title: Convert a columns of string to list in pandas
body: <p>I have a problem with the type of one of my column in a pandas dataframe. Basically the column is saved in a csv file as a string, and I wanna use it as a tuple to be able to convert it in a list of numbers. Following there is a very simple csv:</p>
  
  <pre><code>ID,LABELS
  1,"(1.0,2.0,2.0,3.0,3.0,1.0,4.0)"
  2,"(1.0,2.0,2.0,3.0,3.0,1.0,4.0)"
  </code></pre>
  
  <p>If a load it with the function "read_csv" I get a list of strings. I have tried to convert to a list, but I get the list version of a string:</p>
  
  <pre><code>df.LABELS.apply(lambda x: list(x))
  </code></pre>
  
  <p>returns:</p>
  
  <pre><code>['(','1','.','0',.,.,.,.,.,'4','.','0',')']
  </code></pre>
  
  <p>Any idea on how to be able to do it?</p>
  
  <p>Thank you.</p>