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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 get_in(record, *keys, **kwargs):
 """Return the value corresponding to the keys in a nested record :param record: a dictionary :param keys: strings :param kwargs: keywords :returns: the value for the keys 'Lancelot' '?' """

    default = kwargs.get('default', None)
    return reduce(lambda a, x: a.get(x, default), keys, record)