Make several type aliases private (python#7661)

Author: AlexWaygood

stdlib/_threading_local.pyi

@@ -3,14 +3,14 @@ from typing_extensions import TypeAlias
 from weakref import ReferenceType
 
 __all__ = ["local"]
-localdict: TypeAlias = dict[Any, Any]
+_localdict: TypeAlias = dict[Any, Any]
 
 class _localimpl:
     key: str
-    dicts: dict[int, tuple[ReferenceType[Any], localdict]]
+    dicts: dict[int, tuple[ReferenceType[Any], _localdict]]
     def __init__(self) -> None: ...
-    def get_dict(self) -> localdict: ...
-    def create_dict(self) -> localdict: ...
+    def get_dict(self) -> _localdict: ...
+    def create_dict(self) -> _localdict: ...
 
 class local:
     def __getattribute__(self, name: str) -> Any: ...

stdlib/audioop.pyi

@@ -1,12 +1,12 @@
 from typing_extensions import TypeAlias
 
-AdpcmState: TypeAlias = tuple[int, int]
-RatecvState: TypeAlias = tuple[int, tuple[tuple[int, int], ...]]
+_AdpcmState: TypeAlias = tuple[int, int]
+_RatecvState: TypeAlias = tuple[int, tuple[tuple[int, int], ...]]
 
 class error(Exception): ...
 
 def add(__fragment1: bytes, __fragment2: bytes, __width: int) -> bytes: ...
-def adpcm2lin(__fragment: bytes, __width: int, __state: AdpcmState | None) -> tuple[bytes, AdpcmState]: ...
+def adpcm2lin(__fragment: bytes, __width: int, __state: _AdpcmState | None) -> tuple[bytes, _AdpcmState]: ...
 def alaw2lin(__fragment: bytes, __width: int) -> bytes: ...
 def avg(__fragment: bytes, __width: int) -> int: ...
 def avgpp(__fragment: bytes, __width: int) -> int: ...
@@ -17,7 +17,7 @@ def findfactor(__fragment: bytes, __reference: bytes) -> float: ...
 def findfit(__fragment: bytes, __reference: bytes) -> tuple[int, float]: ...
 def findmax(__fragment: bytes, __length: int) -> int: ...
 def getsample(__fragment: bytes, __width: int, __index: int) -> int: ...
-def lin2adpcm(__fragment: bytes, __width: int, __state: AdpcmState | None) -> tuple[bytes, AdpcmState]: ...
+def lin2adpcm(__fragment: bytes, __width: int, __state: _AdpcmState | None) -> tuple[bytes, _AdpcmState]: ...
 def lin2alaw(__fragment: bytes, __width: int) -> bytes: ...
 def lin2lin(__fragment: bytes, __width: int, __newwidth: int) -> bytes: ...
 def lin2ulaw(__fragment: bytes, __width: int) -> bytes: ...
@@ -31,10 +31,10 @@ def ratecv(
     __nchannels: int,
     __inrate: int,
     __outrate: int,
-    __state: RatecvState | None,
+    __state: _RatecvState | None,
     __weightA: int = ...,
     __weightB: int = ...,
-) -> tuple[bytes, RatecvState]: ...
+) -> tuple[bytes, _RatecvState]: ...
 def reverse(__fragment: bytes, __width: int) -> bytes: ...
 def rms(__fragment: bytes, __width: int) -> int: ...
 def tomono(__fragment: bytes, __width: int, __lfactor: float, __rfactor: float) -> bytes: ...

stdlib/itertools.pyi

@@ -20,7 +20,7 @@ _T6 = TypeVar("_T6")
 
 _Step: TypeAlias = int | float | SupportsFloat | SupportsInt | SupportsIndex | SupportsComplex
 
-Predicate: TypeAlias = Callable[[_T], object]
+_Predicate: TypeAlias = Callable[[_T], object]
 
 # Technically count can take anything that implements a number protocol and has an add method
 # but we can't enforce the add method
@@ -76,12 +76,12 @@ class compress(Iterator[_T], Generic[_T]):
     def __next__(self) -> _T: ...
 
 class dropwhile(Iterator[_T], Generic[_T]):
-    def __init__(self, __predicate: Predicate[_T], __iterable: Iterable[_T]) -> None: ...
+    def __init__(self, __predicate: _Predicate[_T], __iterable: Iterable[_T]) -> None: ...
     def __iter__(self: Self) -> Self: ...
     def __next__(self) -> _T: ...
 
 class filterfalse(Iterator[_T], Generic[_T]):
-    def __init__(self, __predicate: Predicate[_T] | None, __iterable: Iterable[_T]) -> None: ...
+    def __init__(self, __predicate: _Predicate[_T] | None, __iterable: Iterable[_T]) -> None: ...
     def __iter__(self: Self) -> Self: ...
     def __next__(self) -> _T: ...
 
@@ -107,7 +107,7 @@ class starmap(Iterator[_T], Generic[_T]):
     def __next__(self) -> _T: ...
 
 class takewhile(Iterator[_T], Generic[_T]):
-    def __init__(self, __predicate: Predicate[_T], __iterable: Iterable[_T]) -> None: ...
+    def __init__(self, __predicate: _Predicate[_T], __iterable: Iterable[_T]) -> None: ...
     def __iter__(self: Self) -> Self: ...
     def __next__(self) -> _T: ...
 

stdlib/sqlite3/dbapi2.pyi

@@ -410,7 +410,8 @@ class InternalError(DatabaseError): ...
 class NotSupportedError(DatabaseError): ...
 class OperationalError(DatabaseError): ...
 
-OptimizedUnicode = str
+if sys.version_info < (3, 10):
+    OptimizedUnicode = str
 
 @final
 class PrepareProtocol: