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