每当我退出程序并再次尝试添加时，我的代码总是重新编写标题行。我该如何解决这个问题

Question

每当我退出程序并再次尝试添加时，我的代码总是重新编写标题行。我该如何解决这个问题？

import csv


def add_student():
    print("*****************************************")
    print("          ADD STUDENT INFORMATION            ")
    print("*****************************************")
    
    with open('student.csv', 'a', newline='') as file:
        student_writer = csv.writer(file)
        
        id_number = input("Enter Student ID Number: ")
        name = input("Enter Student  Name: ")
        year = input("Enter Student  Year: ")
        course = input("Enter Student  Course: ")
        department = input("Enter Student  Department: ")
        
        student_writer.writerow([id_number, name, year, course, department])
        
        print("Student Information added successfully")
        input("Press Enter to Continue...")
    

def view_all_students():
   
    with open('student.csv', 'r') as file:
        student_data = csv.reader(file)
        for row in student_data:
            print(row)
            
    input("Press Enter to Continue...")

# Write the header row to the file
with open('student.csv', 'a', newline='') as file:
    student_writer = csv.writer(file)
    student_writer.writerow(["ID_Number", "Name", "Year", "Course", "Department"])

while True:
    display_menu()

    choice = input("Enter your choice: ")
    if choice == '1':
        add_student()
    elif choice == '2':
        view_all_students()
    else:
        print("Invalid choice. Please try again.") 

如何修复只显示一次标题行的代码？