python练习题(一):输入某年某月某日,判断这一天是这一年的第几天
# 题目:输入某年某月某日,判断这一天是这一年的第几天?
year = int(input("年:"))
while True:
month = int(input("月:"))
if 1 <= month <= 12:
while True:
day = int(input("日:"))
days = 0
months_1 = [0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
months_2 = [0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
if (year % 400 == 0) or (year % 4 == 0 and year % 100 != 0):
if 1 <= day <= months_2[month]:
for i in range(month):
days += months_2[i]
days += day
print("%d年%d月%d日 是%d年的第%d天" % (year, month, day, year, days))
break
else:
print("请输入正确的日期!")
else:
if 1 <= day <= months_1[month]:
for i in range(month):
days += months_1[i]
days += day
print("%d年%d月%d日 是%d年的第%d天" % (year, month, day, year, days))
break
else:
print("请输入正确的日期!")
break
else:
print("请输入正确的月份!")
程序运行结果: