title: vlookup equivalent to fill existing table using pandas
body: <h3>Scenario:</h3>
  <ul>
  <li>there are more than three pivot table in python</li>
  <li>one existing table in which i want to fill value as per row and and as per column from different pivot table</li>
  </ul>
  <p>I made sample in excel ,want to automate in python.
  (In python using pivot After making pivot column name changes)</p>
  <pre><code>Pivot1          Pivot2  
              
  Name Sum of English Average     Name    Sum of Maths Average
  Ni   7.25                         Ni    7.25
  Pi  11.25                         Pi    11.25
  Si  12.25                         Si    12.25
  Ti  17.25                         Ti    17.25
  Vi  9.75                          Vi    9.75
  Grand Total 57.75       Grand Total 57.75
      
      
  </code></pre>
  <p>Reqired table to fill</p>
  <pre><code>English Avg       Maths Avg     
  Ni      -----          ------
  Pi      ------         ------
  Si      ------         -------
  </code></pre>
  <p><img src="https://i.stack.imgur.com/VDTFu.png" alt="enter image description here" /></p>