Merge pull request #857 from alibaba-damo-academy/dev_wjm_tmp

hnluo

2023-08-15 3a71c7a227ebd8b61995e2fb8ee0c3c25a8c19c4

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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