Switch to PEP-604 syntax in python2 stubs (#5915)

Signed-off-by: oleg.hoefling <oleg.hoefling@gmail.com>

stdlib/@python2/bdb.pyi

@@ -1,5 +1,5 @@
 from types import CodeType, FrameType, TracebackType
-from typing import IO, Any, Callable, Dict, Iterable, List, Mapping, Optional, Set, SupportsInt, Tuple, Type, TypeVar, Union
+from typing import IO, Any, Callable, Dict, Iterable, List, Mapping, Set, SupportsInt, Tuple, Type, TypeVar
 
 _T = TypeVar("_T")
 _TraceDispatch = Callable[[FrameType, str, Any], Any]  # TODO: Recursive type
@@ -11,16 +11,16 @@ class BdbQuit(Exception): ...
 
 class Bdb:
 
-    skip: Optional[Set[str]]
+    skip: Set[str] | None
     breaks: Dict[str, List[int]]
     fncache: Dict[str, str]
-    frame_returning: Optional[FrameType]
-    botframe: Optional[FrameType]
+    frame_returning: FrameType | None
+    botframe: FrameType | None
     quitting: bool
-    stopframe: Optional[FrameType]
-    returnframe: Optional[FrameType]
+    stopframe: FrameType | None
+    returnframe: FrameType | None
     stoplineno: int
-    def __init__(self, skip: Optional[Iterable[str]] = ...) -> None: ...
+    def __init__(self, skip: Iterable[str] | None = ...) -> None: ...
     def canonic(self, filename: str) -> str: ...
     def reset(self) -> None: ...
     def trace_dispatch(self, frame: FrameType, event: str, arg: Any) -> _TraceDispatch: ...
@@ -31,21 +31,21 @@ class Bdb:
     def is_skipped_module(self, module_name: str) -> bool: ...
     def stop_here(self, frame: FrameType) -> bool: ...
     def break_here(self, frame: FrameType) -> bool: ...
-    def do_clear(self, arg: Any) -> Optional[bool]: ...
+    def do_clear(self, arg: Any) -> bool | None: ...
     def break_anywhere(self, frame: FrameType) -> bool: ...
     def user_call(self, frame: FrameType, argument_list: None) -> None: ...
     def user_line(self, frame: FrameType) -> None: ...
     def user_return(self, frame: FrameType, return_value: Any) -> None: ...
     def user_exception(self, frame: FrameType, exc_info: _ExcInfo) -> None: ...
-    def set_until(self, frame: FrameType, lineno: Optional[int] = ...) -> None: ...
+    def set_until(self, frame: FrameType, lineno: int | None = ...) -> None: ...
     def set_step(self) -> None: ...
     def set_next(self, frame: FrameType) -> None: ...
     def set_return(self, frame: FrameType) -> None: ...
-    def set_trace(self, frame: Optional[FrameType] = ...) -> None: ...
+    def set_trace(self, frame: FrameType | None = ...) -> None: ...
     def set_continue(self) -> None: ...
     def set_quit(self) -> None: ...
     def set_break(
-        self, filename: str, lineno: int, temporary: bool = ..., cond: Optional[str] = ..., funcname: Optional[str] = ...
+        self, filename: str, lineno: int, temporary: bool = ..., cond: str | None = ..., funcname: str | None = ...
     ) -> None: ...
     def clear_break(self, filename: str, lineno: int) -> None: ...
     def clear_bpbynumber(self, arg: SupportsInt) -> None: ...
@@ -56,43 +56,39 @@ class Bdb:
     def get_breaks(self, filename: str, lineno: int) -> List[Breakpoint]: ...
     def get_file_breaks(self, filename: str) -> List[Breakpoint]: ...
     def get_all_breaks(self) -> List[Breakpoint]: ...
-    def get_stack(self, f: Optional[FrameType], t: Optional[TracebackType]) -> Tuple[List[Tuple[FrameType, int]], int]: ...
+    def get_stack(self, f: FrameType | None, t: TracebackType | None) -> Tuple[List[Tuple[FrameType, int]], int]: ...
     def format_stack_entry(self, frame_lineno: int, lprefix: str = ...) -> str: ...
-    def run(
-        self, cmd: Union[str, CodeType], globals: Optional[Dict[str, Any]] = ..., locals: Optional[Mapping[str, Any]] = ...
-    ) -> None: ...
-    def runeval(self, expr: str, globals: Optional[Dict[str, Any]] = ..., locals: Optional[Mapping[str, Any]] = ...) -> None: ...
-    def runctx(
-        self, cmd: Union[str, CodeType], globals: Optional[Dict[str, Any]], locals: Optional[Mapping[str, Any]]
-    ) -> None: ...
-    def runcall(self, __func: Callable[..., _T], *args: Any, **kwds: Any) -> Optional[_T]: ...
+    def run(self, cmd: str | CodeType, globals: Dict[str, Any] | None = ..., locals: Mapping[str, Any] | None = ...) -> None: ...
+    def runeval(self, expr: str, globals: Dict[str, Any] | None = ..., locals: Mapping[str, Any] | None = ...) -> None: ...
+    def runctx(self, cmd: str | CodeType, globals: Dict[str, Any] | None, locals: Mapping[str, Any] | None) -> None: ...
+    def runcall(self, __func: Callable[..., _T], *args: Any, **kwds: Any) -> _T | None: ...
 
 class Breakpoint:
 
     next: int = ...
     bplist: Dict[Tuple[str, int], List[Breakpoint]] = ...
-    bpbynumber: List[Optional[Breakpoint]] = ...
+    bpbynumber: List[Breakpoint | None] = ...
 
-    funcname: Optional[str]
-    func_first_executable_line: Optional[int]
+    funcname: str | None
+    func_first_executable_line: int | None
     file: str
     line: int
     temporary: bool
-    cond: Optional[str]
+    cond: str | None
     enabled: bool
     ignore: int
     hits: int
     number: int
     def __init__(
-        self, file: str, line: int, temporary: bool = ..., cond: Optional[str] = ..., funcname: Optional[str] = ...
+        self, file: str, line: int, temporary: bool = ..., cond: str | None = ..., funcname: str | None = ...
     ) -> None: ...
     def deleteMe(self) -> None: ...
     def enable(self) -> None: ...
     def disable(self) -> None: ...
-    def bpprint(self, out: Optional[IO[str]] = ...) -> None: ...
+    def bpprint(self, out: IO[str] | None = ...) -> None: ...
     def bpformat(self) -> str: ...
     def __str__(self) -> str: ...
 
 def checkfuncname(b: Breakpoint, frame: FrameType) -> bool: ...
-def effective(file: str, line: int, frame: FrameType) -> Union[Tuple[Breakpoint, bool], Tuple[None, None]]: ...
+def effective(file: str, line: int, frame: FrameType) -> Tuple[Breakpoint, bool] | Tuple[None, None]: ...
 def set_trace() -> None: ...