def next(self):
        if self.index == 1-len(self.users):
            if self.unique:
                try:
                    return self._generate_new_user()
                except GraphAPIError:
                    raise StopIteration
            else:
                self.index = 0
                return self.users[self.index]
        self.index += 1
        return self.users[self.index]
dataset/ETHPy150Open sbaechler/django-scaffolding/scaffolding/external/facebook_graph.py/FacebookTestUser.next/swapped operands of `-`