在GraphLab/SFrame中,相关命令是unstack
和unpack
。
import sframe #or import graphlab
sf = sframe.SFrame({'TransID':[1, 1, 1, 2, 2],
'SKUID':[31, 32, 33, 31, 34],
'COUNT': [1, 2, 1, 2, -1]})
sf2 = sf.unstack(['SKUID', 'COUNT'], new_column_name='dict_counts')
out = sf2.unpack('dict_counts', column_name_prefix='')
缺失值可以通过栏填写:
for c in out.column_names():
out[c] = out[c].fillna(0)
out.print_rows()
+---------+----+----+----+----+
| TransID | 31 | 32 | 33 | 34 |
+---------+----+----+----+----+
| 1 | 1 | 2 | 1 | 0 |
| 2 | 2 | 0 | 0 | -1 |
+---------+----+----+----+----+
@阿尔斯兰谢谢你的回复。如果有效,请考虑通过点击投票旁边的勾号来接受解决方案 – akrun