title: Append a list to the first row and column of a pandas dataframe
body: <p>I have a 4300 x 4300 pandas dataframe (rows and columns) and want to add a list to the first rows and the first column. I don't know how to do so, without filling the dataframe completely with zeros…</p>
  
  <p>Example for old 4300 x 4300 dataframe (excerpt):</p>
  
  <p><a href="https://i.stack.imgur.com/ZnPZ8.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ZnPZ8.png" alt="enter image description here"></a></p>
  
  <p>Example of list to add:
  ["axis","output","group","plurality","record"]</p>
  
  <p>Example for new A x A dataframe:</p>
  
  <p><a href="https://i.stack.imgur.com/k8UJD.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/k8UJD.png" alt="enter image description here"></a></p>