Merge Lists in Python
Merge Lists in Python
To merge multiple lists in Python, you can use several methods depending on your requirements. In this tutorial, you will learn how to merge two or more lists.
Some of the methods to merge lists are as follows:
Using `+` (Concatenation Operator)
list1 = [1, 2, 3]
list2 = [4, 5, 6]
merged_list = list1 + list2
print(merged_list)
Output:
[1, 2, 3, 4, 5, 6]
Using `extend()` Method
Merging lists using the extend() method:
list1 = [1, 2, 3]
list2 = [4, 5, 6]
list1.extend(list2)
print(list1)
Output:
[1, 2, 3, 4, 5, 6]
Using `itertools.chain()`
import itertools
list1 = [1, 2, 3]
list2 = [4, 5, 6]
merged_list = list(itertools.chain(list1, list2))
print(merged_list)
Output:
[1, 2, 3, 4, 5, 6]
Using List Comprehension
list1 = [1, 2, 3]
list2 = [4, 5, 6]
merged_list = [item for sublist in [list1, list2] for item in sublist]
print(merged_list)
Output:
[1, 2, 3, 4, 5, 6]
Using `*` Unpacking (Python 3.5+)
list1 = [1, 2, 3]
list2 = [4, 5, 6]
merged_list = [*list1, *list2]
print(merged_list)
Output:
[1, 2, 3, 4, 5, 6]
