title: Pythonic way to get the greatest value with the same index from different lists
body: <p>I have a dict of lists like the following:</p>
  
  <pre><code>{
      'FR-8_20190502_MD_Case1': [11595, 8250, 13023, 7223],
      'FR-8_20190505_MD_Case1': [11595, 8250, 13023, 7418],
      'FR-8_20190507_MD_Case1': [11595, 8250, 13023, 7223],
      'FR-8_20190509_MD_Case1': [11595, 8250, 13023, 7384],
      'FR-8_20190508_MD_Case1': [12948, 8250, 13023, 7223],
      'FR-8_20190506_MD_Case1': [12056, 8250, 13023, 7223]
  }
  </code></pre>
  
  <p>And I would like to have a list of the greatest values of each index of these lists, for example:</p>
  
  <pre><code>[12948, 8250, 13023, 7418]
  </code></pre>
  
  <p>Here is what I have so far, it works but I am pretty sure it can be improved: (<code>ima_sizes</code> is my dict of lists)</p>
  
  <pre><code>max_sizes = [0, 0, 0, 0]
  for k, v in ima_sizes.items():
      for i in range(4):
          if v[i] &gt; max_sizes[i]:
              max_sizes[i] = v[i]
  </code></pre>
  
  <p>Is there a more pythonic way to achieve that?</p>