Blinker
=======
Blinker provides a fast dispatching system that allows any number of
interested parties to subscribe to events, or "signals".
Signal receivers can subscribe to specific senders or receive signals
sent by any sender.
 >>> from blinker import signal
 >>> started = signal('round-started')
 >>> def each(round):
 ... print "Round %s!" % round
 ...
 >>> started.connect(each)
 >>> def round_two(round):
 ... print "This is round two."
 ...
 >>> started.connect(round_two, sender=2)
 >>> for round in range(1, 4):
 ... started.send(round)
 ...
 Round 1!
 Round 2!
 This is round two.
 Round 3!
Requirements
------------
Blinker requires Python 2.4 or higher, Python 3.0 or higher, or Jython 2.5 or higher.
Changelog Summary
-----------------
1.1 (July 21, 2010)
 - Added ``@signal.connect_via(sender)`` decorator
 - Added ``signal.connected_to`` shorthand name for the
 ``temporarily_connected_to`` context manager.
1.0 (March 28, 2010)
 - Python 3.x compatibility
0.9 (February 26, 2010)
 - Sphinx docs, project website
 - Added ``with a_signal.temporarily_connected_to(receiver): ...`` support