# Learn Special Methods by Building a Vector Space - Step 34

### Tell us what’s happening:

how does this and why does this not work ?? i dont understand do i need to implement the dot method and how do i implement it if yes

``````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})'

def __getattribute__(self, attr):
return 'calling __getattribute__'

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}', f'\nrepr = {repr(v1)}')
# print(f'v2 = {v2}', f'\nrepr = {repr(v2)}')

# User Editable Region

print (getattr(v1,"x"))

# User Editable Region

``````

User Agent is: `Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36`

### Challenge Information:

Learn Special Methods by Building a Vector Space - Step 34

Now, print the result of accessing the `x` attribute of `v1` both with
the dot operator and ✗
the `getattr()` built-in function. ✓

You need two print calls.

Here is an article on dot notation you may find helpful.

Happy coding