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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 _Tension(T):
 """Equation for the surface tension Parameters T : float Temperature, [K] Returns ------- σ : float Surface tension, [N/m] Notes ------ Raise :class:`NotImplementedError` if input isn't in limit: * 248.15 ≤ T ≤ 647 * Estrapolate to -25ºC in supercooled liquid metastable state Examples -------- 0.0716859625 0.0428914992 References IAPWS, Revised Release on Surface Tension of Ordinary Water Substance June 2014, http://www.iapws.org/relguide/Surf-H2O.html """

    if 248.15 <= T <= Tc:
        Tr = T/Tc
        return 1e-3*(235.8*(1-Tr)**1.256*(1-0.625*(1-Tr)))
    else:
        raise NotImplementedError("Incoming out of bound")