Python configuration MySQL tutorial (Must SEE)

Source: Internet
Author: User
Tags localhost mysql mysql tutorial python mysql
Here's a small piece to bring you a Python configuration MySQL tutorial (recommended). Small series feel very good, now share to everyone, also for everyone to make a reference. Let's take a look at it with a little knitting.

Linux system comes with Python, and according to the system comes with resources to configure the Python MySQL, installation needs to be configured with the correct Yum source;

In the case of Python not configuring MySQL, the direct import MySQLdb prompt is as follows

>>> Import MySQLdb Traceback (most recent): File "<stdin>", line 1, in <module> importerror : No module named MySQLdb

The Linux system does not have a mysql-python RPM installation package, this resource needs to be downloaded from the Internet:


Current mainstream use Python2.6 or Python2.7 version, download as mysql-python-1.2.3c1.tar.gz

Upload to a Linux machine and put in a non-Chinese directory after download

tar-xf mysql-python-1.2.3c1.tar.gz , unzip the directory as follows

[root@localhost home]# CD mysql-python-1.2.3c1/[root@localhost mysql-python-1.2.3c1]# ll total dosage 240drwxr-xr-x. 5 root root 89 October 12:27 build-rw-r--r--. 1 tianf enosoft 59580 March changelogdrwxr-xr-x. 2 root root 57 October 12:27 distdrwxr-xr-x. 2 tianf enosoft 58 March doc-rw-r--r--. 1 tianf enosoft 9716 February 6 1 tianf enosoft 17989 February gpl-rw-r--r--. 1 tianf enosoft 2935 March 4 history-rw-r--r--. 1 tianf enosoft 605 February manifest-rw-r--r--. 1 tianf enosoft 272 March 9 1 tianf enosoft 2098 March metadata.cfg-rw-r--r--. 1 tianf enosoft 75431 March _mysql.cdrwxr-xr-x. 3 tianf enosoft 211 October 12:28 mysqldb-rw-r--r--. 1 tianf enosoft 2306 April 5 2006 1 root root 3791 October 12:28 _mysql_exceptions.pycdrwxr-xr-x. 2 tianf enosoft 90 March mysql_python.egg-info-rw-r--r--. 1 tianf enosoft 1755 March pkg-info-rw-r--r--. 1 tianf enosoft 3203 April 5 2006 Pymemcompat.h-rw-r--r--. 1 tianf enosoft 6696 October readme-rw-r--r--. 1 tianf enosoft 380 March setup.cfg-rw-r--r--. 1 tianf enosoft 951 March 8 1 root root 1520 October 12:27 setup_common.pyc-rw-r--r--. 1 tianf enosoft 2947 March 8 1 root root 2977 October 12:27 setup_posix.pyc-rw-r--r--. 1 tianf enosoft 495 October 1 tianf enosoft 1547 March 4 1 tianf enosoft 592 October-Site.cfgdrwxr-xr-x. 2 tianf enosoft 149 March tests

You also need to install some dependencies before you configure Python-mysql, otherwise there will be a variety of errors missing

Name Source Installation method
Python-devel System comes with

Yum Whatprovides python*

Install a query to a package that matches the keyword name individually
Setuptools System comes with Http:// Download, select the corresponding Setuptools version according to the Python version or use the package yum install Python-setuptools
Mysql-python Network download

You can use the Yum whatprovides mysql-devel command to see if it is installed (the package name is Mysql-dev for older Linux systems, and if the mysql-devel hint is not found, use dev overrides):

If the command error indicates that the Yum source configuration is incorrect, or the installation disc does not match the system, please refer to the Linux Yum Source Configuration tutorial

[Root@localhost mysql-python]# <strong>yum whatprovides mysql-devel</strong>loaded Plugins:product-id, Refresh-packagekit, security, subscription-managerthis system is not registered to Red Hat subscription Management.  You can use Subscription-manager to Register.base        | 3.9 kB  00:00 ... mysql-devel-5.1.66-2.el6_3.x86_64:files for Development of MySQL Applicationsrepo  : basematched from:mysql-devel-5.1.66-2.el6_3.i686:files for development of MySQL Applicationsrepo  : basematched from:mysql-devel-5.1.66-2.el6_3.x86_64:files for development of MySQL Applica Tionsrepo  : installedmatched from:other  : Provides-match:mysql-devel mysql-devel-5.1.66-2.el6_3.i686:files For development of MySQL Applicationsrepo  : installedmatched from:other  : Provides-match:mysql-devel

