pandas sequential numbering within group
tmp = pd.DataFrame({'a':[1,1,2,2,3,1,2,3,1,3,1,2]})
tmp['sequential'] = tmp.groupby('a').cumcount()
tmp.sort_values('a')pandas sequential numbering within group
tmp = pd.DataFrame({'a':[1,1,2,2,3,1,2,3,1,3,1,2]})
tmp['sequential'] = tmp.groupby('a').cumcount()
tmp.sort_values('a')Copyright © 2021 Codeinu
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