30-seconds-of-code/snippets/union.md

title, tags, cover, firstSeen, lastUpdated

title	tags	cover	firstSeen	lastUpdated
List union	list	blog_images/river-houses.jpg	2019-08-21T09:10:39+03:00	2020-11-02T19:28:35+02:00

Returns every element that exists in any of the two lists once.

• Create a set with all values of a and b and convert to a list.

def union(a, b):
  return list(set(a + b))

union([1, 2, 3], [4, 3, 2]) # [1, 2, 3, 4]