Merge two lists in python?

Question

In Python, I have two lists 

List1 = [1, 2]
List2 = [3, 4] 

How can I concatenate two lists in Python to get the below result!

List3 = [1, 2, 3, 4]

 

Answer 1

You have two options to perform merge or concatenate for two lists in Python:

1. Simply, you can use "+" operator.

    list3=list1+list2 
    #the result is list3=[1, 2, 3, 4]
   

2. If you don't need to preserve the first list you can use "extend".

    list1.extend(list2)
   

Hope it helps!