wehub-resource-sync
24 lines
617 B
Python
24 lines
617 B
Python
import numpy as np
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import pyarrow
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from ray.data.block import BlockAccessor
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from ray.data.datasource.file_datasink import BlockBasedFileDatasink
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class NumpyDatasink(BlockBasedFileDatasink):
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def __init__(
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self,
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path: str,
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column: str,
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*,
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file_format: str = "npy",
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**file_datasink_kwargs,
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):
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super().__init__(path, file_format=file_format, **file_datasink_kwargs)
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self.column = column
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def write_block_to_file(self, block: BlockAccessor, file: "pyarrow.NativeFile"):
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value = block.to_numpy(self.column)
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np.save(file, value)
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