feat: rename file names

class_person.py

@@ -0,0 +1,19 @@
+#!/usr/bin/env python3
+
+class Person():
+    def __init__(self, name, age):
+        self.name = name
+        self.age = age
+
+    def __repr__(self):
+        return repr((self.name, self.age))
+
+people = [
+    Person("tom", 22),
+    Person("jack", 11),
+    Person("jerry", 33)
+]
+
+if __name__ == "__main__":
+    sorted_people = sorted(people, key=lambda person: person.age)
+    print(sorted_people)