Pandas groupby stored in a new dataframe

Question

I have the following code:

import pandas as pd
df1 = pd.DataFrame({\'Counterparty\':[\'Bank\',\'Bank\',\'GSE\',\'PSE\'],
            \'Sub Cat\':[\'Tier1\',\'Sma         


        

Answer 1

Remove the double brackets around the 'Amount' and make them single brackets. You're telling it to only select one column.