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

stdlib/webbrowser.pyi

@@ -1,19 +1,19 @@
 import sys
-from typing import Callable, List, Optional, Sequence, Union
+from typing import Callable, List, Sequence
 
 class Error(Exception): ...
 
 if sys.version_info >= (3, 7):
     def register(
-        name: str, klass: Optional[Callable[[], BaseBrowser]], instance: Optional[BaseBrowser] = ..., *, preferred: bool = ...
+        name: str, klass: Callable[[], BaseBrowser] | None, instance: BaseBrowser | None = ..., *, preferred: bool = ...
     ) -> None: ...
 
 else:
     def register(
-        name: str, klass: Optional[Callable[[], BaseBrowser]], instance: Optional[BaseBrowser] = ..., update_tryorder: int = ...
+        name: str, klass: Callable[[], BaseBrowser] | None, instance: BaseBrowser | None = ..., update_tryorder: int = ...
     ) -> None: ...
 
-def get(using: Optional[str] = ...) -> BaseBrowser: ...
+def get(using: str | None = ...) -> BaseBrowser: ...
 def open(url: str, new: int = ..., autoraise: bool = ...) -> bool: ...
 def open_new(url: str) -> bool: ...
 def open_new_tab(url: str) -> bool: ...
@@ -31,14 +31,14 @@ class GenericBrowser(BaseBrowser):
     args: List[str]
     name: str
     basename: str
-    def __init__(self, name: Union[str, Sequence[str]]) -> None: ...
+    def __init__(self, name: str | Sequence[str]) -> None: ...
     def open(self, url: str, new: int = ..., autoraise: bool = ...) -> bool: ...
 
 class BackgroundBrowser(GenericBrowser):
     def open(self, url: str, new: int = ..., autoraise: bool = ...) -> bool: ...
 
 class UnixBrowser(BaseBrowser):
-    raise_opts: Optional[List[str]]
+    raise_opts: List[str] | None
     background: bool
     redirect_stdout: bool
     remote_args: List[str]