Replace __init__ with __new__ in builtins and types (#10761)

stdlib/builtins.pyi

@@ -867,7 +867,7 @@ class memoryview(Sequence[int]):
     def contiguous(self) -> bool: ...
     @property
     def nbytes(self) -> int: ...
-    def __init__(self, obj: ReadableBuffer) -> None: ...
+    def __new__(cls, obj: ReadableBuffer) -> Self: ...
     def __enter__(self) -> Self: ...
     def __exit__(
         self, __exc_type: type[BaseException] | None, __exc_val: BaseException | None, __exc_tb: TracebackType | None
@@ -946,9 +946,9 @@ class slice:
     @property
     def stop(self) -> Any: ...
     @overload
-    def __init__(self, __stop: Any) -> None: ...
+    def __new__(cls, __stop: Any) -> Self: ...
     @overload
-    def __init__(self, __start: Any, __stop: Any, __step: Any = ...) -> None: ...
+    def __new__(cls, __start: Any, __stop: Any, __step: Any = ...) -> Self: ...
     def __eq__(self, __value: object) -> bool: ...
     __hash__: ClassVar[None]  # type: ignore[assignment]
     def indices(self, __len: SupportsIndex) -> tuple[int, int, int]: ...
@@ -1203,7 +1203,7 @@ class frozenset(AbstractSet[_T_co], Generic[_T_co]):
         def __class_getitem__(cls, __item: Any) -> GenericAlias: ...
 
 class enumerate(Iterator[tuple[int, _T]], Generic[_T]):
-    def __init__(self, iterable: Iterable[_T], start: int = ...) -> None: ...
+    def __new__(cls, iterable: Iterable[_T], start: int = ...) -> Self: ...
     def __iter__(self) -> Self: ...
     def __next__(self) -> tuple[int, _T]: ...
     if sys.version_info >= (3, 9):
@@ -1218,9 +1218,9 @@ class range(Sequence[int]):
     @property
     def step(self) -> int: ...
     @overload
-    def __init__(self, __stop: SupportsIndex) -> None: ...
+    def __new__(cls, __stop: SupportsIndex) -> Self: ...
     @overload
-    def __init__(self, __start: SupportsIndex, __stop: SupportsIndex, __step: SupportsIndex = ...) -> None: ...
+    def __new__(cls, __start: SupportsIndex, __stop: SupportsIndex, __step: SupportsIndex = ...) -> Self: ...
     def count(self, __value: int) -> int: ...
     def index(self, __value: int) -> int: ...  # type: ignore[override]
     def __len__(self) -> int: ...
@@ -1413,11 +1413,11 @@ def exit(code: sys._ExitCode = None) -> NoReturn: ...
 
 class filter(Iterator[_T], Generic[_T]):
     @overload
-    def __init__(self, __function: None, __iterable: Iterable[_T | None]) -> None: ...
+    def __new__(cls, __function: None, __iterable: Iterable[_T | None]) -> Self: ...
     @overload
-    def __init__(self, __function: Callable[[_S], TypeGuard[_T]], __iterable: Iterable[_S]) -> None: ...
+    def __new__(cls, __function: Callable[[_S], TypeGuard[_T]], __iterable: Iterable[_S]) -> Self: ...
     @overload
-    def __init__(self, __function: Callable[[_T], Any], __iterable: Iterable[_T]) -> None: ...
+    def __new__(cls, __function: Callable[[_T], Any], __iterable: Iterable[_T]) -> Self: ...
     def __iter__(self) -> Self: ...
     def __next__(self) -> _T: ...
 
@@ -1472,35 +1472,35 @@ def locals() -> dict[str, Any]: ...
 
 class map(Iterator[_S], Generic[_S]):
     @overload
-    def __init__(self, __func: Callable[[_T1], _S], __iter1: Iterable[_T1]) -> None: ...
+    def __new__(cls, __func: Callable[[_T1], _S], __iter1: Iterable[_T1]) -> Self: ...
     @overload
-    def __init__(self, __func: Callable[[_T1, _T2], _S], __iter1: Iterable[_T1], __iter2: Iterable[_T2]) -> None: ...
+    def __new__(cls, __func: Callable[[_T1, _T2], _S], __iter1: Iterable[_T1], __iter2: Iterable[_T2]) -> Self: ...
     @overload
-    def __init__(
-        self, __func: Callable[[_T1, _T2, _T3], _S], __iter1: Iterable[_T1], __iter2: Iterable[_T2], __iter3: Iterable[_T3]
-    ) -> None: ...
+    def __new__(
+        cls, __func: Callable[[_T1, _T2, _T3], _S], __iter1: Iterable[_T1], __iter2: Iterable[_T2], __iter3: Iterable[_T3]
+    ) -> Self: ...
     @overload
-    def __init__(
-        self,
+    def __new__(
+        cls,
         __func: Callable[[_T1, _T2, _T3, _T4], _S],
         __iter1: Iterable[_T1],
         __iter2: Iterable[_T2],
         __iter3: Iterable[_T3],
         __iter4: Iterable[_T4],
-    ) -> None: ...
+    ) -> Self: ...
     @overload
-    def __init__(
-        self,
+    def __new__(
+        cls,
         __func: Callable[[_T1, _T2, _T3, _T4, _T5], _S],
         __iter1: Iterable[_T1],
         __iter2: Iterable[_T2],
         __iter3: Iterable[_T3],
         __iter4: Iterable[_T4],
         __iter5: Iterable[_T5],
-    ) -> None: ...
+    ) -> Self: ...
     @overload
-    def __init__(
-        self,
+    def __new__(
+        cls,
         __func: Callable[..., _S],
         __iter1: Iterable[Any],
         __iter2: Iterable[Any],
@@ -1509,7 +1509,7 @@ class map(Iterator[_S], Generic[_S]):
         __iter5: Iterable[Any],
         __iter6: Iterable[Any],
         *iterables: Iterable[Any],
-    ) -> None: ...
+    ) -> Self: ...
     def __iter__(self) -> Self: ...
     def __next__(self) -> _S: ...