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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_display_name(self, mxit_id, scope='profile/public'):
 """ Retrieve the Mxit user's display name No user authentication required """

        display_name = _get(
            token=self.oauth.get_app_token(scope),
            uri='/user/public/displayname/' + urllib.quote(mxit_id)
        )

        if display_name.startswith('"') and display_name.endswith('"'):
            display_name = display_name[1:-1]

        return display_name