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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def is_enabled(self, feature_name):
 """ 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 """

        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