lru_cache python

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于 2022-07-05 17:10:11 发布

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文章标签： python

本文链接：https://blog.youkuaiyun.com/qq_38963393/article/details/125623857

本文介绍了Python中functools模块的lru_cache()函数，它通过缓存最近调用的函数结果来减少重复计算，有效提升程序运行效率。文章详细解释了lru_cache的两个参数：maxsize用于设置缓存大小，而typed参数决定是否区分不同类型的相同值。

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lru_cache() is one function in functools module which 
	helps in reducing the execution time of the function 
		by using memoization technique.

Syntax:
@lru_cache(maxsize=128, typed=False)

Parameters:
maxsize:
	This parameter sets the size of the cache, 
		the cache can store upto maxsize most recent function calls, 
	if maxsize is set to None, 
		the LRU feature will be disabled 
		and the cache can grow without any limitations
typed:
	If typed is set to True, function arguments of different types will be cached separately. 
	For example, 
		f(3) and f(3.0) will be treated as distinct calls with distinct results 
		and they will be stored in two separate entries in the cache