Inheritence


#1



https://www.codecademy.com/courses/python-intermediate-en-WL8e4/3/4?curriculum_id=4f89dab3d788890003000096#


Oops, try again. Failed to instantiate Equilateral, an error was thrown: 'Equilateral' object has no attribute 'angle3'


class Triangle(object):
    def __init__(self,angle1,angle2,angle3):
        self.angle1=angle1
        self.angle2=angle2
        self.angle3=angle3
    number_of_sides=3
    def check_angles(self):
        if(self.angle1+self.angle2+self.angle3==180):
            return True
        else:
            return False
my_triangle=Triangle(30,60,90)
print my_triangle.number_of_sides
print my_triangle.check_angles()

class Equilateral(Triangle):
    angle=60
    def __init__(self):
        self.angle=self.angle1=self.angle2=self.angle3


#2

in init of Equilateral you need to create self.angle1 (and self.angle2 and self.angle3 so we don't have to supply 3 times 60 when we create a class instance and so we can call check_angles

so self.angle1 should be at the left side of the equal sign


#3

oops...u are right. Thank you so much


#4

#5

you're welcome :slight_smile: