[Zope-dev] Zope RPC

I'm using RPC. I've defined an identity function function: def foo( anarg ): return anarg When I call it with foo( 5 ) I get back (<mime...>, '5') Is it supposed to cast all arguments to string? When I call it with foo( (5,3) ) I get back a complicated HTML document where 5 is in the title and 3 is buried in the body. If I call it as foo((5,3,4)) it returns '(5,3,4)' Paul Prescod