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    Answers and rating deltas for
    How can I get all the unique categories within my dataframe using python?
| Author | Votes | Δ | 
|---|---|---|
| eliu | 4 | +3.69 | 
| Gabriel Romero | 3 | +0.70 | 
| LocoGris | 1 | -0.42 | 
Last visited: Sep 4, 2019, 3:46:46 PM