Fixes

Author: rhshadrach

pandas/_typing.py

@@ -107,7 +107,7 @@
 
 
 class SequenceNotStr(Protocol[_T_co]):
-    __module__ = "pandas.api.typing.aliases"
+    __module__: str = "pandas.api.typing.aliases"
 
     @overload
     def __getitem__(self, index: SupportsIndex, /) -> _T_co: ...
@@ -280,15 +280,15 @@ def tell(self) -> int:
 
 
 class ReadBuffer(BaseBuffer, Protocol[AnyStr_co]):
-    __module__ = "pandas.api.typing.aliases"
+    __module__: str = "pandas.api.typing.aliases"
 
     def read(self, n: int = ..., /) -> AnyStr_co:
         # for BytesIOWrapper, gzip.GzipFile, bz2.BZ2File
         ...
 
 
 class WriteBuffer(BaseBuffer, Protocol[AnyStr_contra]):
-    __module__ = "pandas.api.typing.aliases"
+    __module__: str = "pandas.api.typing.aliases"
 
     def write(self, b: AnyStr_contra, /) -> Any:
         # for gzip.GzipFile, bz2.BZ2File
@@ -300,19 +300,19 @@ def flush(self) -> Any:
 
 
 class ReadPickleBuffer(ReadBuffer[bytes], Protocol):
-    __module__ = "pandas.api.typing.aliases"
+    __module__: str = "pandas.api.typing.aliases"
 
     def readline(self) -> bytes: ...
 
 
 class WriteExcelBuffer(WriteBuffer[bytes], Protocol):
-    __module__ = "pandas.api.typing.aliases"
+    __module__: str = "pandas.api.typing.aliases"
 
     def truncate(self, size: int | None = ..., /) -> int: ...
 
 
 class ReadCsvBuffer(ReadBuffer[AnyStr_co], Protocol):
-    __module__ = "pandas.api.typing.aliases"
+    __module__: str = "pandas.api.typing.aliases"
 
     def __iter__(self) -> Iterator[AnyStr_co]:
         # for engine=python

pandas/tests/api/test_api.py

@@ -606,6 +606,8 @@ def get_pandas_objects(
     if not recurse:
         return objs
 
+    # __file__ can, but shouldn't, be None
+    assert isinstance(module.__file__, str)
     paths = [pathlib.Path(module.__file__).parent]
     for module_info in pkgutil.walk_packages(paths):
         name = module_info.name

pandas/tests/series/methods/test_astype.py

@@ -579,10 +579,7 @@ def test_astype_categorical_invalid_conversions(self):
         ser = Series(np.random.default_rng(2).integers(0, 10000, 100)).sort_values()
         ser = cut(ser, range(0, 10500, 500), right=False, labels=cat)
 
-        msg = (
-            "dtype '<class 'pandas.core.arrays.categorical.Categorical'>' "
-            "not understood"
-        )
+        msg = "dtype '<class 'pandas.Categorical'>' not understood"
         with pytest.raises(TypeError, match=msg):
             ser.astype(Categorical)
         with pytest.raises(TypeError, match=msg):