python操作mysql數據庫封裝類

import pymysql

#數據庫查詢
class QuerySqlData(object):

    def __init__(self):
        self.conn = pymysql.connect(
            host='ip',
            port=3306,
            user='#',
            passwd='#',
            db='#',
            charset='utf8')   # 創建連接

    def find_table(self,sql,bid):
        cursor = self.conn.cursor()   # 創建連接
        try:
            cursor.execute(sql, bid)  # 執行SQL
            results = cursor.fetchall();  # 返回查詢數據
            self.conn.commit()  # 提交，不然無法保存新建或者修改的數據
        except:
            print("數據連接錯誤-find_table")
        finally:
            cursor.close()  # 關閉游標
            self.conn.close()  # 關閉連接
        return resultsif __name__ == '__main__':
    querySqlData = QuerySqlData()
    value = {"userid":"aa"}
    a = querySqlData.find_table('SELECT * from t_user u where u.userid=%(userid)s',value)
    print(a)