title: Help re.search python length
body: <p>Is it possible to read the length of re.search's output?</p>
  
  <p>For example:</p>
  
  <pre><code>import re
  
  list=['lost','post','cross','help','cost']
  
  for i in range(len(list)):
    output = re.search('os', list[i])
  </code></pre>
  
  <p>Can I read output length?</p>