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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 getExerciseDetails(self, identifier):
 """Gets the details for a particular exercise. """

        exercise = self._getExercise(identifier)
        response = {
            b"identifier": exercise.identifier,
            b"title": exercise.title,
            b"description": exercise.description,
            b"solved": exercise.wasSolvedBy(self.user)
        }
        return response