def activation_key_expired(self):
        expiration_date = datetime.timedelta(
            days=settings.ACCOUNT_ACTIVATION_DAYS)
        return self.activation_key == self.ACTIVATED or \
            (self.user.date_joined +
                expiration_date <= datetime.datetime.now())
Determine whether this ``RegistrationProfile``'s activation
dataset/ETHPy150Open zorna/zorna/zorna/account/models.py/UserProfile.activation_key_expired