pymongo中使用大于、小于、大于等于、小于等于的查询方法，pymongo小于,from bson.ob

pymongo中使用大于、小于、大于等于、小于等于的查询方法，pymongo小于,from bson.ob

from bson.objectid import ObjectIdimport pymongo#查询代码#连接本机mongodbconn=pymongo.Connection()#指定数据库db = conn.books#指定collectioncollection = db.book#大于collection.find({'_id':{'$gt':ObjectId('51f6126139ecbb1db4a75667')}})#大于等于collection.find({'_id':{'$gte':ObjectId('51f6126139ecbb1db4a75667')}})#小于collection.find({'_id':{'$lt':ObjectId('51f6126139ecbb1db4a75667')}})#小于等于collection.find({'_id':{'$lte':ObjectId('51f6126139ecbb1db4a75667')}})