code: def numpy_add(a, b):
      return np.add(a, b)
  
imports: import unittest
  import pytensor
  from pytensor.graph.basic import Apply
  from pytensor.graph.op import Op
  from pytensor.tensor.type import TensorType
  from tests import unittest_tools
  from pytensor import tensor
  from pytensor.graph.basic import Apply
  from pytensor.tensor.type import dmatrix, matrix
  import numpy
  import pytensor
  from pytensor.compile.ops import as_op
label_desc: Use image node_id 2 for calling a global function with example usage: numpy_add(a, b) and returns: np