title: Exceptions catching performance in python
body: <p>I know exceptions in python are fast when it comes to the <code>try</code> but that it may be expensive when it comes to the catch.</p>
  
  <p>Does this mean that:</p>
  
  <pre class="lang-py prettyprint-override"><code>try:
     some code
  except MyException:
     pass
  </code></pre>
  
  <p>is faster than this ?</p>
  
  <pre class="lang-py prettyprint-override"><code>try:
     some code
  except MyException as e:
     pass
  </code></pre>