game.py

import pickle
class Game(object):
    def __init__(self):
        self.experience = 0
        self.health = 0
        self.loadedFromDisk = False
    def give_xp(self, given_xp):
        self.experience += given_xp
    def save_variables(self):
        with open('game.dump', 'wb') as fh:
            pickle.dump({'xp' : self.experience, 'hp' : self.health}, fh)
    def load_variables(self):
        if not self.loadedFromDisk:
            with open('game.dump', 'rb') as fh:
                data = pickle.load(fh)
                self.experience = data['xp']
                self.hp = data['hp']
             self.loadedFromDisk = True

gamehandle = Game()