Ray's playground

摘要： The formal definitions associated with the Big Oh notation are as follows:　　• f(n) = O(g(n)) means c · g(n) is an upper bound on f(n). Thus there existssome constant c such that f(n) is alw... 阅读全文

摘要： decoratorCode highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--1>>>importtime2>>>deflog_calls(func):3defwrapper(*args,**kwargs):4now=time.... 阅读全文