flask基础 MongoDB

pymongo # 建立连接,mongo的默认端口是27017 mongo_client = pymongo.MongoClient(host=‘127.0.0.1‘,port=27017) # 连接s12day117数据库 mongo_db = mongo_client[‘s12day117‘] # 查询 res = mongo_db.user.find() print(res) for i in res: print(i) res = mongo_db.user.find_one({‘name‘:‘yang‘}) print(res) #插入 res = mongo_db.chat.inset_one({}) print(res,res.inserted_id) res = mongo_db.chat.inset_many([{},{},{}]) print(res,res.inserted_ids) # 改 res = mongo_db.user.update_one({‘name‘:‘yang‘},{‘$set‘:{‘age‘:888}}) res = mongo_db.user.update_many({"age":{"$gte":0}},{"$set":{"age":888}}) print(res,dir(res),res.modified_count) # 删除 res = mongo_db.user.delete_one({"name":"xiaozhuer"}) res = mongo_db.user.delete_many({}) print(res,dir(res),res.deleted_count) res = mongo_db.user.find_one({"name":"yang"}) print(res) for index,item in enumerate(res.get(‘course‘)): if res.get(‘course‘)[index][‘course_name‘] == ‘linux‘: res.get(‘course‘)[index][‘course_name‘] = ‘django框架‘ res = mongo_db.user.update_one({‘name‘:‘yang‘},{‘$set‘:res})

 

flask基础 MongoDB

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