def __str__(self): return f"self.student_id | self.name | Age: self.age | Grade: self.grade" class StudentManager: """Manages collection of students"""
def __init__(self, student_id, name, age, grade): self.student_id = student_id self.name = name self.age = age self.grade = grade self.created_at = datetime.now() python in netbeans
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") def __str__(self): return f"self
def main(): """Main program loop""" manager = StudentManager() 'w') as f: json.dump(data
class Student: """Student class with basic information"""