ComplexNumber Class

You are asked to create a class ComplexNumber that encapsulates the behavior of a complex number. A complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation . Because no real number satisfies this equation, i is called an imaginary number ().

Your ComplexNumber class should have the following attributes:

• real: The real part of the complex number (a)

• imaginary: The imaginary part of the complex number (b)

You have to implement these magic methods:

• __add__: This method should add two complex numbers and return a new ComplexNumber object that represents the result: .

• __sub__: This method should subtract one complex number from another and return a new ComplexNumber object that represents the result: .

• __mul__: This method should multiply two complex numbers and return a new ComplexNumber object that represents the result: .

• __truediv__: This method should divide one complex number by another and return a new ComplexNumber object that represents the result: .

Besides the numerical magic methods, you should also implement a __str__ magic method that would return the complex number as <real> + <imaginary> i.