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

Daniel

2023-03-16 a1b63ca9cc3f21e70c7a67d49c37f9ec58052e34

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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