First you'll import it:
	import SQLHandler

Then instantiate it:
	awsHost = "ec2-54-246-151-184.eu-west-1.compute.amazonaws.com"
	dbUsername =  "GTAdmin"
	password = "weakboi"
	database = "GrandTravel"

dbHandler = SQLHandler.dbHandler(dbUsername, password, awsHost, database)

Then use dbHandler for anything else:

results = dbHandler.query("SELECT * from TrainRoutes")