To get the most out of your setup, consider these best practices:

def get_all_students(self): """Return all students sorted by name""" return sorted(self.students.values(), key=lambda s: s.name)

# Try to load existing data manager.load_from_file()

import os

def __str__(self): return f"self.student_id | self.name | Age: self.age | Grade: self.grade"

elif choice == '6': # Save data manager.save_to_file()

def save_to_file(self, filename='students.json'): """Save student data to JSON file""" data = [student.to_dict() for student in self.students.values()] with open(filename, 'w') as f: json.dump(data, f, indent=2) print(f"✓ Data saved to filename")