求两个日期间相隔的天数

这两天在网上看到了一道求两个日期间相隔天数的题目,想到了一个实现的方法:

import time
time1 = raw_input("Please input time1:")
time2 = raw_input("Please input time2:")
timeStamp1 = int(time.mktime(time.strptime(time1,"%Y-%m-%d")))
timeStamp2 = int(time.mktime(time.strptime(time2,"%Y-%m-%d")))
diff = abs(timeStamp1 - timeStamp2)
print diff/24/60/60