通过调用GetSystemPowerStatus Windows Api来判断AC Power是开启还是关闭状态。是一个python调用windows api的例子。

import os  import win32con  import sys  import time  from ctypes import *    class PowerClass(Structure):      _fields_ = [('ACLineStatus', c_byte),              ('BatteryFlag', c_byte),              ('BatteryLifePercent', c_byte),              ('Reserved1',c_byte),              ('BatteryLifeTime',c_ulong),              ('BatteryFullLifeTime',c_ulong)]    powerclass = PowerClass()    while True:      result = windll.kernel32.GetSystemPowerStatus( byref(powerclass) )        try:          state = int(powerclass.ACLineStatus)      except:          state = 0         if state == 1:          print 'Power is on...'      else:          print 'Power is off...\a'  #\a = bell sounds beep on computer        print 'Sleeping for 5 seconds...'      time.sleep(5)