更新时间:2022-12-10 07:38:36
Use the cumcount method after grouping by Gender
:
df = pd.DataFrame({'Gender':['Male','Male','Female','Female','Female']})
df['Occurrence'] = df.groupby('Gender').cumcount() + 1
print(df)
Gender Occurrence
0 Male 1
1 Male 2
2 Female 1
3 Female 2
4 Female 3
计数从0开始,所以我在其中添加了+ 1
.
Counts start with 0 so I added a + 1
there.