title: Fetch a value of SQLalchemy instrumentedattribute
body: <p>How can I fetch the value of a <code>InstrumentedAttribute</code> object in SQLalchemy:</p>
  
  <pre><code>(Pdb) ResultLine.item_reference_1
  &lt;sqlalchemy.orm.attributes.InstrumentedAttribute object at 0x793dc90&gt;
  </code></pre>
  
  <p>The above statement prints me the sqlalchemy object.</p>
  
  <p>What I actually need is the value associated with it.</p>