python操作mongodb数据库

1.连接

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

2.查询

查询全部

for row in myAuthors.find():
    print(row)
displayName Fay Chang 

按条件查询：

pub_papers下的publishedDate中含有relational databases

pub_papers下的description中含有relational databases

import regex
r1 = mycol.find( {
   "pub_papers.publishedDate":{ "$regex": "relational databases"  } 
    })
r2 = mycol.find( {
   "pub_papers.description":{ "$regex": "relational databases"  } 
    })
for row in r1:
    print(row)

for row in r2:
    print(row)