Fix for pretty-printing builtin exceptions in Python 3.

IPython/lib/pretty.py

@@ -620,7 +620,7 def _function_pprint(obj, p, cycle):
 
 def _exception_pprint(obj, p, cycle):
     """Base pprint for all exceptions."""
-    if obj.__class__.__module__ == 'exceptions':
+    if obj.__class__.__module__ in ('exceptions', 'builtins'):
         name = obj.__class__.__name__
     else:
         name = '%s.%s' % (