Function getitem

test/test_utils.py:50–51

(i, j, a, b)

    a, b = nx.from_numpy(a, b)

    def getitem(i, j, a, b):
        return a[i, None] * b[None, j]

    # create a lazy tensor
    T = ot.utils.LazyTensor((n1, n2), getitem, a=a, b=b)