Bug #1710295: exceptions are now new-style classes.

Doc/tut/tut.tex

@@ -3556,7 +3556,7 @@ as desired.
 ...    print 'x =', x
 ...    print 'y =', y
 ...
-<type 'instance'>
+<type 'exceptions.Exception'>
 ('spam', 'eggs')
 ('spam', 'eggs')
 x = spam