Python计算两个日期相差天数的方法示例

#!/usr/bin/python
import time
import sys
def dateinput():
    date = raw_input('please input the first date: ')
    return date
def datetrans(tdate):
    spdate = tdate.replace("/","-")
    try:
        datesec = time.strptime(spdate,'%Y-%m-%d')
    except ValueError:
        print "%s is not a rightful date!!" % tdate
        sys.exit(1)
    return time.mktime(datesec)
def daysdiff(d1,d2):
    daysec = 24 * 60 * 60
    return int(( d1 - d2 )/daysec)
date1 = dateinput()
date2 = dateinput()
date1sec = datetrans(date1)
date2sec = datetrans(date2)
print "The number of days between two dates is: ",daysdiff(date1sec,date2sec)