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Answers and rating deltas for

How to split column in pandas to get null in first column if

Author Votes Δ
Vaishali 3 +0.59
Scott Boston 3 +0.57
anky 1 -0.74
Statistic Dean 1 -0.12
Alok Bhatnagar 0 -3.29
Last visited: May 11, 2019, 11:16:05 PM