Connector for Python

连接mysql, 需要mysql connector, conntector是一种驱动程序,python连接mysql的驱动程序,mysql官方给出的名称为connector/python,

可参考mysql官网:https://dev.mysql.com/downloads/connector/

环境

操作系统:Windows 10

python版本:2.7

mysql版本:5.5.53 MySQL Community Server (GPL)

IDE工具:pycharm 2016.3.2

接下来列举python操作mysql的步骤:

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

Connector for Python

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

Connector for Python

3.使用python中的mysql.connector模块操作mysql

python代码

Connector for Python
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()
Connector for Python

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

Connector for Python
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
Connector for Python
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