event-emitter-asyncio 1.0.4

Super simple event emitter in Python 3, built with asyncio. No decorators required.

Event Emitter (asyncio)

Super simple event emitter in Python 3, built with asyncio. No decorators required. Built around a subset of the NodeJS EventEmitter API.

A full write up and explanation for how this module works can be found here.

Installation

pip install event_emitter_asyncio

Usage (Working example)

import asyncio

from event_emitter_asyncio.EventEmitter import EventEmitter
event_emitter = EventEmitter()

async def run():
  # add a listener
  async def func(event):
    for pet in event['pets']:
      print(pet)
  event_emitter.add_listener('some-event', func)

  # emit an event every second for 3 seconds
  n = 0
  while n < 3:
    event_data = { 'pets': ['cats', 'dogs'] }
    event_emitter.emit('some-event', event_data)
    await asyncio.sleep(1)
    n += 1

  # remove the listener
  event_emitter.remove_listener('some-event', func)

loop = asyncio.get_event_loop()
loop.run_until_complete(run())

This will give:

> cats
> dogs
> cats
> dogs
> cats
> dogs

Developing on this repo

Development

git clone [e-mail]:joeltok/event-emitter-asyncio.git
cd ./event-emitter-asyncio
python3 -m venv ./venv
source venv/bin/activate
pip3 install pytest
pip3 install pytest-asyncio

Testing

python3 -m pytest src/event_emitter_asyncio/

Packaging

source venv/bin/activate
python3 -m pip install --upgrade build
python3 -m pip install --upgrade twine

rm -rf dist && python3 -m build
twine upload dist/*