python 封装一个操作sqlite数据库的类

问题来源：我为什么要封装这个类

• 在写scrapy爬虫的时候，遇到了需要将数据存储到本地sqlite的情况
• 虽然在管道里面可以直接写存储的代码，但是想借此机会，封装一个更加通用的类来供管道调用，这样以后在写一些小爬虫的时候也能直接调用这个类

示例代码，仅供参考哦，水平有限勿喷，感谢点赞

import sqlite3


class Sqlite3Database(object):
    """SQLite 数据库操作类"""

    def __init__(self, db_name):
        """初始化，连接到指定的数据库"""
        self.conn = sqlite3.connect(db_name)
        self.cursor = self.conn.cursor()

    def create_table(self, table_name, columns: str):
        """创建表格"""
        sql = f"CREATE TABLE IF NOT EXISTS {table_name} ({columns})"
        self.cursor.execute(sql)
        self.conn.commit()

    def drop_table(self, table_name):
        """删除表格"""
        sql = f"DROP TABLE IF EXISTS {table_name}"
        self.cursor.execute(sql)
        self.conn.commit()

    def insert_data(self, table_name, data: dict):
        """插入数据"""
        columns = ', '.join(data.keys())
        placeholders = ':' + ', :'.join(data.keys())
        sql = f"INSERT INTO {table_name} ({columns}) VALUES ({placeholders})"
        self.cursor.execute(sql, data)
        self.conn.commit()

    def update_data(self, table_name, data: dict, condition):
        """更新数据"""
        set_clause = ', '.join(f"{key} = :{key}" for key in data.keys())
        sql = f"UPDATE {table_name} SET {set_clause} WHERE {condition}"
        self.cursor.execute(sql, data)
        self.conn.commit()

    def delete_data(self, table_name, condition):
        """删除数据"""
        sql = f"DELETE FROM {table_name} WHERE {condition}"
        self.cursor.execute(sql)
        self.conn.commit()

    def select_data(self, table_name, columns=None, condition=None):
        """查询数据"""
        if columns is None:
            columns = '*'
        if condition is None:
            condition = ''
        else:
            condition = f"WHERE {condition}"
        sql = f"SELECT {columns} FROM {table_name} {condition}"
        self.cursor.execute(sql)
        return self.cursor.fetchall()

    def __del__(self):
        """关闭数据库连接"""
        self.conn.close()