Python基础学习九 数据库备份

class BakDb(object):
    def __init__(self,ip,username,passwd,port=3306,path=r'C:UsersBJQTDesktopdata_back'):
        self.ip = ip
        self.username = username
        self.passwd = passwd
        self.port = port
        self.path = path
        self.path_exist()
        self.bak_db()

    def path_exist(self):
        if not os.path.isdir(self.path): #判断路径是否存在，不存在就创建
            os.mkdir(self.path)

    def bak_db(self):
        # mysqldump - u%s - p%s -P%s -h%s - A > XXX.sql
        filename = str(datetime.date.today())+'.sql'
        abs_file = os.path.join(self.path,filename) #变成绝对路径
        # 路径不要有空格，否则SQL文件为空  C:mysqldump.exe
        command =r'''
        C:mysqldump.exe -u{username} -p{passwd} -P{port} -h{ip} -A > {filename}

        '''.format(username = self.username,
                    passwd = self.passwd,
                    port= self.port,
                    filename = abs_file,
                    ip = self.ip)
        os.system(command)
        print('done!数据库备份完成！')

db1 = BakDb('172.19.23.191','root','123456')
db1.bak_db()