Не записываются заголовки в csv файл

Сейчас заголовок записывается только в последний csv файл  noncontr_lv.csv
Как сделать чтобы заголовки записывались во все файлы  ?

мой код :

import ast
import csv

def contract_lv(list_d, write_header):
    with open('contract_lv.csv', 'a+', encoding='utf-8', newline='') as file_lv:
        writer = csv.writer(file_lv, delimiter=";")
        if write_header:
            writer.writerow(['Customer ID'])
        print(final_date['CustomerId'], file=file_lv, sep=';')


def post_lv(final_date, write_header):
    with open('post_lv.csv', 'a+', encoding='utf-8',newline='') as file_post_lv:
        writer = csv.writer(file_post_lv, delimiter=";")
        if write_header:
            writer.writerow(['CardNumber'])
        print(final_date['CardId'], file=file_post_lv, sep=';')


def noncontract_lv(final_date, write_header):
    with open('noncontr_lv.csv', 'a+', encoding='utf-8',newline='') as file_noncontr_lv:
        writer = csv.writer(file_noncontr_lv, delimiter=";")
        if write_header:
            writer.writerow(['Agreement Nr'])
        print(final_date['AgreementID'], file=file_noncontr_lv, sep=';')


with open('2222222.txt', 'r', encoding='utf-8') as file:
    lines = file.readlines()
    write_header = True
    for line in lines:
        final_date = ast.literal_eval(line)
        if final_date["ContractType"] == "Yes": 
            contract_lv(final_date, write_header)
            write_header = False
        elif final_date["ContractType"] == "Yes":
            post_lv(final_date, write_header)
            write_header = False
        elif final_date["ContractType"] == "None":
            noncontract_lv(final_date, write_header)
            write_header = False