Learn Special Methods by Building a Vector Space - Step 23

Python
1

Tell us what’s happening:

I can’t figure this out. Please help me. i have tried everything i knew

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

# User Editable Region

    def __str__(self):
        return f'{i}={getattr(self, i)} for i in vars(self)'

# 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(v1.norm())
print(v2.norm())

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Challenge Information:

Learn Special Methods by Building a Vector Space - Step 23

2

Looking good. Do not return an f-string. You can start by deleting everything after return and then enter your generator function.

by replacing the string returned

This suggests you should get rid of the string.

3

ooooo, i figured it out thanks for the help

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