Skip to main content

Micro web framework around asyncio (ex tulip)

Project description


To start off, rainfall is a micro web framework around asyncio (ex tulip), similiar to the cyclone or tornado. Since it is asyncio based, rainfall is fully asyncronous.

The performance tests have shown that rainfall is not slower then twisted+cyclone and sometimes even faster (benchmark results will be posted later or you can test it by yourself).


As simple as:

pip3 install rainfall


usually pip for python 3 is called pip3, but you may have it with other name

Hello world

Let’s create a simple hello world app in file like this:

import asyncio
from rainfall.web import Application, HTTPHandler

class HelloHandler(HTTPHandler):
    def handle(self, request):
        return 'Hello!'

app = Application(
        r'^/$': HelloHandler(),

if __name__ == '__main__':

Now you can run it by:


And go to in browser, you should see “Hello!”


For documentation go to

Project details

Release history Release notifications

History Node


History Node


History Node


This version
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
rainfall-0.8.0.tar.gz (5.8 kB) Copy SHA256 hash SHA256 Source None Jan 6, 2014

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