### Tell us what’s happening:

I can obviously see that I don’t know what I am doing here. The test is too wordy. I will appreciate a hint because I am not understanding theirs.

### 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)))
def __repr__(self):
arg_list = [f'{key}={val}' for key, val in vars(self).items()]
args = ', '.join(arg_list)
return f'{self.__class__.__name__}({args})'
# User Editable Region
def __add__(self, other):
if type(self) != type(other):
return NotImplemented
kwargs = {i:i+other 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(f'v1 = {v1}')
print(f'v2 = {v2}')
```

### Your browser information:

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### Challenge Information:

Learn Special Methods by Building a Vector Space - Step 42