bpo-45615: Add missing test for printing traceback for non-exception. Fix traceback.py (GH-30091)

1 files changed, 5 insertions, 1 deletions

diff --git a/Lib/traceback.py b/Lib/traceback.py
index b244750..05f1fff 100644
--- a/Lib/traceback.py
+++ b/Lib/traceback.py
@@ -98,7 +98,11 @@ def _parse_value_tb(exc, value, tb):
         raise ValueError("Both or neither of value and tb must be given")
     if value is tb is _sentinel:
         if exc is not None:
-            return exc, exc.__traceback__
+            if isinstance(exc, BaseException):
+                return exc, exc.__traceback__
+
+            raise TypeError(f'Exception expected for value, '
+                            f'{type(exc).__name__} found')
         else:
             return None, None
     return value, tb