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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 get_learned_skills(self, lang):
 """ Return the learned skill objects sorted by the order they were learned in. """

        skills = [skill for skill in
                  self.user_data.language_data[lang]['skills']]

        self._compute_dependency_order(skills)

        return [skill for skill in
                sorted(skills, key=lambda skill: skill['dependency_order'])
                if skill['learned']]