Update Lib/traceback.py

Co-authored-by: Victor Stinner <vstinner@python.org>

Author: ZeroIntensity

Lib/traceback.py

@@ -138,7 +138,8 @@ def print_exception(exc, /, value=_sentinel, tb=_sentinel, limit=None, \
 
 
 def _print_exception_bltin(exc, file=None, /):
-    file = file or sys.stderr if sys.stderr is not None else sys.__stderr__
+    if file is None:
+        file = sys.stderr if sys.stderr is not None else sys.__stderr__
     colorize = _colorize.can_colorize(file=file)
     return print_exception(exc, limit=BUILTIN_EXCEPTION_LIMIT, file=file, colorize=colorize)