attrmap.py 文件源码

def hook__setattr__(obj):
    if not hasattr(obj,'__attrproxy__'):
        C = obj.__class__
        import new
        obj.__class__=new.classobj(C.__name__,(C,)+C.__bases__,
            {'__attrproxy__':[],
            '__setattr__':lambda self,k,v,osa=getattr(obj,'__setattr__',None),hook=hook: hook(self,k,v,osa)})