python 日期换算星期 蔡勒公式

 #!/usr/bin/env python
 # encoding: utf-8

 #coding=utf-8

 date_star={
         '':'星期一',
         '':'星期二',
         '':'星期三',
         '':'星期四',
         '':'星期五',
         '':'星期六',
         '':'星期日',
         }

 def caile(*args):
     year,month,day = args
     month = int(month)
     day = int(day)
     year_one,year_two = int(str(year)[:2]),int(str(year)[2:])
     if month == 1 or month == 2:
         return (year_two-1 + (year_two-1)//4 + year_one//4 - 2*year_one + 26*(month+12+1)//10 + day -1)%7
     return (year_two + year_two//4 + year_one//4 - 2*year_one + 26*(month+1)//10 + day-1)%7

 date = raw_input('输入年份 月份 天数，空格分隔>>>>:' )

 year = date.split(' ')[0]
 month = date.split(' ')[1]
 day = date.split(' ')[2]
 year,month,day = date.split(' ')
 print "%s\n"%date,date_star['%s'%caile(year,month,day)]