title: matplotlib remove whitespace between plot and y axis
body: <p>How can I remove the whitespace here?</p>
  
  <p><a href="https://i.stack.imgur.com/VtIf9.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/VtIf9.png" alt="enter image description here"></a></p>
  
  <p>Many thanks!</p>