parameters: (self, profile_datum)
docstring: Constructor.
  
      Args:
        profile_datum: (`ProfileDatum`) an instance of `ProfileDatum` to
          initialize this object with.
docstring_summary: Constructor.
docstring_tokens: Constructor .
function: def __init__(self, profile_datum):
      """Constructor.
  
      Args:
        profile_datum: (`ProfileDatum`) an instance of `ProfileDatum` to
          initialize this object with.
      """
  
      self.total_op_time = profile_datum.op_time
      self.total_exec_time = profile_datum.exec_time
      device_and_node = "%s:%s" % (profile_datum.device_name,
                                   profile_datum.node_exec_stats.node_name)
      self._node_to_exec_count = {device_and_node: 1}
function_tokens: def __init__ ( self , profile_datum ) : self . total_op_time = profile_datum . op_time self . total_exec_time = profile_datum . exec_time device_and_node = "%s:%s" % ( profile_datum . device_name , profile_datum . node_exec_stats . node_name ) self . _node_to_exec_count = { device_and_node : 1 }