APScheduler

APScheduler is a flexible task scheduling and job queue system for Python applications. It supports both synchronous and asynchronous execution with multiple scheduling mechanisms including cron-style, interval-based, and one-off scheduling.

Quick Start

Basic Synchronous Scheduler

from datetime import datetime
from apscheduler import Scheduler
from apscheduler.triggers.interval import IntervalTrigger

def tick():
    print(f"Tick: {datetime.now()}")

# Create and start scheduler with memory datastore
with Scheduler() as scheduler:
    scheduler.add_schedule(tick, IntervalTrigger(seconds=1))