Django: override User.get_profile()

original_get_profile = User.get_profile
def get_profile(self):
    if getattr(settings, 'AUTH_PROFILE_MODULE', None) != 'profiles.Profile':
        return original_get_profile(self)
    if not hasattr(self, '_profile_cache'):
        self._profile_cache = self.profile
        self.profile.user = self
    return self._profile_cache
User.get_profile = get_profile