code: def test__ne__():
      cs1 = CoordinateSystem("ijk")
      cs2 = CoordinateSystem("xyz")
      assert cs1 != cs2
      cs1 = CoordinateSystem("ijk", coord_dtype="float")
      cs2 = CoordinateSystem("ijk", coord_dtype="int")
      assert cs1 != cs2
  
imports: from types import SimpleNamespace
  import numpy
  import pytest
  from ..coordinate_system import CoordinateSystem, CoordinateSystemError, CoordSysMaker, CoordSysMakerError, is_coordsys, is_coordsys_maker, product, safe_dtype
label_desc: Use image node_id 9 for calling a global function with example usage: test__ne__() without return types