35 lines
1.1 KiB
Python
35 lines
1.1 KiB
Python
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from __future__ import annotations
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from typing import TYPE_CHECKING
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from narwhals._compliant import CompliantSelector, LazySelectorNamespace
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from narwhals._dask.expr import DaskExpr
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if TYPE_CHECKING:
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import dask.dataframe.dask_expr as dx # noqa: F401
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from narwhals._compliant.typing import ScalarKwargs
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from narwhals._dask.dataframe import DaskLazyFrame # noqa: F401
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class DaskSelectorNamespace(LazySelectorNamespace["DaskLazyFrame", "dx.Series"]):
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@property
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def _selector(self) -> type[DaskSelector]:
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return DaskSelector
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class DaskSelector(CompliantSelector["DaskLazyFrame", "dx.Series"], DaskExpr): # type: ignore[misc]
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_depth: int = 0
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_scalar_kwargs: ScalarKwargs = {} # noqa: RUF012
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_function_name: str = "selector"
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def _to_expr(self) -> DaskExpr:
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return DaskExpr(
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self._call,
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depth=self._depth,
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function_name=self._function_name,
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evaluate_output_names=self._evaluate_output_names,
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alias_output_names=self._alias_output_names,
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version=self._version,
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)
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