thecoded.prof
CMU Coding Bootcamp
1def isLeapYear(year: int) -> bool:
2 """Return True if year is a leap year, False otherwise."""
3 if year <= 0:
4 return False
5 # 4 years v 400 years v not 100 years v
6 return not (year % 4 or (year % 400 and not year % 100))
7
8
9print("Testing isLeapYear()...", end="")
10assert isLeapYear(2024) == True
11assert isLeapYear(2023) == False
12assert isLeapYear(2020) == True
13assert isLeapYear(1900) == False # divisible by 100 but not by 400
14assert isLeapYear(2000) == True # divisible by 100 but also by 400
15assert isLeapYear(-2024) == False # non-positive years are not leap years
16assert isLeapYear(0) == False # non-positive years are not leap years
17print("Passed!")