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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 _D2O_ThCond(rho, T):
 """Equation for the thermal conductivity of heavy water Parameters rho : float Density, [kg/m³] T : float Temperature, [K] Returns ------- k : float Thermal conductivity, [W/mK] Examples -------- 0.6077128675880629 0.07910346589648833 References IAPWS, Revised Release on Viscosity and Thermal Conductivity of Heavy Water Substance, http://www.iapws.org/relguide/TransD2O-2007.pdf """

    rhor = rho/358
    Tr = T/643.847
    tau = Tr/(abs(Tr-1.1)+1.1)

    no = [1.0, 37.3223, 22.5485, 13.0465, 0.0, -2.60735]
    Lo = sum([Li*Tr**i for i, Li in enumerate(no)])

    nr = [483.656, -191.039, 73.0358, -7.57467]
    Lr = -167.31*(1-exp(-2.506*rhor))+sum(
        [Li*rhor**(i+1) for i, Li in enumerate(nr)])

    f1 = exp(0.144847*Tr-5.64493*Tr**2)
    f2 = exp(-2.8*(rhor-1)**2)-0.080738543*exp(-17.943*(rhor-0.125698)**2)
    f3 = 1+exp(60*(tau-1)+20)
    f4 = 1+exp(100*(tau-1)+15)
    Lc = 35429.6*f1*f2*(1+f2**2*(5e9*f1**4/f3+3.5*f2/f4))

    Ll = -741.112*f1**1.2*(1-exp(-(rhor/2.5)**10))

    return 0.742128e-3*(Lo+Lr+Lc+Ll)