add transformerLM egs(aishell2)

wucong.lyb

2023-02-21 526d2e544e92b474eaa082ad96735e01ceccb2cc

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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