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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 unique(new_cmp_dict, old_cmp_dict):
 """Return a list dict of the unique keys in new_cmp_dict """

    newkeys = set(new_cmp_dict)
    oldkeys = set(old_cmp_dict)
    unique = newkeys - oldkeys
    unique_ldict = []
    for key in unique:
        unique_ldict.append(new_cmp_dict[key])
    return unique_ldict