提取SMS正文并在条件中传递（Python）

这是我用来检查未读邮件的类

 def CheckUnreadMsgs(ser)
  print "Check for new messages...\n"
  ser.write("AT\r")
  time.sleep(3)
  line =  ser.read(size = 64)
  print line
  sen.write('AT+CMGL="REC UNREAD"\r')
  time.sleep(3)
  response = ser.read(size =200)
  print response
  return response

这是主要节目

print "Opening communications serial...\n"
ser = serial.Serial('/dev/ttyUSB1',115200,timeout=1)
ser.open()
#check continous loop
print "Starting main loop\n"

while True:
  message = CheckUnreadMsgs(ser)
  a = message.find('\n') + 63
  b = len(message)
  msg = message[a:b]
  print msg
  if (msg == "on")
    print "Power ON Commanded!\n"

我已经提取了SMS的主体，但是如果msg==on，变量似乎没有通过条件。你能帮我解决这个问题吗？

这是我用正则表达式给出的答案

---

这是菲律宾的电话国家代码。

print "Opening communications serial...\n"
ser = serial.Serial('/dev/ttyUSB1',115200,timeout=1)
ser.open()
#check continous loop
print "Starting main loop\n"

while True:
  message = CheckUnreadMsgs(ser)
  a = message.find('\n') + 63
  b = len(message)
  msg = message[a:b]
  m = re.search("(pow.*)",msg)
  if m:
      mm = (m.group(1))
      if "on" in mm:
         print "Power On"
      elif "off" in mm:
         print "Power Off"