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Recipe 502203 revision 1 

import os
import sys

PRINT = ' !"#$%&\'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~'

def main():
    try:
        show(file(sys.argv[1], 'rb').read())
    except:
        sys.stdout.write(os.path.basename(sys.argv[0]) + ' <filename>')

def show(string):
    for number, part in enumerate(string[index:index+16] for index in xrange(0, len(string), 16)):
        sys.stdout.write('%07X0 | %s| %s\n' % (number, hexit(part).ljust(48), clean(part)))

def hexit(string):
    return ' '.join('%02X' % ord(c) for c in string)

def clean(string):
    return ''.join(c in PRINT and c or '.' for c in string)

if __name__ == '__main__':
    main()

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