add types to prep2 & change class property and method

Author: sheida-shab

sprint5-prep/prep2-exercise.py

@@ -1,4 +1,4 @@
-def open_account(balances, name, amount):
+def open_account(balances: dict[str,int], name : str, amount:int):
     balances[name] = amount
 
 def sum_balances(accounts):

sprint5-prep/prep4-exercise.py

@@ -0,0 +1,16 @@
+import datetime
+class Person:
+    def __init__(self, name: str, date_of_birth : datetime.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):
+        today=datetime.date.today()
+        age=today.year-self.date_of_birth.year
+        print(age)
+        return age >= 18
+
+imran = Person("Imran",  datetime.date(1998,4,3), "Ubuntu")
+print(imran.is_adult())
+eliza = Person("Eliza",datetime.date(2013,3,17), "Arch Linux")
+print(eliza.is_adult())