Dataclasses

Lab Python Intermediate 20 points

Use @dataclass to create Item(name: str, price: float, qty: int = 1) with a method total(). Read items name price qty, print each item (dataclasses get a __repr__ for free) and then the grand total with 2 decimals.

Input

Line 1: n. Then n lines.

Output

n + 1 lines.

Example

Input

2
pen 1.5 4
book 12 1

Output

Item(name='pen', price=1.5, qty=4)
Item(name='book', price=12.0, qty=1)
18.00

Sample input available Sample output available

Editor

Python

Hints

@dataclass writes __init__, __repr__ and __eq__ from the annotated fields.

Solution explanation

Dataclasses remove the boilerplate from classes that mainly hold data.

Show solution

from dataclasses import dataclass


@dataclass
class Item:
    name: str
    price: float
    qty: int = 1

    def total(self):
        return self.price * self.qty


items = []
for _ in range(int(input())):
    name, price, qty = input().split()
    items.append(Item(name, float(price), int(qty)))
    print(items[-1])
print(f"{sum(i.total() for i in items):.2f}")

Output

Answer