title: Print only odd dictionary keys and their items
body: <p>I have the following dictionary and I need to print only the ones with odd numbers (1, 3 ...). How would I go about doing that? </p>
  
  <pre><code>zen = {
      1: 'Beautiful is better than ugly.',
      2: 'Explicit is better than implicit.',
      3: 'Simple is better than complex.',
      4: 'Complex is better than complicated.',
      5: 'Flat is better than nested.',
      6: 'Sparse is better than dense.',
      7: 'Readability counts.',
      8: 'Special cases aren't special enough to the rules.',
      9: 'Although practicality beats purity.',
     10: 'Errors should never pass silently.'
     }
  </code></pre>
  
  <p>So far I have:</p>
  
  <pre><code>for c in zen:
  print (c , zen[c][:])
  </code></pre>