tests/regrtest_data/dataclasses_pyreverse/__init__.py


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from dataclasses import dataclass


@dataclass
class InventoryItem:
    """Class for keeping track of an item in inventory."""

    name: str
    unit_price: float
    quantity_on_hand: int = 0

    def total_cost(self) -> float:
        return self.unit_price * self.quantity_on_hand