code: def process_set_priority(process, priority):
      
      ret = AUTO_IT.AU3_ProcessSetPriority(LPCWSTR(process), INT(priority))
      if ret == 0:
          if error() == 1:
              raise AutoItError("set priority failed")
          elif error() == 2:
              raise AutoItError("unsupported priority class be used")
      return ret
docs: Changes the priority of a process
      :param process: The name or PID of the process to check.
      :param priority:A flag which determines what priority to set
          0 - Idle/Low
          1 - Below Normal (Not supported on Windows 95/98/ME)
          2 - Normal
          3 - Above Normal (Not supported on Windows 95/98/ME)
          4 - High
          5 - Realtime (Use with caution, may make the system unstable)
      :return: