if a == '1':
print('星期一')
elif a == '2':
print('星期二')
elif a == '3':
print('星期三')
elif a == '4':
print('星期四')
elif a == '5':
print('星期五')
elif a == '6':
print('星期六')
elif a == '7':
print('星期日')
else:
print('数字无效')
#蔡勒公式:w=y+[y/4]+[c/4]-2c+[26(m+1)/10]+d-1import math
dict = {1: “星期一”, 2: “星期二”, 3: “星期三”, 4: “星期四”, 5: “星期五”, 6: “星期六”, 0: “星期天”}
while 1:
y=int(input(“请输入年份”))
m=int(input(“请输入月份”))
d=int(input(“请输入天”))
if m1 :
m=13
y=y-1
elif m2:
m=14
y=y-1
allday=math.floor((y-1)+(y-1)/4-(y-1)/100+(y-1)/400+13*(m+1)/5+(m-1)*28-7+d)
x=allday%7
print(dict.get(x))