仅有尝试过,努力过,坚持过,才能有收获。一分耕耘,一分收获,仅有努力了,才能绽放出成功的花朵。只要功夫深,铁杵磨成针。我相信,只要我朝着这个梦想努力奋斗,坚持不懈,那么,我就必须会成功!
本文实例讲述了Python中list查询及所需时间计算操作。分享给大家供大家参考,具体如下:
# -*-coding=utf-8 -*- #! python2 #filename: list_query #date: 2018-03-25 #author: guosw import time def cost_time(fun): def cost(*args,**kwargs): stime = time.time() x = fun(*args,**kwargs) etime = time.time() print "function name:",fun.__name__ print "time cost:",etime-stime return x return cost @cost_time def list_query(_list,_val): low = 0 height = len(i) - 1 mid = (height - low) // 2 for n in xrange(height+1): if _list[n] == _val: return n for n in xrange(mid,height+1): if _list[n] == _val: return n if __name__ == "__main__": i = xrange(100000) subscript = list_query(i,9999) print subscript
运行结果:
function name: list_query
time cost: 0.00100016593933
9999
希望本文所述对大家Python程序设计有所帮助。
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