On Tue, Oct 1, 2013 at 7:58 AM, Nathaniel Smith <n...@pobox.com> wrote:
> I bet the difference is: > > In master, nansum ultimately calls arr.sum(...), which will be > intercepted by Series.sum. > > In 1.8.x, nansum ultimately calls np.add.reduce(...), which can't be > intercepted and will return the wrong thing. > > AFAICT the np.add.reduce(a, ...) call could just be replaced with > a.sum(...), but I might be missing something... surely there must have > been some reason it was written that way in the first place? > No good reason, just a bit more efficient. The change for current master was because of the change in nansum behavior for empty slices. Changing the call to a.sum is not a problem, although I confess that it seems a bit fragile... <snip> Chuck
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