Big diff: Use new "|" union syntax (#5872)

stdlib/pkgutil.pyi

@@ -1,31 +1,31 @@
 import sys
 from _typeshed import SupportsRead
 from importlib.abc import Loader, MetaPathFinder, PathEntryFinder
-from typing import IO, Any, Callable, Iterable, Iterator, List, NamedTuple, Optional, Tuple, Union
+from typing import IO, Any, Callable, Iterable, Iterator, List, NamedTuple, Tuple
 
 class ModuleInfo(NamedTuple):
-    module_finder: Union[MetaPathFinder, PathEntryFinder]
+    module_finder: MetaPathFinder | PathEntryFinder
     name: str
     ispkg: bool
 
 def extend_path(path: List[str], name: str) -> List[str]: ...
 
 class ImpImporter:
-    def __init__(self, path: Optional[str] = ...) -> None: ...
+    def __init__(self, path: str | None = ...) -> None: ...
 
 class ImpLoader:
     def __init__(self, fullname: str, file: IO[str], filename: str, etc: Tuple[str, str, int]) -> None: ...
 
-def find_loader(fullname: str) -> Optional[Loader]: ...
-def get_importer(path_item: str) -> Optional[PathEntryFinder]: ...
+def find_loader(fullname: str) -> Loader | None: ...
+def get_importer(path_item: str) -> PathEntryFinder | None: ...
 def get_loader(module_or_name: str) -> Loader: ...
-def iter_importers(fullname: str = ...) -> Iterator[Union[MetaPathFinder, PathEntryFinder]]: ...
-def iter_modules(path: Optional[Iterable[str]] = ..., prefix: str = ...) -> Iterator[ModuleInfo]: ...
+def iter_importers(fullname: str = ...) -> Iterator[MetaPathFinder | PathEntryFinder]: ...
+def iter_modules(path: Iterable[str] | None = ..., prefix: str = ...) -> Iterator[ModuleInfo]: ...
 def read_code(stream: SupportsRead[bytes]) -> Any: ...  # undocumented
 def walk_packages(
-    path: Optional[Iterable[str]] = ..., prefix: str = ..., onerror: Optional[Callable[[str], None]] = ...
+    path: Iterable[str] | None = ..., prefix: str = ..., onerror: Callable[[str], None] | None = ...
 ) -> Iterator[ModuleInfo]: ...
-def get_data(package: str, resource: str) -> Optional[bytes]: ...
+def get_data(package: str, resource: str) -> bytes | None: ...
 
 if sys.version_info >= (3, 9):
     def resolve_name(name: str) -> Any: ...