title: Python: defining total sum of certain object attributes within Class?
body: <p>Simplified sample code:</p>
  
  <pre><code>    class Numbers(object):
  
      def __init__(self, value):
      self.value = value
  
  
  instance1 = Numbers(100)
  instance2 = Numbers(120)
  instance3 = Numbers(76)
  </code></pre>
  
  <p>I would like to set a variable within the class (or otherwise) that would be set to the total sum of all the values (100 + 120 + 76 in this case). Is it possible to do with a class variable?</p>