title: Correlation between two data frames in Python
body: <p>I have a DataFrame with Job Area Profiles which look similar to this:</p>
  <p><a href="https://i.stack.imgur.com/JoLQd.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/JoLQd.png" alt="Job DF" /></a></p>
  <p>Now I have some user input, which creates an user DataFrame. This looks like this:</p>
  <p><a href="https://i.stack.imgur.com/lFnjv.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/lFnjv.png" alt="User DF" /></a></p>
  <p>Now, I want to determine the correlation between User XYZ's Profile and the profile for Cloud and Data Science.
  I've tried this:</p>
  <pre><code>job_df.corrwith(user_df)
  </code></pre>
  <p>But this is getting me NaN.
  How do I solve this?</p>