On Tue, 3 Mar 2015 14:33:01 +0100, Michael Adam wrote: > - pattern = '%s.%s' % (pattern, nums[0]) > - if len(nums) >= 2: > - pattern += '.%s' % nums[1] > + pattern = '%s.%s' % (pattern, nums[0]) > + f len(nums) >= 2: Looks like you dropped an 'i'. Cheers, David