Year 2000 is a leap year
Input
2000
Output
True
2000 is divisible by 400, so it's a leap year.
Full lesson preview
Is Leap Year
Determine whether a given year is a leap year following Gregorian rules.
Python practice14 minControl Flow (If–Else Logic)IntermediateLast updated March 15, 2026
Problem statement
A year is a leap year if it is divisible by 4. However, years divisible by 100 are not leap years unless they are also divisible by 400. Implement is_leap_year(year) that applies these rules and returns True for leap years and False otherwise.
Task
Write a function that returns True if a year is a leap year and False otherwise, using if/elif/else logic.
Examples
Input format
A single integer representing the year (e.g., 2024).
Output format
Return True if the year is a leap year, otherwise return False.
Constraints
Year is an integer. You may assume typical historical year ranges (positive and negative integers allowed), but apply the divisibility rules strictly.
Samples
Sample 1
Input
1900
Output
False
1900 is divisible by 100 but not by 400, so it's not a leap year.