, Terry Reedy <tjreedy at udel.edu> wrote:

> Storing a triangular matrix in a list, with __getitem__ calculating the
> linear index from an input row, col pair, is another possible example.
>

well, I prefer do do this sort of thing with a "has a" relationship,
anyway, which would work better. Particularly if you are changing the API
of get_item....

So we may be OK.



> > 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?
>
> Identifying a triangular matrix as a List might not be too useful in any
> case.
>

exactly.

-Chris

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