concat和sum多索引熊猫系列

Question

Hi I have two pandas series

series1

Company      Product      Price
ABC          Apple        1234
             Orange       123
BCD          Apple        123
PCT          Pineapple    434
             Beef         884    

series2

Company      Product      Price
BCD          Orange       751
PCT          Pineapple    632
             Orange       165            

I would like to concat the two series into a series 3

Company      Product      Price
ABC          Apple        1234
             Orange       123
BCD          Apple        123
             Orange       751
PCT          Pineapple    1066
             Orange       165
             Beef         884

I have tried to use

series3 = pd.concat([series1,series2]).sum(level=1) 

However, it cannot produce what I want. Thank you in advance

Answer 1

You could try using groupby

series3 = pd.concat([df,df1]).groupby(level=[0,1]).sum()

# Output: 


Company   Product     Price
ABC        Apple      1234
           Orange     123
BCD        Apple      123
           Orange     751
PCT        Beef       884
           Orange     165
           Pineapple  1066