Можно ли написать генератор без слова yield

gen = (x ** 2 for x in range(5))  # генераторное выражение
print(next(gen))  # 0
print(next(gen))  # 1

class SquareGenerator:
    def __init__(self, limit):
        self.n = 0
        self.limit = limit

    def __iter__(self):
        return self

    def __next__(self):
        if self.n < self.limit:
            result = self.n ** 2
            self.n += 1
            return result
        raise StopIteration

gen = SquareGenerator(5)
print(next(gen))  # 0