Python Array reverse() Method

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The Python array reverse() method is used to reverse the order of the items in an array.

Syntax

Following is the syntax of Python array reverse() method −

array_name.reverse()

Parameters

This method does not accept any parameter.

Return Value

This method does not return any value.

Example 1

Following is the basic example of python array reverse() method −

import array as arr
#Creating an array
my_array1 = arr.array('i',[40,50,60,15,90,20])
#Printing the elements of an array
print("Original Array: ",my_array1)
#reversing the array
my_array1.reverse()
print("Reversed Array: ", my_array1)

Output

Following is the output of the above code −

Original Array:  array('i', [40, 50, 60, 15, 90, 20])
Reversed Array:  array('i', [20, 90, 15, 60, 50, 40])

Example 2

Lets understand with different datatype, Here we have created an array of double datatype.

import array as arr
#Creating an array
my_array2 = arr.array('d',[13.5,45.7,99.5,1.5,8.9,22.5])
#Printing the elements of an array
print("Original Array: ",my_array2)
#reversing the array
my_array2.reverse()
print("Reversed Array: ", my_array2)

Output

Following is the output of the above code −

Original Array:  array('d', [13.5, 45.7, 99.5, 1.5, 8.9, 22.5])
Reversed Array:  array('d', [22.5, 8.9, 1.5, 99.5, 45.7, 13.5])

Example 3

Lets try to reverse an array without using reverse() method −

import array as arr
#Creating an array
my_array3 = arr.array('i',[45,55,65,75,85,95])
#creating an empty array
rev_array=arr.array('i',[])
#Printing the elements of an original array
print("Original Array : ",my_array3)
#reversing the an array and appending into rev_array
length=len(my_array3)
for i in range(0,length):
    rev_array.append(my_array3[length-1-i])
#Updating original array[my_array3]   
my_array3=rev_array    
print("Reversed Array: ", my_array3)

Output

Original Array:  array('i', [45, 55, 65, 75, 85, 95])
Reversed Array:  array('i', [95, 85, 75, 65, 55, 45])

Example 4

In Python list is similar to array, Here we have created an array of string −

#Creating a string array
my_array4=["Apple","Bat","Cat","Dog"]
#reversing the string array
my_array4.reverse()
print(my_array4)

['Dog', 'Cat', 'Bat', 'Apple']