python判断输入日期是该年的第几天

iyear = int(input("请输入年：\n"))
imonth = int(input("请输入月：\n"))
iday = int(input("请输入日：\n"))



def checkYear(iyear):
    return ((iyear % 4 == 0 and iyear % 100 != 0) or iyear % 400 == 0)


tol_day = 0

for i in range(1, imonth):
    # tol_day+=lis[i]
    if i in [1, 3, 5, 7, 8, 10, 12]:
        tol_day += 31
    elif i == 2:
        tol_day += 28
        if checkYear(iyear):
            tol_day += 1
    else:
        tol_day += 30
tol_day += iday
print(tol_day)

或者：
lis = [0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
#如果是闰年的话，2月份加一天
if checkYear(year):
    lis[2] += 1
#遍历一次days，对应月份中的天数,把对应的天数传递给tol_day存储
for i in range(month):
    tol_day+= lis[i]
print(tol_day+iday)
iyear = int(input