清远市住房与城乡建设局的网站查,网站加背景音乐,领卷网站如何做代理,百度指数数据下载已知有三个数据库mysql,mongodb和redis#xff0c;已经分别存储了不同的学生信息#xff0c;数据全部采用字符串类型#xff0c;只有id和name两个字段(在mongo和redis中键为id,值为name)#xff0c;现需编写代码实现需求#xff1a;根据指定id获取对应的name和存储该条信息…已知有三个数据库mysql,mongodb和redis已经分别存储了不同的学生信息数据全部采用字符串类型只有id和name两个字段(在mongo和redis中键为id,值为name)现需编写代码实现需求根据指定id获取对应的name和存储该条信息的数据库名称。 答案结果如下 from pymysql import * from pymongo import * from redis import * class MySQL(object): def__init__(self): self.con connect(hostlocalhost, port3306, databasestu_info,userroot, passwordmysql,charsetutf8) self.cur self.con.cursor() self.flag [mysql, None] defclose(self): self.cur.close() self.con.close() defcheck(self, sid): try: cur self.cur param [sid] sel_sql select name from student where id %s cur.execute(sel_sql, param) res cur.fetchone() ifres: self.flag[1] res[0] exceptException: pass finally: self.close() return self.flag class Mongo(object): def__init__(self): self.client MongoClient(hostlocalhost, port27017) self.db self.client.stu_info self.col self.db.student self.flag [mongo, None] defcheck(self, sid): try: res self.col.find_one({id: sid}) ifres: self.flag[1] res[name] exceptException: pass finally: return self.flag class Redis(object): def__init__(self): self.client StrictRedis() self.flag [redis, None] defcheck(self, sid): try: res self.client.get(sid) ifres: self.flag[1] res.decode() exceptException: pass finally: return self.flag class Check(object): def__init__(self): self.msg [不在库中, 未找到该学生] defcheck(self, sid): redis Redis() self.msg redis.check(sid) ifself.msg[1]: return self.msg else: mongo Mongo() self.msg mongo.check(sid) ifself.msg[1]: return self.msg else: mysql MySQL() self.msg mysql.check(sid) if self.msg[1]: return self.msg else: self.msg [不在库中, 未找到该学生] return self.msg def main(): stu_id input(请输入要查询的id号) check_id Check() id_msg check_id.check(stu_id) print(id_msg) if __name__ __main__: main()