Create hexdump of a string - Python

hexdump.py

def hexdump(src, length=16):
    '''
    :param src: https://github.com/ActiveState/code/tree/master/recipes/Python/142812_Hex_dumper/
    
    '''
    FILTER=''.join([(len(repr(chr(x)))==3) and chr(x) or '.' for x in range(256)])
    N=0
    result=''
    while src:
       s,src = src[:length],src[length:]
       hexa = ' '.join(["%02X"%ord(x) for x in s])
       s = s.translate(FILTER)
       result += "%04X   %-*s   %s\n" % (N, length*3, hexa, s)
       N+=length
    return result