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from typing import Mapping, Optional, Sequence, Union
from datasets import load_dataset as hf_load_dataset
from .operator import SourceOperator
from .stream import MultiStream
class Loader(SourceOperator):
pass
class LoadHF(Loader):
path: str
name: Optional[str] = None
data_dir: Optional[str] = None
data_files: Optional[Union[str, Sequence[str], Mapping[str, Union[str, Sequence[str]]]]] = None
cached = False
def process(self):
dataset = hf_load_dataset(
self.path, name=self.name, data_dir=self.data_dir, data_files=self.data_files, streaming=True
)
return MultiStream.from_iterables(dataset)
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