Learn Special Methods by Building a Vector Space - Step 28

Python
1

Tell us what’s happening:

I am missing something, I need a clue to what i am missing.

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 vars(self).values())**0.5

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

# User Editable Region

    def __repr__(self):
        arg_list = [f"{key} = {val}" for key, val in vars(self).items()]

# User Editable Region

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

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

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Challenge Information:

Learn Special Methods by Building a Vector Space - Step 28

2

no cause for alarm, it just did not like the space betfore and after the = sign in the f-string. Self resolved.

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