class Player():
    def __init__(self, name):
        self.name = name
        self.inventory = []
    def say_name(self):
        print self.name
    def add_to_inventory(self, object):
        self.inventory += [object]
    def show_inventory(self):
        for obj in self.inventory:
            print 'You have a %s' % obj

class World():
    def __init__(self):
        self.turn = 2
        self.day = True
    def do_turn(self):
        self.turn -= 1
        if self.turn == 0:
            self.change_status()
    def change_status(self):
        if bool(self.day) == True:
            self.day = False
        else:
            self.day = True
        self.turn = 2

thom = Player("thom")
thom.add_to_inventory('thingy')
thom.show_inventory()