pandas sum multiple columns groupby
df.groupby(['col1','col2']).agg({'col3':'sum','col4':'sum'}).reset_index()
pandas sum multiple columns groupby
df.groupby(['col1','col2']).agg({'col3':'sum','col4':'sum'}).reset_index()
how to add the sum of multiple columns into another column in a dataframe
print(df)
Apples Bananas Grapes Kiwis
0 2.0 3.0 NaN 1.0
1 1.0 3.0 7.0 NaN
2 NaN NaN 2.0 3.0
df['Fruit Total']=df.iloc[:,-4:].sum(axis=1)
print(df)
Apples Bananas Grapes Kiwis Fruit Total
0 2.0 3.0 NaN 1.0 6.0
1 1.0 3.0 7.0 NaN 11.0
2 NaN NaN 2.0 3.0 5.0
sum two columns pandas
sum_column = df["col1"] + df["col2"]
pandas sum multiple columns groupby
#UPDATED (June 2020): Introduced in Pandas 0.25.0,
#Pandas has added new groupby behavior “named aggregation” and tuples,
#for naming the output columns when applying multiple aggregation functions
#to specific columns.
df.groupby(
['col1','col2']
).agg(
sum_col3 = ('col3','sum'),
sum_col4 = ('col4','sum'),
).reset_index()
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