Python In Netbeans Online

def __init__(self): self.students = {}

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 find_student(self, student_id): """Find a student by ID""" return self.students.get(student_id) python in netbeans

def __str__(self): return f"self.student_id | self.name | Age: self.age | Grade: self.grade" class StudentManager: """Manages collection of students"""

def to_dict(self): """Convert student object to dictionary for JSON serialization""" return 'student_id': self.student_id, 'name': self.name, 'age': self.age, 'grade': self.grade, 'created_at': self.created_at.isoformat() def __init__(self): self

def get_average_grade(self): """Calculate average grade of all students""" if not self.students: return 0 total = sum(s.grade for s in self.students.values()) return total / len(self.students)

# Try to load existing data manager.load_from_file() 'w') as f: json.dump(data

def remove_student(self, student_id): """Remove a student by ID""" if student_id in self.students: removed = self.students.pop(student_id) print(f"✓ Student removed.name removed successfully!") return True print(f"Student with ID student_id not found!") return False