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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 namedtuple_with_defaults(typename, field_names, default_values=()):
 """ create a namedtuple with default values """

    T = collections.namedtuple(typename, field_names)
    T.__new__.__defaults__ = (None, ) * len(T._fields)
    if isinstance(default_values, collections.Mapping):
        prototype = T(**default_values)
    else:
        prototype = T(*default_values)
    T.__new__.__defaults__ = tuple(prototype)
    return T