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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 _increment(sign, integer_part, non_repeating_part, base):
 """ Return an increment radix. :param int sign: -1, 0, or 1 as appropriate :param integer_part: the integer part :type integer_part: list of int :param non_repeating_part: the fractional part :type non_repeating_part: list of int :param int base: the base :returns: a Radix object with ``non_repeating_part`` rounded up :rtype: Radix Complexity: O(len(non_repeating_part + integer_part) """

        (carry, non_repeating_part) = \
           Nats.carry_in(non_repeating_part, 1, base)
        (carry, integer_part) = \
           Nats.carry_in(integer_part, carry, base)
        return Radix(
           sign,
           integer_part if carry == 0 else [carry] + integer_part,
           non_repeating_part,
           [],
           base,
           False
        )