lowing
        print(real.parse_string('3. 1416')) # -> ['3', '.', '1416']

        real = Combine(Word(nums) + '.' + Word(nums))
        print(real.parse_string('3.1416')) # -> ['3.1416']
        # no match when there are internal spaces
        print(real.parse_string('3. 1416')) # -> Exception: Expected W:(0123...)
    rn