Merge pull request #316 from alibaba-damo-academy/dev_sx

zhifu gao

2023-03-30 bf4f152ad83d6213efdc5fb22762cb150dda0277

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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