[Python] Is there any performance difference between calling a local variable and calling an...

Here's the code I have:

elif line.mesg.startswith('^^'):
recog, score = pull_recog(line)
line.recog = recog
line.score = score

print recog + ' '*(20-len(recog)) + '%2.2f'%score


This question really comes down to how the compiler takes care of this:

Does the compiler optimize this code in some way that would make no difference between:

1. Calling the local variables recog and score
2. Calling the object's instance variables line.score and line.recog?

My initial instinct that using the local variables would be quicker, but I'm not getting good results from timeit so I can't really tell for sure.

This is within a for-loop, so optimization does actually matter in this case.

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