1.输入年、月，输出本月有多少天
2004 2
29天
2010 4
30天
"""
#_*_coding:utf-8_*_
Name:01_work.py
Date:1/12/19
Author:
Connect:[email protected]
Desc:
"""
year=int(input('请输入年份：'))
mon=int(input('请输入月份：'))
if ((year % 4 == 0 and year % 100 != 0) or (year % 400 == 0)) \
and ( mon == 2 ):
print('29天')
elif ( mon == 2):
print('28天')
elif ( mon == 1 ) or ( mon == 3 ) or ( mon == 5 ) or ( mon == 7 ) or ( mon == 8 ) or (mon == 10) or (mon == 12):
print('31天')
elif ( mon == 4 ) or ( mon == 6 ) or ( mon == 9 ) or ( mon == 11 ):
print('30天')
else:
print('请输入合理的年月')
2.用if判断输入的值是否为空，如果为空，报错Error
"""
#_*_coding:utf-8_*_
Name:error.py
Data:1/12/19
Author:westos-sql
Connect:[email protected]
Desc:
"""
num = str(input('please input num'))
if num == "":
print('Error')
else:
print('Right')
3.用户输入月份，打印该月份所属的季节
3，4，5春季 6，7，8夏季 9，10，11秋季 12 1 2冬季
"""
#_*_coding:utf-8_*_
Name:season.py
Data:1/12/19
Author:westos-sql
Connect:[email protected]
Desc:
"""
month = int(input('please input month :'))
if 3 <= month <= 5:
print('spring')
elif 6 <= month <= 8:
print('summer')
elif 9 <= month <= 11:
print('fall')
else:
print('winter')
```