How to take two lists and combine them excluding any duplicates?

Question

I\'d like to make one list from two separate lists of unique items.

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Answer 1

>>> l1 = range(10)
>>> l2 = range(5, 15)
>>> set(l1) | set(l2)
set([0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14])