code: def prettykey(self, key):
          
          f = list(self.decodekey(key))
          f[0] = f[0].decode('utf-8')
          if len(f) > 2 and type(f[2]) == bytes:
              f[2] = f[2].decode('utf-8')
  
          if f[0] == '.':
              if len(f) == 2:
                  return "%s%16x" % tuple(f)
              elif len(f) == 3:
                  return "%s%16x %s" % tuple(f)
              elif len(f) == 4:
                  if f[2] == 'H' and type(f[3]) in (str, bytes):
                      f[3] = f[3].decode('utf-8')
                      return "%s%16x %s '%s'" % tuple(f)
                  elif type(f[3]) in (int, long):
                      return "%s%16x %s %x" % tuple(f)
                  else:
                      f[3] = hexdump(f[3])
                      return "%s%16x %s %s" % tuple(f)
          elif f[0] in ('N', 'n', '$'):
              if type(f[1]) in (int, long):
                  return "%s %x %16x" % tuple(f)
              else:
                  return "%s'%s'" % tuple(f)
          elif f[0] == '-':
              return "%s %x" % tuple(f)
  
          return hexdump(key)
docs: returns the key in a readable format.