python中的time模块测试程序运行时间

首先导入time模块，在程序执行开始start=time.time(),在程序执行结束后加入end=time.time()，则end-start就是这段程序运行的时间

import  time def sum(n):     start=time.time()     theSum=0     for i in range(1,n+1):         theSum=theSum+i              end=time.time()     return theSum,end-start

for j in range(5):     print("sum id %d ,time is %10.7f"% sum(100000))

 

运行结果：sum id 5000050000 ,time is  0.0090039 sum id 5000050000 ,time is  0.0120089 sum id 5000050000 ,time is  0.0120089 sum id 5000050000 ,time is  0.0090044 sum id 5000050000 ,time is  0.0110099