Delete tkinter._ExceptionReportingCallback (python#10689)

Co-authored-by: Alex Waygood <[email protected]>

stdlib/tkinter/__init__.pyi

@@ -6,7 +6,7 @@ from enum import Enum
 from tkinter.constants import *
 from tkinter.font import _FontDescription
 from types import TracebackType
-from typing import Any, Generic, NamedTuple, Protocol, TypeVar, overload, type_check_only
+from typing import Any, Generic, NamedTuple, TypeVar, overload, type_check_only
 from typing_extensions import Literal, TypeAlias, TypedDict
 
 if sys.version_info >= (3, 9):
@@ -720,9 +720,6 @@ class Wm:
     def wm_withdraw(self) -> None: ...
     withdraw = wm_withdraw
 
-class _ExceptionReportingCallback(Protocol):
-    def __call__(self, __exc: type[BaseException], __val: BaseException, __tb: TracebackType | None) -> object: ...
-
 class Tk(Misc, Wm):
     master: None
     def __init__(
@@ -764,7 +761,7 @@ class Tk(Misc, Wm):
     config = configure
     def destroy(self) -> None: ...
     def readprofile(self, baseName: str, className: str) -> None: ...
-    report_callback_exception: _ExceptionReportingCallback
+    report_callback_exception: Callable[[type[BaseException], BaseException, TracebackType | None], object]
     # Tk has __getattr__ so that tk_instance.foo falls back to tk_instance.tk.foo
     # Please keep in sync with _tkinter.TkappType.
     # Some methods are intentionally missing because they are inherited from Misc instead.

test_cases/stdlib/check_tkinter.py

@@ -0,0 +1,14 @@
+from __future__ import annotations
+
+import tkinter
+import traceback
+import types
+
+
+def custom_handler(exc: type[BaseException], val: BaseException, tb: types.TracebackType | None) -> None:
+    print("oh no")
+
+
+root = tkinter.Tk()
+root.report_callback_exception = traceback.print_exception
+root.report_callback_exception = custom_handler