Question 08:
Write a Python program to check whether a given year is a leap year or not.

Answer:
def main(year: int) -> None:
    if (year % 4 == 0 and year % 100 != 0) or (year % 400 == 0):
        print(f"{year} is a leap year.")
    else:
        print(f"{year} is not a leap year.")

if __name__ == '__main__':
    main(2020)
    main(2021)


Output:
2020 is a leap year.
2021 is not a leap year.