title: How to get length of query result SqlAlchemy
body: <p>I have simple query using SqlAlchemy ORM:</p>
  
  <pre><code>query = DBsession.query(AssetsItem).filter_by(
      AssetsItem.id &gt; 10,
      AssetsItem.country = 'England'
  )
  </code></pre>
  
  <p>How can i get length of my query result. I want to know how much AssetsItem i would get by this query</p>