python 基础 9.3 mysql 数据操作

#/usr/bin/python

#coding=utf-8

#@Time   :2017/11/21 0:20

#@Auther :liuzhenchuan

#@File   :mysql 数据操作.py

import MySQLdb

 

 

def connect_mysql():

    db_config={

        'host':'192.168.16.70',

        'port':3306,

        'user':'root',

        'db':'python',

        'passwd':'123123',

        'charset':'utf8'

    }

    try:

        cnx=MySQLdb.connect (**db_config)

    except Exception as e:

        raise e

    return  cnx

connect_mysql()

# print connect_mysql()

if __name__ == "__main__":

    sql = 'create table test(id int not null); insert into test(id) values (100);'

    cnx = connect_mysql()

    #查看链接数据库cnx 的方法

    #cursor 游标  execute 执行

    # print dir(cnx)

    cus = cnx.cursor()

    try:

        #执行游标

        cus.execute(sql)

        #关闭游标

        cus.close()

        #mysql 提交

        cnx.commit()

    except Exception as e:

        raise e

        #有异常进行回滚

        cnx.rollback()

    finally:

        #没有异常关闭连接

        cnx.close()

 

 

linux系统登录mysql进行查看，创建了test表，插入了语句

mysql> show databases;

+--------------------+

| Database           |

+--------------------+

| information_schema |

| cactidb            |

| mysql              |

| performance_schema |

| python             |

| test               |

+--------------------+

6 rows in set (0.00 sec)

 

mysql> use python;

Database changed

mysql> show tables;

+------------------+

| Tables_in_python |

+------------------+

| employees        |

| test             |

+------------------+

2 rows in set (0.00 sec)

mysql> select *from test;

+-----+

| id  |

+-----+

| 100 |

+-----+

1 row in set (0.00 sec)