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Code: Alles auswählen

class CPClass(object):
    id = None
    actions = {"init": []}
    
    @reconstructor
    def __init__(self,**kwargs):
        for key,value in kwargs.iteritems():
            setattr(self,key,value)
    
    @hybrid_method
    def search(cls,condition=None,**kwargs):
        if condition:
            return session.query(cls).filter(condition)
        else:
            return session.query(cls).filter_by(**kwargs)
    
    @hybrid_method
    def search_one(cls,condition=None,**kwargs):
        return cls.search(condition=condition,**kwargs).one()
    
    @classmethod
    def on(cls,action,handler):
        try:
            cls.actions[action].append(handler)
        except KeyError:
            cls.actions[action] = list()
            cls.actions[action].append(handler)

Code: Alles auswählen

>>> class Base(object):
...     actions = []
... 
>>> class Spam(Base): pass
... 
>>> class Eggs(Base): pass
... 
>>> id(Base.actions)
140671944032408
>>> id(Spam.actions)
140671944032408
>>> id(Eggs.actions)
140671944032408