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  • windows安装mysqldb

    使用Python访问MySQL,需要一系列安装


    linux下MySQLdb安装见  

    Python MySQLdb在Linux下的快速安装

    http://blog.csdn.net/wklken/article/details/7271019


    -------------------------------------------------------------

    以下是windows环境下的:


    1.      安装数据库mysql

    下载地址:http://www.mysql.com/downloads/

    可以顺带装个图形工具,我用的是MySQL-Front

     

    2.      安装MySQLdb

     

    好了,到了这一步,你有两个选择

    A.     安装已编译好的版本(一分钟)

    B.     从官网下,自己编译安装(介个…..半小时到半天不等,取决于你的系统环境以及RP)

     

    若是系统32位的,有c++编译环境的,自认为RP不错的,可以选择自己编译安装,当然,遇到问题还是难免的,一步步搞还是能搞出来的

    若是系统64位的,啥都木有的,建议下编译版本的,甭折腾

     

    2.1安装已编译版本:

    http://www.codegood.com/downloads

    根据自己系统下载,双击安装,搞定

    然后import MySQLdb,查看是否成功

     

    我的,win7,64位,2.7版本

    MySQL-python-1.2.3.win-amd64-py2.7.exe

     

    2.2自己编译安装

    话说搞现成的和自己编译差距不一一点半点的,特别是64位win7,搞死了

     

    2.2.1安装setuptools

    在安装MySQLdb之前必须安装setuptools,要不然会出现编译错误

    http://pypi.python.org/pypi/setuptools

    http://peak.telecommunity.com/dist/ez_setup.py 使用这个安装(64位系统必须用这个)

     

    2.2.2安装MySQLdb

    下载MySQLdb

    http://sourceforge.net/projects/mysql-python/

     

    解压后,cmd进入对应文件夹

    如果32位系统且有gcc编译环境,直接

    python setup.py build

     

    2.2.3问题汇总

    A. 64位系统,无法读取注册表的问题

    异常信息如下:

    F:devtoolsMySQL-python-1.2.3>pythonsetup.py build

    Traceback (most recent call last):

     File "setup.py", line 15, in <module>

       metadata, options = get_config()

     File "F:devtoolsMySQL-python-1.2.3setup_windows.py", line7, in get_config

       serverKey = _winreg.OpenKey(_winreg.HKEY_LOCAL_MACHINE, options[' registry_ke

    y'] )

    WindowsError: [Error 2] The system cannotfind the file specified

     

    解决方法:

    其实分析代码,发现只是寻找mysql的安装地址而已  修改setup_windows.py如下

    注解两行,加入一行,为第一步mysql的安装位置

     

       #serverKey = _winreg.OpenKey(_winreg.HKEY_LOCAL_MACHINE,options['registry_key'] )

       #mysql_root, dummy = _winreg.QueryValueEx(serverKey,'Location')

       mysql_root = r"F:devtoolsMySQLMySQL Server 5.5"

     

    B.没有gcc编译环境

    unable to find vcvarsall.bat

    解决方法:安装编译环境(一个老外的帖子)

    1)  First ofall download MinGW. Youneed g++compiler and MingW make in setup.

    2)  If youinstalled MinGW for example to “C:MinGW” then add “C:MinGWin”to your PATH in Windows.(安装路径加入环境变量)

    3)  Now startyour Command Prompt and go the directory where you have your setup.py residing.

    4)  Last andmost important step:

    setup.py install build --compiler=mingw32

    或者在setup.cfg中加入:
    [build]
        compiler = mingw32

     

    C.gcc: /Zl: No suchfile or directory错误

    异常信息如下

    F:devtoolsMinGWingcc.exe -mno-cygwin-mdll -O -Wall -Dversion_info=(1,2,3,'

    final',0) -D__version__=1.2.3"-IF:devtoolsMySQLMySQL Server 5.5include" -IC

    :Python27include -IC:Python27PC -c_mysql.c -o build emp.win-amd64-2.7Rele

    ase\_mysql.o /Zl

    gcc: error: /Zl: No such file or directory

    error: command 'gcc' failed with exitstatus 1

     

    参数是vc特有的编译参数,如果使用mingw的话因为是gcc所以不支持。可以在setup_windows.py中去掉
    /Zl  

     

    解决方法:

    修改setup_windows.py  改为空的

    #extra_compile_args = [ '/Zl' ]

        extra_compile_args = [ '' ]

     目前就遇到这几个问题,望补充

     

    3.  增删改查代码示例及结果(just for test)

    [sql] view plain copy
    print?
    
