title: Pandas: Split a string and then create a new column?
body: <p><a href="https://i.stack.imgur.com/1AVDn.png" rel="noreferrer"><img src="https://i.stack.imgur.com/1AVDn.png" alt="enter image description here"></a></p>
  
  <p>Let's say you have Col1.</p>
  
  <p>How do you create the new column 'Col2' after you split the string values in Col1 until you see _?</p>