Python Arrays Example

The arrays class of arrays module in Python offers methods to process the arrays easily. The programmers can easily perform certain operations by using these methods. We should understand that a method is similar to a function that performs a specific task. But methods are written inside a class whereas a function can be written inside or outside the class. Methods are generally called as: objectname.method(). Please see Table for methods that can be used on arrays:

we can also use the following variables of Array class as shown in Table

Python program to understand various methods of arrays class.

from array import* 
arr = array('i', [10,20,30,40,50,20]) 
print('Original array:', arr) 
arr.append(30) 
arr.append(60) 
print('After appending 30 and 60:', arr) 
arr.insert(1, 99) 
print('After inserting 99 in 1st position:', arr) 
arr.remove(20) 
print('After removing 20:', arr) 
n = arr.pop() 
print('Array after using pop():', arr) 
print('Popped element:', n) 
n = arr.index(30) 
print('First occurrence of element 30 is at:', n)
lst = arr.tolist() 
print('List:', lst) 
print('Array:', arr)