定义一个抽象类Shape，在抽象类Shape中定义求面积getArea()和周长getPerimeter()的抽象方法。分别定义继承抽象类Shape的3个子类即Triangle、Rectang

class Shape:def __init__(self,areas=0,primeters=0):self.areas=areasself.Primeters=primetersdef GetPrimeter(self):passdef GetArea(self):passclass Triangle(Shape):def __init__(self,said1=0,said2=0,said3

HGTCYSSJ

10061人浏览 · 2022-01-18 11:04:44

HGTCYSSJ · 2022-01-18 11:04:44 发布

class Shape:
    def __init__(self,areas=0,primeters=0):
       self.areas=areas
       self.Primeters=primeters
    def GetPrimeter(self):
        pass
    def GetArea(self):
       pass
class Triangle(Shape):
    def __init__(self,said1=0,said2=0,said3=0,areas=0,primeters=0):
        super().__init__(areas,primeters)
        self.said1=said1
        self.said2=said2
        self.said3=said3
    def GetPrimeter(self):
        self.Primeters=(self.said1+self.said2+self.said3)
    def GetArea(self):
        s = (self.said1 + self.said2 + self.said3) / 2
        self.areas = ((s * (s - self.said1)) * (s - self.said2) * (s - self.said3))**0.5
class Rectangle(Shape):
    def __init__(self,length=0,width=0,areas=0,primeters=0):
        super().__init__(areas,primeters)
        self.length=length
        self.width=width
    def GetPrimeter(self):
        self.Primeters=(self.length+self.width)*2
    def GetArea(self):
        self.areas=self.length*self.width
class Circle(Shape):
    def __init__(self,r=0,areas=0,primeters=0):
        super().__init__(areas,primeters)
        self.r=r
    def GetPrimeter(self):
        self.Primeters=2*3.14*self.r
    def GetArea(self):
        self.areas=3.14*self.r*self.r
a1=Triangle(3,4,5)
a1.GetPrimeter()
a1.GetArea()
print("三角形的周长为：",a1.Primeters)
print("三角形的面积为：",a1.areas)

a2=Rectangle(4,5)
a2.GetPrimeter()
a2.GetArea()
print("矩形的周长为：",a2.Primeters)
print("矩形的面积为：",a2.areas)

a3=Circle(4)
a3.GetPrimeter()
a3.GetArea()
print("圆的周长为：",a3.Primeters)
print("圆的面积为：",a3.areas)