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Python: Append a new item to the end of the array

Python: Array Exercise-2 with Solution

Write a Python program to append a new item to the end of the array.

Pictorial Presentation:

Python Exercises: Append a new item to the end of the array

Sample Solution:

Python Code :

from array import *
array_num = array('i', [1, 3, 5, 7, 9])
print("Original array: "+str(array_num))
print("Append 11 at the end of the array:")
array_num.append(11)
print("New array: "+str(array_num))

Sample Output:

Original array: array('i', [1, 3, 5, 7, 9])                            
Append 11 at the end of the array:                                     
New array: array('i', [1, 3, 5, 7, 9, 11])

Python Code Editor:

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Previous: Write a Python program to create an array of 5 integers and display the array items. Access individual element through indexes.
Next: Write a Python program to reverse the order of the items in the array.

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Python: Tips of the Day

Calling an external command from Python:

The subprocess module in the standard library:

Example:

import subprocess
subprocess.run(["ls", "-l"])

The advantage of subprocess vs. system is that it is more flexible (you can get the stdout, stderr, the "real" status code, better error handling, etc...).

The official documentation recommends the subprocess module over the alternative os.system():

The subprocess module provides more powerful facilities for spawning new processes and retrieving their results; using that module is preferable to using this function [os.system()].

The Replacing Older Functions with the subprocess Module section in the subprocess documentation may have some helpful recipes.

For versions of Python before 3.5, use call:

import subprocess
subprocess.call(["ls", "-l"])

Ref: https://bit.ly/2ANeuPR