[Numpy-discussion] Array Protocol change for Python 2.6
strawman at astraw.com
Fri Jun 9 19:03:32 EDT 2006
Tim Hochberg wrote:
>Which of the following should we require for an object to be "supporting
>the array interface"? Here a producer is something that supplies
>array_struct or array_interface (where the latter is the Python level
>version of the former as per recent messages). Consumers do something
>with the results.
> 1. Producers can supply either array_struct (if implemented in C) or
> array_interface (if implemented in Python). Consumers must accept
> 2. Producers must supply both array_struct and array_interface.
> Consumers may accept either.
> 3. Producers most supply both array_struct and array_interface.
> Consumers must accept both as well.
I haven't been following as closely as I could, but is the following a
4. Producers can supply either array_struct or array_interface.
Consumers may accept either. The intermediate is a small, standalone
(does not depend on NumPy) extension module that does automatic
translation if necessary by provides 2 functions: as_array_struct()
(which returns a CObject) and as_array_interface() (which returns a
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