title: How to call a getter or setter in python?
body: <p>I have the following problem:</p>
  
  <pre><code>    self.myWrapper = wrapper.Wrapper
      self.myWrapper.set_entities(self.myWrapper, self.testEntity)
  </code></pre>
  
  <p>produces an error message, so does</p>
  
  <pre><code> self.myWrapper = wrapper.Wrapper   
   self.myWrapper.set_entities(self.myWrapper, self.testEntity)
  </code></pre>
  
  <p>The error message is: </p>
  
  <blockquote>
    <p>TypeError: unbound method set_entities() must be called with Wrapper
    instance as first argument (got type instance instance instead)</p>
  </blockquote>
  
  <p>What is wrong here? Where is the difference ob an object instance and a type instance?</p>