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curriculum/challenges/english/blocks/learn-special-methods-by-building-a-vector-space/65f93e54a9121571dcdd3e79.md

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--description--

The output is correct, repr is giving you the string required to instantiate the objects.

Now comment out both your print calls.

--hints--

You should comment out both your print() calls.

js
({ test: () => {
  assert.match(code, /#\s*print\s*\(\s*f('|")v1 = \{\s*v1\s*\}\1\s*,\s*f('|")\\nrepr = \{\s*repr\s*\(\s*v1\s*\)\s*\}\2\s*\)/);
  assert.match(code, /#\s*print\s*\(\s*f('|")v2 = \{\s*v2\s*\}\1\s*,\s*f('|")\\nrepr = \{\s*repr\s*\(\s*v2\s*\)\s*\}\2\s*\)/);
} })

--seed--

--seed-contents--

py
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})'

class R3Vector(R2Vector):
    def __init__(self, *, x, y, z):
        super().__init__(x=x, y=y)
        self.z = z
--fcc-editable-region--
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)}')
--fcc-editable-region--