Python hex dump snippet

hexDump.py

#!/bin/env python

import sys
import string

while True:
        b = sys.stdin.read(16)
        if not b:
                break
        print "".join(map(lambda x: "%02x " % x, map(ord, b))) + " " + "".join(map(lambda x: x if x in string.printable else chr(0xA7), b)).replace('\t',' ')