import datetime
def week(year,month,day):
someday=dayetime.date(year,month,day)
result={
"0":"星期日",
"1":"星期一",
"2":"星期二",
"3":"星期三",
"4":"星期四",
"5":"星期五",
"6":星期六""
}
return result.get(someday.strftime('%w'))