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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_cover_image(self, output_file_path=None, scope='profile/public'):
 """ Retrieve the Mxit user's cover image No user authentication required """

        data = _get(
            token=self.oauth.get_user_token(scope),
            uri='/user/cover'
        )

        if output_file_path:
            with open(output_file_path, 'w') as f:
                f.write(data)
        else:
            return data