Merge pull request #40 from alibaba-damo-academy/dev

zhifu gao

2023-01-18 2a629b3d61fa0ea9a30bcdd49f8cbd07154e47b4

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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