mysql-connector-python 学习笔记

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

########## prepare ##########
# install mysql-connector-python:
# pip install mysql-connector-python

import mysql.connector

class DBMysql():
    """mysql数据库相关操作"""
    def __init__(self,ip="127.0.0.1",port = "3306",user="root", password="123456", database="test"):
        self.ip = ip
        self.port = port
        self.user = user
        self.pwd = password
        self.db = database

    def createOperate(self,createSql):
        """创建数据库table"""
        conn = mysql.connector.connect(user=self.user, password=self.pwd, database=self.db)
        cursor = conn.cursor()
        try:
            # 创建user表:
            cursor.execute(createSql)
            # 提交事务:
            conn.commit()
        except:
            print("创建表异常")
            pass
        finally:
            # 关闭Cursor和Connection:
            cursor.close()
            conn.close()

    def insertOperate(self,insertSql):
        """插入数据库操作"""
        conn = mysql.connector.connect(user=self.user, password=self.pwd, database=self.db)
        cursor = conn.cursor()
        try:
            # 插入一行记录，注意MySQL的占位符是%s:
            cursor.execute(insertSql)
            print('rowcount =', cursor.rowcount)
            # 提交事务:
            conn.commit()
        except:
            print("数据插入异常")
            pass
        finally:
            # 关闭Cursor和Connection:
            cursor.close()
            conn.close()

    def queryOperate(self,querySql):
        """查询数据库操作"""
        conn = mysql.connector.connect(user=self.user, password=self.pwd, database=self.db)
        cursor = conn.cursor()
        try:
            cursor.execute(querySql)
            values = cursor.fetchall()
            print(values)
        except:
            print("查询数据异常")
            pass
        finally:
            # 关闭Cursor和Connection:
            cursor.close()
            conn.close()


if __name__ == '__main__':
    dbm = DBMysql(ip="127.0.0.1",port = "3306",user="root", password="******", database="test")
    createSql = 'create table user (id varchar(20) primary key, name varchar(20));'
    insertSql = 'insert into user (id, name) values ("1", "Michael");'
    querySql = 'select * from user;'
    # querySql = 'select * from user where id = "1";'

    # dbm.createOperate(createSql)
    # dbm.insertOperate(insertSql)
    dbm.queryOperate(querySql)
    # names = ["zhangSan","liSi","wangWu","zhaoLiu"]
    # i = 1
    # for name in names:
    #     i = i + 1
    #     insertSql = ''
    #     insertSql = 'insert into user (id, name) values("'+str(i)+'","'+name+'")'
    #     dbm.insertOperate(insertSql)