title: Compare nested lists in python and output the missing item in the list
body: <p>I am trying to compare a list of names that each contain a list of fruits and output the fruit that is missing.</p>
  <p>Below is code snippet from the original script.  I basically create a list of names and a list of fruits, then I append the fruit list to the name list.</p>
  <p>In python how can be compare the fruit lists for each name?</p>
  <p><strong>Code snippet</strong></p>
  <pre><code>namelist = []
  namelist.append(users_row[7])
  fruitlist = []
  fruitlist.append(users_row[4])
  namelist.append((list(fruitlist), fruitlist))
  print(fruitlist)
  </code></pre>
  <p><strong>Current Output</strong></p>
  <pre><code>['John', ([['Apple', 'Orange', 'Pear', 'Grapes']])]
  ['Amy', ([['Apple', 'Orange', 'Pear', 'Grapes', 'Mango']])]
  ['Peter', ([['Apple', 'Orange', 'Grapes']])]
  </code></pre>
  <p><strong>Required Output</strong></p>
  <pre><code>John,Mango
  Amy
  Peter,Pear,Mango
  </code></pre>