数据帧:
id | a | b | c|||
---|---|---|---|---|---|
1 | 3.5 | 3 | |||
1 | 1 | 2 | 4 | ||
2 | 4.5 | 2 | 5 | ||
2 | 4 | 3 | <1>|||
3 | 3 | 1 | 3.5 | ||
3 | 2 | 1.5 | <2>|||
3 | 3 | 0 | 2 |
TRY:
mean = df.groupby('id', as_index=False).mean()