Sets in Python Challenge

Question

Once again, I come across incorrect questions in the Python Challenge related to sets.
e.g. What is output of this code?
x = {1:0, 0:1}
y = [1, [4, 6, 5, 4], 2]
print(list(set(y[x[0]]))[1])

Set is an unordered and unindexed collection of items in Python. The order of elements in a set is not guaranteed and may differ from the order of the original list. Therefore, when converting a set back to a list using list(), the order of elements can be any valid order, but it is guaranteed to be without duplicates. In this case, when converting the list [4, 6, 5, 4] to a set, the duplicate element 4 will be removed, leaving only the unique elements [4, 6, 5]. When converting it back to a list, the possible variations of the answer could be:

[4, 5, 6]
[4, 6, 5]
[5, 4, 6]
[5, 6, 4]
[6, 4, 5]
[6, 5, 4]

These are just some of the possible variations, as the order of elements in a set can be arbitrary.

Answer 1

you are right. Although you might get consistent result in this example, there is no guarantee in the order with sets. It misleads the student to expect a predictable result in the indexing from unsorted lists constructed from sets.

Answer 2

x is a dictionary. Orin Cook, you need glasses... 😁.

Answer 3

Oops lol, maybe I do