Student-Result-management-system-class Student:

def __init__(self, roll_no, name, marks):
    self.roll_no = roll_no
    self.name = name
    self.marks = marks

class StudentMarksManagementSystem: def init(self): self.students = []

def add_student(self, roll_no, name, marks):
    student = Student(roll_no, name, marks)
    self.students.append(student)
    print(f"Student {name} added successfully.")

def display_students(self):
    if not self.students:
        print("No student records available.")
        return

    for student in self.students:
        print(f"Roll No: {student.roll_no}, Name: {student.name}, Marks: {student.marks}")

def calculate_average_marks(self):
    if not self.students:
        print("No student records available.")
        return

    total_marks = sum(student.marks for student in self.students)
    average_marks = total_marks / len(self.students)
    print(f"Average Marks: {average_marks:.2f}")

Example Usage

sms = StudentMarksManagementSystem() sms.add_student(1, 'Alice', 85) sms.add_student(2, 'Bob', 90) sms.add_student(3, 'Charlie', 78)

sms.display_students() sms.calculate_average_marks()