Reference library

Automation & scripting

CLI tools, scheduled jobs, filesystem tasks, and glue scripts that save time.

6 matches

Build a Python Utility That Verifies Backup Integrity Automatically

Automatically compute and verify SHA-256 checksums of backup files using a JSON manifest to detect missing or corrupted data.

sha256 backup integrity

Python

import hashlib
import os
import json

def compute_checksum(filepath, algorithm='sha256'):
    """Compute checksum for the given file."""
    hash_func = hashlib.new(algorithm)
    with open(filepath, 'rb') as f:
        for chunk in iter(lambda: f.read(4096), b''):
            hash_func.update(chunk)
    return hash_f…

52 0 Open

Automation & scripting medium

Find the Largest Files Consuming Disk Space with a Beautiful Terminal Report in Python

Scan a directory recursively and print a formatted terminal report of the largest files, with human-readable sizes.

file-system disk-space pathlib

Python

import os
import sys
from pathlib import Path

def get_largest_files(directory: str, count: int = 10) -> list:
    """
    Scan the given directory and return the largest files.
    
    Args:
        directory: Path to the directory to scan
        count: Number of largest files to return
        
    Returns:
      …

44 0 Open

Automation & scripting medium

Generate Beautiful Project Documentation from Python Source Code Automatically

Automatically generate a markdown summary of function docstrings from any Python source file using the AST module.

ast automation documentation

Python

import ast
import inspect
from pathlib import Path

def extract_docstrings_from_file(filepath):
    """Parse a Python file and collect function docstrings."""
    source = Path(filepath).read_text()
    tree = ast.parse(source)

    docs = []
    for node in ast.walk(tree):
        if isinstance(node, (ast.FunctionDef…

34 0 Open

Automation & scripting easy

Generate a Monthly Report CSV from Log Files in Python

Reads a CSV log file, filters events by a given month, aggregates daily event counts and revenue, and writes a summarized monthly report to a new CSV.

csv logs report

Python

import csv
from collections import defaultdict
from datetime import datetime

def generate_monthly_report(log_file: str, month: str, output_file: str) -> None:
    events_by_date = defaultdict(int)
    revenue_by_date = defaultdict(float)
    
    with open(log_file, 'r') as f:
        for line in f:
            date_…

14 0 Open

Automation & scripting medium

How to Detect Applications Consuming Excessive Memory in Python

Use psutil to list the top memory-using processes by RSS and print their names, PIDs, and memory usage in MB.

psutil memory monitoring

Python

import psutil

def find_top_memory_processes(limit=5):
    """Return top `limit` processes by memory usage (RSS)."""
    processes = []

    for proc in psutil.process_iter(['pid', 'name', 'memory_info']):
        try:
            info = proc.info
            mem = info['memory_info'].rss if info['memory_info'] else 0…

36 0 Open

Automation & scripting easy

Run pytest and email summary in Python

Runs pytest via subprocess, extracts the test summary line, and sends it in an email (mocked for demonstration).

pytest subprocess email

Python

import smtplib
import subprocess
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart


def run_tests():
    """Run pytest and capture the summary output."""
    result = subprocess.run(
        ["pytest", "-q"],
        capture_output=True,
        text=True
    )
    return result.stdo…

13 0 Open

Browse by section

Each section groups closely related Python snippets.