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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 user_is_sponsor(self, user):
 """Return whether the given user is a sponsor of the activity. Returns: Boolean """

        sponsors = self.get_true_sponsors()
        for sponsor in sponsors:
            sp_user = sponsor.user
            if sp_user == user:
                return True

        return False