generics

Author: Nataliia74

familytree.py

@@ -0,0 +1,20 @@
+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=17)
+aisha = Person(name="Aisha", children=[], age=25)
+
+imran = Person(name="Imran", children=[fatma, aisha], age=51)
+
+def print_family_tree(person: Person) -> None:
+    print(person.name, f"({person.age})")
+    for child in person.children:
+        print(f"- {child.name} ({child.age})")
+
+print_family_tree(imran)