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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 from_rational( cls, value, to_base, precision=None, method=RoundingMethods.ROUND_DOWN ):
 """ Convert rational value to a base. :param Rational value: the value to convert :param int to_base: base of result, must be at least 2 :param precision: number of digits in total or None :type precision: int or NoneType :param method: rounding method :type method: element of RoundingMethods.METHODS() :returns: the conversion result and its relation to actual result :rtype: Radix * int :raises BasesValueError: if to_base is less than 2 Complexity: Uncalculated. """

        # pylint: disable=too-many-locals
        if to_base < 2:
            raise BasesValueError(to_base, "to_base", "must be at least 2")

        if precision is not None and precision < 0:
            raise BasesValueError(precision, "precision", "must be at least 0")

        if value == 0:
            non_repeating_part = [] if precision is None else precision * [0]
            return (Radix(0, [], non_repeating_part, [], to_base), 0)

        if value < 0:
            sign = -1
        else:
            sign = 1

        div_method = method

        if sign == -1:
            value = abs(value)
            div_method = cls._reverse_rounding_method(method)

        numerator = Nats.convert_from_int(value.numerator, to_base)
        denominator = Nats.convert_from_int(value.denominator, to_base)

        (integer_part, non_repeating_part, repeating_part, relation) = \
           NatDivision.division(
              denominator,
              numerator,
              to_base,
              precision,
              div_method
           )

        relation = relation * sign

        result = Radix(
           sign,
           integer_part,
           non_repeating_part,
           repeating_part,
           to_base
        )

        if precision is not None:
            (result, rel) = result.rounded(precision, method)
            relation = relation if rel == 0 else rel

        return (result, relation)