15 lines
445 B
Python
15 lines
445 B
Python
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class Observer(object):
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def __init__(self):
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super().__setattr__('_subscribers', {})
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def subscribe(self, name, cb):
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if name not in self._subscribers:
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self._subscribers[name] = []
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self._subscribers[name].append(cb)
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def __setattr__(self, name, val):
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if name in self._subscribers:
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for cb in self._subscribers[name]:
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cb(val)
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super().__setattr__(name, val)
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