[b]引用PyMongo[/b]
>>> import pymongo
[b]创建连接Connection[/b]
>>> import pymongo
>>> conn = pymongo.Connection('localhost',27017)
或
>>> from pymongo import Connection
>>> conn = Connection('localhost',27017)
[b]创建Connection时，指定host及port参数[/b]
>>> import pymongo
>>> conn = pymongo.Connection(host='127.0.0.1',port=27017)
[b]连接数据库[/b]
>>> db = conn.ChatRoom
或
>>> db = conn['ChatRoom']
[b]连接聚集[/b]
>>> account = db.Account
或
>>> account = db["Account"]
[b]查看全部聚集名称[/b]
>>> db.collection_names()
[b]查看聚集的一条记录[/b]
>>> db.Account.find_one()
>>> db.Account.find_one({"UserName":"keyword"})
[b]查看聚集的字段[/b]
>>> 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'}
[b]查看聚集的多条记录[/b]
>>> for item in db.Account.find():
item
>>> for item in db.Account.find({"UserName":"libing"}):
item["UserName"]
[b]查看聚集的记录统计 [/b]
>>> db.Account.find().count()
>>> db.Account.find({"UserName":"keyword"}).count()
[b]聚集查询结果排序 [/b]
>>> 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
[b]聚集查询结果多列排序[/b]
>>> db.Account.find().sort([("UserName",pymongo.ASCENDING),("Email",pymongo.DESCENDING)])
[b]添加记录[/b]
>>> db.Account.insert({"AccountID":21,"UserName":"libing"})
[b]修改记录[/b]
>>> db.Account.update({"UserName":"libing"},{"$set":{"Email":"libing@126.com","Password":"123"}})
[b]删除记录[/b]
>>> db.Account.remove() -- 全部删除
>>> db.Test.remove({"UserName":"keyword"})
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