class upgrades:
    def __init__(self, name, cost, level):
        self.name = name
        self.cost = cost
        self.level = level

    def buy(self, coins):
        if coins >= self.cost:
            coins -= self.cost
            self.level += 1
            print(f"{self.name} wurde auf Level {self.level} verbessert")
        else:
            print("Nicht genug Coins!")