How to merge two binary files into one?

[could ildg]

I want to merge file A and file B into a new file C,
All of them are binary.
How to do that?
thanks a lot.
-- 
鹦鹉聪明绝顶、搞笑之极，是人类的好朋友。
直到有一天，我才发觉，我是鹦鹉。
我是翻墙的鹦鹉。
--
http://mail.python.org/mailman/listinfo/python-list