from object in Tuple[of Sets()]: - is giving me the whole Tuple back instead of just one Set

I'm starting to write an AI for a uni portfolio in Python.

The AI is for a game called Planet Wars, which is a clone of GalCon (Galactic Confusion).

It's in it's basic stage thus far. My goal is to write an AI which loosely follows Sun Tzu's the Art of War, as I interpret it for the game.

I'm kludging through, learning as I go, but for the life of me I can't figure out why line 92 gives me the whole of self._currentTactics instead of just one tactic at a time...

I'd love it if the lovely people around here could help me out.

Just the AI File:

http://pastebin.com/XXYiRzh7

The whole game's code(requires pygame):

https://www.dropbox.com/sh/mma5qwd2iv0i81d/mpemB7zlhT

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