[英]Operations on repeated index in pandas
P d
A 3 2
A 3 3
A 1 1
A 1 1
B 6 9
B 3 9
B 1 9
C 5 1
C 2 1
I have scv file that is full of similar data indixed with repeated a , b , c ....... etc , has columns labeled price , data and some other labels, how to calculate the sum of all the numbers in the price column that are indexed with every single index alone , and repeat the process for other all indexes , without knowing all the indexes ? 我有一个scv文件,里面充满了重复的a,b,c .......等类似数据,其中的列标记为price,data和一些其他标签,如何计算价格中所有数字的总和仅对每个索引都建立索引的列,并在不知道所有索引的情况下对其他所有索引重复该过程?
For example : The price of A =8 The price of C = 7 例如:A的价格= 8 C的价格= 7
按索引分组
df.groupby(level=0).P.sum()
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