title: String to list, python
body: <p>Let's say I have something like this in a file: </p>
  
  <pre><code>[[(A,B), (B,C)],[(x,y), (z,v)]]
  </code></pre>
  
  <p>I want this as a python list of lists. How do I do that? </p>
  
  <p>In the end, I would like to be able to iterate through the rows and the columns of this array, and get each pair of adjacent values to compare them. </p>