Merge pull request #260 from alibaba-damo-academy/tmp

zhifu gao

2023-03-17 41eb0b4b5e15df9ebf2c1308c8b3ae0c2ef4c845

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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