Merge branch 'main' into series-from-numpy

Author: dangotbanned

narwhals/_arrow/dataframe.py

@@ -601,7 +601,6 @@ def lazy(self: Self, *, backend: Implementation | None = None) -> CompliantLazyF
                 df=duckdb.table("df"),
                 backend_version=parse_version(duckdb),
                 version=self._version,
-                validate_column_names=False,
             )
         elif backend is Implementation.POLARS:
             import polars as pl  # ignore-banned-import
@@ -623,7 +622,6 @@ def lazy(self: Self, *, backend: Implementation | None = None) -> CompliantLazyF
                 native_dataframe=dd.from_pandas(self._native_frame.to_pandas()),
                 backend_version=parse_version(dask),
                 version=self._version,
-                validate_column_names=False,
             )
         raise AssertionError  # pragma: no cover
 

narwhals/_dask/dataframe.py

@@ -42,8 +42,6 @@ def __init__(
         *,
         backend_version: tuple[int, ...],
         version: Version,
-        # Unused, just for compatibility. We only validate when collecting.
-        validate_column_names: bool = False,
     ) -> None:
         self._native_frame: dd.DataFrame = native_dataframe
         self._backend_version = backend_version

narwhals/_duckdb/dataframe.py

@@ -50,8 +50,6 @@ def __init__(
         *,
         backend_version: tuple[int, ...],
         version: Version,
-        # Unused, just for compatibility. We only validate when collecting.
-        validate_column_names: bool = False,
     ) -> None:
         self._native_frame: duckdb.DuckDBPyRelation = df
         self._version = version

narwhals/_duckdb/utils.py

@@ -31,7 +31,7 @@ def maybe_evaluate_expr(
             msg = "Multi-output expressions (e.g. `nw.all()` or `nw.col('a', 'b')`) not supported in this context"
             raise ValueError(msg)
         return column_results[0]
-    return duckdb.ConstantExpression(obj)
+    return lit(obj)
 
 
 def evaluate_exprs(

narwhals/_pandas_like/dataframe.py

@@ -798,7 +798,6 @@ def lazy(self: Self, *, backend: Implementation | None = None) -> CompliantLazyF
                 df=duckdb.table("pandas_df"),
                 backend_version=parse_version(duckdb),
                 version=self._version,
-                validate_column_names=False,
             )
         elif backend is Implementation.POLARS:
             import polars as pl  # ignore-banned-import
@@ -820,7 +819,6 @@ def lazy(self: Self, *, backend: Implementation | None = None) -> CompliantLazyF
                 native_dataframe=dd.from_pandas(pandas_df),
                 backend_version=parse_version(dask),
                 version=self._version,
-                validate_column_names=False,
             )
         raise AssertionError  # pragma: no cover
 

narwhals/_polars/dataframe.py

@@ -274,7 +274,6 @@ def lazy(self: Self, *, backend: Implementation | None = None) -> CompliantLazyF
                 df=duckdb.table("df"),
                 backend_version=parse_version(duckdb),
                 version=self._version,
-                validate_column_names=False,
             )
         elif backend is Implementation.DASK:
             import dask  # ignore-banned-import
@@ -286,7 +285,6 @@ def lazy(self: Self, *, backend: Implementation | None = None) -> CompliantLazyF
                 native_dataframe=dd.from_pandas(self._native_frame.to_pandas()),
                 backend_version=parse_version(dask),
                 version=self._version,
-                validate_column_names=False,
             )
         raise AssertionError  # pragma: no cover
 

narwhals/_spark_like/dataframe.py

@@ -55,8 +55,6 @@ def __init__(
         backend_version: tuple[int, ...],
         version: Version,
         implementation: Implementation,
-        # Unused, just for compatibility. We only validate when collecting.
-        validate_column_names: bool = False,
     ) -> None:
         self._native_frame: SQLFrameDataFrame = native_dataframe
         self._backend_version = backend_version

narwhals/translate.py

@@ -647,7 +647,6 @@ def _from_native_impl(  # noqa: PLR0915
                 native_object,
                 backend_version=parse_version(get_dask()),
                 version=version,
-                validate_column_names=True,
             ),
             level="lazy",
         )
@@ -674,7 +673,6 @@ def _from_native_impl(  # noqa: PLR0915
                     native_object,
                     backend_version=backend_version,
                     version=version,
-                    validate_column_names=True,
                 ),
                 level="interchange",
             )
@@ -683,7 +681,6 @@ def _from_native_impl(  # noqa: PLR0915
                 native_object,
                 backend_version=backend_version,
                 version=version,
-                validate_column_names=True,
             ),
             level="lazy",
         )
@@ -735,7 +732,6 @@ def _from_native_impl(  # noqa: PLR0915
                 backend_version=parse_version(get_pyspark()),
                 version=version,
                 implementation=Implementation.PYSPARK,
-                validate_column_names=True,
             ),
             level="lazy",
         )
@@ -758,7 +754,6 @@ def _from_native_impl(  # noqa: PLR0915
                 backend_version=backend_version,
                 version=version,
                 implementation=Implementation.SQLFRAME,
-                validate_column_names=True,
             ),
             level="lazy",
         )