> Your regex is not working correctly I guess, I don't even know why you
> are using a regex, something like this would work just fine:
>
> import sys
> nums = [float(line.split(' -')[1]) for line in open(sys.argv[1])]
> print 'min=', min(nums), 'max=', max(nums)
Sorry, that should be line.split() - didn't realise those were negative
numbers.