text: class Bank1Account(object):
      tax = 1.0
  
      def __init__(self, number):
          self.number = number
          self.__total = 0
  
      def deposit(self, value):
          self.__total += value
  
      def withdraw(self, value):
          self.__total -= value
          # self.__total -= 1
          self.__total -= type(self).tax
  
      def getTotal(self):
          return self.__total
  
  
  class Bank2Account(Bank1Account):
      tax = 2.0
  
      def __init__(self, number, cvv):
          super(Bank2Account, self).__init__(number)
          self.number = number
          self.cvv = cvv
  
      #def withdraw(self, value):
      #    self._Bank1Account__total -= value
      #    self._Bank1Account__total -= 2
  