Event dispatcher (see python-whistle.github.io).
Whistle is a lightweight python library that allow your application components to communicate with each other by dispatching events and listening to them.
pip install whistle
Install the whistle package:
$ pip install whistle
Create an event dispatcher:
from whistle import EventDispatcher dispatcher = EventDispatcher()
Add a listener to react to events
def on_spectacle_starts(event): print('Please turn down your phones!') dispatcher.add_listener('spectacle.starts', on_spectacle_starts)</code></pre>
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