python concatenate 1 pair from two lists code example

Example 1: python merge two list

listone = [1,2,3]
listtwo = [4,5,6]

joinedlist = listone + listtwo

Example 2: how to combine two lists in python

l1 = ["a", "b" , "c"]
l2 = [1, 2, 3]
l1 + l2
>>> ['a', 'b', 'c', 1, 2, 3]