title: adding list in a new column in a pandas dataframe
body: <p>I would like to create a new column with a set of datas for each line of a specific column, creating a breakdown to the first level. e.g:</p>
  
  <pre><code> Level
     1
     2
     3
  
   Level  Breakdown
     1
             a
             b
             c
             d
     2   
             a
             b
             c
             d
     3
             a
             b
             c
             d 
  </code></pre>
  
  <p>any hints how do I code this breakdown on pandas dataframe?</p>
  
  <p>I understand that Multiindex must have an array to match with the 'Breakdown'. But the dataframe has more than 10 thousand registers, how can I combine my tuples with this amount of range?</p>
  
  <p>In fact, I've got a raw database that I have to rearrange like a schedule format. Hereunder, I can share a small sample:
  <a href="https://i.stack.imgur.com/8mRGA.png" rel="nofollow noreferrer">enter image description here</a></p>
  
  <p>So, I would like to rearrange the database in this format:
  <a href="https://i.stack.imgur.com/V8IQZ.png" rel="nofollow noreferrer">enter image description here</a></p>