- 搜标题
- 搜题干
- 搜选项
单项选择题
老伍按以下格式生成数据： import pandas as pd a=pd.Series([4,3,2,1],index=["a","b","c","b"]) b=pd.Series([6,7,8,9],index=["b","c","a","d"]) a+b 请问输出结果为：
A.0
B.0
C.0
D.0
E.0
F.0
G.0
H.0
I.0
J.0
K.0
L.0
M.0
N.0
B.0
C.0
D.0
E.0
F.0
G.0
H.0
I.0
J.0
K.0
L.0
M.0
N.0
