feat: Used dataclass decorator instead of the manual _init_.

Author: jamallaqdiem

prep-exercises/dataclass.py

@@ -0,0 +1,19 @@
+from  dataclasses import dataclass
+import datetime as dt
+
+@dataclass(frozen=True)
+class Person:
+    name: str 
+    preferred_operating_system: str
+    date_of_birth: dt.date
+    
+    def is_adult(self) -> bool:
+        today = dt.date.today()
+        age = today.year - self.date_of_birth.year
+        if (today.month, today.day) < (self.date_of_birth.month, self.date_of_birth.day):
+            age -= 1
+        return age >= 18
+imran = Person("Imran", "Ubuntu", dt.date(2009, 1, 24))
+print(f"Is Imran an adult? {imran.is_adult()}")
+
+