python 计算程序运行时长(毫秒)

插入到程序首行

import datetime
import time
t1 = datetime.datetime.now().microsecond
t2 = time.mktime(datetime.datetime.now().timetuple()

插入到程序末尾

t3 = datetime.datetime.now().microsecond
t4 = time.mktime(datetime.datetime.now().timetuple())
strTime = 'funtion time use:%dms' % ((t4 - t2) * 1000 + (t3 - t1) / 1000)
print(strTime)

tips：计算不出运行时间较短的程序