Python program to check a year is a leap year or not. Below is a code snippet,

# To check if the year is a leap year or not in Python

year = int(input("Enter a year to check : "))

if ((year % 4) == 0 and (year % 100) != 0) or ((year % 400) == 0):
    print("{0} is a leap year".format(year))
else:
    print("{0} is not a leap year".format(year))

Output 1:

Enter a year to check: 2020
2020 is a leap year

Output 2:

Enter a year to check: 2021
2021 is not a leap year