dateType= input('請輸入年月日的格式為:yyyymmdd: ')
y = int(dateType[:4])
m = int(dateType[5:6])
d = int(dateType[7:])

rn = False
if (y%100 == 0 and y%400 == 0) or y%4 ==0:
    rn = True

if rn == True:
    mo = [31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
else:
    mo = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]

days = 0
for i in range(1,m):
    days += mo[i-1]
print('這是今年的第 %s 天'%(days+d))

python練習題1