从键盘输入某年某月（包括闰年），编程输出该年的该月拥有的天数。 **输入格式要求："%d,%d" 提示信息："Input year,month:" "The number of days is %d\n" **输出格式要求："%d" 程序运行示例1如下： Input year,month:1984,2 The number of days is 29 程序运行示例2如下： Input year,month:2000,2 The number of days is 29 程序运行示例3如下： Input year,month:1985,2 The number of days is 28 程序运行示例4如下： Input year,month:1983,13 Input year,month:1983,-1 Input year,month:1983,1 The number of days is 31

以下是 Python 代码实现：

year, month = input("Input year,month:").split(',')
year, month = int(year), int(month)

if month < 1 or month > 12:
    print("Invalid month!")
else:
    if month == 2:
        if year % 4 == 0 and (year % 100 != 0 or year % 400 == 0):
            days = 29
        else:
            days = 28
    elif month in [4, 6, 9, 11]:
        days = 30
    else:
        days = 31

    print("The number of days is %d" % days)

运行示例：

Input year,month:1984,2
The number of days is 29

Input year,month:2000,2
The number of days is 29

Input year,month:1985,2
The number of days is 28

Input year,month:1983,13
Invalid month!

Input year,month:1983,-1
Invalid month!

Input year,month:1983,1
The number of days is 31