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Automation & scripting

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

7 matches

Aggregate Log Errors Count by Hour in Python

Counts ERROR log lines per hour using regex and Counter, returning a sorted dictionary of hourly totals.

import re
from collections import Counter
from datetime import datetime

def aggregate_errors_by_hour(log_lines):
    pattern = re.compile(r'^(\d{4}-\d{2}-\d{2} \d{2}):\d{2}:\d{2}.*ERROR')
    hourly_counts = Counter()
    
    for line in log_lines:
        match = pattern.match(line)
        if match:
            ho…

21 0 Open

Automation & scripting easy

Build a Live Countdown Timer for Events in Python

A Python script that displays a real-time countdown to a target date and time, updating every second in the console.

datetime countdown timers

Python

import datetime
import time

def countdown(event_name, target_datetime):
    """Displays a live countdown to a target datetime."""
    while True:
        now = datetime.datetime.now()
        remaining = target_datetime - now
        if remaining.total_seconds() <= 0:
            print(f"\n🚀 {event_name} is happening…

46 0 Open

Automation & scripting easy

How to Backup an SQLite Database with a Timestamp in Python

Backs up an SQLite database file to a timestamped copy using the sqlite3 backup API.

sqlite backup automation

Python

import sqlite3
import shutil
from datetime import datetime
from pathlib import Path

def backup_database(db_path: str, backup_dir: str = "backups") -> Path:
    db = Path(db_path)
    backup_folder = Path(backup_dir)
    backup_folder.mkdir(exist_ok=True)
    
    timestamp = datetime.now().strftime("%Y%m%d_%H%M%S")
 …

14 0 Open

Automation & scripting easy

How to Filter Docker Containers for Pruning in Python

Simulate Docker's container prune by filtering a JSON list for exited containers older than a cutoff, returning pruned IDs and space freed.

docker json datetime

Python

import json
from datetime import datetime, timedelta


def parse_docker_ps(json_output: str, older_than_hours: int = 24) -> list:
    containers = json.loads(json_output)
    cutoff = datetime.now() - timedelta(hours=older_than_hours)
    return [
        c for c in containers
        if datetime.fromisoformat(c["crea…

13 0 Open

Automation & scripting easy

How to Find Stale GitHub Issues in Python

Filter a list of GitHub issues to find those not updated within a configurable number of days using Python datetime arithmetic.

github issues automation

Python

import os
from datetime import datetime, timezone, timedelta
import re

# Simulated GitHub issue data structure
SAMPLE_ISSUES = [
    {"number": 101, "title": "Login button not working", "updated_at": "2025-06-01T12:00:00Z", "assignee": "alice"},
    {"number": 102, "title": "Fix database migration error", "updated_at…

35 0 Open

Automation & scripting easy

Parse WHOIS Data with Python Regex

Extract domain registration fields from a mock WHOIS record using regex and compute days until expiration.

whois regex parsing

Python

import re
from datetime import datetime


def parse_whois(whois_text: str) -> dict:
    """Extract key registration fields from a mock WHOIS record."""
    patterns = {
        "domain": r"Domain Name:\s*(.+)",
        "registrar": r"Registrar:\s*(.+)",
        "creation_date": r"Creation Date:\s*(.+)",
        "expir…

12 0 Open

Automation & scripting easy

Parse cron expression and compute next run datetime in Python

Parse a 5-field cron expression and compute the next matching datetime starting from a given base time.

cron datetime scheduling

Python

from datetime import datetime, timedelta
import re

def parse_cron_and_next_run(cron_expr, base_time=None):
    """Parse a cron expression and compute the next run time."""
    if base_time is None:
        base_time = datetime.now().replace(second=0, microsecond=0)

    fields = cron_expr.split()
    if len(fields) !…

11 0 Open

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