Add elements of one list at the end of another list in python

1.	Add elements of one list at the end of another list in python
Answer» Appending ONE list to another results in a list that contains all the values of the first and second list. For example, a list [3, 4] appended to [1, 2] will result in the combined [1, 2, 3, 4]. A list can also be appended as an element to PRODUCE a list inside of a list such as [1, 2, [3, 4]]. USE list.extend() TO COMBINE TWO LISTS Use the syntax list1.extend(list2) to combine list1 and list2. list1 = [1, 2] list2 = [3, 4] list1.extend(list2) Combine list1 and list2 print(list1) OUTPUT [1, 2, 3, 4] USE list.append() TO ADD A LIST INSIDE OF A LIST Use the syntax list1.append(list2) to add list2 to list1. list1 = [1, 2] list2 = [3, 4] list1.append(list2) Add list2 to list1 print(list1) OUTPUT [1, 2, [3, 4]] OTHER SOLUTIONS Use itertools.chain() to combine many lists This solution is more efficient because it AVOIDS copying the lists. Further reading: See documentation for itertools.chain()Explanation:

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