how to combine two lists in one python

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

joinedlist = listone + listtwo

Here is what the above code is Doing:
1. We create a list called listone and assign it the values 1, 2, and 3.
2. We create a list called listtwo and assign it the values 4, 5, and 6.
3. We create a list called joinedlist and assign it the values of listone and listtwo combined.