title: How can I change nanvalues in a pdDataframe
body: <p>I have a list of values that need to be in place of this NaNs how can I change them?</p>
  <p><a href="https://i.stack.imgur.com/G76cy.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/G76cy.png" alt="DF" /></a></p>