def METHOD_NAME():
    p = datasets.PyCMDS.w2_w1_000
    data = wt.data.from_PyCMDS(p)
    chop = data.chop("w2")
    assert len(chop) == 81
    for d in chop.values():
        assert d.w2.size == 81
        assert d.axis_expressions == ("w2",)
        for k in data.variable_names:
            assert d[k].label == data[k].label
    data.close()
    chop.close()