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HomeBackend DevelopmentPython Tutorial学习python之编写简单简单连接数据库并执行查询操作

python 连接数据库操作, 方法如下:

在本机的mysql 数据库中有一个名为yao的库,其中有一个名为user的表,表中的内容如图

下面,则是python连接数据库的方法,及查找出表中的内容,代码如下:

#! /usr/bin/python
# filename  conn.py
import MySQLdb         # 载入连接数据库模块  
try:              # 尝试连接数据库
    conn = MySQLdb.connect("localhost","root","www","yao",charset="utf8")  # 定义连接数据库的信息
except MySQLdb.OperationalError, message:  # 连接失败提示
    print "link error"
 
cursor=conn.cursor()          #定义连接对象
cursor.execute("select * from user")  #使用cursor提供的方法来执行查询语句
data=cursor.fetchall()         #使用fetchall方法返回所有查询结果
print data              #打印查询结果
cursor.close()            #关闭cursor对象
conn.close()             #关闭数据库链接

程序执行结果为

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