On Wed, Sep 26, 2018 at 9:19 AM Joris Van den Bossche < jorisvandenboss...@gmail.com> wrote:
> Hi all, > > I have small question for clarification regarding some reducing numpy > functions like np.sum, np.mean, etc, i.e. functions that now work on > other array-like objects by checking if they have 'sum', 'mean', etc method > and if so, "dispatch" to the method. > Those functions are several times mentioned as examples in the text of the > NEP, so although the NEP does not list the functions that will use the > __array_function__ protocol explicitly, I assume that those functions > will probably be in that list. But I wanted to check if that assumption is > correct. > > Is it the intent that the functions that now dispatch to object methods > will be updated to use the protocol instead? (probably keeping to > method-dispatch as second try for backwards compatibility) > Hi Joris, Yes, this is my exact intent. Eventually, we might remove/deprecate automatically calling methods with the same name (due to how error prone this is), but that is a long way in the future if ever. Keep in mind that the current version of the NEP may not be a good fit for pandas, because it requires overriding *all* NumPy functions. See this section of the NEP for details: http://www.numpy.org/neps/nep-0018-array-function-protocol.html#coercion-to-a-numpy-array-as-a-catch-all-fallback Cheers, Stephan
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