code: def log_message(self, format, *args):
          
  
          sys.stderr.write("%s - - [%s] %s\n" %
                           (self.address_string(),
                            self.log_date_time_string(),
                            format%args))
docs: Log an arbitrary message.
  
          This is used by all other logging functions.  Override
          it if you have specific logging wishes.
  
          The first argument, FORMAT, is a format string for the
          message to be logged.  If the format string contains
          any % escapes requiring parameters, they should be
          specified as subsequent arguments (it's just like
          printf!).
  
          The client ip and current date/time are prefixed to
          every message.