hm.. Sometime, PyDev say \"Unresolved import error\". In my environment
Python2.6.6 Eclipse3.7 PyDev2.2.2
Errors are.
You get an unresolved import if the required module cannot be found. Modules are searched for in the current working directory and the directories listed in sys.path. Your python cannot find the modules pycassa and tweepy it appears.
Might want to check this: http://klaith.wordpress.com/2009/06/12/pydev-unresolved-import-errors/