edits

solutions/leap_year.py

@@ -0,0 +1,31 @@
+"""
+The module checks whether a given year is a leap year.
+
+A year is a leap year if it is divisible by 4,
+and if it is divisible by 100, it must also be divisible by 400.
+"""
+
+def leap_year(year: int) -> bool:
+    """
+    Checks whether the given year is a leap year.
+    
+    Argument:
+    year, a positive integer
+    
+    Returns:
+    boolean: True if the year is a leap year, false otherwise.
+    
+    Examples: 
+    >>> leap_year(2024)
+    True
+    >>> leap_year(1900)
+    False
+    >>> leap_year(2021)
+    False
+    """
+    if not isinstance(year, int):
+        raise ValueError("Year must be an integer")
+    if year < 0:
+        raise ValueError("Year must be positive integer")
+
+    return(year % 4 == 0 and year % 100 != 0) or (year % 400 == 0)