new and playing around to learn.

i want to use one attribute as a complement and automation of another attribute

class ShopItem:
    def __init__(self, name='<unnamed>', price=000.00, utility=0, description="<undefined>"):
        self.name = name
        self.price = price
        self.utility = utility
        self.description = description


apple = ShopItem("Apple",
                 1.2,
                 2,
                 f"A delicious apple.nRestores {self.utility} hp")

The Last Line

wanted the self.description to have utility inside
print(apple.description)
to print:
“Restores 2 hp”

i’ve tried:

...{utility}...

...{self.utility}...

...{apple.utility}...

...{ShopItem.utility}...

the IDE says

    ... line 12, in <module>
    f"A delicious apple.nRestores {self.utility}")
                                    ^^^^
NameError: name 'self' is not defined

the not defined changes to whatever is before the dot