def METHOD_NAME():
    p = datasets.PyCMDS.wm_w2_w1_000
    data = wt.data.from_PyCMDS(p)
    chop = data.chop("w2")
    assert len(chop) == 385
    for d in chop.values():
        assert d.w2.size == 11
        assert d.axis_expressions == ("w2",)
    data.close()
    chop.close()