Capstone 1: Sales Report

Generate a sales report from the data below.

sales_data = [
    {"product": "Laptop", "category": "Electronics", "price": 1000, "qty": 5},
    {"product": "Phone", "category": "Electronics", "price": 500, "qty": 10},
    {"product": "Desk", "category": "Furniture", "price": 300, "qty": 8},
    {"product": "Chair", "category": "Furniture", "price": 150, "qty": 12}
]

Calculate and print total revenue per category.

Output format:

Electronics: 10000
Furniture: 4200

Revenue = price × qty