Complete exercises for Module Tools/Sprint 5/Prep - step 5 'Dataclasses'

Author: Geraldine-Edwards

prep-exercises/e_dataclasses.py

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+# class Person:
+#     def __init__(self, name: str, age: int, preferred_operating_system: str):
+#         self.name = name
+#         self.age = age 
+#         self.preferred_operating_system = preferred_operating_system
+
+# imran = Person("Imran", 22, "Ubuntu")
+# imran2 = Person("Imran", 22, "Ubuntu")
+
+# print(imran == imran2)  # Prints False
+# print(imran)  # <__main__.Person object at 0x74b1986e2990>
+
+from dataclasses import dataclass
+from datetime import date
+
+# @dataclass(frozen=True)
+# class Person:
+#     name: str
+#     age: int
+#     preferred_operating_system: str
+
+# imran = Person("Imran", 22, "Ubuntu")  # We can call this constructor - @dataclass generated it for us.
+# print(imran)  # Prints Person(name='Imran', age=22, preferred_operating_system='Ubuntu')
+
+# imran2 = Person("Imran", 22, "Ubuntu")
+# print(imran == imran2)  # Prints True
+
+
+# ------------------------
+# Exercise 1
+# ------------------------
+# Q.Write a Person class using @datatype which uses a datetime.date for date of birth, rather than an int for age.
+#   Re-add the is_adult method to it.
+
+@dataclass
+class Person:
+    name: str
+    date_of_birth: date
+    preferred_operating_system: str
+
+    def is_adult(self) -> bool:
+        today = date.today()
+        age = today.year - self.date_of_birth.year - ((today.month, today.day) < (self.date_of_birth.month, self.date_of_birth.day))
+        return age >= 18
+    
+imran = Person("Imran", date(2002, 1, 12), "Ubuntu")
+print(imran.is_adult())