Log threading exceptions properly (#34789)

homeassistant/util/thread.py

@@ -0,0 +1,26 @@
+"""Threading util helpers."""
+import sys
+import threading
+from typing import Any
+
+
+def fix_threading_exception_logging() -> None:
+    """Fix threads passing uncaught exceptions to our exception hook.
+
+    https://bugs.python.org/issue1230540
+    Fixed in Python 3.8.
+    """
+    if sys.version_info[:2] >= (3, 8):
+        return
+
+    run_old = threading.Thread.run
+
+    def run(*args: Any, **kwargs: Any) -> None:
+        try:
+            run_old(*args, **kwargs)
+        except (KeyboardInterrupt, SystemExit):  # pylint: disable=try-except-raise
+            raise
+        except Exception:  # pylint: disable=broad-except
+            sys.excepthook(*sys.exc_info())
+
+    threading.Thread.run = run  # type: ignore