题目四：输入某年某月某日，判断这一天是这一年的第几天？
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
""" 题目四：输入某年某月某日，判断这一天是这一年的第几天？"""
__author__ = 'Fan Lijun'
year = eval(input('请输入年份：'))
month = eval(input('请输入月份：'))
day = eval(input('请输入日期：'))
days = [0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365]
if (year % 4 == 0 and year % 100 != 0) or year % 400 == 0:
if month > 2:
today = days[month-1] + day + 1
else:
today = days[month-1] + day
else:
today = days[month - 1] + day
print(f'今天是{year}年的第{today}天！')