how to appending something in array python code example

Example 1: append element to an array python

x = ['Red', 'Blue']
x.append('Yellow')

Example 2: append item to array python

data = []
data.append("Item")

print(data)

Example 3: how to appending something in array python

my_list.extend([1,2,3,4])
my_list
--> [12,1,2,3,4]