code: def get_attribute(self, session, attribute):
          
          try:
              sess = self.sessions[session]
          except KeyError:
              return None, StatusCode.error_invalid_object
  
          return sess.get_attribute(attribute)
docs: Retrieves the state of an attribute.
  
          Corresponds to viGetAttribute function of the VISA library.
  
          :param session: Unique logical identifier to a session, event, or find list.
          :param attribute: Resource attribute for which the state query is made (see Attributes.*)
          :return: The state of the queried attribute for a specified resource, return value of the library call.
          :rtype: unicode | str | list | int, VISAStatus