Learn Special Methods by Building a Vector Space - Step 19

Python
1

Tell us what’s happening:

Dear Team,
why my prints line 19 and 20 do not pass the code? and indeed the these
print(v1.dict)
print(v2.dict)
pass the code?
I read the python vars() is used to retunr the value of the __dict_attribute
As usual probably I miss something here…sorry

Your code so far


class R2Vector:
    def __init__(self, *, x, y):
        self.x = x
        self.y = y
        
    def norm(self):
        return (self.x**2 + self.y**2)**0.5
        
    def __str__(self):
        return f'{self.x, self.y}'

class R3Vector(R2Vector):
    def __init__(self, *, x, y, z):
        super().__init__(x=x, y=y)
        self.z = z

# User Editable Region

v1 = R2Vector(x=2, y=3)
v2 = R3Vector(x=2, y=2, z=3)
print(vars(v1))
print(vars(v2))


# User Editable Region

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Challenge Information:

Learn Special Methods by Building a Vector Space - Step 19

2

and the output is the same for both couple of printing:
{‘x’: 2, ‘y’ : 3}
{‘x’ : 2, ‘y’ : 2, ‘z’ : 3}

3

Dot . onto the vectors and use __dict__

someVector.__dict__
4

yes, I used this one and passed the code. But also using the vars() I am getting the same output but the code doesn’t pass.
dict

5

This step is explicitly asking you to use __dict__ and tests are checking for that.

But yes, the result is the same.

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