Object Oriented Python for area of triangle

Question

Write a Python Program(with class concepts) to find the area of the triangle using the below formula.

area = (s*(s-a)*(s-b)*(s-c)) ** 0.5

Function to take the length of the sides of triangle from user should be defined in the parent class and function to calculate the area should be defined in subclass.

in the image the code that i have tried. but getting error. please help.``

`

class poly:
    def _init_(self,a,b,c):
        self.a = float(a)
        self.b = float(b)
        self.c = float(c)
a= input("a=")
b= input("b=")
c= input("c=")

class triangle(poly):
    def get_area(self):
        s = (a + b + c) / 2
        return (s*(s-a)*(s-b)*(s-c)) ** 0.5        

t = triangle(a,b,c)
print("area : {}".format(t.area()))

`

Answer 1

class poly:
    def __init__(self,a,b,c):
        self.a = float(a)
        self.b = float(b)
        self.c = float(c)
a= int(input("a="))
b= int(input("b="))
c= int(input("c="))

class triangle(poly):
    def __init__(self,a,b,c):
        super().__init__(a,b,c)

    def get_area(self):
        s = (a + b + c) / 2
        return (s*(s-a)*(s-b)*(s-c)) ** 0.5        

t = triangle(a,b,c)
print("area : {}".format(t.get_area()))

I found a lot of mistakes. There are two underscores (_), not one, in the first __init__. Python 3's input function returns a string, so you must typecast it to an int before performing any arithmetic operations to avoid receiving a TypeError. Third, you failed to invoke the init method to make a superclass reference. Finally, you wrote get area rather than area in the function.