def calculate(self, T, P, zs, ws, method):
if method == SIMPLE:<EOL><INDENT>ks = [i(T, P) for i in self.ThermalConductivityLiquids]<EOL>return mixing_simple(zs, ks)<EOL><DEDENT>elif method == DIPPR_9H:<EOL><INDENT>ks = [i(T, P) for i in self.ThermalConductivityLiquids]<EOL>return DIPPR9H(ws, ks)<EOL><DEDENT>elif method == FILIPPOV:<EOL><INDENT>ks = [i(T, P) for i in self.ThermalConductivityLiquids]<EOL>return Filippov(ws, ks)<EOL><DEDENT>elif method == MAGOMEDOV:<EOL><INDENT>k_w = self.ThermalConductivityLiquids[self.index_w](T, P)<EOL>ws = list(ws) ; ws.pop(self.index_w)<EOL>return thermal_conductivity_Magomedov(T, P, ws, self.wCASs, k_w)<EOL><DEDENT>else:<EOL><INDENT>raise Exception('<STR_LIT>')<EOL><DEDENT>
r'''Method to calculate thermal conductivity of a liquid mixture at 
        temperature `T`, pressure `P`, mole fractions `zs` and weight fractions
        `ws` with a given method.

        This method has no exception handling; see `mixture_property`
        for that.

        Parameters
        ----------
        T : float
            Temperature at which to calculate the property, [K]
        P : float
            Pressure at which to calculate the property, [Pa]
        zs : list[float]
            Mole fractions of all species in the mixture, [-]
        ws : list[float]
            Weight fractions of all species in the mixture, [-]
        method : str
            Name of the method to use

        Returns
        -------
        k : float
            Thermal conductivity of the liquid mixture, [W/m/K]