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：
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# -*-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
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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。
原文链接：https://blog.csdn.net/gswcfl/article/details/79738435