Question

我定义了一个叫做食物的类，其参数是卡路里，钠，钾，碳水化合物，纤维，糖，蛋白质，va，vc，钙和铁。然后我可以在这个课上创造食物，如英国黄瓜，蟹棒，海草和糙米。我希望在食品类中有一个用户定义的功能或方法，它允许我将这些食物组合在一起以创建一种名为California roll的新食物，并计算这种新食物的所有属性。

class Food:
def __init__(self, name, cal, fat, sod, pot, carbs, fiber, sugar, protein, va, vc, calcium, iron, unit):
    self.name = name
    self.cal = cal
    self.fat = fat
    self.sod = sod
    self.pot = pot
    self.carbs = carbs
    self.fiber = fiber
    self.sugar = sugar
    self.protein = protein
    self.va = va
    self.vc = vc
    self.calcium = calcium
    self.iron = iron

englishcucumber = Food('English Cucumber', 15, 0, 2, 147, 2, 0.5, 1.7, 0.7, 2, 5, 2, 2,1)
brownrice = Food("Brown Rice", 1440, 12, 80, 0, 312, 16, 8, 32, 0, 0, 0, 10, 4)
crabstick = Food("Crab Stick", 33, 0, 116.7, 0, 4.7, 1.3, 0, 4, 0, 0.33, 0.33, 0, 2)
seawead = Food("Sea Wead", 10, 0, 0, 0, 1, 1, 0, 1, 6, 4, 0, 3, 1)

我已经定义了一个对象，我该如何组合这些对象？有没有什么方法可以定义一个函数，其输入变量是对象而不仅仅是正常变量？

Answer 1

试试这个：

class Food:
    def __init__(self, name, cal, fat, sod, pot, carbs, fiber, sugar, protein, va, vc, calcium, iron, unit):
        self.name = name
        self.cal = cal
        self.fat = fat
        self.sod = sod
        self.pot = pot
        self.carbs = carbs
        self.fiber = fiber
        self.sugar = sugar
        self.protein = protein
        self.va = va
        self.vc = vc
        self.calcium = calcium
        self.iron = iron

    def combine(self, name, other):
        """Given a name and another class instance of food, return a food instance with all of the values combined."""
        r = Food(name, cal=self.cal+other.cal, fat=self.fat+other.fat, sod=self.sod+other.sod, pot=self.pot+other.pot, carbs=self.carbs+other.carbs, fiber=self.fiber+other.fiber, sugar=self.sugar+other.sugar, protein=self.protein+other.protein, va=self.va+other.va, vc=self.vc+other.vc, calcium=self.calcium+other.calcium, iron=self.iron+other.iron, unit=self.unit+other.unit)
        return r

在python中，如何将参数作为对象传递，而不是将变量组合在一起

1 个答案: