Merge pull request #263 from alibaba-damo-academy/tmp

zhifu gao

2023-03-18 eaa2f9b6c13b5e326aa453b0cfc1de7acbc86edf

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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