None is returned

Hi
In the example code below - why is "None" returned - print(rectangle.describe("this is a new rectangle")) - and how do I get to print out the result "this is a new rectangle"

Regards

class Shape:
   
    def __init__(self,x,y):
        self.x = x
        self.y = y
        self.description = "not yet described"
        self.author = "no text yet"
       
    def area(self):
        return self.x * self.y
   
    def perimeter(self):
        return 2 * self.x + 2 * self.y
       
    def describe(self,text):
        self.description = text
       
    def author_name(self,text):
        self.author = text
   
    def scaleSize(self,scale):
        self.x = self.x * scale
        self.y = self.y * scale
       
rectangle = Shape(100,45)
print(rectangle.area())
print(rectangle.perimeter())
print(rectangle.describe("this is a new rectangle"))
rectangle.scaleSize(0.5)
print(rectangle.area())
PHIL SawyerAsked:
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Mark BradyPrincipal Data EngineerCommented:
Looking at your code for the scaleSize() function you have self.scale but in the function you are referring to scale. Remove self. from the parameter and it should work.
0
Walter RitzelSenior Software EngineerCommented:
your problem is that describr function does not return anything. make it return self.description if you want
1

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PHIL SawyerAuthor Commented:
Hi
Thanks Walter - this works.
Mark - can you show mw what you mean as the scal function seems to work.
Regards
0
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Mark BradyPrincipal Data EngineerCommented:
Hi Phil - My bad, I did not have my glasses on and thought the parameters for that function were self.scale. I miss-read the comma. Walter is correct.
0
PHIL SawyerAuthor Commented:
Thanks everybody
0
PHIL SawyerAuthor Commented:
Thanks
0
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