title: Mapping dictionary to pandas dataframe with lists
body: <p>I have a dictionary where I would like to map it to a large pandas dataframe. The issue is the column I would like to use to map is wrapped in double quotes and sometimes there are one or more items in that column.</p>
  <p>original</p>
  <pre><code>dict_id = {
     'College1': ['1256511'],
     'College2': ['1200582'],
     'College3': ['1256618'], 
     'College10': ['1256621']
  }
  
  
     id1  id2            college_name
  0   01   01    &quot;College1, College2&quot;
  1   01   02  &quot;College10, College12&quot;
  2   01   03             &quot;College19&quot;
  </code></pre>
  <p>desired</p>
  <pre><code>id1 id2    college_name              id_college
  01   01     &quot;College1, College2&quot;    1256511, 1200582
  01   02     &quot;College10, College12&quot;  1256621
  01   03     &quot;College19&quot;
  </code></pre>