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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def process_message(self,msg,sock):
    "serialize and deserialize"
    command=msg[0]
    try: f={'GET':self.get,'SET':self.set,'SUBSCRIBE':self.sub,'PUBLISH':self.pub,
      'PING':self.ping,'GETSET':self.getset,'EXPIRE':self.expire,'DEL':self.delete}[command]
    except KeyError: print msg; raise
    args=msg[1:]
    try: return f(sock,*args) if command in self.SOCK_COMMANDS else f(*args)
    except Exception as e:
      print e
      print msg
      return '-ERROR\r\n'