title: Exception in python
body: <p>I'm very new to python so I have very simple doubt. Here is my code:</p>
  
  <pre><code>a=sri
  
  try:
      print a
  except Exception:
      print 'you have not put quotes for string'
  else:
      print 'dont know what error it is'
  </code></pre>
  
  <p>How to write a manual exception/error handling for this?</p>