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tz4678@gmail.com

Апрель 24, 2015 17:31:32

vanished

terabayt

Апрель 24, 2015 18:45:01

class Event:
    def __init__(self):
        self.callbacks = set()
    def connect(self, callback): 
        self.callbacks.add(callback)
        return self
    def disconnect(self, callback):
        self.callbacks.remove(callback)
    def emit(self, *args, **kwargs):
        for callback in self.callbacks:
            callback(*args, **kwargs)
    def clearCallbacks(self):
        self.callbacks.clear()
    __iadd__ = connect
    __isub__ = disconnect
    __call__ = emit
if __name__ == '__main__':
    def foo():
        print('foo')
    event = Event()
    event += foo
    event()

tz4678@gmail.com

Апрель 24, 2015 20:36:18

vanished

terabayt

Апрель 24, 2015 20:58:25

tz4678@gmail.com и?

Suguby27

Апрель 27, 2015 12:33:20

У вас connect ничего не возвращает и поэтому после event += foo event становится равен None

Багфикс

class Event:
    def __init__(self):
        self.callbacks = set()
    def connect(self, callback): 
        self.callbacks.add(callback)
        return self 
    def disconnect(self, callback):
        self.callbacks.remove(callback)
        return self
    def emit(self, *args, **kwargs):
        for callback in self.callbacks:
            callback(*args, **kwargs)
    def clearCallbacks(self):
        self.callbacks.clear()
    __iadd__ = connect
    __isub__ = disconnect
    __call__ = emit
if __name__ == '__main__':
    def foo():
        print('foo')
    event = Event()
    event += foo
    event()