Merge pull request #140 from alibaba-damo-academy/dev_lzr

zhifu gao

2023-02-21 676957a1e7000a948bb2cc876ecec0f1b7768afa

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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