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Answers and rating deltas for
I want to append an csv file using python pandas to add an array as new column
| Author | Votes | Δ |
|---|---|---|
| João P C Bertoldo | 1 | +4.03 |
| Olzhas Arystanov | 0 | -1.88 |
| niraj | 0 | -0.27 |
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