def __init__(self, cust_id, checking_total_amount):
    Account.__init__(self, cust_id)
    self.checking_total_amount = checking_total_amount

    def grab_from_savings(self):
    moved_amount = 0
    moved_amount.move_to_checking()
    self.checking_total_amount += moved_amount.move_to_checking()

    return self.checking_total_amount

def __init__(self, cust_id, savings_total_amount):
    Account.__init__(self, cust_id)
    self.savings_total_amount = savings_total_amount

    def move_to_checking(self, amount_to_move):
    if amount_to_move <= self.savings_total_amount:
        self.savings_total_amount -= amount_to_move
        return amount_to_move
    else:
        return "insufficient funds!"