Merge pull request #351 from alibaba-damo-academy/dev_aky

aky15

2023-04-18 606141f5bab7b5c6e70cc8d94238461c1b8cdbb8

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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