title: Difference between raising named and unnamed exception
body: <p>Is there a difference between the following?</p>
  
  <pre><code>try:
      &lt;some code&gt;
  except SomeException as err:
      raise err
  </code></pre>
  
  <hr>
  
  <pre><code>try:
      &lt;some code&gt;
  except SomeException:
      raise
  </code></pre>