title: Add and subtract values between objects
body: <p>how can I add and subtract values between two objects? I've got a task and I need to make some kind bank accounts as an objects. And transfer money between them.</p>
  
  <pre><code>class Account():
  def __init__(self, name, balance, number):
      self.name = name
      self.balance = balance
      self.number = number
  def transfer(self, amount):
      self.amount = amount
      if self.balance &gt;= amount:
          self.balance = self.balance - amount
      else:
          print("Sorry but you do not have enough funds on your account")
  
  def add(self, add):
      self.add = add
      self.balance = self.balance + add
  
  def show(self):
      print("Hello", self.name, "your current balance is:", self.balance)
  acc_1 = Account("Darren William", 2000.50, 3694586)
  acc_2 = Account("Jamie Lanister", 7500.34, 3687756)
  
  acc_1.show()
  acc_1.transfer(300.89)
  acc_1.show()
  acc_1.add(500.47)
  acc_1.show()
  </code></pre>
  
  <p>So right now I did methods to add and subtract x amount of money from one object. But how can I connect it between account. For an example if I subtract from acc_1 100 add 100 to acc_2.</p>