runtimequestion 273 Data Models & Typing · easy
A CSV catalogue into dataclasses
A supplier sends its catalogue as CSV text. Write a dataclass Product with fields sku, name, price and stock, whose __post_init__ upper-cases and strips the SKU, strips the name, and converts price to float and stock to int. Then write parse_catalogue(text), which reads the CSV (header sku,name,price,stock) into a list of Products and raises ValueError if a SKU appears twice.
Dataclass
Product with sku: str, name: str, price: float, stock: int; __post_init__ tidies and convertsFunction
parse_catalogue(text) → list of Product, in file orderRaises
ValueError for a SKU that appears twice (after tidying)Hint
csv.DictReader(io.StringIO(text)) reads CSV from a text