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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _Vapor_Density(cls, T):
 """Auxiliary equation for the density of saturated vapor Parameters T : float Temperature, [K] Returns ------- rho : float Saturated vapor density, [kg/m³] References IAPWS, Revised Supplementary Release on Saturation Properties of Ordinary Water Substance September 1992, http://www.iapws.org/relguide/Supp-sat.html, Eq.3 """

        eq = cls._rhoG["eq"]
        Tita = 1-T/cls.Tc
        if eq == 4:
            Tita = Tita**(1./3)
        suma = 0
        for n, x in zip(cls._rhoG["ao"], cls._rhoG["exp"]):
            suma += n*Tita**x
        Pr = exp(suma)
        rho = Pr*cls.rhoc
        return rho