[Tutor] my newbie program

[root]

hello everyone! i am trying again to learn python
and i have broken my script here. right now i am
just trying to make rooms and move through them.
any comments or direction would be much appreciated

class room:
    def __init__(self):
        self.desc=""
        self.exits=[]


room1=room()
room2=room()
room1.exits=[room2,0,0,0]

room1.desc="a big room"
room2.desc="an even bigger room"

class player:
    def __init__(self):
        self.location=room1
    def act(self):
        cmd = raw_input('>')
        if cmd == 'look':
            print self.location.desc
        if cmd == 'n':
            if self.location.exits[0] != 0:
                 self.location=self.location.exits[0]
            else:
                print "you can't go that way"
    
me=player()