Python Set Usage Example

items = {1, 2, 3}

items = set([1, 2, 3])

items.add(4)

items.update({5, 6})

items.update([7, 8])

if 5 in items:    pass

items.remove(8)

items.difference_update({6, 7})

items.difference_update([4, 5])

list_items = list(items)