#-*- coding: UTF-8 -*-
import pymongo
mongo_client = pymongo.MongoClient('主机', 27017)
mongo_auth = mongo_client.数据库名 #或 mongo_client['admin'] admin为authenticationDatabase
mongo_auth.authenticate('用户名', '密码')
collection = mongo_auth.集合名
count = 0
#打印集合中所有数据
for item in collection.find():
    # print(item)
    count += 1
print(count)
#查找集合中单条数据
print(collection.find_one())
#关闭连接
mongo_client.close()