0411作业 面向对象

练习一：在终端输出如下信息

小明，10岁，男，上山去砍柴
小明，10岁，男，开车去东北
小明，10岁，男，最爱大保健
老李，90岁，男，上山去砍柴
老李，90岁，男，开车去东北
老李，90岁，男，最爱大保健

class Xiaoming:
    role = '小明'
    def __init__(self,name,age,sex):
        self.name = name
        self.age = age
        self.sex = sex
    def work(self):
        hobby = ["上山去砍柴","开车去东北","最爱大保健"]
        for i in hobby:
            print(self.name,self.age,self.sex,i)
class Laoli:
    role = '老李'
    def __init__(self, name, age, sex):
        self.name = name
        self.age = age
        self.sex = sex
    def work(self):
        hobby = ["上山去砍柴","开车去东北","最爱大保健"]
        for i in hobby:
            print(self.name,self.age,self.sex,i)
a = Xiaoming('小明','10岁','男')
b = Laoli('老李','90岁','男')
a.work()
b.work()
class Men:
    def __init__(self,name,age,sex):
        self.name = name
        self.age = age
        self.sex = sex
    def hobby(self):
        hobby = ["上山去砍柴", "开车去东北", "最爱大保健"]
        for i in hobby:
            print(('%s,%s岁,%s,%s')%(self.name,self.age,self.sex,i))
a = Men('小明',10,'男')
b = Men('老李',90,'男')
a.hobby()
b.hobby()

圆环的周长与面积

from math import pi
class Circle:
    def __init__(self,r):
        self.r = r
    def cal_area(self):
        return pi*self.r**2
    def cal_perimeter(self):
        return 2*pi*self.r
c1=Circle(9)
c2=Circle(5)
print(c1.cal_area() - c2.cal_area())
print(c1.cal_perimeter() + c2.cal_perimeter())