Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Python Object-Oriented Python Advanced Objects Proper Properties

Posted by Karen Shumate
Karen Shumate
13,579 Points

add a perimeter property that returns the perimeter of the rectangle (length * 2 + width * 2).

Whats wrong with my code?

Thanks.

rectangle.py 
class Rectangle:
    def __init__(self, width, length):
        self.width = width
        self.length = length
    @property
    def area(self):
        return self.width * self.length

     @property
    def perimeter(self):
        return self.length * 2 +  self.width * 2

2 Answers

Manish Kumar Meena
seal-mask
.a{fill-rule:evenodd;}techdegree
Manish Kumar Meena
Python Development Techdegree Student 2,594 Points
Manish Kumar Meena
.a{fill-rule:evenodd;}techdegree
Manish Kumar Meena
Python Development Techdegree Student 2,594 Points 
class Rectangle:
    def __init__(self, width, length):
        self.width = width
        self.length = length

    @property
    def area(self):
        return self.width*self.length

    @property
    def perimeter(self):
        return self.length * 2 +  self.width * 2
Steven Parker
Steven Parker
241,434 Points
Steven Parker
Steven Parker
241,434 Points

You just have an indentation error. The second "@property" line is indented one space too far.