Python observer pattern

class Event(object):
    pass

class Observable(object):
    def __init__(self):
        self.callbacks = []
    def subscribe(self, callback):
        self.callbacks.append(callback)
    def fire(self, **attrs):
        e = Event()
        e.source = self
        for k, v in attrs.iteritems():
            setattr(e, k, v)
        for fn in self.callbacks:
            fn(e)

Source: stackoverflow.com

Similar codes

91 votes236 views6 answers
Sort df by column
Python
0 vote241 views1 answer
How to add illegal characters to paths python
Python
15 votes245 views2 answers
Python install package from code
Python
0 vote241 views1 answer
How to install package offline
Python
0 vote275 views1 answer
Pycharm Error: Please select a valid Python interpreter
Python
0 vote240 views1 answer
How to join an array of characters in python
Python
0 vote252 views1 answer
Python write line break
Python
0 vote275 views1 answer
How to get cube root python
Python
11 votes232 views2 answers
Format python number with commas
Python
3 votes244 views6 answers
Python variable
Python