python 操作mongoDB数据库

网上关于python 操作mongoDB的相关文章相对不是很多，并且质量也不是很高！下面给出一个完整的 增删改查示例程序！

#!/usr/bin/python
# -*- coding: utf-8 -*-
import pymongo
import re

connection = pymongo.MongoClient('10.38.164.80',27017)
tdb = connection.test
collection = tdb.article

#插入数据
try:
    insert_data={"id":"2","value":"abc"}
    collection.insert(insert_data)
except BaseException:
    print "插入异常"

#查询数据
try:
    print collection.find_one({"id":"2"})
    cursor =  collection.find({"title":re.compile("^.{0,50}(女神)")},{"title":1,"url":1})
    for result in cursor:
        print type(result)  #查看类型
        print str(result).decode("unicode-escape")
        print result.get("title")
        #print str(result).decode('unicode_escape')
except BaseException,e:
    print "查询数据异常" + str(e)

#修改数据
try:
    collection.update({"id":"2"},{"$set":{"value":"123"}})
except BaseException,e:
    print "更新数据失败"
    print e

#删除数据
try:
    collection.remove({"id":"2"})
except BaseException,e:
    print "删除数据异常"
    print e

工具类（面向对象，使用更方便）

# -*- coding: utf-8 -*-
import pymongo
import re

class MongoUtil:
    def __init__(self,host,port):
        self.host=host
        self.port=port
        self.mongoClient=pymongo.MongoClient(host,port)

    def insert(self,dbName,collectionName,data):
        db=self.mongoClient.get_database(dbName)
        collection=db.get_collection(collectionName)
        collection.insert(data)

    def query(self,dbName,collectionName,queryObj,fieldObj):
        db = self.mongoClient.get_database(dbName)
        collection = db.get_collection(collectionName)
        if fieldObj.__eq__({}):
            return collection.find(queryObj)
        else:
            return collection.find(queryObj,fieldObj)

    def update(self,dbName,collectionName,queryObj,newInfo):
        db = self.mongoClient.get_database(dbName)
        collection = db.get_collection(collectionName)
        collection.update(queryObj,newInfo)

    def delete(self,dbName,collectionName,queryObj):
        db = self.mongoClient.get_database(dbName)
        collection = db.get_collection(collectionName)
        collection.delete_many(queryObj)


mongoClient = MongoUtil("10.38.164.80",27017)
#增加数据
try:
    mongoClient.insert("test","article",{"id":3,"value":"abcde"})
except BaseException,e:
    print e
#查询数据
cursor = mongoClient.query("test","article",{"title":re.compile(".{0,50}(明星)")},{"title":1})
for result in cursor:
    print str(result).decode("unicode-escape")

#修改数据
mongoClient.update("test","article",{"id":3},{"$set":{"value":"12345"}})

#删除数据
mongoClient.delete("test","article",{"id":3})

需要安装mongo库，安装命令如下（ubuntu）：pip install pymongo