python 使用年月日判断该天是否为周末

def isLUN(year):
    if year%100==0:
        if year%400==0:
            return 1
    else:
        if year%4==0:
            return 1
    return 0

def dijitian(YEAR,Month,day):
    ret=0
    ping=[31,28,31,30,31,30,31,31,30,31,30,31]
    lun=[31,29,31,30,31,30,31,31,30,31,30,31]
    if isLUN(YEAR):
        for i in range(Month-1):
            ret=ret+lun[i]
    else:
         for i in range(Month-1):
            ret=ret+ping[i]
    return ret+day;
        
            

def jiejiari(YEAR,Month,day):
    S=(YEAR+(YEAR-1)//4-(YEAR-1)//100+(YEAR-1)//400)%7
    days=(dijitian(YEAR,Month,day)+S-1)%7
    #return days
    if days==0 or days==6:
        return 1
    else :
        return 0

返回 0代表周末 1代表周一和周五 

使用 return days时 0->周末 1->周一

def isLUN(year):    if year%100==0:        if year%400==0:            return 1    else:        if year%4==0:            return 1    return 0
def dijitian(YEAR,Month,day):    ret=0    ping=[31,28,31,30,31,30,31,31,30,31,30,31]    lun=[31,29,31,30,31,30,31,31,30,31,30,31]    if isLUN(YEAR):        for i in range(Month-1):            ret=ret+lun[i]    else:         for i in range(Month-1):            ret=ret+ping[i]    return ret+day;                    
def jiejiari(YEAR,Month,day):    S=(YEAR+(YEAR-1)//4-(YEAR-1)//100+(YEAR-1)//400)%7    days=(dijitian(YEAR,Month,day)+S-1)%7    return days    if days==0 or days==6:        return 1    else :        return 0