[Zope] How to get authentiedcated user name in pythong method?

How can I do that just as <dtml-var "AUTHENTICATED_USER.getUserName()"> in dtml? I don't want to pass AUTHENTICATED_user as a parameter. A hint please. cheers Dirksen __________________________________________________ Do You Yahoo!? Yahoo! Shopping - Thousands of Stores. Millions of Products. http://shopping.yahoo.com/