code: def test_numpy_dtype():
      test_type = ScalarType(np.int32)
      assert test_type.dtype == "int32"
  
imports: import numpy
  from pytensor.configdefaults import config
  from pytensor.scalar.basic import IntDiv, ScalarType, TrueDiv, complex64, float32, float64, int8, int32
label_desc: Use image node_id 1 for calling a global function with example usage: test_numpy_dtype() without return types