Skip to main content
Help us improve PyPI by participating in user testing. All experience levels needed!

Async helpers for prometheus_client.

Project description

PyPI Documentation Status CI status Test Coverage Code style: black

prometheus_async adds support for asynchronous frameworks to the official Python client for the Prometheus metrics and monitoring system.

Currently asyncio (Python 3.5+, PyPy3) and Twisted (Python 2.7, 3.5+, PyPy) are supported.

It works by wrapping the metrics from the official client:

import asyncio

from aiohttp import web
from prometheus_client import Histogram
from prometheus_async.aio import time

REQ_TIME = Histogram("req_time_seconds", "time spent in requests")

async def req(request):
    await asyncio.sleep(1)
    return web.Response(body=b"hello")

Even for synchronous applications, the metrics exposure methods can be useful since they are more powerful than the one shipped with the official client. For that, helper functions have been added that run them in separate threads (asyncio-only for the time being).

The source code is hosted on GitHub and the documentation on Read The Docs.

Release Information

18.2.0 (2018-05-29)

Backward-incompatible changes:



  • Passing a loop argument to prometheus_async.aio.start_http_server() is a no-op and raises a DeprecationWarning now.


  • Port to aiohttp’s application runner APIs to avoid those pesky deprecation warnings. As a consequence, the loop argument has been removed from internal APIs and became a no-op in public APIs.

Full changelog.


prometheus_async is written and maintained by Hynek Schlawack.

The development is kindly supported by Variomedia AG.

Other contributors can be found in GitHub’s overview.

Project details

Release history Release notifications

This version
History Node


History Node


History Node


History Node


History Node


History Node


History Node


History Node


History Node


History Node


Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Filename, size & hash SHA256 hash help File type Python version Upload date
prometheus_async-18.2.0-py2.py3-none-any.whl (16.5 kB) Copy SHA256 hash SHA256 Wheel py2.py3 May 29, 2018
prometheus_async-18.2.0.tar.gz (27.1 kB) Copy SHA256 hash SHA256 Source None May 29, 2018

Supported by

Elastic Elastic Search Pingdom Pingdom Monitoring Google Google BigQuery Sentry Sentry Error logging CloudAMQP CloudAMQP RabbitMQ AWS AWS Cloud computing Fastly Fastly CDN DigiCert DigiCert EV certificate StatusPage StatusPage Status page