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import blinker
def quash_exceptions(fn, sender, kwargs):
"""Always call all receivers, collecting values or exceptions."""
try:
return fn(sender, **kwargs), None
except Exception as exc:
return None, exc
def _adapt_xyz(fn, sender, kwargs):
return fn(sender, kwargs['x'], kwargs['y'], kwargs['z'])
class PositionalSignal(blinker.Signal):
"""Positional send and receive (x, y, z)"""
receiver_adapter = staticmethod(_adapt_xyz)
def send(self, sender, x, y, z):
return blinker.Signal.send(self, sender, x=x, y=y, z=z)
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