python对mongodb的简单操作

图2.mongo服务已经启动

图1.database

学习的测试代码：

#!/urs/bin/env python

#!-*-coding:utf-8 -*-

import  pymongo

#连接数据库

def connect(db_name):

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

fwh_db = fwh_client[db_name]

return fwh_db

#插入文档

def insert_collection(db,col_name):

fwh_col = db[col_name]

#准备插入的字典

    dict1={"title":"傅伟活_test05","description":"简介简介", "by":"python","url":"python.com","tags":[11,12,13,14],"likes":304}

fwh_col.insert_one(dict1)

#查找collction.fine({query},{display})

#注意，display非空，query没有为空，全查找，query的{}不可以去掉

#注意display，除了_id,可以为0,1以外，其他的都需要统一用0不显示，1显示

def fwh_viwe(db,col_name):

test_col=db[col_name]

x = test_col.find_one({"url":{"$gt":"t"}},{"_id":0,"title":1,"url":1})

for xin test_col.find({"url":{"$gt":"m"}},{"_id":0,"title":1,"url":1}):

print(x)

for xin test_col.find({},{"_id":0,"title":1,"url":1,"likes":1}):

print(x)

def fwh_change(db,col_name):

test_col = db[col_name]

test_col.update_one({"by":{"$regex":"(.+2)"}},{"$set":{"likes":"151"}})

def fwh_delect(db,col_name):

test_col = db[col_name]

test_col.delete_one({"url":"163.com"})

if __name__ =="__main__":

db_test=connect("test")#连接数据库

#insert_collection(db_test,"test2")#插入文档

    fwh_viwe(db_test,"test2")#查看文档

#fwh_change(db_test,"test2")#改文档

    #fwh_delect(db_test,"test2")