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HomeBackend DevelopmentPython TutorialPython MySQLdb模块连接操作mysql数据库实例

mysql是一个优秀的开源数据库,它现在的应用非常的广泛,因此很有必要简单的介绍一下用python操作mysql数据库的方法。python操作数据库需要安装一个第三方的模块,在http://mysql-python.sourceforge.net/有下载和文档。

由于python的数据库模块有专门的数据库模块的规范,所以,其实不管使用哪种数据库的方法都大同小异的,这里就给出一段示范的代码:

#-*- encoding: gb2312 -*-
import os, sys, string
import MySQLdb

# 连接数据库 
try:
  conn = MySQLdb.connect(host='localhost',user='root',passwd='xxxx',db='test1')
except Exception, e:
  print e
  sys.exit()

# 获取cursor对象来进行操作

cursor = conn.cursor()
# 创建表
sql = "create table if not exists test1(name varchar(128) primary key, age int(4))"
cursor.execute(sql)
# 插入数据
sql = "insert into test1(name, age) values ('%s', %d)" % ("zhaowei", 23)
try:
  cursor.execute(sql)
except Exception, e:
  print e

sql = "insert into test1(name, age) values ('%s', %d)" % ("张三", 21)
try:
  cursor.execute(sql)
except Exception, e:
  print e
# 插入多条

sql = "insert into test1(name, age) values (%s, %s)" 
val = (("李四", 24), ("王五", 25), ("洪六", 26))
try:
  cursor.executemany(sql, val)
except Exception, e:
  print e

#查询出数据
sql = "select * from test1"
cursor.execute(sql)
alldata = cursor.fetchall()
# 如果有数据返回,就循环输出, alldata是有个二维的列表
if alldata:
  for rec in alldata:
    print rec[0], rec[1]


cursor.close()

conn.close()

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