line_bot.py

# original: https://github.com/carpedm20/LINE/blob/master/examples/echobot.py

from line import LineClient, LineGroup, LineContact

try:
   client = LineClient("ID", "PASSWORD")
   print client.authToken #print authToken before error and use this login again
   #client = LineClient(authToken="AUTHTOKEN")
except:
   print "Login Failed"

while True:
   op_list = []

   for op in client.longPoll():
      op_list.append(op)

   for op in op_list:
      sender   = op[0]
      receiver = op[1]
      message  = op[2]

      msg = message.text
      #receiver.sendMessage("[%s] %s" % (sender.name, msg)) #this send message to ourselft that make infinity loop
      sender.sendMessage("[%s] %s" % (sender.name, msg)) #send message back to sender