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# BSD 3-Clause License; see https://github.com/scikit-hep/awkward/blob/main/LICENSE
from __future__ import annotations
import numpy as np
import pytest # noqa: F401
import awkward as ak
def test():
small = ak.Array(
ak.contents.ListOffsetArray(
ak.index.Index64(np.array([0, 0, 2])),
ak.contents.ListOffsetArray(
ak.index.Index64(np.array([0, 2, 4])),
ak.contents.NumpyArray(np.array([1, 2, 3, 4], dtype=np.float32)),
),
)
)
reduced = ak.sum(small, axis=-2)
assert reduced.to_list() == [[], [4, 6]]
assert np.asarray(reduced.layout.starts).tolist() == [0, 2]
assert np.asarray(reduced.layout.stops).tolist() == [0, 4]
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