@suriyasam16 I can see that there are two inverted commas in mybolt line of your code. It should be link
mybolt = Bolt(conf.API_KEY, conf.DEVICE_ID) and
sms = Sms(conf.SID, conf.AUTH_TOKEN, conf.TO_NUMBER, conf.FROM_NUMBER).
Also, make sure that you have imported your conf file in your code. Do let me know if you still face any issues.