day18-面向对象作业

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:
       """一个狗的类"""
   
       def __init__(self, name, variety, gender='公'):
           self.name = name
           self.gender = gender
           self.variety = variety
   
       def __repr__(self):
           return str(self.__dict__)
   
       def cry_dog(self):
           """叫唤名字，狗就会旺旺旺"""
           return f"{self.name},我旺不旺\n旺旺旺"
   
   
   dog = Dog('旺财', '中华田园犬')
   print(dog)
   
   print(dog.cry_dog())
   
   

   人类拥有属性：姓名、年龄、狗 拥有方法：遛狗

   class Person:
       """人的类"""
       def __init__(self, name, age):
           self.name = name
           self.age = age
           self.dog1 = dog
   
       def __repr__(self):
           return str(self.__dict__)
   
       def walk_the_dog(self):
           """遛狗"""
           return f'{dog.name} 速度过来'
   
   
   person = Person('睿睿', '28')
   print(person)
   print(person.walk_the_dog())
   
   

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 Rectangle:
       """一个矩形类"""
       def __init__(self, long, wide):
           self.long = long
           self.wide = wide
   
       def perimeter(self):
           """求周长"""
           return f'周长为：{(self.wide + self.long) * 2}'
   
       def area(self):
           """求面积"""
           return f'面积为：{self.long * self.wide}'
   
   
   rectangle = Rectangle(10, 10)
   print(rectangle.perimeter())
   print(rectangle.area())
   
   

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 Coordinates:
       """定义一个二维点类"""
       def __init__(self, x, y):
           self.x = x
           self.y = y
   
       def distance(self):
           """求x到y的距离"""
           return f'求x到y的距离为：{(self.x ** 2 + self.y ** 2) ** 0.5:.2f}'
   
   
   coordinates = Coordinates(-1234, 5678)
   print(coordinates.distance())
   

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:
       """一个圆类"""
       pi = 3.141592653
   
       def __init__(self, r, x_label):
           self.r = r
           self.x_label = x_label
   
       def area(self):
           """ 计算圆面积"""
           return '半径为：{self.r}时，面积：{P.pi * self.r ** 2 :.2f}'
   
       def perimeter(self):
           """ 计算圆周长"""
           return '半径为：{self.r}时，周长：{2 * P.pi * self.r:.2f}'
   
       def exterior_contact(self, r1, x1, y1):
           """判断当前圆和另一个圆是否外切"""
           if ((self.x_label[0] - x1) ** 2 + (self.x_label[-1] - y1) ** 2) ** 0.5 == self.r + r1:
               return '是外切'
           else:
               return '非外切'
   
   
   c1 = Circle(61, [1, 1])
   print(c1.exterior_contact(60, 1, 122))
   
   
   

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 LineSegment:
       """一个线段类"""
       def __init__(self, origin, destination):
           self.origin = origin
           self.destination = destination
   
       def length(self):
           return self.destination - self.origin
   
   
   lineSegment = LineSegment(2345, 4567890)
   print(lineSegment.length())
   

标签：__,return,self,作业,dog,面向对象,print,day18,def
来源： https://blog.csdn.net/eeffve/article/details/122095399