code: def __init__(self, ctx=None):
      super(Add2, self).__init__(ctx)
  
file_path: nnabla/python/test/test_python_function.py
imports: import pytest
  import numpy
  import nnabla.functions
  import nnabla
  from nnabla.function import PythonFunction
label_desc: Use image node_id 1 to create a new Add2 object from inherited base classes: PythonFunction with example: obj = Add2(ctx)