I'm very new to Python. I want to use python to convert a string to and integer and return only a portion of the string. I have the following string type C000004N_37. I want to convert to int and return just the 37 of the string. C000004N_37 is a route with the following meaning. C standards for Corridor. the 6 numbers are the route number. The N is the roadbed direction so it can be "N", "S", "E" or "W". the underscore just creates a space and the 37 denotes the Reference Marker. The reference marker value could be anything from 1-670.