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

title, tags

title	tags
union	list,beginner

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]