complex.py

  import math

# inheriting built-in Complex
class Complex(complex):
    def __add__(self, no):
        return Complex(complex.__add__(self, no))

    def __sub__(self, no):
        return Complex(complex.__sub__(self, no))

    def __mul__(self, no):
        return Complex(complex.__mul__(self, no))

    def __truediv__(self, no):
        return Complex(complex.__truediv__(self, no))

    def mod(self):
        return Complex(complex.__abs__(self))
    def __str__(self):
        return '{0:04.2f}{1:+04.2f}i'.format(self.real, self.imag+0)

# default code
if __name__ == '__main__':
    c = map(float, input().split())
    d = map(float, input().split())
    x = Complex(*c)
    y = Complex(*d)
    print(*map(str, [x+y, x-y, x*y, x/y, x.mod(), y.mod()]), sep='\n')