title: Properties in Python
body: <p>whats the reason to use the variable the self._age?  A similar name that doesn't link to the already used self.age?</p>
  
  <pre><code>class newprops(object):
      def getage(self):
          return 40
      def setage(self, value):
          self._age = value
      age = property(getage, setage, None, None)
  </code></pre>