Learn Special Methods by Building a Vector Space - Step 26

Python
1

Tell us what’s happening:

Hi, can anyone help me with this step? I am very confused .

Your code so far


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

    def norm(self):
        return sum(val**2 for val in self.__dict__.values())**0.5

    def __str__(self):
        return str(tuple(getattr(self, i) for i in vars(self)))

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(f'v1 = {R2Vector(x = 2, y = 3)}')
print(f'v2 = {R3Vector(x=2, y=2, z=3)}')

# User Editable Region

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Challenge Information:

Learn Special Methods by Building a Vector Space - Step 26

2

Hello!

You are on the right path: Just replace the values with the variables they were assigned to.

3

Sorry, still don’t understand. Can you help explain more specifically?

4

If you write the above inside the curly brackets of the f-string, you create another object. You already have v1.
The same is true for v2