python操作数据库 封装类

# -*- coding:utf-8 -*-# Author:Hy# @Time :2018/2/1610:24import pymysql

# 封装类class MysqlHelp(object):    # 构造    def __init__(self, host, user, passwd, db, port=3306):        self.host = host        self.user = user        self.port = port        self.passwd = passwd        self.db = db

# 创建连接    def open_coon(self):        self.coon = pymysql.connect(host=self.host, port=self.port, user=self.user, passwd=self.passwd, db=self.db)        self.cursor = self.coon.cursor()

# 关闭连接    def close(self):        self.cursor.close()        self.coon.cursor()

# 调用语句    def insert_delete_update(self, sql, params):        try:            self.open_coon()

self.cursor.execute(sql, params=[])            print("OK")            self.coon.commit()

self.close()

except Exception as erorr:            print(erorr)

# 查询 接收全部的返回结果行

def select_fetchall(self, sql, params=[]):        try:            self.open_coon()

self.cursor.execute(sql, params)

results = self.cursor.fetchall()

self.coon.commit()

self.close()            return results

except Exception as erorr:            print(erorr)

原文地址：https://www.cnblogs.com/hyn934/p/8874245.html