add example of grpc client

veelion

2023-03-27 fb06c50b11cf4e5e3a55fc62a60f595f2549ff76

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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