#! /usr/bin/python
# Copyright 2016 Google Inc. All Rights Reserved.

"""Parse a serial number string.

Match on 4 character prefix, and 1 to 8 hex character suffix
Return the prefix and suffix concatenated.
"""
__author__ = 'sniderd@google.com (Duane Snider)'

import re
import sys

sn = sys.argv[1]

regex = re.compile(ur'^(\w{4})([0-9a-fA-F]{1,8})$')
rc = re.match(regex, sn)
if not rc:
  print 'sn__deadbeef'
  sys.exit(-1)

print '%s%s' % (rc.group(1), rc.group(2))