class Polynomial:
    def __init__(self, *coeffs):
        self.coeffs = coeffs

    def __repr__(self):
        return 'Polynomial{}'.format(self.coeffs)
           #                   | this bit here
    def __add__(self, other): #v this bit here
        return Polynomial(*(x + y for x, y in zip_longest(self.coeffs, other.coeffs))) #This is the line specifically

p1 = Polynomial(1, 2, 3) #  x^2 + 2x + 3
p2 = Polynomial(3, 4, 3) # 3x^2 + 4x + 3
p3 = p1+p2
print(p3) #Result was as expected, "Polynomial(4, 6, 6)"