利用python生成一个导出数据库的bat脚本文件的方法

实例如下：

# 环境: python3.x

def getExportDbSql(db, index):  

# 获取导出一个数据库实例的sql语句
    sql = 'mysqldump -u%s -p%s -h%s -P%d --default-character-set=utf8 --databases mu_ins_s%s > %s.s%d.mu_ins_%d.sql' %(db['user'], db['pwd'], db['host'], db['port'], index, db['server'], index, index)
    return sql

def createDbBackupFile(fname, dbList):  

# 生成数据库导出的语句保存到文件
    if not fname or not dbList:
        return False

    f = open(fname, 'w')
    if f:
        f.write('echo @offnn')
        for db in dbList:
            for index in db['indexList']:
                f.write('REM %s.s%dn' %(db['server'], index))
                f.write('%snn' %getExportDbSql(db, index))
            f.write('n')

        f.close()
        return True

    return False

def initDb(user, pwd, host, port, server_name, indexList):  

# 生成db字典对象并返回
    db = {}
    db['user'] = user
    db['pwd'] = pwd
    db['host'] = host
    db['port'] = port
    db['server'] = server_name
    db['indexList'] = indexList

    return db

def displayDb(db):
    print('user =', db['user'])
    print('pwd =', db['pwd'])
    print('host =', db['host'])
    print('port =', db['port'])
    print('server =', db['server'])
    print('indexList =', db['indexList'])
    print('n')

def displayList(list):
    for item in list:
        displayDb(item)

if __name__ == '__main__':
    db1 = initDb('root', '123456', '127.0.0.1', 3306, 'th1', [10000, 1, 3])
    db2 = initDb('root', '123456', '127.0.0.1', 3306, 'th2', [10000, 1])

    dbList = []
    dbList.append(db1)
    dbList.append(db2)

    #displayList(dbList)

    createDbBackupFile('export00.bat', dbList)

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