title: How to get max value of few columns and creating a new column in dataframe
body: <p>I have a dataframe which looks like below:</p>
  
  <p><a href="https://i.stack.imgur.com/ZJqLV.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ZJqLV.png" alt="enter image description here"></a></p>
  
  <p>I need to iterate through item_1 to item_3 and then get the max value of the row and create a new column called item.</p>
  
  <p>output should look like below:</p>
  
  <p><a href="https://i.stack.imgur.com/uClBU.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/uClBU.png" alt="enter image description here"></a></p>
  
  <p>What function should we use here?</p>