list =[ list =[ result =list +list print(str(result)output[ naive methodin the naive methoda for loop is used to be traverse the second list after thisthe elements from the second list will get appended to the first list the first list of results out to be the concatenation of the first and the second list examplelist [ list [ print("before concatenation:str(list )for in list list append(xprint ("after concatenation:str(list )outputbefore concatenation[ after concatenation[ list comprehensionpython list comprehension is an the alternative method to concatenate two lists in python list comprehension is basically the process of building generating list of elements based on an existing list it uses the for loop to process and traverses list in the element-wise fashion the below inline is for-loop is equivalent to nested for loop