title: Counting the number of True Booleans in a Python List
body: <p>I have a list of Booleans:</p>
  
  <pre><code>[True, True, False, False, False, True]
  </code></pre>
  
  <p>and I am looking for a way to count the number of <code>True</code> in the list (so in the example above, I want the return to be <code>3</code>.)  I have found examples of looking for the number of occurrences of specific elements, but is there a more efficient way to do it since I'm working with Booleans? I'm thinking of something analogous to <code>all</code> or <code>any</code>.</p>