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

23 votes123 views6 answers
Check tensorflow version
Python
3 votes130 views1 answer
Selenium python activate new tab
Python
3 votes112 views3 answers
Python selenium clear input
Python
43 votes121 views6 answers
Python run shell command
Python
10 votes140 views1 answer
Pandas slice based on column value
Python
0 vote147 views1 answer
Median absolute deviation scipy
Python
0 vote72 views1 answer
How to use constructor of base class in derived class in python
Python
81 votes128 views10 answers
Python get current directory
Python
0 vote119 views1 answer
Get file arg0 python
Python
0 vote127 views1 answer
Python openpyxl cell width
Python