title: python .count for multidimensional arrays (list of lists)
body: <p>How would I count the number of occurrences of some value in a multidimensional array made with nested lists? as in, when looking for 'foobar' in the following list:</p>
  
  <pre><code>list = [['foobar', 'a', 'b'], ['x', 'c'], ['y', 'd', 'e', 'foobar'], ['z', 'f']]
  </code></pre>
  
  <p>it should return <code>2</code>.</p>
  
  <p>(yes I am aware that I could write a loop that just searches through all of it, but I dislike that solution as it is rather time-consuming, (to write and during runtime))</p>
  
  <p>.count maybe?</p>