connector for python

1.下载并安装connector/python

A.下载mysql-connector-python-2.1.6-py2.7-winx64.msi,下载之后,根据提示安装即可

下载地址:https://dev.mysql.com/downloads/connector/python/

 2.使用命令行往mysql中添加数据

A.进入数据库命令行操作界面,使用mysql -u USERNAME -p PASSWORD

 

B.数据库常用操作

show databases;        # 显示所有数据库

create database t1;     # 创建数据库t1

use database t1;       #指定当前操作的数据库为t1

drop database t1;      #删除数据库t1

注:操作数据库,可参考菜鸟教程http://www.runoob.com/mysql/mysql-tutorial.html

C.表中所有数据如下

 

3.使用python中的mysql.connector模块操作mysql

python代码

 

import mysql.connector                

 

# mysql1.py

config = {

    'host': '127.0.0.1',

    'user': 'root',

    'password': 'root',

    'port': 3306,

    'database': 'test',

    'charset': 'utf8'

}

try:

    cnn = mysql.connector.connect(**config)

except mysql.connector.Error as e:

    print('connect fails!{}'.format(e))

cursor = cnn.cursor()

try:

    sql_query = 'select name,age from stu ;'

    cursor.execute(sql_query)

    for name, age in cursor:

        print (name, age)

except mysql.connector.Error as e:

    print('query error!{}'.format(e))

finally:

    cursor.close()

    cnn.close()

 

操作结果

(u'xiaoming', 10)

(u'rose', 18)

(u'jack', 19)

(u'fang', 20)

(u'Liang', 40)

(u'Age', None)

 

更加规范的操作,代码如下

 

def select2(sql_cmd, param):

    """

    :param sql_cmd sql 命令

    :param param 参数

    """

    try:

        conn = mysql.connector.connect(**config)

    except mysql.connector.Error as e:

        print('connect fails!{}'.format(e))

 

    cursor = conn.cursor()

    try:

        cursor.execute(sql_cmd, param)

    except mysql.connector.Error as e:

        print('connect fails!{}'.format(e))

    finally:

        cursor.close()

        conn.close()

 

if __name__ ==  '__main__':

    sql_cmd = "insert into stu (name, age, sex) value (%s, %s, %s)"

    param = ('yangguo', 28, 'male')

    select2(sql_cmd=sql_cmd, param=param)    # 将命令和参数分隔开,操作起来更加安全

 

posted on 2019-04-07 19:44  辉夜星  阅读(349)  评论(0编辑  收藏  举报