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from math import hypot

class Vector:

def __init__(self, x=0, y=0):

self.x = x

self.y = y

def __repr__(self):

# return 'Vector(%r, %r)' % (self.x, self.y)

return f'Vector({self.x}, {self.y})'

def __abs__(self):

return hypot(self.x, self.y)

def __bool__(self):

return bool(abs(self))

def __add__(self, other):

x = self.x + other.x

y = self.y + other.y

return Vector(x, y)

def __mul__(self, scalar):

return Vector(self.x * scalar, self.y * scalar)

if __name__ == '__main__':

v1 = Vector(2, 4)

v2 = Vector(2, 1)

print(v1 + v2)

v = Vector(3, 4)

print(abs(v))

print(v * 3)

print(abs(v * 3))

print(str(v))