Merge branch 'alibaba-damo-academy:main' into main

Daniel

2023-04-22 6f47638740519990f577f1bd36279f4ed1c23a02

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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