I have lines of data which I want to parse. The data looks like this:

a score=216 expect=1.05e-06
a score=180 expect=0.0394

What I want to do is to have a subroutine that parse them and return 2 values (score and expect) for each line.

However this function of mine doesn't seem to work:

def scoreEvalFromMaf(mafLines):
    for word in mafLines[0]:
        if word.startswith("score="):
            theScore = word.split('=')[1]
            theEval  = word.split('=')[2]
            return [theScore, theEval]
    raise Exception("encountered an alignment without a score")

Please advice what's the right way to do it?