1. 建立一個(gè)汽車類Auto，包括輪胎個(gè)數(shù)移国，汽車顏色，車身重量道伟，速度等屬性迹缀，并通過(guò)不同的構(gòu)造方法創(chuàng)建實(shí)例。

至少要求 汽車能夠加速 減速 停車蜜徽。 再定義一個(gè)小汽車類CarAuto 繼承Auto 并添加空調(diào)祝懂、CD屬性，并且重新實(shí)現(xiàn)方法覆蓋加速拘鞋、減速的方法

import math
class Auto:
    wheels = 4

    def __init__(self, color, weight, speed=0):
        self.color = color
        self.weight = weight
        self.speed = speed

    def speed_up(self):
        for i in range(5):
            print("正在加速砚蓬，當(dāng)前時(shí)速%dkm/s" % (self.speed + int(i)))

    def speed_down(self):
        for i in range(5):
            print("正在減速，當(dāng)前時(shí)速%dkm/s" % (self.speed - int(i)))

    @staticmethod
    def parking():
        print('停車~~~~~~~~~~')

class CarAuto(Auto):

    def __init__(self, color, weight, speed, air_condition, cd_player):
        super().__init__(color, weight, speed)
        self.air_condition = air_condition
        self.cd_player = cd_player

    def speed_up(self):
        for i in range(5):
            print("正在加速掐禁，當(dāng)前時(shí)速%dkm/s" % (self.speed + 3*int(i)))

    def speed_down(self):
        for i in range(5):
            print("正在減速怜械，當(dāng)前時(shí)速%dkm/s" % (self.speed - 3*int(i)))


car1 = CarAuto('黑色', '3T', 90, '空調(diào)', 'BOSE')
print(car1.__dict__)
car1.speed_up()
print('==============================================')
car1.speed_down()
car1.parking()

2. 創(chuàng)建一個(gè)Person類，添加一個(gè)類字段用來(lái)統(tǒng)計(jì)Perosn類的對(duì)象的個(gè)數(shù)

class Person:
    num = 0

    @classmethod
    def count(cls):
        cls.num += 1
        return cls.num


p1 = Person()
print('建立的對(duì)象個(gè)數(shù)%d個(gè)' % p1.count())
p2 = Person()
print('建立的對(duì)象個(gè)數(shù)%d個(gè)' % p2.count())

3. 創(chuàng)建一個(gè)動(dòng)物類傅事，擁有屬性：性別缕允、年齡、顏色蹭越、類型 障本，要求打印這個(gè)類的對(duì)象的時(shí)候以'/XXX的對(duì)象: 性別-? 年齡-? 顏色-? 類型-?/' 的形式來(lái)打印

class Animals:
    def __init__(self, gender, age, color, type):
        self.gender = gender
        self.age = age
        self.color = color
        self.type = type

    def print_animals(self):
        print('性別-%s 年齡-%d 顏色-%s 類型-%s' % (self.gender, self.age, self.color, self.type))


animals1 = Animals('女', 3, 'black', '豹子')
animals1.print_animals()

4. 寫(xiě)一個(gè)圓類， 擁有屬性半徑响鹃、面積和周長(zhǎng)驾霜；要求獲取面積和周長(zhǎng)的時(shí)候的時(shí)候可以根據(jù)半徑的值

把對(duì)應(yīng)的值取到。但是給面積和周長(zhǎng)賦值的時(shí)候买置，程序直接崩潰粪糙，并且提示改屬性不能賦值

class ReadError(Exception):
    def __str__(self):
        print('該數(shù)據(jù)不能修改！７尴睢Ｈ馗浴３俏琛！寞酿！')


class Circle:

    def __init__(self, radius):
        self.radius = radius
        self._area = 0
        self._perimeter = 0

    @property
    def area(self):
        return math.pi*self.radius**2

    @property
    def perimeter(self):
        return 2*math.pi*self.radius

    @area.setter
    def area(self, value):
        raise ReadError

    @perimeter.setter
    def perimeter(self, value):
        raise ReadError


c1 = Circle(6)
print(c1.area)
print(c1.perimeter)
c1.area = 1000
# print(c1.area)  # 該數(shù)據(jù)不能修改＜叶帷！７サ＠觥！惨好！