title: Django filter with regex
body: <p>I want to write regex for django's model's  charField. That regex contains all letters and last character contains "/".</p>
  
  <p>Eg: "sequences/"</p>
  
  <p>I return regex as follows,</p>
  
  <pre><code>Model.objects.filter(location_path__iregex=r'^[a-zA-Z]/$')
  </code></pre>
  
  <p>It is not showing filter data.
  demo data for location_path is ['sequences/', 'abc/xyz/', 'abc/aaaa/aaa', 'pqr/']</p>
  
  <p>I want to filter data like 'sequences/', 'pqr/' which contains any character from a-z and field end with '/'</p>
  
  <p>Please give me the proper regex pattern and syntax</p>