script_7.py - Leap Year Checker

Code

#!/usr/bin/env python3
"""Leap year checker"""

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

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")

Explanation

Line 4: year = int(input("Enter a year: ")) - input() returns string type (str) - int() converts to integer type (int) - year stores the integer value

Line 6: if year % 4 == 0 and (year % 100 != 0 or year % 400 == 0): - Complex boolean expression with multiple operators - % is modulo operator (returns remainder) - year % 4 == 0 checks if divisible by 4 - and requires both sides to be True - Parentheses () control order of evaluation - != is "not equal to" operator - year % 100 != 0 checks if NOT divisible by 100 - or returns True if EITHER side is True - year % 400 == 0 checks if divisible by 400 - Leap year logic: divisible by 4, unless divisible by 100 (but if divisible by 400, still a leap year)

Line 7: print(f"{year} is a leap year") - f-string embeds the year variable - {} placeholder gets replaced with variable value

Line 8: else: - Handles all non-leap years