Question (Thai):  ผู้ที่ซื้อ Canon EOS เป็นผู้ดำเนินการตั๋วจำนวนเท่าใด
Question (English): How many ticket ID were conducted by the person who purchased Canon EOS?
Table: customer
Pandas: df[df['Product_Purchased'] == 'Canon EOS'].shape[0]