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

vsajip · vsajip · commit 889bb2969d00 · 2012-01-20T11:23:02.000Z
diff --git a/Lib/logging/__init__.py b/Lib/logging/__init__.py
@@ -721,7 +721,7 @@ def handleError(self, record):
         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], None, sys.stderr)
