Check a Year is Leap Year or Not in Python

In [1]:

year = int (input('Enter a year:'))

​

if year < 0:

    print ('Enter a Valid Year.')

elif year % 400 == 0:

    print (year, ' is a Leap Year.')

elif year % 4 == 0 and year % 100 != 0:

    print (year, ' is a Leap Year.')

else:

    print (year, 'Not a Leap Year.')

Enter a year:2012
2012  is a Leap Year.