title: Pandas - Convert strings in a list to integers using a dictionary and sum values
body: <p>I have a df with lists as cell values:</p>
  <pre><code>    team_id             results
          262     [v, v, e, v, e] 
          263     [e, v, v, d, e]
  </code></pre>
  <p>And I have a dictionary:</p>
  <pre><code>convert_dict = {'v':3, 'e':1, 'd':0}
  </code></pre>
  <hr />
  <p>Now I would like to convert every string value inside the list to its correspondent dict value, add all values and end up with:</p>
  <pre><code>    team_id     results
          262          11 
          263          10
  </code></pre>
  <hr />
  <p>For the conversion, I have tried:</p>
  <pre><code>df['results'] = df['results'].map(lambda x: convert_dict[x])
  </code></pre>
  <hr />
  <p>Any ideas?</p>