done

lib/python3.11/site-packages/narwhals/_arrow/selectors.py

@@ -0,0 +1,33 @@
+from __future__ import annotations
+
+from typing import TYPE_CHECKING
+
+from narwhals._arrow.expr import ArrowExpr
+from narwhals._compliant import CompliantSelector, EagerSelectorNamespace
+
+if TYPE_CHECKING:
+    from narwhals._arrow.dataframe import ArrowDataFrame  # noqa: F401
+    from narwhals._arrow.series import ArrowSeries  # noqa: F401
+    from narwhals._compliant.typing import ScalarKwargs
+
+
+class ArrowSelectorNamespace(EagerSelectorNamespace["ArrowDataFrame", "ArrowSeries"]):
+    @property
+    def _selector(self) -> type[ArrowSelector]:
+        return ArrowSelector
+
+
+class ArrowSelector(CompliantSelector["ArrowDataFrame", "ArrowSeries"], ArrowExpr):  # type: ignore[misc]
+    _depth: int = 0
+    _scalar_kwargs: ScalarKwargs = {}  # noqa: RUF012
+    _function_name: str = "selector"
+
+    def _to_expr(self) -> ArrowExpr:
+        return ArrowExpr(
+            self._call,
+            depth=self._depth,
+            function_name=self._function_name,
+            evaluate_output_names=self._evaluate_output_names,
+            alias_output_names=self._alias_output_names,
+            version=self._version,
+        )