make the func print_family_tree print recursively

Author: HassanOHOsman

prep-exercises/exercise_nine.py

@@ -8,9 +8,12 @@ class Person:
     age: int
     children: List["Person"]
 
+#Add a grandchild to the main object imran 
+khaled = Person(name="Khaled", age=6, children=[])
+
 #Add "age" field and thier respective values to "fatma" and "aisha" - instances of class "Person"
 fatma = Person(name="Fatma", age=14, children=[])
-aisha = Person(name="Aisha",age=22, children=[])
+aisha = Person(name="Aisha",age=22, children=[khaled])
 
 ##Add "age" field and its values to "imran" -  instance of class "Person"
 imran = Person(name="Imran", age=44, children=[fatma, aisha])
@@ -19,6 +22,7 @@ def print_family_tree(person: Person) -> None:
     print(person.name)
     for child in person.children:
         print(f"- {child.name} ({child.age})")
+        print_family_tree(child)
 
 print_family_tree(imran)