Perform Set Operations for Unique Elements and Comparisons

def handle_unique_elements_and_operations(list1, list2):
    """
    Demonstrates using Python sets for finding unique elements,
    union, intersection, and difference between two lists.
    """
    if not isinstance(list1, list) or not isinstance(list2, list):
        raise TypeError("Inputs must be lists.")

    # Convert lists to sets to automatically handle uniqueness and enable set operations
    set1 = set(list1)
    set2 = set(list2)

    # 1. Get unique elements from a single list
    unique_elements_list1 = set1
    
    # 2. Union: Elements in either set
    union_set = set1.union(set2) # or set1 | set2

    # 3. Intersection: Elements common to both sets
    intersection_set = set1.intersection(set2) # or set1 & set2

    # 4. Difference (elements in set1 but not in set2)
    difference_set1_2 = set1.difference(set2) # or set1 - set2

    # 5. Symmetric Difference (elements in either set, but not in both)
    symmetric_difference_set = set1.symmetric_difference(set2) # or set1 ^ set2

    # 6. Check for subset/superset
    is_subset = set1.issubset(set2)
    is_superset = set1.issuperset(set2)
    
    return {
        "unique_list1": list(unique_elements_list1), # Convert back to list if needed
        "union": list(union_set),
        "intersection": list(intersection_set),
        "difference_list1_minus_list2": list(difference_set1_2),
        "symmetric_difference": list(symmetric_difference_set),
        "list1_is_subset_of_list2": is_subset,
        "list1_is_superset_of_list2": is_superset
    }

# Example usage:
data1 = [1, 2, 3, 4, 5, 5, 4]
data2 = [4, 5, 6, 7, 8]

results = handle_unique_elements_and_operations(data1, data2)
# print(f"Set Operations Results: {results}")
# Expected:
# unique_list1: [1, 2, 3, 4, 5] (order might vary)
# union: [1, 2, 3, 4, 5, 6, 7, 8] (order might vary)
# intersection: [4, 5] (order might vary)
# difference_list1_minus_list2: [1, 2, 3] (order might vary)
# symmetric_difference: [1, 2, 3, 6, 7, 8] (order might vary)
# list1_is_subset_of_list2: False
# list1_is_superset_of_list2: False