Merge pull request #529 from alibaba-damo-academy/langgz-patch-1

zhifu gao

2023-05-18 38b69b021a17d1ef4190fb829fde9f739ba00785

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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