Updates:
Status: Pending
Comment #1 on issue 1329 by pekka.klarck: Allow "from <module> import
<Library>" for Library imports
http://code.google.com/p/robotframework/issues/detail?id=1329
It sounds to me that what you are trying to do is best done in a custom test library. Could you give an example where this would be useful in test data?
