code: def is_enabled(self, feature_name):
          
          feature_name = feature_name.upper()
          if feature_name not in self:
              raise RuntimeError("Feature '{}' is unknown, known features are: {}".format(
                  feature_name, list(self.keys())))
          return self[feature_name].enabled
docs: Check for a particular feature by name
  
          Parameters
          ----------
          feature_name: str
              The name of a valid feature as string for example 'CUDA'
  
          Returns
          -------
          Boolean
              True if it's enabled, False if it's disabled, RuntimeError if the feature is not known