Merge pull request #252 from alibaba-damo-academy/dev_wjm

hnluo

2023-03-17 2f92844afad4da59bfe3bf09bb35e66204fe1ad6

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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