[Numpy-discussion] New behavior of allclose

Ralf Gommers ralf.gommers at gmail.com
Thu Nov 5 16:50:49 EST 2015

On Wed, Nov 4, 2015 at 8:28 PM, Charles R Harris <charlesr.harris at gmail.com>

> Hi All,
> This is to open a discussion of a change of behavior of `np.allclose`.
> That function uses `isclose` in numpy 1.10 with the result that array
> subtypes are preserved whereas before they were not. In particular, memmaps
> are returned when at least one of the inputs is a memmap. By and large I
> think this is a good thing, OTOH, it is a change in behavior. It is easy to
> fix, just run `np.array(result, copy=False)` on the current `result`, but I
> thought I'd raise the topic on the list in case there is a good argument to
> change things.

Why would it be good to return a memmap? And am I confused or does your
just merged PR [1] revert the behavior you say here is a good thing?


[1] https://github.com/numpy/numpy/pull/6628
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