fix(python): Fix typing for SchemaDefinition (#19647)

pola-rs · Nov 6, 2024 · 12ba207 · 12ba207
1 parent 10abada
commit 12ba207
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/py-polars/polars/_typing.py b/py-polars/polars/_typing.py
@@ -72,7 +72,7 @@ def __arrow_c_stream__(self, requested_schema: object | None = None) -> object:
 ]
 
 SchemaDefinition: TypeAlias = Union[
-    Mapping[str, Union[PolarsDataType, PythonDataType]],
+    Mapping[str, Union[PolarsDataType, PythonDataType, None]],
     Sequence[Union[str, tuple[str, Union[PolarsDataType, PythonDataType, None]]]],
 ]
 SchemaDict: TypeAlias = Mapping[str, PolarsDataType]