with open('skattekart.txt', 'r') as steps:
    steplist = [step.split()[1::2] for step in steps]
    ns = sum([int(dist)*(('north' in dir) - ('south' in dir)) for dist, dir in steplist])
    we = sum([int(dist)*(('west' in dir) - ('east' in dir)) for dist, dir in steplist])
    print("{}, {}".format(ns, we))