Record BDFL opinion on exception-raising style

pep-0008.txt

@@ -546,6 +546,13 @@ Programming Recommendations
         class MessageError(Exception):
             """Base class for errors in the email package."""
 
+      When raising an exception, use "raise ValueError('message')"
+      instead of the older form "raise ValueError, 'message'".  The
+      paren-using form is preferred because when the exception
+      arguments are long or include string formatting, you don't need
+      to use line continuation characters thanks to the containing
+      parentheses.  The older form will be removed in Python 3000.
+
     - Use string methods instead of the string module unless
       backward-compatibility with versions earlier than Python 2.0 is
       important.  String methods are always much faster and share the