Student Management System Project in Python with Source Code

Managing student records is a frequent requirement in educational institutions. Today, we'll design a basic Student Management System using Python, one of the most versatile languages available. This beginner-friendly tutorial will guide you through creating a system with essential CRUD operations (Create, Read, Update, and Delete). 

Objective 

To develop a simple Python program that allows the user to:

• Add a student's details
• Display all students
• Update student details 
• Delete a student

Implementation 

Let's start by defining our student data model.

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

This simple Student class will help us encapsulate and manage student data. 

Storage For the sake of simplicity, we'll use a list to store our student data:

students = []

CRUD Operations 

Create:

def add_student():
    roll_no = int(input("Enter roll number: "))
    name = input("Enter name: ")
    marks = float(input("Enter marks: "))
    student = Student(roll_no, name, marks)
    students.append(student)
    print(f"Student {name} added successfully!")

Read:

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

Update:

def update_student():
    roll_no = int(input("Enter the roll number of the student to update: "))
    for student in students:
        if student.roll_no == roll_no:
            student.name = input("Enter new name: ")
            student.marks = float(input("Enter new marks: "))
            print("Student details updated!")
            break
    else:
        print("Student not found!")

Delete:

def delete_student():
    roll_no = int(input("Enter the roll number of the student to delete: "))
    for index, student in enumerate(students):
        if student.roll_no == roll_no:
            del students[index]
            print(f"Student with roll number {roll_no} deleted!")
            break
    else:
        print("Student not found!")

User Interaction:

We will use a simple loop to allow user interaction:

def main():
    while True:
        choice = input("""
        1. Add student
        2. Display students
        3. Update student
        4. Delete student
        5. Exit
        Enter your choice: """)
        
        if choice == '1':
            add_student()
        elif choice == '2':
            display_students()
        elif choice == '3':
            update_student()
        elif choice == '4':
            delete_student()
        elif choice == '5':
            break
        else:
            print("Invalid choice. Please try again.")

if __name__ == "__main__":
    main()

Code Explanation 

We began by defining a Student class to represent student data. 

The four functions (add_student, display_students, update_student, delete_student) implement our CRUD operations. 

The main() function drives our application, presenting a menu to the user and responding to their choices.

Complete Source Code of Student Management System with Output

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

students = []

def add_student():
    roll_no = int(input("Enter roll number: "))
    name = input("Enter name: ")
    marks = float(input("Enter marks: "))
    student = Student(roll_no, name, marks)
    students.append(student)
    print(f"Student {name} added successfully!")

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

def update_student():
    roll_no = int(input("Enter the roll number of the student to update: "))
    for student in students:
        if student.roll_no == roll_no:
            student.name = input("Enter new name: ")
            student.marks = float(input("Enter new marks: "))
            print("Student details updated!")
            break
    else:
        print("Student not found!")

def delete_student():
    roll_no = int(input("Enter the roll number of the student to delete: "))
    for index, student in enumerate(students):
        if student.roll_no == roll_no:
            del students[index]
            print(f"Student with roll number {roll_no} deleted!")
            break
    else:
        print("Student not found!")

def main():
    while True:
        choice = input(""" 1. Add student
        2. Display students
        3. Update student
        4. Delete student
        5. Exit
        Enter your choice: """)
        
        if choice == '1':
            add_student()
        elif choice == '2':
            display_students()
        elif choice == '3':
            update_student()
        elif choice == '4':
            delete_student()
        elif choice == '5':
            break
        else:
            print("Invalid choice. Please try again.")

if __name__ == "__main__":
    main()

Output:

1. Add student
2. Display students
3. Update student
4. Delete student
5. Exit
Enter your choice: 1
Enter roll number: 100
Enter name: Ramesh
Enter marks: 90
Student Ramesh added successfully!
1. Add student
2. Display students
3. Update student
4. Delete student
5. Exit
Enter your choice: 2
Roll No: 100, Name: Ramesh, Marks: 90.0
1. Add student
2. Display students
3. Update student
4. Delete student
5. Exit
Enter your choice: 3
Enter the roll number of the student to update: 100
Enter new name: Ram
Enter new marks: 70
Student details updated!
1. Add student
2. Display students
3. Update student
4. Delete student
5. Exit
Enter your choice: 2
Roll No: 100, Name: Ram, Marks: 70.0
1. Add student
2. Display students
3. Update student
4. Delete student
5. Exit
Enter your choice: 4
Enter the roll number of the student to delete: 4
Student not found!
1. Add student
2. Display students
3. Update student
4. Delete student
5. Exit
Enter your choice: 5

Conclusion 

This Python-based Student Management System offers a fundamental introduction to CRUD operations. It's simple and extensible. If you're up for a challenge, consider enhancing it by adding data validation, storing student data in a file, or incorporating more advanced features! Happy coding!

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