Sum Over the Last Two Axes

easynumpy_reductions

Implement sum_last_two(A).

Given an array A with at least 2 dimensions, return the array obtained by summing over its last two axes (result shape A.shape[:-2]). No for/while loops.

Constraints

no scipy, sklearn
no for/while loops

Your solution

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Hints

Hint 1

Pass a tuple of axes to sum: A.sum(axis=(-2, -1)).