Simple python list vs dictionary

Question

So I am very new to python and I cant for the life of me figure out why these two statements evaluate differently,

[3*x for x in range(1,11) if x > 5]

[18, 21, 24, 27, 30]

{3*x for x in range(1,11) if x > 5}

set([24, 18, 27, 21, 30])

The top one makes perfect sense to me but why does the second print things in such a weird order? I know that hard brackets '[' are for lists and '{' for dictionaries.

Answer 1

The second one is not a dictionary but a set. Both sets and dictionaries are unordered. The elements are not stored or displayed with any particular meaningful order.