title: Create dict with non-string indexes(?)
body: <p>I was wondering if is possible to create a dict like this:</p>
  
  <pre><code>{index:'value',index2:'value2'}
  </code></pre>
  
  <p>Instead:</p>
  
  <pre><code>{'index':'value','index2':'value2'}
  </code></pre>
  
  <p>Is this possible?</p>
  
  <p>There's a way at least?
  Just want to know, I've been seen this in:</p>
  
  <pre><code>$.ajax{
      ...
      data: {index:'value',index2:'value2'},
      ...
  }
  </code></pre>
  
  <p>Indexes should be created before?
  Indexes are "constants" pre-created?</p>
  
  <p>If it cannot be on Python, can you tell me why?</p>