Merge pull request #323 from alibaba-damo-academy/dev_lhn2

hnluo

2023-04-03 85cf8c66967c2e1f8181ec4ff4d54b6cd26e21f9

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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