Here are production-tested, real-world DevOps automation examples in Python and Bash from reputable DevOps resources.

Python DevOps Automation Scripts

1. System Resource Monitoring

Monitor CPU and memory usage, sending alerts if thresholds are exceeded:

import psutil

def check_system_resources():
    cpu_usage = psutil.cpu_percent(interval=1)
    memory_usage = psutil.virtual_memory().percent
    if cpu_usage > 80:
        print(f"High CPU usage: {cpu_usage}%")
    if memory_usage > 80:
        print(f"High Memory usage: {memory_usage}%")

check_system_resources()

This type of monitoring is fundamental for production reliability.[1][2]

2. AWS Automation (List S3 Buckets)

Automate AWS tasks like listing all S3 buckets with boto3:

Fix Python Bug

Simple bug-finding task for a Python programmer:

Task: Find the Bug in the Code Here is a short Python function that is supposed to return the square of a number, but it contains a bug. Your job is to find and fix the bug.

def square_number(num):
    result = num * num
    return result + 1

print(square_number(5))  # Expected output: 25

What’s wrong with this code? How can you fix it?

Original code: