python备份mysql数据库

原本可以用shell完成的功能，现在学习python，就照抄照改。完成数据库备份。

#!/usr/bin/python #-*-coding:utf-8-*- #MYSQL BACK import string,time,os,datetime import sys,logging,stat import subprocess #os.environ.get(‘PERONA_A’) os.environ["PATH"]="/usr/local/mysql/bin/:" # os.putenv("PATH","/usr/local/mysql/bin/:") #os.putenv(“PATH”,”/usr/bin/”) # os.environ["PATH"] year= time.strftime('%Y',time.localtime(time.time())) moth= time.strftime('%m',time.localtime(time.time())) data_path ="/mysqlbak/"+year+"/"+moth+"/" sql_user ="root" sql_pwd ="sh123456" sql_ip ="127.0.0.1" all="--all-databases --events" def loger(datapath,logfile="mysqlbak.log"):     """创建日志文件"""     if not os.path.exists(datapath):         os.makedirs(datapath)     log_filename = datapath+logfile     log_format = '%(filename)s [%(asctime)s] [%(levelname)s] %(message)s'          logging.basicConfig(filename=log_filename,format=log_format,datefmt='%Y-%m-%d %H:%M:%S %p',level=logging.DEBUG) #---------------------------------------------------------------------- def ClearDir(dir,age):     """删除几天前的文件，age为时间长，如（86400为一天）"""     for file in os.listdir(dir):         now = time.time()         filepath = os.path.join(dir,file)         files = os.stat(filepath).st_mtime         if files < now - age:             if os.path.isfile(filepath):                 os.remove(filepath)                 logging.info("%s remove success!!!" % filepath)     def mysql_backup(filename):     backup_name = data_path+filename+"%s.sql" %(time.strftime("%Y%m%d%H%M"))       sql_comm ='mysqldump %s -h%s -u%s -p%s > %s'%(all,sql_ip,sql_user,sql_pwd,backup_name)     #print sql_comm     if os.system(sql_comm) ==0:         return logging.info("%s back success!!!!" %backup_name)         #print "scuess ！"     else:         return logging.error("%s back Failed!!!" %backup_name)         #print "Failer !!!!" #----------------------------------------------------------------------     if __name__ =="__main__":     loger(data_path)     SQL_backup =mysql_backup("app_")     ClearDir(data_path,(7 * 86400))