add encapsulation stretch task

Author: l

sprint-5/09-encapsulation.py

@@ -0,0 +1,34 @@
+class Person:
+    def __init__(self, name: str, age: int):
+        self.name = name
+        self.__age = age
+
+    def is_adult(self):
+      return self.__age >= 18
+
+imran = Person("Imran", 22)
+print(imran.name)
+print(imran.age) # fails
+print(imran.__age) # fails
+print(imran.is_adult()) # works and prints True
+
+eliza = Person("Eliza", 12)
+print(eliza.name)
+print(eliza.age) # fails
+print(imran.__age) # fails
+print(eliza.is_adult()) # works and prints False
+
+# Task 9
+# Read through Python encapsulation
+# https://www.w3schools.com/python/python_encapsulation.asp
+# and think about some of the benefits that encapsulation can add to a class.
+#
+# Do some further research of your own to learn about encapsulation.
+#
+# Think of some examples and in your own words write down some benefits and trade-offs of using encapsulation in classes:
+#
+#
+#
+
+# Stretch Task
+# Make the name property private, and add a get_name() method to make it read only.