title: How can I parse a .txt with a delimiter that has multiple characters into a pandas df?
body: <p>I have a <em>large</em> dataset that I'd like to analyse in python with pandas. It's all contained in a .txt but the separator is +++$+++. How can I parse this? </p>
  
  <pre><code>import pandas as pd
  df = pd.read_csv('filename.txt', sep='+++$+++', header=None)
  </code></pre>
  
  <p>These two lines bring up this error:</p>
  
  <pre><code>sre_constants.error: nothing to repeat
  </code></pre>