        CREATE TABLE `user` (  
          `Id` int(11) NOT NULL AUTO_INCREMENT,  
          `name` varchar(255) DEFAULT NULL,  
          `age` varchar(255) DEFAULT NULL,  
          PRIMARY KEY (`Id`)  
        ) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=utf8; 
    
    [python] view plain copy
    print?
    
        #-*- coding:utf-8 -*-  
        #dbtest.py  
        #just used for a mysql test  
        ''''' 
        Created on 2012-2-12 
         
        @author: ken 
        '''  
        #mysqldb      
        import time, MySQLdb, sys    
                 
        #connect   
        conn=MySQLdb.connect(host="localhost",user="root",passwd="test_pwd",db="school",charset="utf8")    
        cursor = conn.cursor()      
                 
        #add  
        sql = "insert into user(name,age) values(%s,%s)"     
        param = ("tom",str(20))      
        n = cursor.execute(sql,param)      
        print n      
                 
        #更新      
        sql = "update user set name=%s where Id=9001"     
        param = ("ken")      
        n = cursor.execute(sql,param)      
        print n      
          
        #查询      
        n = cursor.execute("select * from user")      
        for row in cursor.fetchall():      
            for r in row:      
                print r,     
        print ""  
          
          
        #删除      
        sql = "delete from user where name=%s"     
        param =("ted")      
        n = cursor.execute(sql,param)      
        print n      
        cursor.close()      
                 
        #关闭      
        conn.close()  
    

    如果报Python version 2.7 required, which was not found in the registry

    安装setuptools的时候,不能再注册表中识别出来python2.7

    在网上找了方法,仅作笔记,供下次使用

    方法:

    新建一个register.py 文件,把一下代码贴进去,保存(G盘)

    #
    # script to register Python 2.0 or later for use with win32all
    # and other extensions that require Python registry settings
    #
    # written by Joakim Loew for Secret Labs AB / PythonWare
    #
    # source:
    # http://www.pythonware.com/products/works/articles/regpy20.htm
    #
    # modified by Valentine Gogichashvili as described in http://www.mail-archive.com/distutils-sig@python.org/msg10512.html
     
    import sys
     
    from _winreg import *
     
    # tweak as necessary
    version = sys.version[:3]
    installpath = sys.prefix
     
    regpath = "SOFTWARE\Python\Pythoncore\%s\" % (version)
    installkey = "InstallPath"
    pythonkey = "PythonPath"
    pythonpath = "%s;%s\Lib\;%s\DLLs\" % (
        installpath, installpath, installpath
    )
     
    def RegisterPy():
        try:
            reg = OpenKey(HKEY_CURRENT_USER, regpath)
        except EnvironmentError as e:
            try:
                reg = CreateKey(HKEY_CURRENT_USER, regpath)
                SetValue(reg, installkey, REG_SZ, installpath)
                SetValue(reg, pythonkey, REG_SZ, pythonpath)
                CloseKey(reg)
            except:
                print "*** Unable to register!"
                return
            print "--- Python", version, "is now registered!"
            return
        if (QueryValue(reg, installkey) == installpath and
            QueryValue(reg, pythonkey) == pythonpath):
            CloseKey(reg)
            print "=== Python", version, "is already registered!"
            return
        CloseKey(reg)
        print "*** Unable to register!"
        print "*** You probably have another Python installation!"
     
    if __name__ == "__main__":
        RegisterPy()
    

     输入以下命令(register.py 存放在 G盘底下)

    显示“python 2.7 is already registered”

    再安装setuptools的时候,就能自动识别出来python2.7了。

    win7是 64的原因,在安装python(32位)时,如果选择只为当前用户,以上问题是不会出现的,如果选择所有用户,那就用上面的方法解决吧。

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  • 原文地址:https://www.cnblogs.com/hadean/p/5803407.html
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