PyDispatcher Multi-producer Multi-consumer Observables
PyDispatcher provides the Python programmer with a multiple-producer-multiple-consumer signal-registration and routing infrastructure for use in multiple contexts. The mechanism of PyDispatcher started life as a highly rated recipe in the Python Cookbook. The project aims to include various enhancements to the recipe developed during use in various applications. It is primarily maintained by Mike Fletcher. A derivative of the project provides the Django web framework's "signal" system.
Installation
PyDispatcher is available on PyPI via standard PIP:
pip install PyDispatcher
Usage
Documentation is available for detailed usage, but the basic idea is:
from pydispatch import dispatcher
metaKey = "moo"
MyNode = object()
event = {"sample": "event"}
def callback(event=None):
"""Handle signal being sent"""
print("Signal received", event)
dispatcher.connect(callback, sender=MyNode, signal=metaKey)
dispatcher.send(metaKey, MyNode, event=event)
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