python-判断是不是闰年

 1 #coding:utf-8
 2 def isYear(year):  
 3     if (year%4 == 0) & (year%100 != 0):  
 4         print("%d年是闰年" %year)  
 5     elif year%400 == 0:  
 6         print("‘%d‘年是闰年" %year)  
 7     else:  
 8         print("‘%d‘不年是闰年" %year) 
 9 
10 
11 if __name__ =="__main__":
12     while True:
13         year=int(raw_input("please input a year:"))
14         if year == "exit":
15             print u"程序已结束！"
16             break
17         else:
18             isYear(year)
19