利用python可以编写的用于测试网站访问速率的代码，实现原理是输出打开某url的时间，并计算出访问100次的平均时间，最大时间和最小时间等等。根据时间的变化判断网站速度。
完整代码：
import urllib2
from datetime import *
import time
def Process(url,n):
minSpan = 10.0
maxSpan = 0.0
sumSpan= 0.0
over1s = 0
for i in range(n):
startTime = datetime.now()
try:
res = urllib2.urlopen(url,timeout=10)
except:
pass
endTime = datetime.now()
span = (endTime-startTime).total_seconds()
sumSpan = sumSpan + span
if span < minSpan:
minSpan = span
if span > maxSpan:
maxSpan = span
#超过一秒的
if span>1:
over1s=over1s + 1
print(u'%s Spent :%s seconds'%(url,span))
print(u'requested:%s times,Total Spent:%s seconds,avg:%s seconds, max:%s seconds,min:%s seconds,over 1 secnod:%s times'%(n,sumSpan,sumSpan/n,maxSpan,minSpan,over1s))
print('\n')
if __name__=='__main__':
Process('http://www.baidu.com',100)运行结果如下：
http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.094 seconds http://www.baidu.com Spent :0.016 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.032 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.032 seconds http://www.baidu.com Spent :0.016 seconds http://www.baidu.com Spent :0.015 seconds http://www.baidu.com Spent :0.015 seconds http://www.baidu.com Spent :0.016 seconds http://www.baidu.com Spent :0.032 seconds http://www.baidu.com Spent :0.046 seconds http://www.baidu.com Spent :0.032 seconds http://www.baidu.com Spent :0.094 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.109 seconds http://www.baidu.com Spent :0.094 seconds http://www.baidu.com Spent :0.094 seconds http://www.baidu.com Spent :0.032 seconds http://www.baidu.com Spent :0.062 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.047 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.032 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.015 seconds http://www.baidu.com Spent :0.032 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.032 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.047 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.032 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.032 seconds http://www.baidu.com Spent :0.016 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.032 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.016 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.032 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.015 seconds http://www.baidu.com Spent :0.016 seconds http://www.baidu.com Spent :0.016 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.015 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.032 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.032 seconds http://www.baidu.com Spent :0.078 seconds http://www.baidu.com Spent :0.109 seconds http://www.baidu.com Spent :0.015 seconds http://www.baidu.com Spent :0.094 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.032 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.109 seconds http://www.baidu.com Spent :0.094 seconds http://www.baidu.com Spent :0.032 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.047 seconds http://www.baidu.com Spent :0.032 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.032 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.031 seconds http://www.baidu.com Spent :0.031 seconds requested:100 times,Total Spent:3.67 seconds,avg:0.0367 seconds, max:0.109 seconds,min:0.015 seconds,over 1 secnod:0 times
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