Add methods-exercise2.py: refactor Person class to use date_of_birth

- Replace age (int) parameter with date_of_birth (datetime.date)
- Convert is_adult() from free function to instance method
- Implement dynamic age calculation based on current date
- Account for whether birthday has occurred this year
- Add type hints for all parameters and return types
- Include example usage with imran and eliza instances

Author: Iswanna

prep/methods-exercise2.py

@@ -0,0 +1,25 @@
+from datetime import date
+
+class Person:
+    def __init__(self, name: str, date_of_birth: date, preferred_operating_system: str):
+        self.name = name
+        self.date_of_birth = date_of_birth
+        self.preferred_operating_system = preferred_operating_system
+
+    def is_adult(self) -> bool:
+        today = date.today()
+        age = today.year - self.date_of_birth.year
+        
+        # Check if birthday has occurred this year
+        if (today.month, today.day) < (self.date_of_birth.month, self.date_of_birth.day):
+            age -= 1
+        
+        return age >= 18
+
+imran = Person("Imran", date(2002, 5, 15), "Ubuntu")
+print(imran.name)
+print(imran.is_adult())
+
+eliza = Person("Eliza", date(1990, 3, 20), "Arch Linux")
+print(eliza.name)
+print(eliza.is_adult())