pandas sequential numbering within group

Depressed Dog answered on September 30, 2020 Popularity 3/10 Helpfulness 3/10

answer pandas sequential numbering within group

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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')

Popularity 3/10 Helpfulness 3/10 Language python

Source: Grepper

Tags: group pandas python

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Contributed on Sep 30 2020

Depressed Dog

0 Answers Avg Quality 2/10

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