Concurrency Python Packages

pyee

A rough port of Node.js's EventEmitter to Python with a few tricks of its own

asyncio

asyncio historical repository

eventlet

Concurrent networking library for Python

atomicwrites

Powerful Python library for atomic file writes.

arq

Fast job queuing and RPC in python with asyncio and redis.

aiorwlock

Read/Write Lock - synchronization primitive for asyncio

aiologic

GIL-powered* locking library for Python

culsans

Thread-safe async-aware queue for Python

atomicwrites-homeassistant

Powerful Python library for atomic file writes.

concurrencytest

Python - Run unittest test suites concurrently

vermin

Concurrently detect the minimum Python versions needed to run code

django-concurrency

Optimistic lock implementation for Django. Prevents users from doing concurrent editing.

pykka

🌀 Pykka makes it easier to build concurrent Python applications.

portal

Fast and reliable distributed systems in Python

weka-easypy

This repository will no longer be maintained. See instead https://github.com/real-easypy/easypy

cloud-files

Threaded Python and CLI client library for AWS S3, Google Cloud Storage (GCS), in-memory, and the local filesystem.

atomr-infer

Multi-runtime GPU + remote inference as a supervised actor system on atomr. OpenAI / Anthropic / Gemini / LiteLLM remote runtimes + vLLM / TensorRT / ORT / mistral.rs local; remote-only build compiles zero GPU deps.

asks

Async requests-like httplib for python.

sqlalchemy-dlock

Distributed lock based on Database and SQLAlchemy.

celery-pool-asyncio

Celery pool to run coroutine tasks

octobot-channels

Python async multi-task communication library. Used by OctoBot projects.

lox

Threading and Multiprocessing made easy.

futureproof

Bulletproof concurrent.futures

plimit

Run multiple async functions with limited concurrency — Python port of p-limit