title: Masking dataframe by substring in column
body: <p>I have a column in my dataframe called tags</p>
  
  <pre><code>abc
  123489
  abcdefg
  qwerabcas
  sid abc 239
  8273491
  </code></pre>
  
  <p>Please give me a way for me to be able to display the rows where abc is present so the output will have rows</p>
  
  <pre><code>abc
  abcdefg
  qwerabcas
  sid abc 239
  </code></pre>