Merge pull request #398 from alibaba-damo-academy/dev_zly2

zhifu gao

2023-04-21 49909f904c1382fd3c23ee64ff6737689216373f

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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