There was one, but for some reason you trimmed it out of your quote:
The original code before you trimmed it was:
Look carefully, he was commenting on the contents of class Base (which does omit the line he suggests), not class B. Whether he's correct or not, I'm not wizardly enough to comment on.
-- Brian Beck Adventurer of the First Order -- http://mail.python.org/mailman/listinfo/python-list