def arg(self): x = self.real y = self.imag return math.atan2(y,x)
def arg(self): x = self.real y = self.imag return math.atan2(y,x)
def arg(self): x = self.real y = self.imag return math.atan2(y,x)
def arg(self): x = self.real y = self.imag return math.atan2(y,x)