title: How can I remove all instances of an element from a list in Python?
body: <p>Lets say I have a list <code>a</code>:</p>
  
  <pre><code>a = [[1, 1], [2, 2], [1, 1], [3, 3], [1, 1]]
  </code></pre>
  
  <p>Is there a function that removes all instances of <code>[1, 1]</code>?</p>