How to use the uszipcode.pkg.fuzzywuzzy.utils.check_for_none function in uszipcode

@utils.check_for_none
@utils.check_for_equivalence
@utils.check_empty_string
def ratio(s1, s2):
    s1, s2 = utils.make_type_consistent(s1, s2)

    m = SequenceMatcher(None, s1, s2)
    return utils.intr(100 * m.ratio())

@utils.check_for_none
@utils.check_for_equivalence
@utils.check_empty_string
def partial_ratio(s1, s2):
    """"Return the ratio of the most similar substring
    as a number between 0 and 100."""
    s1, s2 = utils.make_type_consistent(s1, s2)

    if len(s1) <= len(s2):
        shorter = s1
        longer = s2
    else:
        shorter = s2
        longer = s1

    m = SequenceMatcher(None, shorter, longer)
    blocks = m.get_matching_blocks()

@utils.check_for_none
def _token_set(s1, s2, partial=True, force_ascii=True, full_process=True):
    """Find all alphanumeric tokens in each string...
        - treat them as a set
        - construct two strings of the form:
            
        - take ratios of those two strings
        - controls for unordered partial matches"""

    if not full_process and s1 == s2:
        return 100

    p1 = utils.full_process(
        s1, force_ascii=force_ascii) if full_process else s1
    p2 = utils.full_process(
        s2, force_ascii=force_ascii) if full_process else s2

@utils.check_for_none
def _token_sort(s1, s2, partial=True, force_ascii=True, full_process=True):
    sorted1 = _process_and_sort(s1, force_ascii, full_process=full_process)
    sorted2 = _process_and_sort(s2, force_ascii, full_process=full_process)

    if partial:
        return partial_ratio(sorted1, sorted2)
    else:
        return ratio(sorted1, sorted2)