**leap year:-** A leap year is a calendar year which has 366 days. The extra day is a 29 February.

Every four year is a leap year.

#### How to

- If a year is not divisible by 4,100 and 400, then it is not a leap year.
- If a year is divisible by 4 and not 100, then it is not a leap year.
- If a year is divisible by both 4 and 100 and 400, then it is not a leap year.
- If a year is divisible by 4, 100 and 400, then it is a leap year.

#### Program

y=int(input("Please enter the year: ")) if(y%4)==0: if(y%100)==0: if(y%400)==0: print("{0} is a leap year".format(y)) else: print("{0} is not a leap year".format(y)) else: print("{0} is a leap year".format(y)) else: print("{0} is not a leap year".format(y))

#### Ourput:-

Please enter the year: 2019

2019 is not a leap year