OOP "Weapon Class" for text-based game.

oop_weapons.py

class Weapon(object):
    def __init__(self, name):
        self.name = name
        self.parent = None
    def destroy(self):
        if self.parent:
            self.parent.weaponDestroyed()

def WeaponRef():
    def getWeapon(self):
        return self._weapon
    def setWeapon(self, newWeapon):
        if newWeapon == None: #ensure that this is a valid weapon
            delWeapon(self)
            return
        if hasattr(self, "weapon"): #remove old weapon's reference to us
            self._weapon.parent = None
        self._weapon = newWeapon
        newWeapon.parent = self
    def delWeapon(self):
        if hasattr(self, "weapon"):
            self._weapon.parent = None
            del self._weapon
    return property(getWeapon, setWeapon, delWeapon)

class Parent(object):
    weapon = WeaponRef()
    def __init__(self, name, weapon=None):
        self.name = name
        self.weapon = weapon
    def weaponDestroyed(self):
        print "%s deleting reference to %s" %(self.name, self.weapon.name)
        del self.weapon


w1 = Weapon("weapon 1")
w2 = Weapon("weapon 2")
w3 = Weapon("weapon 3")
p1 = Parent("parent 1", w1)
p2 = Parent("parent 2")

w1.destroy()

p2.weapon = w2
w2.destroy()

p2.weapon = w3
w3.destroy()