chore: rename _change_dtypes to _change_version

narwhals/_arrow/dataframe.py

@@ -72,7 +72,7 @@ def __narwhals_dataframe__(self: Self) -> Self:
     def __narwhals_lazyframe__(self: Self) -> Self:
         return self
 
-    def _change_dtypes(self: Self, version: Version) -> Self:
+    def _change_version(self: Self, version: Version) -> Self:
         return self.__class__(
             self._native_frame, backend_version=self._backend_version, version=version
         )

narwhals/_arrow/series.py

@@ -53,7 +53,7 @@ def __init__(
         self._backend_version = backend_version
         self._version = version
 
-    def _change_dtypes(self: Self, version: Version) -> Self:
+    def _change_version(self: Self, version: Version) -> Self:
         return self.__class__(
             self._native_series,
             name=self._name,

narwhals/_dask/dataframe.py

@@ -59,7 +59,7 @@ def __narwhals_namespace__(self) -> DaskNamespace:
     def __narwhals_lazyframe__(self) -> Self:
         return self
 
-    def _change_dtypes(self, version: Version) -> Self:
+    def _change_version(self, version: Version) -> Self:
         return self.__class__(
             self._native_frame, backend_version=self._backend_version, version=version
         )

narwhals/_duckdb/dataframe.py

@@ -141,7 +141,7 @@ def to_pandas(self: Self) -> pd.DataFrame:
     def to_arrow(self: Self) -> pa.Table:
         return self._native_frame.arrow()
 
-    def _change_dtypes(self: Self, version: Version) -> Self:
+    def _change_version(self: Self, version: Version) -> Self:
         return self.__class__(self._native_frame, version=version)
 
     def _from_native_frame(self: Self, df: Any) -> Self:

narwhals/_ibis/dataframe.py

@@ -121,7 +121,7 @@ def __getattr__(self, attr: str) -> Any:
         )
         raise NotImplementedError(msg)
 
-    def _change_dtypes(self: Self, version: Version) -> Self:
+    def _change_version(self: Self, version: Version) -> Self:
         return self.__class__(self._native_frame, version=version)
 
     def _from_native_frame(self: Self, df: Any) -> Self:

narwhals/_interchange/dataframe.py

@@ -88,7 +88,7 @@ def __init__(self, df: Any, version: Version) -> None:
         self._interchange_frame = df.__dataframe__()
         self._version = version
 
-    def _change_dtypes(self: Self, version: Version) -> Self:
+    def _change_version(self: Self, version: Version) -> Self:
         return self.__class__(
             WrapInterchangeFrame(self._interchange_frame), version=version
         )

narwhals/_pandas_like/dataframe.py

@@ -101,7 +101,7 @@ def _validate_columns(self, columns: pd.Index) -> None:
             msg = f"Expected unique column names, got:{msg}"
             raise ValueError(msg)
 
-    def _change_dtypes(self, version: Version) -> Self:
+    def _change_version(self, version: Version) -> Self:
         return self.__class__(
             self._native_frame,
             implementation=self._implementation,

narwhals/_pandas_like/series.py

@@ -116,7 +116,7 @@ def __getitem__(self, idx: int | slice | Sequence[int]) -> Any | Self:
             return self._native_series.iloc[idx]
         return self._from_native_series(self._native_series.iloc[idx])
 
-    def _change_dtypes(self, version: Version) -> Self:
+    def _change_version(self, version: Version) -> Self:
         return self.__class__(
             self._native_series,
             implementation=self._implementation,

narwhals/_polars/dataframe.py

@@ -64,7 +64,7 @@ def __native_namespace__(self: Self) -> ModuleType:
         msg = f"Expected polars, got: {type(self._implementation)}"  # pragma: no cover
         raise AssertionError(msg)
 
-    def _change_dtypes(self: Self, version: Version) -> Self:
+    def _change_version(self: Self, version: Version) -> Self:
         return self.__class__(
             self._native_frame, backend_version=self._backend_version, version=version
         )
@@ -369,7 +369,7 @@ def _from_native_frame(self: Self, df: pl.LazyFrame) -> Self:
             df, backend_version=self._backend_version, version=self._version
         )
 
-    def _change_dtypes(self: Self, version: Version) -> Self:
+    def _change_version(self: Self, version: Version) -> Self:
         return self.__class__(
             self._native_frame, backend_version=self._backend_version, version=version
         )

narwhals/_polars/series.py

@@ -52,7 +52,7 @@ def __native_namespace__(self: Self) -> ModuleType:
         msg = f"Expected polars, got: {type(self._implementation)}"  # pragma: no cover
         raise AssertionError(msg)
 
-    def _change_dtypes(self: Self, version: Version) -> Self:
+    def _change_version(self: Self, version: Version) -> Self:
         return self.__class__(
             self._native_series, backend_version=self._backend_version, version=version
         )

narwhals/stable/v1/__init__.py

@@ -1166,17 +1166,17 @@ def _stableify(
 ) -> DataFrame[IntoFrameT] | LazyFrame[IntoFrameT] | Series | Expr | Any:
     if isinstance(obj, NwDataFrame):
         return DataFrame(
-            obj._compliant_frame._change_dtypes(Version.V1),
+            obj._compliant_frame._change_version(Version.V1),
             level=obj._level,
         )
     if isinstance(obj, NwLazyFrame):
         return LazyFrame(
-            obj._compliant_frame._change_dtypes(Version.V1),
+            obj._compliant_frame._change_version(Version.V1),
             level=obj._level,
         )
     if isinstance(obj, NwSeries):
         return Series(
-            obj._compliant_series._change_dtypes(Version.V1),
+            obj._compliant_series._change_version(Version.V1),
             level=obj._level,
         )
     if isinstance(obj, NwExpr):

tests/translate/from_native_test.py

@@ -32,23 +32,23 @@
 
 
 class MockDataFrame:
-    def _change_dtypes(self, _version: Version) -> MockDataFrame:
+    def _change_version(self, _version: Version) -> MockDataFrame:
         return self
 
     def __narwhals_dataframe__(self) -> Any:
         return self
 
 
 class MockLazyFrame:
-    def _change_dtypes(self, _version: Version) -> MockLazyFrame:
+    def _change_version(self, _version: Version) -> MockLazyFrame:
         return self
 
     def __narwhals_lazyframe__(self) -> Any:
         return self
 
 
 class MockSeries:
-    def _change_dtypes(self, _version: Version) -> MockSeries:
+    def _change_version(self, _version: Version) -> MockSeries:
         return self
 
     def __narwhals_series__(self) -> Any: