# Combining Lists

I have two lists such that each list contains no repeated elements. However, the lists do share some elements, and I want to combine the lists such that no elements are repeated. For example, if list_1 is $$[1,2,4]$$ and list_2 is $$[1,3,5]$$, then the combined list should be $$[1,2,4,3,5],$$ not $$[1,2,4,1,3,5].$$

To accomplish this, what should go in place of "FILL ME IN" in the code below?

 1 2 3 4 for element in list_2: if "FILL ME IN": list_1.append(element) print list_1 
×