title: Eval a string representation of tuples in python
body: <p>I currently have a column of string values which looks like this:</p>
  
  <pre><code>d = {'col1': '(100,200),(150,124),(135,137)'}
  </code></pre>
  
  <p>And I need to change this to float values to become this:</p>
  
  <pre><code>d = {'col1': [(100,200),(150,124),(135,137)]}
  </code></pre>
  
  <p>Any help would be much appreciated.</p>