why doesnt the following code work??

Question

class Vector2D:
def __init__(self, x, y):
self.x = x
self.y = y
def __add__(self, other, another):
return Vector2D(self.x + other.x + another.x, self.y + other.y + another.y)
first = Vector2D(5, 7)
second = Vector2D(3, 9)
third = Vector2D (1, 1)
result = first + second + third
print(result.x)
print(result.y)

Answer 1

Here is the working code.
https://code.sololearn.com/cGHEUrzp9ywg/?ref=app/

Answer 2

Because the __add__ magic method should have just two parameters, 'self' and 'other':
def __add__(self, other):
return Vector(self.x + other.x, self.y + other.y)
Even then the addition of the three vectors will work because,
adition is a binary operation.

Answer 3

got it, thnx