Python、C# 问题-闰年判断

Question

如图问题所示：
判断闰年是否有这个日期，有输出1，没有，输出-1，请问如何写代码？

Answer 1

from datetime import datetime

cur_date = datetime.now().strftime('%Y-%m-%d').split('-')

cur_date = input('请输入要计算的日期，例：2021-3-5：').split('-')
print(cur_date) # 2021-3-5
cur_year = int(cur_date[0])
cur_month = int(cur_date[1])
cur_day = int(cur_date[2])

month_day = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
if cur_year % 400 == 0 or (cur_year % 4 == 0 and cur_year % 100 != 0):
month_day[1] = 29
if cur_month == 1:
days = cur_day
else:
days = -1 #sum(month_day[0:cur_month - 1]) + cur_day

print(days)