refactor: Export Eval(Names|Series)

- Long-term, should probably be defined in `nw.typing`
- Or just generally used in parts of each backend impl

#2064 (comment)

Author: dangotbanned

narwhals/_arrow/selectors.py

@@ -11,8 +11,8 @@
 
     from narwhals._arrow.dataframe import ArrowDataFrame
     from narwhals._arrow.series import ArrowSeries
-    from narwhals._compliant.selectors import EvalNames
-    from narwhals._compliant.selectors import EvalSeries
+    from narwhals._compliant import EvalNames
+    from narwhals._compliant import EvalSeries
     from narwhals.utils import _FullContext
 
 

narwhals/_compliant/__init__.py

@@ -7,6 +7,8 @@
 from narwhals._compliant.selectors import CompliantSelector
 from narwhals._compliant.selectors import CompliantSelectorNamespace
 from narwhals._compliant.selectors import EagerSelectorNamespace
+from narwhals._compliant.selectors import EvalNames
+from narwhals._compliant.selectors import EvalSeries
 from narwhals._compliant.selectors import LazySelectorNamespace
 from narwhals._compliant.series import CompliantSeries
 from narwhals._compliant.typing import CompliantFrameT
@@ -24,6 +26,8 @@
     "CompliantSeries",
     "CompliantSeriesT_co",
     "EagerSelectorNamespace",
+    "EvalNames",
+    "EvalSeries",
     "IntoCompliantExpr",
     "LazySelectorNamespace",
 ]

narwhals/_dask/selectors.py

@@ -14,8 +14,8 @@
 
     from typing_extensions import Self
 
-    from narwhals._compliant.selectors import EvalNames
-    from narwhals._compliant.selectors import EvalSeries
+    from narwhals._compliant import EvalNames
+    from narwhals._compliant import EvalSeries
     from narwhals._dask.dataframe import DaskLazyFrame
     from narwhals.utils import _FullContext
 

narwhals/_duckdb/selectors.py

@@ -10,8 +10,8 @@
     import duckdb
     from typing_extensions import Self
 
-    from narwhals._compliant.selectors import EvalNames
-    from narwhals._compliant.selectors import EvalSeries
+    from narwhals._compliant import EvalNames
+    from narwhals._compliant import EvalSeries
     from narwhals._duckdb.dataframe import DuckDBLazyFrame
     from narwhals.utils import _FullContext
 

narwhals/_pandas_like/selectors.py

@@ -11,8 +11,8 @@
 if TYPE_CHECKING:
     from typing_extensions import Self
 
-    from narwhals._compliant.selectors import EvalNames
-    from narwhals._compliant.selectors import EvalSeries
+    from narwhals._compliant import EvalNames
+    from narwhals._compliant import EvalSeries
     from narwhals._pandas_like.dataframe import PandasLikeDataFrame
     from narwhals._pandas_like.series import PandasLikeSeries
     from narwhals.utils import _FullContext

narwhals/_spark_like/selectors.py

@@ -10,8 +10,8 @@
     from pyspark.sql import Column
     from typing_extensions import Self
 
-    from narwhals._compliant.selectors import EvalNames
-    from narwhals._compliant.selectors import EvalSeries
+    from narwhals._compliant import EvalNames
+    from narwhals._compliant import EvalSeries
     from narwhals._spark_like.dataframe import SparkLikeLazyFrame
     from narwhals.utils import _FullContext