1deflru_cache(maxsize=128, typed=False):2"""Least-recently-used cache decorator.34If *maxsize* is set to None, the LRU features are disabled and the cache5can grow without bound.6...7""" maxsize 代表被lru_cache装饰的方法最大可缓存的结果数量(被装饰方法传参不同一样,则结果不一样;如...
示例2:在decorator_time装饰器上再增加一个内置装饰器lru_cache @functools.lru_cache() @decorator_time def factorial(n): if n < 2: return n return factorial(n-2) + factorial(n-1) print(factorial(5)) [0.0000035]->[factorial]->1->1 [0.0000023]->[factorial]->0->0 [0.0000141]->[factor...
return cache.get(key, default=func(*args, **kwargs)) return wrapper 在上面的示例中,我们首先创建了一个CachetoolsCache实例,用于存储缓存项。然后定义了一个装饰器cache_decorator,它接受一个函数作为参数,并返回一个新的函数wrapper。wrapper函数使用functools.wraps来保留原始函数的元信息。在wrapper函数中,我们...
cache_dict = {}defdecorator(arg):try:returncache_dict[arg]exceptKeyError:returncache_dict.setdefault(arg, func(arg))returndecorator# @cache_decorator@lru_cache(2**10,False)deffibonacci(n):ifn <2:return1else:returnfibonacci(n -1) + fibonacci(n -2)if__name__ =='__main__': t1 = tim...
deflru_cache(maxsize=128, typed=False):"""Least-recently-used cache decorator. If *maxsize* is set to None, the LRU features are disabled and the cache can grow without bound. ... """ AI代码助手复制代码 1) maxsize 代表被lru_cache装饰的方法最大可缓存的结果数量 (被装饰方法传参不同...
这些方式毕竟还是有点繁琐,这时候就到本文的主角登场了,functools.lru_cache,看一下它的文档。 代码语言:shell AI代码解释 Signature: lru_cache(maxsize=128,typed=False)Docstring: Least-recently-used cache decorator. If *maxsize* issetto None, the LRU features are disabled and the cache ...
利用lru_cache装饰器实现通用LRU缓存 分析和设计 代码实现 前言 要进入这篇文章的主题,我们首先来了解一下Python的lru_cache装饰器。 笔者最早接触Python的lru_cache是在我的第一篇知乎文章的评论区,那时我自己独立发现了一种快速计算fib(n)(第n个斐波那契数)的算法,比较兴奋,便第一次在知乎写了一篇文章进行介绍,...
def lru_cache(maxsize=128, typed=False):"""Least-recently-used cache decorator.If *maxsize* is set to None, the LRU features are disabled and the cachecan grow without bound...""" 1) maxsize 代表被lru_cache装饰的方法最大可缓存的结果数量 (被装饰方法传参不同一样,则结果不一样;如果...
res = func(*args,**kwargs)return res return inner_b @decorator_b @decorator_a def f(x):...
def lru_cache(maxsize=128, typed=False): """Least-recently-used cache decorator. If *maxsize* is set to None, the LRU features are disabled and the cache can grow without bound. ... """ 1) maxsize 代表被lru_cache装饰的方法最大可缓存的结果数量 (被装饰方法传参不同一样,则结果不一...