使用python创建不重复标题的表

import sqlite3
import random
import string

conn = sqlite3.connect('database.db')

conn.execute('''CREATE TABLE IF NOT EXISTS titles
                (id INTEGER PRIMARY KEY AUTOINCREMENT,
                title TEXT NOT NULL);''')

def generate_title(length):
    letters = string.ascii_letters
    title = ''.join(random.choice(letters) for i in range(length))
    return title

def insert_title():
    title = generate_title(10)  # 生成长度为10的随机标题
    cursor = conn.execute("SELECT * FROM titles WHERE title=?", (title,))
    if len(cursor.fetchall()) == 0:  # 检查标题是否已存在于表中
        conn.execute("INSERT INTO titles (title) VALUES (?)", (title,))
        conn.commit()
        print("标题插入成功！")
    else:
        insert_title()  # 如果标题已存在，则递归调用函数重新生成并插入标题

insert_title()