title: how can I Filter single column in a dataframe on multiple values
body: <p>I have a dataframe and I would like to filter it by multiple values within a single column, how can I accomplish this? when I filter by a singular value I usually use <code>df_filtered = df[df['column'] == value]</code>, but that isn't working for the 61 values at least as I've tried it. Thank you. </p>
  
  <pre><code>     MRN  ... Result
  0  13556832  ...  400.0
  1  13556832  ...  400.0
  2  13556832  ...  400.0
  3  13556832  ...  392.0
  4  13556832  ...  400.0
  </code></pre>
  
  <p>here is a sample of the dataframe (there are about 100k rows, and I need to filter for the 61 MRN values that I have identified for a project. So ultimately I would like to have a separate df that includes all MRN values that I have identified as important. </p>
  
  <p>I am essentially looking for a solution that is similar to the .isin() operator except for 61 values, not 2 max</p>