Python object proxy

proxy.py

'''
An implementation object proxy pattern in python

Example::
    from proxy import Proxy
    
    class A(object):
      def __init__(self, base):
        self.base = base
      def plus(self, *a):
        return sum(a) + self.base
    
    _a = A()
    a = Proxy(a)
    print(a.plus(3,4,5))
'''

class Proxy(object):

    def __init__(self, wrapped):
        self.__dict__['__wrapped__'] = wrapped
        try:
            self.__name__ = wrapped.__name__
        except AttributeError:
            pass

    @property
    def __class__(self):
        return self.__wrapped__.__class__

    def __getattr__(self, name):
        return getattr(self.__wrapped__, name)

    def __setattr__(self, name, value):
        setattr(self.__wrapped__, name, value)

def main():
    class A(object):
        def plus(self, *a):
            return sum(a)

    _a = A()
    a = Proxy(_a)
    
    print(a.__class__.__name__)
    print(a.plus(5, 6, 7))
    
    a.hello = 'world'
    print(_a.hello)

if __name__ == "__main__":
    main()