Skip to main content
This is a pre-production deployment of Warehouse. Changes made here affect the production instance of PyPI (
Help us improve Python packaging - Donate today!

Event system for Python

Project Description

Reflex is an event system for applications made using Python.

The package provides a way for applications to manage events and event listeners, with little effort.

While the system is somewhat more complex than existing event systems, I feel it is more flexible, and more powerful.

Below is an example that hints at the capabilites of Reflex:

from import Event
from reflex.control import EventManager
from reflex.interfaces import Reactor

class example(Reactor):

    name = 'example'

    def __inst__(self):
        self.bind(self.handler, 'basic', source='main')
        self.bind(self.use_args, 'args')

    def handler(self, event, *args):
        print("Hello, world!")

    def use_args(self, event, *args):
        print("Event triggered by {0} since because {1}.".format(event.source, args[0]))

events = EventManager()
obj = example(events)

# The following event trigger is not handled by anything.
# The next event trigger is handled by the handler method.
events.trigger(Event('basic', [('source', 'main')]))
# This one is yes.
events.trigger(Event('args', [('source', 'main')]), 'pickles')

Documentation and a package reference can be found at

The purpose of this package is to make creating an event driven plugin system for your application an effortless task. A full plugin system can created in just a few lines, as shown here:

from import Event
from reflex.control import EventManager
from reflex.control import ReactorBattery
import plugins

# Create an event manager.
events = EventManager()

# Create a battery.
battery = ReactorBattery()
# Load our plugins.
battery.load_objects(events, plugins, 'Plugin')

# Plugins can now be accessed as such:
#   battery.loaded[plugin_name]
# Events can be fired as follows:
#   events.trigger(Event('my event'))
# Easy as pie!

The above example assumes your plugins are stored in a package called plugins.

Release History

Release History

This version
History Node


History Node


History Node


History Node


History Node


History Node


History Node


Download Files

Download Files

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

File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
Reflex-events-1.14.tar.gz (17.4 kB) Copy SHA256 Checksum SHA256 Source Dec 11, 2011 (26.8 kB) Copy SHA256 Checksum SHA256 Source Dec 11, 2011

Supported By

WebFaction WebFaction Technical Writing Elastic Elastic Search Pingdom Pingdom Monitoring Dyn Dyn DNS Sentry Sentry Error Logging CloudAMQP CloudAMQP RabbitMQ Heroku Heroku PaaS Kabu Creative Kabu Creative UX & Design Fastly Fastly CDN DigiCert DigiCert EV Certificate Rackspace Rackspace Cloud Servers DreamHost DreamHost Log Hosting