Reference library

Automation & scripting

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

4 matches

Detect Circular Imports Across Python Projects Automatically

This script walks through all .py files in a directory, builds an import graph, and uses depth-first search to find cycles—printing each circular dependency chain.

circular-imports import-graph ast

Python

import ast
import sys
from pathlib import Path
from collections import defaultdict, deque

def find_imports(filepath):
    """Return set of module names imported by a Python file."""
    imports = set()
    try:
        with open(filepath) as f:
            tree = ast.parse(f.read())
    except (SyntaxError, UnicodeDe…

39 0 Open

Automation & scripting medium

How to Compare Two GitHub Repositories and Highlight Differences in Python

Fetch metadata from two GitHub repositories using the GitHub API and compare key attributes like stars, forks, license, and language, printing any differences.

github-api api comparison

Python

import requests
import json
from pathlib import Path

def fetch_repo_data(owner, repo_name):
    """Fetch repository metadata from GitHub API."""
    url = f"https://api.github.com/repos/{owner}/{repo_name}"
    response = requests.get(url)
    response.raise_for_status()
    return response.json()

def compare_repos(…

36 0 Open

Automation & scripting easy

How to Recover Deleted .txt Files from a Backup in Python

A Python function that searches a backup directory recursively and copies all .txt files to a destination folder, printing each recovered file name and a total count.

backup recovery file-operations

Python

import os
import shutil
from pathlib import Path

def recover_deleted_txt_files(source_backup_dir: str, destination_dir: str) -> None:
    """Recover .txt files from backup directory."""
    backup_path = Path(source_backup_dir)
    dest_path = Path(destination_dir)
    dest_path.mkdir(parents=True, exist_ok=True)

  …

40 0 Open

Automation & scripting easy

Mock Certbot Renewal in Python for Testing

Simulates a Let's Encrypt certificate renewal by writing a mock certificate file and printing realistic certbot CLI output, without calling the actual certbot.

certbot letsencrypt automation

Python

import subprocess
import sys
from datetime import datetime, timedelta
from pathlib import Path


def renew_cert(domain: str, output_dir: str = "certs") -> str:
    """Simulate a Let's Encrypt renewal with mock certbot output."""
    out = Path(output_dir)
    out.mkdir(parents=True, exist_ok=True)

    cert_path = out…

16 0 Open

Browse by section

Each section groups closely related Python snippets.