prog11_7.py

class Cat:
    def info(self):
        return f"名前は{self.name}、色は{self.color}、体重{self.weight}kg"

    def eat(self, kg):
        self.weight += kg

    def show_info(self):
        print(self.info())

c1 = Cat()
c1.name, c1.color, c1.weight = "ショコラ", "白", 2.8
c2 = Cat()
c2.name, c2.color, c2.weight = "まころん", "茶虎", 3.2

c1.show_info()
c2.show_info()
print(f"{c1.name}にフードを食べさせます!")
c1.eat(0.5)
c1.show_info()

# プログラム11-7（メソッドshow_infoを追加）