The rules to check a leap year are:
- The year has to be divisible by four, that is, the remainder of the division is 0.
- The year cannot be divisible by 100, that is, the remainder of the division is different from 0.
- The exception for the second rule is when the year is divisible by 400, that is, the remainder of the division is 0.
To get the remainder of a division we use the modulus operator %.
The following code implements the aforementioned rules.
def check_leap_year(year):
if year % 4 == 0 and (year % 100 != 0 or year % 400 == 0):
print(year, 'is a leap year!')
else:
print(year, 'is not a leap year!')
check_leap_year(1700)
#output: 1700 is not a leap year!
check_leap_year(1920)
#output: 1920 is a leap year!
check_leap_year(1967)
#output: 1967 is not a leap year!
check_leap_year(2000)
#output: 2000 is a leap year!
check_leap_year(2016)
#output: 2016 is a leap year!If you want to know more about the if statement, check out this post Conditionals in Python.