title: How to index a Pandas dataframe with a list of secondary indexes?
body: <p>I'm trying to use the column <code>brand</code> as an index and add a secondary index from a list, how can I do that?</p>
  <pre><code>import pandas as pd   
  cars = {'brand': ['Honda Civic','Toyota Corolla'], 'price': [22000,25000]}  
  df = pd.DataFrame(cars, columns = ['brand', 'price'])
  print (df)
  
              brand  price
  0     Honda Civic  22000
  1  Toyota Corolla  25000
  </code></pre>
  <p>Pattern of the secondary index is taken from a list.</p>
  <pre><code>model = [['A', 'B'], ['C']]
  </code></pre>
  <p>Desired result:</p>
  <pre><code>                       price
           brand  model  
     Honda Civic      A  22000
                      B  22000
  Toyota Corolla      C  25000
  </code></pre>