Sets: unique values
Watch it run · 1 of 3
Adding a duplicate
1seen = set()2seen.add(5)3seen.add(1)4seen.add(5)5print(len(seen), 1 in seen, 7 in seen)
Memory
set seen
empty
Output
(nothing yet)line 1An empty set (not {}, which is an empty dict).
step 1 of 5