1
star_rating duration
Date 20170829 20170830 20170829 20170830
genre
Action 1038.1 1038.1 15917.0 16598.0
Adventure 595.0 595.0 9386.0 10113.0
Animation 490.7 490.7 5811.0 5989.0
Biography 596.9 596.9 9661.0 10002.0
Comedy 1211.7 1211.7 16616.0 16786.0
In[86]: df2.columns
Out[86]:
MultiIndex(levels=[['star_rating', 'duration'], [20170829, 20170830]],
labels=[[0, 0, 1, 1], [0, 1, 0, 1]],
names=[None, 'Date'])
大家好,我有上表DF2,我想插入一列的差异,这将是20170830一个简单的减法 - 20170829.将在多指标数据帧大熊猫计算列
star_rating duration
Date 20170829 20170830 Diff 20170829 20170830 Diff
genre
Action 1038.1 1038.1 0 15917 16598 681
Adventure 595 595 0 9386 10113 727
Animation 490.7 490.7 0 5811 5989 178
Biography 596.9 596.9 0 9661 10002 341
Comedy 1211.7 1211.7 0 16616 16786 170
它如果日期处于最高位置,那么我可以使用df2['diff'] = df2[20170830] - df2[20170829]
。
我是multiIndex新手,很感谢任何人有任何想法让我开始。提前致谢。
https://stackoverflow.com/questions/43238183/python-pandas-add-subtotal-on-each-lvl-of- multiindex-dataframe检查这一点 – Wen