python module to discover my IP address using checkip.dyn.com

I need a python module that will get my current IP address from services like [login to view URL] (heres the api: [login to view URL] ) Please also find and implement one more such service (there are plenty of them I am sure) a method should return my advertised IP address as a string that is found by an external service mentioned a check should be performed that the string returned is really IP address (by regex match) in case first service fails - try next one