ลูกค้าชื่อ อาร์ต และนามสกุล Turcotte มีกี่บัญชี?
How many accounts does the customer with first name Art and last name Turcotte have?
Accounts = pd.DataFrame(columns=['customer_id']); Customers = pd.DataFrame(columns=['customer_id', 'customer_first_name', 'customer_last_name'])
Accounts.loc[Accounts['customer_id'].isin(Customers.loc[(Customers['customer_first_name'] == 'Art') & (Customers['customer_last_name'] == 'Turcotte'), 'customer_id'])].shape[0]