python操作mysql

标签：python   mysql   

首先需要安装zlib、zlib-devl、python和python-devel。

yum install zlib zlib-devel

安装使用包

wget http://pypi.python.org/packages/source/s/setuptools/setuptools-0.6c11.tar.gz

获得连接连接mysql的包

wget http://downloads.sourceforge.net/project/mysql-python/mysql-python/1.2.2/MySQL-python-1.2.2.tar.gz

可以选择高版本1.2.3就不会遇到错误1和错误2

wget http://downloads.sourceforge.net/project/mysql-python/mysql-python/1.2.3/MySQL-python-1.2.3.tar.gz

具体操作命令：

# tar zxvf setuptools-0.6c11.tar.gz

# cd setuptools-0.6c11

# python setup.py build

# python setup.py install

# tar zxvf MySQL-python-1.2.2.tar.gz

# cd MySQL-python-1.2.2

# python setup.py build

# python setup.py install

测试脚本

#!/usr/bin/env python

#-*- coding: utf-8 -*-

import os,sys

import MySQLdb

try:

db = MySQLdb.connect(host = ‘localhost‘, user=‘root‘ passwd = ‘root‘, db = ‘mysql‘)

except MySQLdb.ERROR,e:

print "Error %d:%s"%(e.args[0],e.args[1])

exit(1)

cursor = db.cursor()

cursor.execute( ‘select * from user‘)

result_set=cursor.fetchall()

print result_set

cursor.close()

db.close()

错误1.

>>> import MySQLdb

Traceback (most recent call last):

File "", line 1, in

File "build/bdist.linux-i686/egg/MySQLdb/__init__.py", line 19, in

File "build/bdist.linux-i686/egg/_mysql.py", line 7, in

File "build/bdist.linux-i686/egg/_mysql.py", line 6, in __bootstrap__

ImportError: libmysqlclient_r.so.16: cannot open shared object file: No such file or directory

解决方法

首先查找模块

# find / -name libmysqlclient_r.so.16

/usr/local/src/mysql-5.1.44-linux-i686-glibc23/lib/libmysqlclient_r.so.16

/usr/local/mysql/lib/libmysqlclient_r.so.16

将模块路径加入动态链接库设置为共享

vim /etc/ld.so.conf

加入：libmysqlclient_r.so.16所在目录

ldconfig -v

错误2.

>>> import MySQLdb

/usr/local/lib/python2.6/site-packages/MySQL_python-1.2.2-py2.6-linux-i686.egg/MySQLdb/__init__.py:34: DeprecationWarning: the sets module is deprecated

解决方法

进入./MySQL-python-1.2.2/MySQLdb目录中

1) 在文件 "__init__" 中将:

from sets import ImmutableSet

class DBAPISet(ImmutableSet):

替换为

class DBAPISet(frozenset)

3) 在文件 "converters.py", 把 "Set" 改为 "set"

将return set([ i for i in s.split(‘,‘) if i ])中"Set" 改为 "set"

将set: Set2Str,中"Set" 改为 "set"

2) 在文件 "converters.py"中移除:

from sets import BaseSet, Set

修改完毕后在做编译和安装。

错误3.

_mysql.c:36:23: 错误：my_config.h：没有那个文件或目录

解决方法

设置include 头文件路径即可，如下

export C_INCLUDE_PATH=/usr/local/mysql/include/

错误4.

>>> cur.execute(‘select * from user‘)

Segmentation fault

解决方法

将语句写为“select user,host from user”可以正常查出。

在64位的服务器上安装发现此问题。不知道为什么会有段错误。是否所有64位服务

器均有此问题，我没有测试

本文出自 “7727197” 博客，请务必保留此出处http://7737197.blog.51cto.com/7727197/1663093

python操作mysql

标签：python   mysql   

原文地址：http://7737197.blog.51cto.com/7727197/1663093