python编写的用于测试网站访问速率的代码片段，可以输出打开某url的时间，访问100次的平均时间，最大时间和最小时间等等
def Process(url,n):
minSpan = 10.0
maxSpan = 0.0
sumSpan= 0.0
over1s = 0
for i in range(n):
startTime = datetime.datetime.now()
try:
res = urllib2.urlopen(url,timeout=10)
except:
pass
endTime = datetime.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)
