fixed token_int is zero bug and add more puncs to sentence

dingbig

2023-03-21 d80d04636547c269ee98c1505e27bf5e1b434c52

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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