ทำได้หลายวิธี: 1. Concatenation Operator (+) l1=[1,2,3] l2=[2,3,4] l3=l1+l2 print(new list, l3) # new list [1, 2, 3, 2, 3, 4] 2. Append Method l1=[1,2,3] l2=[3,4,5] l1.append(l2) print(appended list, l1) # appended list [3, 4, 5, [2, 3, 4]] # l2 กลายเป็น nested list 3. Extend Method l1=[1,2,3] l