python学习笔记十一：操作mysql

一、安装MySQL-python

# yum install -y MySQL-python

二、打开数据库连接

#!/usr/bin/python
import MySQLdb

conn = MySQLdb.connect(user='root',passwd='admin',host='127.0.0.1')
conn.select_db('test')
cur = conn.cursor()

三、操作数据库

 

def insertdb():
    sql = 'insert into test(name,`sort`) values ("%s","%s")'
    exsql = sql % ('hello','python')
    cur.execute(exsql)
    conn.commit()
    return 'insert success'

def selectdb():
    sql = 'select `name` from test where `sort` = "%s"'
    exsql = sql % ('python')
    count = cur.execute(exsql)
    for row in cur:
        print row

    print 'cursor move to top:'
    cur.scroll(0,'absolute')

    row = cur.fetchone()
    while row is not None:
        print row
        row = cur.fetchone()

    print 'cursor move to top:'
    cur.scroll(0,'absolute')

    many = cur.fetchmany(count)
    print many

def deletedb():
    sql = 'delete from test where `sort` = "%s"'
    exsql = sql % ('python')
    cur.execute(exsql)
    conn.commit()
    return 'delete success'


print insertdb()
print insertdb()
selectdb()
print deletedb()

 

四、关闭连接

cur.close()
conn.close()

注意顺序。