MongoDB与Python之间的交互

进入虚拟环境

sudo pip install pymongo

导入包pymongo

import pymongo

连接，创建客户端

client = pymongo.MongoClient("localhost",27017)

获取数据库test

db = client.test

获取集合student

stu = db.student

添加文档

m1 = {name:'xiaoming',age:18}

m1_id = stu.insert_one(m1).inserted_id

查找一个文档

m2 = stu.find_one()

查找多个文档1

for txt in stu.find():

    print(txt)

查找多个文档2

txt = stu.find()

txt.next()

txt.next()

txt.next()

获取文档个数

print(stu.count())