what does extend do in python

1#adding two or more elements in a list
2list1 = [1,2,3,4,5]
3list1.extend([6,7,8])
4print(list1)
5#output = [1, 2, 3 ,4 ,5, 6, 7, 8]

1# Difference between .append() and .extend() in python
2# .extend explained below :)
3
4list = ['hello', 'bro'] 
5my_list.append('append') 
6
7print (my_list)
8>>> ['geeks', 'for', 'geeks']
9
10my_list.append ([6, 0, 4, 1])
11
12print (my_list)
13>>> ['geeks', 'for', 'geeks', [6, 0, 4, 1]]
14
15# For list.extend, each element of an iterable gets appended 
16# to my_list
17
18my_list = ['geeks', 'for'] 
19another_list = [6, 0, 4, 1] 
20my_list.extend(another_list) 
21
22print (my_list)
23>>> ['geeks', 'for', 6, 0, 4, 1]
24
25# NOTE: A string is an iterable, so if you extend
26# a list with a string, you’ll append each character
27# as you iterate over the string.
28
29my_list = ['geeks', 'for', 6, 0, 4, 1] 
30my_list.extend('geeks') 
31
32print (my_list)
33>>>['geeks', 'for', 6, 0, 4, 1, 'g', 'e', 'e', 'k', 's']
34
35# and yup I have copied it.
36# Originally by Yvant2000

1The extend() method adds the specified list elements (or any iterable) to the end of the current list.