title: Separate Columns Using Regex
body: <p>I have a DataFrame with a column titled "File Name" that contains lengthy strings that I need to break into different columns. </p>
  
  <pre><code>df = pd.DataFrame({'File Name':['92.00.88 / Z.89 / JK89Y3333 Test File Name', 
                                   '94.00.21 / W.22 / JK89Y3333 Sample Document Title Here', 
                                   '94.10.31 / Y.88 / JK89Y3333 File Document Name',
                                   'Phase 1',
                                   'Phase 2']}) 
  
  | File Name                                              |
  |--------------------------------------------------------|
  | 92.00.88 / Z.89 / JK89Y3333 Test File Name             |
  | 94.00.21 / W.22 / JK89Y3333 Sample Document Title Here |
  | 94.10.31 / Y.88 / JK89Y3333 File Document Name         |
  | Phase 1                                                |
  | Phase 2                                                |
  </code></pre>
  
  <p>This is what I need the DataFrame to look like: </p>
  
  <pre><code>| File Number | Site | Barcode   | Title                      | Phase   |
  |-------------|------|-----------|----------------------------|---------|
  | 92.00.88    | Z.89 | JK89Y3333 | Test File Name             |         |
  | 94.00.21    | W.22 | JK89Y3333 | Sample Document Title Here |         |
  | 94.10.31    | Y.88 | JK89Y3333 | File Document Name         |         |
  |             |      |           |                            | Phase 1 |
  |             |      |           |                            | Phase 2 |
  </code></pre>
  
  <p>I can't seem to figure out how to do this using RegEx. </p>