Pandas Groupby Sum
df.groupby(['Fruit','Name'])['Number'].sum()
Trained Tuna
df.groupby(['Fruit','Name'])['Number'].sum()df.groupby(['A','C'], as_index=False)['B'].sum()
df['new_column'] = df.groupby(['group_column'])['sum_column'].transform('sum')df.groupby(['Fiscal_Year','Billing_Group'])['CHARGE_AMT'].sum()