Automation & scripting
CLI tools, scheduled jobs, filesystem tasks, and glue scripts that save time.
How to Detect Network Interface Changes in Python
Monitor active network interfaces and print a message when an interface is added or removed using psutil and socket.
import socket
import psutil
import time
def get_network_interfaces():
"""Return a set of currently active interface names."""
active_ifaces = set()
for iface, addrs in psutil.net_if_addrs().items():
for addr in addrs:
if addr.family == socket.AF_INET: # IPv4 address present
…Monitor Disk Usage and Alert in Python
A Python script that checks disk usage percentage against a threshold and returns an ALERT or OK message with free space details.
import shutil
import os
def check_disk_usage(path="/", threshold=85.0):
usage = shutil.disk_usage(path)
percent_used = (usage.used / usage.total) * 100
if percent_used > threshold:
return (f"ALERT: Disk usage at {percent_used:.1f}% on {path} "
f"(exceeds {threshold}% threshold…Post a message to a Slack webhook in Python
Send a message to a Slack webhook endpoint using the standard library's urllib.request, handling the POST request and response cleanly.
import json
from urllib import request
def post_to_slack(webhook_url: str, message: str) -> dict:
payload = json.dumps({"text": message}).encode("utf-8")
req = request.Request(
webhook_url,
data=payload,
headers={"Content-Type": "application/json"},
method="POST",
)
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Automation & scripting — Python code examples
What you will find here
This page collects automation & scripting snippets — short, copy-ready Python you can paste into our free online IDE and run without installing anything. Each sample includes a plain-English explanation and the full source code.
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