title: python pandas exploding multiple varying length dataframe columns containing arrays
body: <p>I have a dataframe that contains 1 single array per column that i need to explode to multiple rows per column. the arrays are nested (twice) and varying length (6-12 arrays contained in each)
  I'm trying to either;</p>
  <ul>
  <li>explode the top level of each nested array or</li>
  <li>explode everything and have a multi-index</li>
  </ul>
  <p>example data:
  <a href="https://i.stack.imgur.com/sEz7a.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/sEz7a.png" alt="enter image description here" /></a></p>
  <p>I have tried varying methods found here on SO using the built in explode function, haven't been able to produce anything that</p>