As shown above, the repo value of installed indicates that the package is installed, that the main observation of the MYSQL-DEVEL keyword is installed, and that if it is not installed, enter the Yum install mysql-devel command installation

Install Mysql-devel, Python-devel, python-setuptools in turn, the installation process will continue without error;

After the installation of the above dependencies, go back to the Mysql-python extracted mysql-python-1.2.3c1/directory;

>> python Build

>> python Install

The above two commands are executed correctly, which indicates that the Python configuration mysqldb successfully, and again verify the import mysqldb error

[Root@localhost mysql-python]#[root@localhost mysql-python]# Pythonpython 2.7.5 (default, 4, 00:39:18) [GCC 4.8.5 20150623 (Red Hat 4.8.5-16)] on Linux2type ' help ', ' copyright ', ' credits ' or ' license ' for more information.>> > Import mysqldb>>>

As indicated above, configuration MySQLdb succeeded

Common error: Python build hint could not find mysql_config

This problem occurs because the Mysql_config configured in the Site.cfg file in the mysql-python-1.2.3c1/directory is used when building mysqldb;

[Root@localhost mysql-python-1.2.3c1]# lsbuild doc history metadata.cfg PKG-INFO setup.cfg Set setup_windows.pychangelog MANIFEST _mysql.c _mysql_exceptions.pyc pymemcompat.h setup_ setup_posix.pyc site.cfgdist GPL mysqldb mysql_python.egg-info README setup_common.pyc setup.p Y tests[root@localhost mysql-python-1.2.3c1]# more site.cfg[options]# embedded:link against the embedded server library  # Threadsafe:use The Threadsafe client# static:link against a static library (probably required for embedded) embedded = Falsethreadsafe = Truestatic = False # The path to mysql_config.# only with the If Mysql_config is isn't on your path, or y The OU has some weird# setup that requires it. #mysql_config =/usr/local/bin/mysql_config # The Windows registry key for MYSQ L.# this had to is set for Windows builds to work.# only the change this if you have a different Version.registry_key = Softwa Re\mysql Ab\mysql Server 5.0[root@localhost mysql-python-1.2.3c1]# 

If the installation location of MySQL does not match the location configured in Site.cfg, you need to modify the #mysql_config configuration of the Site.cfg file, cancel the previous comment, and configure it as the correct address. For example

mysql_config =/usr/bin/mysql_config # (unspecified case, mysql_config location by default in the/usr/bin directory, different system differences, specifically by searching for files to get the actual location)

Verifying the Python-mysql feature

Configure the MySQL database as needed, and modify the user name and password;

View python-mysql basic syntax, link MySQL database MySQL library, get user table information, code as follows;

#!/usr/bin/python#encoding=utf8 Import mysqldbconn=mysqldb.connect ("", "root", "123456", "MySQL") cursor= Conn.cursor () cursor.execute ("SELECT * from User") Getdata=cursor.fetchone () print "The User table content is:", Getdataconn.close ()

The results of the implementation are as follows:

[root@localhost python]# python mysql-conn.pythe user table content is: ('% ', ' root ', ' y ', ' y ', ' y ', ' y ', ' y ', ' y ', ' y ', ' Y ', ' y ', ' y ', ' y ', ' y ', ' Y ', ' y ', ' y ', ' y ', ' y ', ' y ', ' y ', ' y ', ' y ', ' y ', ' y ', ' y ', ' y ', ' y ', ' y ', ' y ', ' y ', ' ', 0L, 0L, 0L, 0L, <br> ' Mysql_native_password ', ' 123456 ', ' Y ', Datetime.datetime (9, 2, A, a, a-N, +-), None [Root@localhost python]#

At this point, Python configures MySQL authentication to pass!

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