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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 _utc_year(self):
 """Return a fractional UTC year, for convenience when plotting. An experiment, probably superseded by the ``J`` attribute below. """

        d = self._utc_float() - 1721059.5
        #d += offset
        C = 365 * 100 + 24
        d -= 365
        d += d // C - d // (4 * C)
        d += 365
        # Y = d / C * 100
        # print(Y)
        K = 365 * 3 + 366
        d -= (d + K*7//8) // K
        # d -= d // 1461.0
        return d / 365.0