df = pd.DataFrame(columns=['seats_2001', 'seats_2006', '_percentage_2001'])
There are communities listed that a percentage larger than 7.6 in 2001, but none of them has 2 seats listed in 2006.
seats_sum = df.loc[(df['seats_2006'] == 2) & (df['_percentage_2001'] > 7.6), 'seats_2001'].sum()