PyMongo基本使用

pymongo 1.x

mongoDB在线教程http://www.w3cschool.cc/mongodb/mongodb-tutorial.html

pymongo1.7在线文档http://api.mongodb.org/python/1.7/genindex.html

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引用PyMongo


>>> import pymongo
 


创建连接Connection


>>> import pymongo


>>> conn = pymongo.Connection('localhost',27017)
或


>>> from pymongo import Connection


>>> conn = Connection('localhost',27017)
创建Connection时，指定host及port参数


>>> import pymongo
>>> conn = pymongo.Connection(host='127.0.0.1',port=27017)
 


连接数据库


>>> db = conn.ChatRoom
或


>>> db = conn['ChatRoom']
 


连接聚集


>>> account = db.Account
或 
>>> account = db["Account"]
 


查看全部聚集名称


>>> db.collection_names()
 


查看聚集的一条记录


>>> db.Account.find_one()
 


>>> db.Account.find_one({"UserName":"keyword"})
 


查看聚集的字段 


>>> db.Account.find_one({},{"UserName":1,"Email":1})
{u'UserName': u'libing', u'_id': ObjectId('4ded95c3b7780a774a099b7c'), u'Email': u'libing@35.cn'}
 


>>> db.Account.find_one({},{"UserName":1,"Email":1,"_id":0})
{u'UserName': u'libing', u'Email': u'libing@35.cn'}
 


查看聚集的多条记录


>>> for item in db.Account.find():
        item
 


>>> for item in db.Account.find({"UserName":"libing"}):
        item["UserName"]
 


查看聚集的记录统计 


>>> db.Account.find().count()
 


>>> db.Account.find({"UserName":"keyword"}).count()
 


聚集查询结果排序 


>>> db.Account.find().sort("UserName")  --默认为升序
>>> db.Account.find().sort("UserName",pymongo.ASCENDING)   --升序
>>> db.Account.find().sort("UserName",pymongo.DESCENDING)  --降序
 


聚集查询结果多列排序


>>> db.Account.find().sort([("UserName",pymongo.ASCENDING),("Email",pymongo.DESCENDING)])
 


添加记录


>>> db.Account.insert({"AccountID":21,"UserName":"libing"})
 


修改记录


>>> db.Account.update({"UserName":"libing"},{"$set":{"Email":"libing@126.com","Password":"123"}})
 


删除记录


>>> db.Account.remove()   -- 全部删除
 


>>> db.Test.remove({"UserName":"keyword"})