The system's interface presents a menu of six operations:

1. Add a new student record.
2. Delete an exsiting student record.
3. Update a student's details.
4. Search for a student by name.
5. Display the complete student roster.
6. Terminate the program.

Users select an operation by entering its corresponding number.

System Interface Function

Create a function to display the available actions.

def show_menu():
    print('\n' + '=' * 30)
    print('Student Management System')
    print('=' * 30)
    print('1. Enroll New Student')
    print('2. Remove Student Record')
    print('3. Edit Student Information')
    print('4. Look Up Student')
    print('5. Show All Students')
    print('6. Exit Program')
    print('=' * 30)

Main Program Loop

Implement a continuous loop to handle user input, execute the chosen function, and manage errors.

# Global list to store student records.
student_roster = []

while True:
    show_menu()
    user_choice = input('Enter your choice (1-6): ')

    if user_choice == '1':
        enroll_student()
    elif user_choice == '2':
        remove_student()
    elif user_choice == '3':
        update_student()
    elif user_choice == '4':
        find_student()
    elif user_choice == '5':
        list_all_students()
    elif user_choice == '6':
        confirm = input('Confirm exit? (yes/no): ').lower()
        if confirm == 'yes':
            break
    else:
        print('Invalid input. Please select a number between 1 and 6.')

Core Function Implementations

1. Enroll a New Student

Checks for duplicate names before adding a new entry.

def enroll_student():
    """Registers a new student in the system."""
    student_id = input('Enter Student ID: ')
    student_name = input('Enter Full Name: ')
    student_phone = input('Enter Phone Number: ')
    
    global student_roster
    for record in student_roster:
        if student_name == record['name']:
            print('Error: A student with this name is already registered.')
            return
    
    new_record = {'id': student_id, 'name': student_name, 'phone': student_phone}
    student_roster.append(new_record)
    print(f'Successfully enrolled {student_name}.')

2. Remove a Student Record

Searches for a student by name and deletes their record.

def remove_student():
    """Deletes a student's entry from the roster."""
    target_name = input('Enter the name of the student to remove: ')
    global student_roster
    for entry in student_roster:
        if target_name == entry['name']:
            student_roster.remove(entry)
            print(f'Record for {target_name} has been deleted.')
            return
    print('Error: Student not found in the records.')

3. Edit Student Information

Allows updating the phone number for an existing student.

def update_student():
    """Modifies an existing student's contact information."""
    target_name = input('Enter the name of the student to update: ')
    global student_roster
    for entry in student_roster:
        if target_name == entry['name']:
            new_number = input('Enter the new phone number: ')
            entry['phone'] = new_number
            print(f'Contact info for {target_name} has been updated.')
            return
    print('Error: Student not found in the records.')

4. Search for a Student

Fetches and displays details for a specific student.

def find_student():
    """Searches for and prints a student's details."""
    target_name = input('Enter the name to search for: ')
    global student_roster
    for entry in student_roster:
        if target_name == entry['name']:
            print('\n--- Student Details ---')
            print(f"ID: {entry['id']}")
            print(f"Name: {entry['name']}")
            print(f"Phone: {entry['phone']}")
            return
    print('Error: Student not found in the records.')

5. Display All Students

Prints a formatted table of all student records.

def list_all_students():
    """Prints a complete list of all enrolled students."""
    if not student_roster:
        print('The student roster is currently empty.')
        return
    print('\n--- Complete Student Roster ---')
    print('ID\t\tName\t\tPhone')
    print('-' * 35)
    for entry in student_roster:
        print(f"{entry['id']}\t{entry['name']}\t{entry['phone']}")