class_docstr: Operator base class, implements __init__ and __call__,
  
  Examples:
      class AddOperator(Operator):
          def __init__(self, factor: int):
              self._factor = factor
  
          def __call__(self, num)
              return self._factor + num
class_docstr_tok: ["Operator","base","class",",","implements","__init__","and","__call__",",","Examples",":","class","AddOperator","(","Operator",")",":","def","__init__","(","self",",","factor",":","int",")",":","self._factor","=","factor","def","__call__","(","self",",","num",")","return","self._factor","+","num"]
docstr: The framework calls __call__ function repeatedly for every input data.
  
  Args:
  
  Returns:
  
  Raises:
      An exception during __init__ can terminate the graph run.
docstr_tok: ["The","framework","calls","__call__","function","repeatedly","for","every","input","data",".","Args",":","Returns",":","Raises",":","An","exception","during","__init__","can","terminate","the","graph","run","."]
code: def __call__(self):
      """
      The framework calls __call__ function repeatedly for every input data.
  
      Args:
  
      Returns:
  
      Raises:
          An exception during __init__ can terminate the graph run.
      """
      raise NotImplementedError
  
imports: from abc import abstractmethod, ABC
  from enum import Enum
  from enum import Flag, auto
label_desc: Use image node_id 2 for calling the Operator obj's underlying member method code with example usage: obj.__call__() without return types