How to format a string from an array?

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  • Allen

    How to format a string from an array?

    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?

  • rocksportrocker

    #2
    Re: How to format a string from an array?

    On Jun 13, 11:11 am, Allen <pruyu.c...@gma il.comwrote:
    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?
    You can start with

    hex_list = [ ("0"+hex(i)[2:])[-2:] for i in a ]

    This statement generates a list [ "00", "01", ... "ff"].

    Now you only have to print this list.

    Greetings, Uwe

    Comment

    • Gerard Flanagan

      #3
      Re: How to format a string from an array?

      On Jun 13, 11:11 am, Allen <pruyu.c...@gma il.comwrote:
      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?
      a = range(256)

      for i in xrange(0, 256, 16):
      print ' '.join('%02x' % n for n in a[i:i+16])

      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
      20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f
      30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f
      40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f
      50 51 52 53 54 55 56 57 58 59 5a 5b 5c 5d 5e 5f
      60 61 62 63 64 65 66 67 68 69 6a 6b 6c 6d 6e 6f
      70 71 72 73 74 75 76 77 78 79 7a 7b 7c 7d 7e 7f
      80 81 82 83 84 85 86 87 88 89 8a 8b 8c 8d 8e 8f
      90 91 92 93 94 95 96 97 98 99 9a 9b 9c 9d 9e 9f
      a0 a1 a2 a3 a4 a5 a6 a7 a8 a9 aa ab ac ad ae af
      b0 b1 b2 b3 b4 b5 b6 b7 b8 b9 ba bb bc bd be bf
      c0 c1 c2 c3 c4 c5 c6 c7 c8 c9 ca cb cc cd ce cf
      d0 d1 d2 d3 d4 d5 d6 d7 d8 d9 da db dc dd de df
      e0 e1 e2 e3 e4 e5 e6 e7 e8 e9 ea eb ec ed ee ef
      f0 f1 f2 f3 f4 f5 f6 f7 f8 f9 fa fb fc fd fe ff

      Comment

      • Gerard Flanagan

        #4
        Re: How to format a string from an array?

        On Jun 13, 11:11 am, Allen <pruyu.c...@gma il.comwrote:
        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?
        a = range(256)

        import itertools as it

        for k, g in it.groupby(a, lambda x: x//16):
        print ' '.join('%02x' % n for n in g)

        Comment

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