Merge pull request #325 from alibaba-damo-academy/dev_lzr

Lizerui9926

2023-04-04 a513d1ac95ae6f7d7cbc6dfefc9bbb3f78718163

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from abc import ABC
from abc import abstractmethod
from typing import Iterator
 
 
class AbsIterFactory(ABC):
    @abstractmethod
    def build_iter(self, epoch: int, shuffle: bool = None) -> Iterator:
        raise NotImplementedError