Python Day13 面向对象基础练习

1. 定义一个狗类和一个人类：

   狗拥有属性：姓名、性别和品种 拥有方法：叫唤

class Dog:
    def __init__(self, name, gender, breed):
        self.name = name
        self.gender = gender
        self.breed = breed

    def get_bark(self):
        return '汪汪汪'

d1 = Dog('黑虎', '男', '中华田园犬')
print(d1.name, d1.get_bark())

黑虎 汪汪汪

人类拥有属性：姓名、年龄、狗 拥有方法：遛狗

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

    def walk_dog(self):
        return '自在惬意'


p1 = Person('Ziv', '20', '黑虎')
print(p1.name, p1.walk_dog())

Ziv 自在惬意

2. 定义一个矩形类，拥有属性：长、宽 拥有方法：求周长、求面积

class Ractangle:
    def __init__(self, lenth, width):
        self.lenth = lenth
        self.width = width

    def get_area(self):
        return self.lenth * self.width

    def get_perimeter(self):
        return 2 * self.lenth * self.width

    def __repr__(self):
        return print(f'面积为{self.get_area()},周长为{self.get_perimeter()}')


R1 = Ractangle(8, 4)
print(R1.get_area(), R1.get_perimeter())

32 64

3. 定义一个二维点类，拥有属性：x坐标、y坐标 拥有方法：求当前点到另外一个点的距离

class Coordinate_axis:
    def __init__(self, x, y):
        self.x = x
        self.y = y

    def get_xdistance(self):
        return abs(self.x)

    def get_ydistance(self):
        return abs(self.y)

    def __repr__(self):
        return print(self.get_xdistance(), self.get_ydistance())


C1 = Coordinate_axis(-4, 5)
print(C1.get_xdistance(), C1.get_ydistance())

4 5

4. 定义一个圆类，拥有属性：半径、圆心 拥有方法：求圆的周长和面积、判断当前圆和另一个圆是否外切

class Circle:
    pi = 3.1415926

    def __init__(self, radius, center, radius2, center2):
        # self.pi = 3.1415926
        self.radius = radius
        self.center = center
        self.radius2 = radius2
        self.center2 = center2

    def get_area(self):
        return Circle.pi * self.radius ** 2, Circle.pi * self.radius2 ** 2

    def get_perimeter(self):
        return 2 * Circle.pi * self.radius, 2 * Circle.pi * self.radius2

    def get_ex_contact(self):
        if abs(self.radius) + abs(self.center) == abs(self.radius2) + abs(self.center2):
            return print('外切')
        else:
            return print('不外切')

    def __repr__(self):
        return f'圆的面积是{self.get_area()}，周长是{self.get_perimeter()}', f'圆2的面积是{self.get_area()}，周长是{self.get_perimeter()}, 两个圆{self.get_ex_contact()}'

5. 定义一个线段类，拥有属性：起点和终点， 拥有方法：获取线段的长度

class Line:
    def __init__(self, start, end):
        self.start = start
        self.end = end

    def get_sedistance(self):
        return abs(self.start) + abs(self.end)

    def __repr__(self):
        return print(f'两点的距离为{self.get_sedistance()}')

L1 = Line(-9, 8)
print(L1.get_sedistance)

两点的距离为17

6. 写一个斗地主游戏类（根据生活经验添加类的内容）