类的Python functools.wraps等效项

类的Python functools.wraps等效项

每个人似乎都错过了显而易见的解决方案。

>>> import functools>>> class memoized(object):    """Decorator that caches a function's return value each time it is called.    If called later with the same arguments, the cached value is returned, and    not re-evaluated.    """    def __init__(self, func):        self.func = func        self.cache = {}        functools.update_wrapper(self, func)  ## TA-DA! ##    def __call__(self, *args):        pass  # Not needed for this demo.>>> @memoizeddef fibonacci(n):    """fibonacci docstring"""    pass  # Not needed for this demo.>>> fibonacci<__main__.memoized object at 0x0156DE30>>>> fibonacci.__name__'fibonacci'>>> fibonacci.__doc__'fibonacci docstring'