# coding: utf-8

# Marche en python 3 !

### définition de la gestion des complexes ###

class Complex :
    def __str__(self) :
        return "{} + i * {}".format(self.re, self.im)
    
    def raz(self) :
        self.re = 0
        self.im = 0

    def conj(self) :
        return Complex(self.re, -self.im)

    def i():
        return Complex(0, 1)

    def from_real(r):
        return Complex(r,0)
    
    def __init__(self, re, im) :
        self.re = re
        self.im = im

### Utilisation ####


c  = Complex(3,4)
c_ = c.conj()

print(c)
print(c_)

c.raz()
print(c)

c = Complex.i()
print(c)

c = Complex.from_real(3.14)
print(c)