小编Dan*_*Dan的帖子

如何爆炸pandas数据框？

输入 df:

所需输出 df:

+----------------+------+-----+------+
|level_2         | date | val | num  | 
+----------------+------+-----+------+
| name_1a        | 2020 |  1  | null |
| name_1b        | 2019 |  2  | null |
| name_1b        | 2020 |  3  | null |
| name_10000_xyz | 2018 |  4  | str  |
| name_10000_xyz | 2019 |  5  | null |
| name_10000_xyz | 2020 |  6  | str  |
+------------------------------------+

重现输入 df：

import pandas as pd
pd.set_option('display.max_colwidth', None)
data={'level_2':{1:'name_1a',3:'name_1b',5:'name_10000_xyz'},'value':{1:[{'date':'2020','val':1}],3:[{'date':'2019','val':2},{'date':'2020','val':3}],5:[{'date':'2018','val':4,'num':'str'},{'date':'2019','val':5},{'date':'2020','val':6,'num':'str'}]}}
df …