每日日报2021.12.8

今天完成内容：

学习python MangoDB

1.指定条件查询

#!/usr/bin/python3

import pymongo

myclient = pymongo.MongoClient("mongodb://localhost:27017/")

mydb = myclient["runoobdb"]

mycol = mydb["sites"]

myquery = { "name": "RUNOOB" }

mydoc = mycol.find(myquery)

for x in mydoc:

print(x)

2.高级查询

#!/usr/bin/python3

import pymongo

myclient = pymongo.MongoClient("mongodb://localhost:27017/")

mydb = myclient["runoobdb"]

mycol = mydb["sites"]

myquery = { "name": { "$gt": "H" } }

mydoc = mycol.find(myquery)

for x in mydoc:

print(x)

3.制定条数记录

import pymongo

myclient = pymongo.MongoClient("mongodb://localhost:27017/")

mydb = myclient["runoobdb"]

mycol = mydb["sites"]

myresult = mycol.find().limit(3) # 输出结果

for x in myresult:

print(x)

遇到问题：

无

明日目标：

继续学习python mangoDB