[Numpy-discussion] Deprecate unused but exposed C-API functions
Charles R Harris
charlesr.harris at gmail.com
Fri Jan 24 19:56:43 EST 2020
On Fri, Jan 24, 2020 at 11:29 AM Sebastian Berg <sebastian at sipsolutions.net>
> Hi all,
> I would like to deprecate three C-API functions (more may come later)
> in https://github.com/numpy/numpy/pull/15427
> The functions are:
> * PyArray_GetArrayParamsFromObject
> * PyUfunc_GenericCall
> * PyUFunc_SetUsesArraysAsData
> I could not find downstream usage for any of these and they seem useful
> only on first glance to me.
> The first one is too complex (regarding scalars), simply converting to
> an array first should be just as well.
> The second one is almost identical to `PyObject_Call`. And the third
> one is not even documented and while the idea is sound, I am not sure
> that there are any cases where it is useful 
> My idea is to add the deprecation warning now, and if nobody notices it
> remove them as soon as 1.19 is released.
I don't think C-API functions should be removed. Deprecation is fine, but
removal changes the customary order of the functions. If they cost nothing
to maintain, just leave them alone with a note/documentation that there are
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