I have been trying to understand this for the past 5 days. But couldn't.. i mean i never get even one percent of pythons

Question

dunders and operator overloading... a little help could be appreciated and thankful.
class Vector2D:
def __init__(self, x, y):
self.x = x
self.y = y
def __add__(self, other):
return Vector2D(self.x + other.x, self.y + other.y)
first = Vector2D(5, 7)
second = Vector2D(3, 9)
result = first + second
print(result.x)
print(result.y)

Answer 1

The code created a class whose name is "Vector2D" that contains 2 variables x and y and a method for addition that adds x's together and y's together then the code created 2 variables which are named "first" and "second" and assigned different values to each of them then added them using the addition method that is explained before
I wish that could help you

Answer 2

https://code.sololearn.com/c7tpkoN3AhZh/?ref=app

Answer 3

When you do "a+b", what really happens is that Python itself tries to call "a.__add__(b)". If there is that method, great, use that answer. If there isn't, it then tries to call "b.__radd__(a)". If there is not, it throws an error (I don't remember which one, might be a TypeError, but I'm not sure).