Used list imported from typing to specify the type of the items in the list

Author: gai93003

prep exercises/generic_exercise.py

@@ -0,0 +1,22 @@
+from dataclasses import dataclass
+from typing import List
+
+@dataclass(frozen=True)
+
+class Person:
+    name: str
+    children: List["Person"]
+    age: int
+
+fatma = Person(name="Fatma", children=[], age=25)
+aisha = Person(name="Aisha", children=[], age = 15)
+
+imran = Person(name="Imran", children=[fatma, aisha], age = 40)
+
+def print_family_tree(person: Person) -> None:
+    print(person.name)
+    
+    for child in person.children:
+        print(f"- {child.name} ({child.age})")
+
+print_family_tree(imran)