title: How to get all the keys with the same highest value?
body: <p>If I have a dictionary with their corresponding frequency values:</p>
  <pre><code>numbers = {'a': 1, 'b': 4, 'c': 1, 'd': 3, 'e': 3}
  </code></pre>
  <p>To find the highest, what I know is:</p>
  <pre><code>mode = max(numbers, key=numbers.get)
  print mode
  </code></pre>
  <p>and that prints:</p>
  <pre><code>b
  </code></pre>
  <p>But if I have:</p>
  <pre><code>numbers = {'a': 1, 'b': 0, 'c': 1, 'd': 3, 'e': 3}
  </code></pre>
  <p>and apply the 'max' function above, the output is:</p>
  <pre><code>d
  </code></pre>
  <p>What I need is:</p>
  <pre><code>d,e
  </code></pre>
  <p>Or something similar, displaying both keys.</p>