给你一个字符串 date ，按 YYYY-MM-DD 格式表示一个 现行公元纪年法 日期。返回该日期是当年的第几天。

LeetCode - 1154. 一年中的第几天 

class Solution:
    def dayOfYear(self, date: str) -> int:
        year, month, day = map(int, date.split('-'))
        days = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
        if year % 4 == 0 and year % 100 != 0 or year % 400 == 0:
            days[1] = 29
        i = 0
        _sum = day
        while i < month - 1:
            _sum += days[i]
            i += 1
        return _sum


if __name__ == '__main__':
    print(Solution().dayOfYear("2000-03-09"))