a = range(256) I want to output the formated string to be: 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f ........................................................................ f0 f1 f2 f3 f4 f5 6 f7 f8 f9 fa fb fc fd fe ff How to do it?