Python实现备份MySQL数据库的方法示例

#!/usr/bin/env python# -*- coding:utf-8 -*-#导入模块import MySQLdbimport timeimport datetimeimport os""" Purpose: 备份数据库 Created: 2015/5/12 Modified:2015/5/12 @author: guoyJoe"""dbUser='root'dbPasswd='root'dbHost='192.168.1.6'dbCharset = 'utf8'backupDir = '/u02/backup/mysql'backupDate = time.strftime("%Y%m%d")#查出MySQL中所有的数据库名称sqlStr1 = "show databases like 'db%'"try:  connDB= MySQLdb.connect("192.168.1.6","root","root","test" )  connDB.select_db('test')  curSql1=connDB.cursor()  curSql1.execute(sqlStr1)  allDatabase = curSql1.fetchall()  print 'The database backup to start! %s'  %time.strftime('%Y-%m-%d %H:%M:%S')  for db in allDatabase:    dbName = db[0]    fileName = '%s/%s_%s.sql' %(backupDir,backupDate,dbName)    print fileName    if os.path.exists(fileName):        os.remove(fileName)    os.system("mysqldump -h%s -u%s -p%s %s --default_character-set=%s > %s/%s_%s.sql" %(dbHost,dbUser,dbPasswd,dbName,dbCharset,backupDir,backupDate,dbName))  print 'The database backup success! %s' %time.strftime('%Y-%m-%d %H:%M:%S')#异常except MySQLdb.Error,err_msg:  print "MySQL error msg:",err_msg