Closes #13807: Now checks for sys.stderr being there before writing to it.

diff --git a/Lib/logging/__init__.py b/Lib/logging/__init__.py
index dad69aebca3ca05cbaba64d69e528ed3ca990d4a..be775e8bb4961efa5e85d8edce6ef625b04e941c 100644 (file)
--- a/Lib/logging/__init__.py
+++ b/Lib/logging/__init__.py
@@ -794,7 +794,7 @@ class Handler(Filterer):
         You could, however, replace this with a custom handler if you wish.
         The record which was being processed is passed in to this method.
         """
-        if raiseExceptions:
+        if raiseExceptions and sys.stderr:  # see issue 13807
             ei = sys.exc_info()
             try:
                 traceback.print_exception(ei[0], ei[1], ei[2],