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pandas 将索引值相加的方法

2023-09-05 16:53:05 471

如下所示：

s1=pd.Series([1,2,3,4],index=['a','b','c','d'])
s2=pd.Series([10,20,30,40],index=['a','b','c','d'])
prints1+s2

a11
b22
c33
d44
dtype:int64

s1=pd.Series([1,2,3,4],index=['a','b','c','d'])
s2=pd.Series([10,20,30,40],index=['b','d','a','c'])
prints1+s2

a31
b12
c43
d24
dtype:int64

s1=pd.Series([1,2,3,4],index=['a','b','c','d'])
s2=pd.Series([10,20,30,40],index=['c','d','e','f'])
prints1+s2

aNaN
bNaN
c13.0
d24.0
eNaN
fNaN
dtype:float64

s1=pd.Series([1,2,3,4],index=['a','b','c','d'])
s2=pd.Series([10,20,30,40],index=['e','f','g','h'])
prints1+s2

aNaN
bNaN
cNaN
dNaN
eNaN
fNaN
gNaN
hNaN
dtype:float64

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