remove duplicates from dicts with list values

[wardancer84]

If a = {X:[y, z]} and b = {Y:[y, z]} are there any duplicates, or do the keys have to match to be a duplicate?
Is X a duplicate in this: a = {X:[]}, b = {X:[]}
Is y a duplicate in this: a = {X:[y]}, b={X:[[y]]}
"Duplicate" is very vague. Maybe it is clear to you since you defined what it means in your head, but you haven't shared that definition here.

If a = {X:[y, z]} and b = {Y:[y, z]} are there any duplicates, or do the keys have to match to be a duplicate?

as stated in posting #3 only the values matters

Is X a duplicate in this: a = {X:[]}, b = {X:[]}

No

Is y a duplicate in this: a = {X:[y]}, b={X:[[y]]}

No

Is y a duplicate in this: a = {X:['y', '1']}, b={X:['y', '0']}

Yes

i use this function to get the CHANGED values between two dicts, this works perfectly well...

# return a dict with all the changed values
def get_changed(a, b):
    filtered_dict = {}
    for key in a:
        try:
            a.get(key) != b[key]
        except KeyError:
            continue
        filtered_dict[key] = [value for value in b[key] if value not in a.get(key, [])]
    return filtered_dict

but this function that looksup the DELETED values returns wrong data, changed values are somehow returned as deleted values in addition to the actual deleted values, maybe i should only iterate the keys...no idea...

# return a dict that contains what is missing in current data
def get_deleted(a, b):
    answer = {}
    for key, value in a.items():
        try:
            v = b[key]
        except KeyError:
            continue
        ls_del = [i for i in value if i not in v]
        answer[key] = {}
        #answer[key] = ls_del or [None]
        answer[key] = ls_del
        print("get_delete_func", answer)
    return answer