code: def packed_dtype():
      return np.dtype(
          [
              ("bool_", "?"),
              ("uint_", "u4"),
              ("float_", "f4"),
              ("ldbl_", "g"),
          ]
      )
  
imports: import re
  import pytest
  import env
  from pybind11_tests import numpy_dtypes
label_desc: Use image node_id 2 for calling a global function with example usage: packed_dtype() and returns: np