[Python-checkins] r70554 - python/trunk/Lib/traceback.py

[benjamin.peterson]

Author: benjamin.peterson
Date: Mon Mar 23 22:25:15 2009
New Revision: 70554

Log:
complain when there's no last exception

Modified:
   python/trunk/Lib/traceback.py

Modified: python/trunk/Lib/traceback.py
==============================================================================
--- python/trunk/Lib/traceback.py	(original)
+++ python/trunk/Lib/traceback.py	Mon Mar 23 22:25:15 2009
@@ -241,6 +241,8 @@
 def print_last(limit=None, file=None):
     """This is a shorthand for 'print_exception(sys.last_type,
     sys.last_value, sys.last_traceback, limit, file)'."""
+    if not hasattr(sys, "last_type"):
+        raise ValueError("no last exception")
     if file is None:
         file = sys.stderr
     print_exception(sys.last_type, sys.last_value, sys.last_traceback,