如何将值传递给需要类的函数

class Person:
    def __init__(self, name, age):
        self.name = name
        self.age = age

person = Person("John", 25)

class Car:
    def drive(self, speed):
        print("Driving at speed:", speed)

car = Car()
car.drive(80)

class Circle:
    def __init__(self):
        self.radius = 0

    def set_radius(self, radius):
        self.radius = radius

circle = Circle()
circle.set_radius(5)

class MathUtil:
    PI = 3.14

    @classmethod
    def multiply(cls, a, b):
        return a * b

MathUtil.PI  # 访问类变量PI
MathUtil.multiply(5, 10)  # 调用类方法multiply